LLVM 19.0.0git
ARMExpandPseudoInsts.cpp
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1//===-- ARMExpandPseudoInsts.cpp - Expand pseudo instructions -------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains a pass that expands pseudo instructions into target
10// instructions to allow proper scheduling, if-conversion, and other late
11// optimizations. This pass should be run after register allocation but before
12// the post-regalloc scheduling pass.
13//
14//===----------------------------------------------------------------------===//
15
16#include "ARM.h"
17#include "ARMBaseInstrInfo.h"
18#include "ARMBaseRegisterInfo.h"
19#include "ARMConstantPoolValue.h"
20#include "ARMMachineFunctionInfo.h"
21#include "ARMSubtarget.h"
22#include "MCTargetDesc/ARMAddressingModes.h"
23#include "llvm/CodeGen/LivePhysRegs.h"
24#include "llvm/CodeGen/MachineFrameInfo.h"
25#include "llvm/CodeGen/MachineFunctionPass.h"
26#include "llvm/CodeGen/MachineJumpTableInfo.h"
27#include "llvm/MC/MCAsmInfo.h"
28#include "llvm/Support/Debug.h"
29
30using namespace llvm;
31
32#define DEBUG_TYPE "arm-pseudo"
33
34static cl::opt<bool>
35VerifyARMPseudo("verify-arm-pseudo-expand", cl::Hidden,
36 cl::desc("Verify machine code after expanding ARM pseudos"));
37
38#define ARM_EXPAND_PSEUDO_NAME "ARM pseudo instruction expansion pass"
39
40namespace {
41 class ARMExpandPseudo : public MachineFunctionPass {
42 public:
43 static char ID;
44 ARMExpandPseudo() : MachineFunctionPass(ID) {}
45
46 const ARMBaseInstrInfo *TII;
47 const TargetRegisterInfo *TRI;
48 const ARMSubtarget *STI;
49 ARMFunctionInfo *AFI;
50
51 bool runOnMachineFunction(MachineFunction &Fn) override;
52
53 MachineFunctionProperties getRequiredProperties() const override {
54 return MachineFunctionProperties().set(
55 MachineFunctionProperties::Property::NoVRegs);
56 }
57
58 StringRef getPassName() const override {
59 return ARM_EXPAND_PSEUDO_NAME;
60 }
61
62 private:
63 bool ExpandMI(MachineBasicBlock &MBB,
64 MachineBasicBlock::iterator MBBI,
65 MachineBasicBlock::iterator &NextMBBI);
66 bool ExpandMBB(MachineBasicBlock &MBB);
67 void ExpandVLD(MachineBasicBlock::iterator &MBBI);
68 void ExpandVST(MachineBasicBlock::iterator &MBBI);
69 void ExpandLaneOp(MachineBasicBlock::iterator &MBBI);
70 void ExpandVTBL(MachineBasicBlock::iterator &MBBI,
71 unsigned Opc, bool IsExt);
72 void ExpandMQQPRLoadStore(MachineBasicBlock::iterator &MBBI);
73 void ExpandTMOV32BitImm(MachineBasicBlock &MBB,
74 MachineBasicBlock::iterator &MBBI);
75 void ExpandMOV32BitImm(MachineBasicBlock &MBB,
76 MachineBasicBlock::iterator &MBBI);
77 void CMSEClearGPRegs(MachineBasicBlock &MBB,
78 MachineBasicBlock::iterator MBBI, const DebugLoc &DL,
79 const SmallVectorImpl<unsigned> &ClearRegs,
80 unsigned ClobberReg);
81 MachineBasicBlock &CMSEClearFPRegs(MachineBasicBlock &MBB,
82 MachineBasicBlock::iterator MBBI);
83 MachineBasicBlock &CMSEClearFPRegsV8(MachineBasicBlock &MBB,
84 MachineBasicBlock::iterator MBBI,
85 const BitVector &ClearRegs);
86 MachineBasicBlock &CMSEClearFPRegsV81(MachineBasicBlock &MBB,
87 MachineBasicBlock::iterator MBBI,
88 const BitVector &ClearRegs);
89 void CMSESaveClearFPRegs(MachineBasicBlock &MBB,
90 MachineBasicBlock::iterator MBBI, DebugLoc &DL,
91 const LivePhysRegs &LiveRegs,
92 SmallVectorImpl<unsigned> &AvailableRegs);
93 void CMSESaveClearFPRegsV8(MachineBasicBlock &MBB,
94 MachineBasicBlock::iterator MBBI, DebugLoc &DL,
95 const LivePhysRegs &LiveRegs,
96 SmallVectorImpl<unsigned> &ScratchRegs);
97 void CMSESaveClearFPRegsV81(MachineBasicBlock &MBB,
98 MachineBasicBlock::iterator MBBI, DebugLoc &DL,
99 const LivePhysRegs &LiveRegs);
100 void CMSERestoreFPRegs(MachineBasicBlock &MBB,
101 MachineBasicBlock::iterator MBBI, DebugLoc &DL,
102 SmallVectorImpl<unsigned> &AvailableRegs);
103 void CMSERestoreFPRegsV8(MachineBasicBlock &MBB,
104 MachineBasicBlock::iterator MBBI, DebugLoc &DL,
105 SmallVectorImpl<unsigned> &AvailableRegs);
106 void CMSERestoreFPRegsV81(MachineBasicBlock &MBB,
107 MachineBasicBlock::iterator MBBI, DebugLoc &DL,
108 SmallVectorImpl<unsigned> &AvailableRegs);
109 bool ExpandCMP_SWAP(MachineBasicBlock &MBB,
110 MachineBasicBlock::iterator MBBI, unsigned LdrexOp,
111 unsigned StrexOp, unsigned UxtOp,
112 MachineBasicBlock::iterator &NextMBBI);
113
114 bool ExpandCMP_SWAP_64(MachineBasicBlock &MBB,
115 MachineBasicBlock::iterator MBBI,
116 MachineBasicBlock::iterator &NextMBBI);
117 };
118 char ARMExpandPseudo::ID = 0;
119}
120
121INITIALIZE_PASS(ARMExpandPseudo, DEBUG_TYPE, ARM_EXPAND_PSEUDO_NAME, false,
122 false)
123
124namespace {
125 // Constants for register spacing in NEON load/store instructions.
126 // For quad-register load-lane and store-lane pseudo instructors, the
127 // spacing is initially assumed to be EvenDblSpc, and that is changed to
128 // OddDblSpc depending on the lane number operand.
129 enum NEONRegSpacing {
130 SingleSpc,
131 SingleLowSpc , // Single spacing, low registers, three and four vectors.
132 SingleHighQSpc, // Single spacing, high registers, four vectors.
133 SingleHighTSpc, // Single spacing, high registers, three vectors.
134 EvenDblSpc,
135 OddDblSpc
136 };
137
138 // Entries for NEON load/store information table. The table is sorted by
139 // PseudoOpc for fast binary-search lookups.
140 struct NEONLdStTableEntry {
141 uint16_t PseudoOpc;
142 uint16_t RealOpc;
143 bool IsLoad;
144 bool isUpdating;
145 bool hasWritebackOperand;
146 uint8_t RegSpacing; // One of type NEONRegSpacing
147 uint8_t NumRegs; // D registers loaded or stored
148 uint8_t RegElts; // elements per D register; used for lane ops
149 // FIXME: Temporary flag to denote whether the real instruction takes
150 // a single register (like the encoding) or all of the registers in
151 // the list (like the asm syntax and the isel DAG). When all definitions
152 // are converted to take only the single encoded register, this will
153 // go away.
154 bool copyAllListRegs;
155
156 // Comparison methods for binary search of the table.
157 bool operator<(const NEONLdStTableEntry &TE) const {
158 return PseudoOpc < TE.PseudoOpc;
159 }
160 friend bool operator<(const NEONLdStTableEntry &TE, unsigned PseudoOpc) {
161 return TE.PseudoOpc < PseudoOpc;
162 }
163 friend bool LLVM_ATTRIBUTE_UNUSED operator<(unsigned PseudoOpc,
164 const NEONLdStTableEntry &TE) {
165 return PseudoOpc < TE.PseudoOpc;
166 }
167 };
168}
169
170static const NEONLdStTableEntry NEONLdStTable[] = {
171{ ARM::VLD1LNq16Pseudo, ARM::VLD1LNd16, true, false, false, EvenDblSpc, 1, 4 ,true},
172{ ARM::VLD1LNq16Pseudo_UPD, ARM::VLD1LNd16_UPD, true, true, true, EvenDblSpc, 1, 4 ,true},
173{ ARM::VLD1LNq32Pseudo, ARM::VLD1LNd32, true, false, false, EvenDblSpc, 1, 2 ,true},
174{ ARM::VLD1LNq32Pseudo_UPD, ARM::VLD1LNd32_UPD, true, true, true, EvenDblSpc, 1, 2 ,true},
175{ ARM::VLD1LNq8Pseudo, ARM::VLD1LNd8, true, false, false, EvenDblSpc, 1, 8 ,true},
176{ ARM::VLD1LNq8Pseudo_UPD, ARM::VLD1LNd8_UPD, true, true, true, EvenDblSpc, 1, 8 ,true},
177
178{ ARM::VLD1d16QPseudo, ARM::VLD1d16Q, true, false, false, SingleSpc, 4, 4 ,false},
179{ ARM::VLD1d16QPseudoWB_fixed, ARM::VLD1d16Qwb_fixed, true, true, false, SingleSpc, 4, 4 ,false},
180{ ARM::VLD1d16QPseudoWB_register, ARM::VLD1d16Qwb_register, true, true, true, SingleSpc, 4, 4 ,false},
181{ ARM::VLD1d16TPseudo, ARM::VLD1d16T, true, false, false, SingleSpc, 3, 4 ,false},
182{ ARM::VLD1d16TPseudoWB_fixed, ARM::VLD1d16Twb_fixed, true, true, false, SingleSpc, 3, 4 ,false},
183{ ARM::VLD1d16TPseudoWB_register, ARM::VLD1d16Twb_register, true, true, true, SingleSpc, 3, 4 ,false},
184
185{ ARM::VLD1d32QPseudo, ARM::VLD1d32Q, true, false, false, SingleSpc, 4, 2 ,false},
186{ ARM::VLD1d32QPseudoWB_fixed, ARM::VLD1d32Qwb_fixed, true, true, false, SingleSpc, 4, 2 ,false},
187{ ARM::VLD1d32QPseudoWB_register, ARM::VLD1d32Qwb_register, true, true, true, SingleSpc, 4, 2 ,false},
188{ ARM::VLD1d32TPseudo, ARM::VLD1d32T, true, false, false, SingleSpc, 3, 2 ,false},
189{ ARM::VLD1d32TPseudoWB_fixed, ARM::VLD1d32Twb_fixed, true, true, false, SingleSpc, 3, 2 ,false},
190{ ARM::VLD1d32TPseudoWB_register, ARM::VLD1d32Twb_register, true, true, true, SingleSpc, 3, 2 ,false},
191
192{ ARM::VLD1d64QPseudo, ARM::VLD1d64Q, true, false, false, SingleSpc, 4, 1 ,false},
193{ ARM::VLD1d64QPseudoWB_fixed, ARM::VLD1d64Qwb_fixed, true, true, false, SingleSpc, 4, 1 ,false},
194{ ARM::VLD1d64QPseudoWB_register, ARM::VLD1d64Qwb_register, true, true, true, SingleSpc, 4, 1 ,false},
195{ ARM::VLD1d64TPseudo, ARM::VLD1d64T, true, false, false, SingleSpc, 3, 1 ,false},
196{ ARM::VLD1d64TPseudoWB_fixed, ARM::VLD1d64Twb_fixed, true, true, false, SingleSpc, 3, 1 ,false},
197{ ARM::VLD1d64TPseudoWB_register, ARM::VLD1d64Twb_register, true, true, true, SingleSpc, 3, 1 ,false},
198
199{ ARM::VLD1d8QPseudo, ARM::VLD1d8Q, true, false, false, SingleSpc, 4, 8 ,false},
200{ ARM::VLD1d8QPseudoWB_fixed, ARM::VLD1d8Qwb_fixed, true, true, false, SingleSpc, 4, 8 ,false},
201{ ARM::VLD1d8QPseudoWB_register, ARM::VLD1d8Qwb_register, true, true, true, SingleSpc, 4, 8 ,false},
202{ ARM::VLD1d8TPseudo, ARM::VLD1d8T, true, false, false, SingleSpc, 3, 8 ,false},
203{ ARM::VLD1d8TPseudoWB_fixed, ARM::VLD1d8Twb_fixed, true, true, false, SingleSpc, 3, 8 ,false},
204{ ARM::VLD1d8TPseudoWB_register, ARM::VLD1d8Twb_register, true, true, true, SingleSpc, 3, 8 ,false},
205
206{ ARM::VLD1q16HighQPseudo, ARM::VLD1d16Q, true, false, false, SingleHighQSpc, 4, 4 ,false},
207{ ARM::VLD1q16HighQPseudo_UPD, ARM::VLD1d16Qwb_fixed, true, true, true, SingleHighQSpc, 4, 4 ,false},
208{ ARM::VLD1q16HighTPseudo, ARM::VLD1d16T, true, false, false, SingleHighTSpc, 3, 4 ,false},
209{ ARM::VLD1q16HighTPseudo_UPD, ARM::VLD1d16Twb_fixed, true, true, true, SingleHighTSpc, 3, 4 ,false},
210{ ARM::VLD1q16LowQPseudo_UPD, ARM::VLD1d16Qwb_fixed, true, true, true, SingleLowSpc, 4, 4 ,false},
211{ ARM::VLD1q16LowTPseudo_UPD, ARM::VLD1d16Twb_fixed, true, true, true, SingleLowSpc, 3, 4 ,false},
212
213{ ARM::VLD1q32HighQPseudo, ARM::VLD1d32Q, true, false, false, SingleHighQSpc, 4, 2 ,false},
214{ ARM::VLD1q32HighQPseudo_UPD, ARM::VLD1d32Qwb_fixed, true, true, true, SingleHighQSpc, 4, 2 ,false},
215{ ARM::VLD1q32HighTPseudo, ARM::VLD1d32T, true, false, false, SingleHighTSpc, 3, 2 ,false},
216{ ARM::VLD1q32HighTPseudo_UPD, ARM::VLD1d32Twb_fixed, true, true, true, SingleHighTSpc, 3, 2 ,false},
217{ ARM::VLD1q32LowQPseudo_UPD, ARM::VLD1d32Qwb_fixed, true, true, true, SingleLowSpc, 4, 2 ,false},
218{ ARM::VLD1q32LowTPseudo_UPD, ARM::VLD1d32Twb_fixed, true, true, true, SingleLowSpc, 3, 2 ,false},
219
220{ ARM::VLD1q64HighQPseudo, ARM::VLD1d64Q, true, false, false, SingleHighQSpc, 4, 1 ,false},
221{ ARM::VLD1q64HighQPseudo_UPD, ARM::VLD1d64Qwb_fixed, true, true, true, SingleHighQSpc, 4, 1 ,false},
222{ ARM::VLD1q64HighTPseudo, ARM::VLD1d64T, true, false, false, SingleHighTSpc, 3, 1 ,false},
223{ ARM::VLD1q64HighTPseudo_UPD, ARM::VLD1d64Twb_fixed, true, true, true, SingleHighTSpc, 3, 1 ,false},
224{ ARM::VLD1q64LowQPseudo_UPD, ARM::VLD1d64Qwb_fixed, true, true, true, SingleLowSpc, 4, 1 ,false},
225{ ARM::VLD1q64LowTPseudo_UPD, ARM::VLD1d64Twb_fixed, true, true, true, SingleLowSpc, 3, 1 ,false},
226
227{ ARM::VLD1q8HighQPseudo, ARM::VLD1d8Q, true, false, false, SingleHighQSpc, 4, 8 ,false},
228{ ARM::VLD1q8HighQPseudo_UPD, ARM::VLD1d8Qwb_fixed, true, true, true, SingleHighQSpc, 4, 8 ,false},
229{ ARM::VLD1q8HighTPseudo, ARM::VLD1d8T, true, false, false, SingleHighTSpc, 3, 8 ,false},
230{ ARM::VLD1q8HighTPseudo_UPD, ARM::VLD1d8Twb_fixed, true, true, true, SingleHighTSpc, 3, 8 ,false},
231{ ARM::VLD1q8LowQPseudo_UPD, ARM::VLD1d8Qwb_fixed, true, true, true, SingleLowSpc, 4, 8 ,false},
232{ ARM::VLD1q8LowTPseudo_UPD, ARM::VLD1d8Twb_fixed, true, true, true, SingleLowSpc, 3, 8 ,false},
233
234{ ARM::VLD2DUPq16EvenPseudo, ARM::VLD2DUPd16x2, true, false, false, EvenDblSpc, 2, 4 ,false},
235{ ARM::VLD2DUPq16OddPseudo, ARM::VLD2DUPd16x2, true, false, false, OddDblSpc, 2, 4 ,false},
236{ ARM::VLD2DUPq16OddPseudoWB_fixed, ARM::VLD2DUPd16x2wb_fixed, true, true, false, OddDblSpc, 2, 4 ,false},
237{ ARM::VLD2DUPq16OddPseudoWB_register, ARM::VLD2DUPd16x2wb_register, true, true, true, OddDblSpc, 2, 4 ,false},
238{ ARM::VLD2DUPq32EvenPseudo, ARM::VLD2DUPd32x2, true, false, false, EvenDblSpc, 2, 2 ,false},
239{ ARM::VLD2DUPq32OddPseudo, ARM::VLD2DUPd32x2, true, false, false, OddDblSpc, 2, 2 ,false},
240{ ARM::VLD2DUPq32OddPseudoWB_fixed, ARM::VLD2DUPd32x2wb_fixed, true, true, false, OddDblSpc, 2, 2 ,false},
241{ ARM::VLD2DUPq32OddPseudoWB_register, ARM::VLD2DUPd32x2wb_register, true, true, true, OddDblSpc, 2, 2 ,false},
242{ ARM::VLD2DUPq8EvenPseudo, ARM::VLD2DUPd8x2, true, false, false, EvenDblSpc, 2, 8 ,false},
243{ ARM::VLD2DUPq8OddPseudo, ARM::VLD2DUPd8x2, true, false, false, OddDblSpc, 2, 8 ,false},
244{ ARM::VLD2DUPq8OddPseudoWB_fixed, ARM::VLD2DUPd8x2wb_fixed, true, true, false, OddDblSpc, 2, 8 ,false},
245{ ARM::VLD2DUPq8OddPseudoWB_register, ARM::VLD2DUPd8x2wb_register, true, true, true, OddDblSpc, 2, 8 ,false},
246
247{ ARM::VLD2LNd16Pseudo, ARM::VLD2LNd16, true, false, false, SingleSpc, 2, 4 ,true},
248{ ARM::VLD2LNd16Pseudo_UPD, ARM::VLD2LNd16_UPD, true, true, true, SingleSpc, 2, 4 ,true},
249{ ARM::VLD2LNd32Pseudo, ARM::VLD2LNd32, true, false, false, SingleSpc, 2, 2 ,true},
250{ ARM::VLD2LNd32Pseudo_UPD, ARM::VLD2LNd32_UPD, true, true, true, SingleSpc, 2, 2 ,true},
251{ ARM::VLD2LNd8Pseudo, ARM::VLD2LNd8, true, false, false, SingleSpc, 2, 8 ,true},
252{ ARM::VLD2LNd8Pseudo_UPD, ARM::VLD2LNd8_UPD, true, true, true, SingleSpc, 2, 8 ,true},
253{ ARM::VLD2LNq16Pseudo, ARM::VLD2LNq16, true, false, false, EvenDblSpc, 2, 4 ,true},
254{ ARM::VLD2LNq16Pseudo_UPD, ARM::VLD2LNq16_UPD, true, true, true, EvenDblSpc, 2, 4 ,true},
255{ ARM::VLD2LNq32Pseudo, ARM::VLD2LNq32, true, false, false, EvenDblSpc, 2, 2 ,true},
256{ ARM::VLD2LNq32Pseudo_UPD, ARM::VLD2LNq32_UPD, true, true, true, EvenDblSpc, 2, 2 ,true},
257
258{ ARM::VLD2q16Pseudo, ARM::VLD2q16, true, false, false, SingleSpc, 4, 4 ,false},
259{ ARM::VLD2q16PseudoWB_fixed, ARM::VLD2q16wb_fixed, true, true, false, SingleSpc, 4, 4 ,false},
260{ ARM::VLD2q16PseudoWB_register, ARM::VLD2q16wb_register, true, true, true, SingleSpc, 4, 4 ,false},
261{ ARM::VLD2q32Pseudo, ARM::VLD2q32, true, false, false, SingleSpc, 4, 2 ,false},
262{ ARM::VLD2q32PseudoWB_fixed, ARM::VLD2q32wb_fixed, true, true, false, SingleSpc, 4, 2 ,false},
263{ ARM::VLD2q32PseudoWB_register, ARM::VLD2q32wb_register, true, true, true, SingleSpc, 4, 2 ,false},
264{ ARM::VLD2q8Pseudo, ARM::VLD2q8, true, false, false, SingleSpc, 4, 8 ,false},
265{ ARM::VLD2q8PseudoWB_fixed, ARM::VLD2q8wb_fixed, true, true, false, SingleSpc, 4, 8 ,false},
266{ ARM::VLD2q8PseudoWB_register, ARM::VLD2q8wb_register, true, true, true, SingleSpc, 4, 8 ,false},
267
268{ ARM::VLD3DUPd16Pseudo, ARM::VLD3DUPd16, true, false, false, SingleSpc, 3, 4,true},
269{ ARM::VLD3DUPd16Pseudo_UPD, ARM::VLD3DUPd16_UPD, true, true, true, SingleSpc, 3, 4,true},
270{ ARM::VLD3DUPd32Pseudo, ARM::VLD3DUPd32, true, false, false, SingleSpc, 3, 2,true},
271{ ARM::VLD3DUPd32Pseudo_UPD, ARM::VLD3DUPd32_UPD, true, true, true, SingleSpc, 3, 2,true},
272{ ARM::VLD3DUPd8Pseudo, ARM::VLD3DUPd8, true, false, false, SingleSpc, 3, 8,true},
273{ ARM::VLD3DUPd8Pseudo_UPD, ARM::VLD3DUPd8_UPD, true, true, true, SingleSpc, 3, 8,true},
274{ ARM::VLD3DUPq16EvenPseudo, ARM::VLD3DUPq16, true, false, false, EvenDblSpc, 3, 4 ,true},
275{ ARM::VLD3DUPq16OddPseudo, ARM::VLD3DUPq16, true, false, false, OddDblSpc, 3, 4 ,true},
276{ ARM::VLD3DUPq16OddPseudo_UPD, ARM::VLD3DUPq16_UPD, true, true, true, OddDblSpc, 3, 4 ,true},
277{ ARM::VLD3DUPq32EvenPseudo, ARM::VLD3DUPq32, true, false, false, EvenDblSpc, 3, 2 ,true},
278{ ARM::VLD3DUPq32OddPseudo, ARM::VLD3DUPq32, true, false, false, OddDblSpc, 3, 2 ,true},
279{ ARM::VLD3DUPq32OddPseudo_UPD, ARM::VLD3DUPq32_UPD, true, true, true, OddDblSpc, 3, 2 ,true},
280{ ARM::VLD3DUPq8EvenPseudo, ARM::VLD3DUPq8, true, false, false, EvenDblSpc, 3, 8 ,true},
281{ ARM::VLD3DUPq8OddPseudo, ARM::VLD3DUPq8, true, false, false, OddDblSpc, 3, 8 ,true},
282{ ARM::VLD3DUPq8OddPseudo_UPD, ARM::VLD3DUPq8_UPD, true, true, true, OddDblSpc, 3, 8 ,true},
283
284{ ARM::VLD3LNd16Pseudo, ARM::VLD3LNd16, true, false, false, SingleSpc, 3, 4 ,true},
285{ ARM::VLD3LNd16Pseudo_UPD, ARM::VLD3LNd16_UPD, true, true, true, SingleSpc, 3, 4 ,true},
286{ ARM::VLD3LNd32Pseudo, ARM::VLD3LNd32, true, false, false, SingleSpc, 3, 2 ,true},
287{ ARM::VLD3LNd32Pseudo_UPD, ARM::VLD3LNd32_UPD, true, true, true, SingleSpc, 3, 2 ,true},
288{ ARM::VLD3LNd8Pseudo, ARM::VLD3LNd8, true, false, false, SingleSpc, 3, 8 ,true},
289{ ARM::VLD3LNd8Pseudo_UPD, ARM::VLD3LNd8_UPD, true, true, true, SingleSpc, 3, 8 ,true},
290{ ARM::VLD3LNq16Pseudo, ARM::VLD3LNq16, true, false, false, EvenDblSpc, 3, 4 ,true},
291{ ARM::VLD3LNq16Pseudo_UPD, ARM::VLD3LNq16_UPD, true, true, true, EvenDblSpc, 3, 4 ,true},
292{ ARM::VLD3LNq32Pseudo, ARM::VLD3LNq32, true, false, false, EvenDblSpc, 3, 2 ,true},
293{ ARM::VLD3LNq32Pseudo_UPD, ARM::VLD3LNq32_UPD, true, true, true, EvenDblSpc, 3, 2 ,true},
294
295{ ARM::VLD3d16Pseudo, ARM::VLD3d16, true, false, false, SingleSpc, 3, 4 ,true},
296{ ARM::VLD3d16Pseudo_UPD, ARM::VLD3d16_UPD, true, true, true, SingleSpc, 3, 4 ,true},
297{ ARM::VLD3d32Pseudo, ARM::VLD3d32, true, false, false, SingleSpc, 3, 2 ,true},
298{ ARM::VLD3d32Pseudo_UPD, ARM::VLD3d32_UPD, true, true, true, SingleSpc, 3, 2 ,true},
299{ ARM::VLD3d8Pseudo, ARM::VLD3d8, true, false, false, SingleSpc, 3, 8 ,true},
300{ ARM::VLD3d8Pseudo_UPD, ARM::VLD3d8_UPD, true, true, true, SingleSpc, 3, 8 ,true},
301
302{ ARM::VLD3q16Pseudo_UPD, ARM::VLD3q16_UPD, true, true, true, EvenDblSpc, 3, 4 ,true},
303{ ARM::VLD3q16oddPseudo, ARM::VLD3q16, true, false, false, OddDblSpc, 3, 4 ,true},
304{ ARM::VLD3q16oddPseudo_UPD, ARM::VLD3q16_UPD, true, true, true, OddDblSpc, 3, 4 ,true},
305{ ARM::VLD3q32Pseudo_UPD, ARM::VLD3q32_UPD, true, true, true, EvenDblSpc, 3, 2 ,true},
306{ ARM::VLD3q32oddPseudo, ARM::VLD3q32, true, false, false, OddDblSpc, 3, 2 ,true},
307{ ARM::VLD3q32oddPseudo_UPD, ARM::VLD3q32_UPD, true, true, true, OddDblSpc, 3, 2 ,true},
308{ ARM::VLD3q8Pseudo_UPD, ARM::VLD3q8_UPD, true, true, true, EvenDblSpc, 3, 8 ,true},
309{ ARM::VLD3q8oddPseudo, ARM::VLD3q8, true, false, false, OddDblSpc, 3, 8 ,true},
310{ ARM::VLD3q8oddPseudo_UPD, ARM::VLD3q8_UPD, true, true, true, OddDblSpc, 3, 8 ,true},
311
312{ ARM::VLD4DUPd16Pseudo, ARM::VLD4DUPd16, true, false, false, SingleSpc, 4, 4,true},
313{ ARM::VLD4DUPd16Pseudo_UPD, ARM::VLD4DUPd16_UPD, true, true, true, SingleSpc, 4, 4,true},
314{ ARM::VLD4DUPd32Pseudo, ARM::VLD4DUPd32, true, false, false, SingleSpc, 4, 2,true},
315{ ARM::VLD4DUPd32Pseudo_UPD, ARM::VLD4DUPd32_UPD, true, true, true, SingleSpc, 4, 2,true},
316{ ARM::VLD4DUPd8Pseudo, ARM::VLD4DUPd8, true, false, false, SingleSpc, 4, 8,true},
317{ ARM::VLD4DUPd8Pseudo_UPD, ARM::VLD4DUPd8_UPD, true, true, true, SingleSpc, 4, 8,true},
318{ ARM::VLD4DUPq16EvenPseudo, ARM::VLD4DUPq16, true, false, false, EvenDblSpc, 4, 4 ,true},
319{ ARM::VLD4DUPq16OddPseudo, ARM::VLD4DUPq16, true, false, false, OddDblSpc, 4, 4 ,true},
320{ ARM::VLD4DUPq16OddPseudo_UPD, ARM::VLD4DUPq16_UPD, true, true, true, OddDblSpc, 4, 4 ,true},
321{ ARM::VLD4DUPq32EvenPseudo, ARM::VLD4DUPq32, true, false, false, EvenDblSpc, 4, 2 ,true},
322{ ARM::VLD4DUPq32OddPseudo, ARM::VLD4DUPq32, true, false, false, OddDblSpc, 4, 2 ,true},
323{ ARM::VLD4DUPq32OddPseudo_UPD, ARM::VLD4DUPq32_UPD, true, true, true, OddDblSpc, 4, 2 ,true},
324{ ARM::VLD4DUPq8EvenPseudo, ARM::VLD4DUPq8, true, false, false, EvenDblSpc, 4, 8 ,true},
325{ ARM::VLD4DUPq8OddPseudo, ARM::VLD4DUPq8, true, false, false, OddDblSpc, 4, 8 ,true},
326{ ARM::VLD4DUPq8OddPseudo_UPD, ARM::VLD4DUPq8_UPD, true, true, true, OddDblSpc, 4, 8 ,true},
327
328{ ARM::VLD4LNd16Pseudo, ARM::VLD4LNd16, true, false, false, SingleSpc, 4, 4 ,true},
329{ ARM::VLD4LNd16Pseudo_UPD, ARM::VLD4LNd16_UPD, true, true, true, SingleSpc, 4, 4 ,true},
330{ ARM::VLD4LNd32Pseudo, ARM::VLD4LNd32, true, false, false, SingleSpc, 4, 2 ,true},
331{ ARM::VLD4LNd32Pseudo_UPD, ARM::VLD4LNd32_UPD, true, true, true, SingleSpc, 4, 2 ,true},
332{ ARM::VLD4LNd8Pseudo, ARM::VLD4LNd8, true, false, false, SingleSpc, 4, 8 ,true},
333{ ARM::VLD4LNd8Pseudo_UPD, ARM::VLD4LNd8_UPD, true, true, true, SingleSpc, 4, 8 ,true},
334{ ARM::VLD4LNq16Pseudo, ARM::VLD4LNq16, true, false, false, EvenDblSpc, 4, 4 ,true},
335{ ARM::VLD4LNq16Pseudo_UPD, ARM::VLD4LNq16_UPD, true, true, true, EvenDblSpc, 4, 4 ,true},
336{ ARM::VLD4LNq32Pseudo, ARM::VLD4LNq32, true, false, false, EvenDblSpc, 4, 2 ,true},
337{ ARM::VLD4LNq32Pseudo_UPD, ARM::VLD4LNq32_UPD, true, true, true, EvenDblSpc, 4, 2 ,true},
338
339{ ARM::VLD4d16Pseudo, ARM::VLD4d16, true, false, false, SingleSpc, 4, 4 ,true},
340{ ARM::VLD4d16Pseudo_UPD, ARM::VLD4d16_UPD, true, true, true, SingleSpc, 4, 4 ,true},
341{ ARM::VLD4d32Pseudo, ARM::VLD4d32, true, false, false, SingleSpc, 4, 2 ,true},
342{ ARM::VLD4d32Pseudo_UPD, ARM::VLD4d32_UPD, true, true, true, SingleSpc, 4, 2 ,true},
343{ ARM::VLD4d8Pseudo, ARM::VLD4d8, true, false, false, SingleSpc, 4, 8 ,true},
344{ ARM::VLD4d8Pseudo_UPD, ARM::VLD4d8_UPD, true, true, true, SingleSpc, 4, 8 ,true},
345
346{ ARM::VLD4q16Pseudo_UPD, ARM::VLD4q16_UPD, true, true, true, EvenDblSpc, 4, 4 ,true},
347{ ARM::VLD4q16oddPseudo, ARM::VLD4q16, true, false, false, OddDblSpc, 4, 4 ,true},
348{ ARM::VLD4q16oddPseudo_UPD, ARM::VLD4q16_UPD, true, true, true, OddDblSpc, 4, 4 ,true},
349{ ARM::VLD4q32Pseudo_UPD, ARM::VLD4q32_UPD, true, true, true, EvenDblSpc, 4, 2 ,true},
350{ ARM::VLD4q32oddPseudo, ARM::VLD4q32, true, false, false, OddDblSpc, 4, 2 ,true},
351{ ARM::VLD4q32oddPseudo_UPD, ARM::VLD4q32_UPD, true, true, true, OddDblSpc, 4, 2 ,true},
352{ ARM::VLD4q8Pseudo_UPD, ARM::VLD4q8_UPD, true, true, true, EvenDblSpc, 4, 8 ,true},
353{ ARM::VLD4q8oddPseudo, ARM::VLD4q8, true, false, false, OddDblSpc, 4, 8 ,true},
354{ ARM::VLD4q8oddPseudo_UPD, ARM::VLD4q8_UPD, true, true, true, OddDblSpc, 4, 8 ,true},
355
356{ ARM::VST1LNq16Pseudo, ARM::VST1LNd16, false, false, false, EvenDblSpc, 1, 4 ,true},
357{ ARM::VST1LNq16Pseudo_UPD, ARM::VST1LNd16_UPD, false, true, true, EvenDblSpc, 1, 4 ,true},
358{ ARM::VST1LNq32Pseudo, ARM::VST1LNd32, false, false, false, EvenDblSpc, 1, 2 ,true},
359{ ARM::VST1LNq32Pseudo_UPD, ARM::VST1LNd32_UPD, false, true, true, EvenDblSpc, 1, 2 ,true},
360{ ARM::VST1LNq8Pseudo, ARM::VST1LNd8, false, false, false, EvenDblSpc, 1, 8 ,true},
361{ ARM::VST1LNq8Pseudo_UPD, ARM::VST1LNd8_UPD, false, true, true, EvenDblSpc, 1, 8 ,true},
362
363{ ARM::VST1d16QPseudo, ARM::VST1d16Q, false, false, false, SingleSpc, 4, 4 ,false},
364{ ARM::VST1d16QPseudoWB_fixed, ARM::VST1d16Qwb_fixed, false, true, false, SingleSpc, 4, 4 ,false},
365{ ARM::VST1d16QPseudoWB_register, ARM::VST1d16Qwb_register, false, true, true, SingleSpc, 4, 4 ,false},
366{ ARM::VST1d16TPseudo, ARM::VST1d16T, false, false, false, SingleSpc, 3, 4 ,false},
367{ ARM::VST1d16TPseudoWB_fixed, ARM::VST1d16Twb_fixed, false, true, false, SingleSpc, 3, 4 ,false},
368{ ARM::VST1d16TPseudoWB_register, ARM::VST1d16Twb_register, false, true, true, SingleSpc, 3, 4 ,false},
369
370{ ARM::VST1d32QPseudo, ARM::VST1d32Q, false, false, false, SingleSpc, 4, 2 ,false},
371{ ARM::VST1d32QPseudoWB_fixed, ARM::VST1d32Qwb_fixed, false, true, false, SingleSpc, 4, 2 ,false},
372{ ARM::VST1d32QPseudoWB_register, ARM::VST1d32Qwb_register, false, true, true, SingleSpc, 4, 2 ,false},
373{ ARM::VST1d32TPseudo, ARM::VST1d32T, false, false, false, SingleSpc, 3, 2 ,false},
374{ ARM::VST1d32TPseudoWB_fixed, ARM::VST1d32Twb_fixed, false, true, false, SingleSpc, 3, 2 ,false},
375{ ARM::VST1d32TPseudoWB_register, ARM::VST1d32Twb_register, false, true, true, SingleSpc, 3, 2 ,false},
376
377{ ARM::VST1d64QPseudo, ARM::VST1d64Q, false, false, false, SingleSpc, 4, 1 ,false},
378{ ARM::VST1d64QPseudoWB_fixed, ARM::VST1d64Qwb_fixed, false, true, false, SingleSpc, 4, 1 ,false},
379{ ARM::VST1d64QPseudoWB_register, ARM::VST1d64Qwb_register, false, true, true, SingleSpc, 4, 1 ,false},
380{ ARM::VST1d64TPseudo, ARM::VST1d64T, false, false, false, SingleSpc, 3, 1 ,false},
381{ ARM::VST1d64TPseudoWB_fixed, ARM::VST1d64Twb_fixed, false, true, false, SingleSpc, 3, 1 ,false},
382{ ARM::VST1d64TPseudoWB_register, ARM::VST1d64Twb_register, false, true, true, SingleSpc, 3, 1 ,false},
383
384{ ARM::VST1d8QPseudo, ARM::VST1d8Q, false, false, false, SingleSpc, 4, 8 ,false},
385{ ARM::VST1d8QPseudoWB_fixed, ARM::VST1d8Qwb_fixed, false, true, false, SingleSpc, 4, 8 ,false},
386{ ARM::VST1d8QPseudoWB_register, ARM::VST1d8Qwb_register, false, true, true, SingleSpc, 4, 8 ,false},
387{ ARM::VST1d8TPseudo, ARM::VST1d8T, false, false, false, SingleSpc, 3, 8 ,false},
388{ ARM::VST1d8TPseudoWB_fixed, ARM::VST1d8Twb_fixed, false, true, false, SingleSpc, 3, 8 ,false},
389{ ARM::VST1d8TPseudoWB_register, ARM::VST1d8Twb_register, false, true, true, SingleSpc, 3, 8 ,false},
390
391{ ARM::VST1q16HighQPseudo, ARM::VST1d16Q, false, false, false, SingleHighQSpc, 4, 4 ,false},
392{ ARM::VST1q16HighQPseudo_UPD, ARM::VST1d16Qwb_fixed, false, true, true, SingleHighQSpc, 4, 8 ,false},
393{ ARM::VST1q16HighTPseudo, ARM::VST1d16T, false, false, false, SingleHighTSpc, 3, 4 ,false},
394{ ARM::VST1q16HighTPseudo_UPD, ARM::VST1d16Twb_fixed, false, true, true, SingleHighTSpc, 3, 4 ,false},
395{ ARM::VST1q16LowQPseudo_UPD, ARM::VST1d16Qwb_fixed, false, true, true, SingleLowSpc, 4, 4 ,false},
396{ ARM::VST1q16LowTPseudo_UPD, ARM::VST1d16Twb_fixed, false, true, true, SingleLowSpc, 3, 4 ,false},
397
398{ ARM::VST1q32HighQPseudo, ARM::VST1d32Q, false, false, false, SingleHighQSpc, 4, 2 ,false},
399{ ARM::VST1q32HighQPseudo_UPD, ARM::VST1d32Qwb_fixed, false, true, true, SingleHighQSpc, 4, 8 ,false},
400{ ARM::VST1q32HighTPseudo, ARM::VST1d32T, false, false, false, SingleHighTSpc, 3, 2 ,false},
401{ ARM::VST1q32HighTPseudo_UPD, ARM::VST1d32Twb_fixed, false, true, true, SingleHighTSpc, 3, 2 ,false},
402{ ARM::VST1q32LowQPseudo_UPD, ARM::VST1d32Qwb_fixed, false, true, true, SingleLowSpc, 4, 2 ,false},
403{ ARM::VST1q32LowTPseudo_UPD, ARM::VST1d32Twb_fixed, false, true, true, SingleLowSpc, 3, 2 ,false},
404
405{ ARM::VST1q64HighQPseudo, ARM::VST1d64Q, false, false, false, SingleHighQSpc, 4, 1 ,false},
406{ ARM::VST1q64HighQPseudo_UPD, ARM::VST1d64Qwb_fixed, false, true, true, SingleHighQSpc, 4, 8 ,false},
407{ ARM::VST1q64HighTPseudo, ARM::VST1d64T, false, false, false, SingleHighTSpc, 3, 1 ,false},
408{ ARM::VST1q64HighTPseudo_UPD, ARM::VST1d64Twb_fixed, false, true, true, SingleHighTSpc, 3, 1 ,false},
409{ ARM::VST1q64LowQPseudo_UPD, ARM::VST1d64Qwb_fixed, false, true, true, SingleLowSpc, 4, 1 ,false},
410{ ARM::VST1q64LowTPseudo_UPD, ARM::VST1d64Twb_fixed, false, true, true, SingleLowSpc, 3, 1 ,false},
411
412{ ARM::VST1q8HighQPseudo, ARM::VST1d8Q, false, false, false, SingleHighQSpc, 4, 8 ,false},
413{ ARM::VST1q8HighQPseudo_UPD, ARM::VST1d8Qwb_fixed, false, true, true, SingleHighQSpc, 4, 8 ,false},
414{ ARM::VST1q8HighTPseudo, ARM::VST1d8T, false, false, false, SingleHighTSpc, 3, 8 ,false},
415{ ARM::VST1q8HighTPseudo_UPD, ARM::VST1d8Twb_fixed, false, true, true, SingleHighTSpc, 3, 8 ,false},
416{ ARM::VST1q8LowQPseudo_UPD, ARM::VST1d8Qwb_fixed, false, true, true, SingleLowSpc, 4, 8 ,false},
417{ ARM::VST1q8LowTPseudo_UPD, ARM::VST1d8Twb_fixed, false, true, true, SingleLowSpc, 3, 8 ,false},
418
419{ ARM::VST2LNd16Pseudo, ARM::VST2LNd16, false, false, false, SingleSpc, 2, 4 ,true},
420{ ARM::VST2LNd16Pseudo_UPD, ARM::VST2LNd16_UPD, false, true, true, SingleSpc, 2, 4 ,true},
421{ ARM::VST2LNd32Pseudo, ARM::VST2LNd32, false, false, false, SingleSpc, 2, 2 ,true},
422{ ARM::VST2LNd32Pseudo_UPD, ARM::VST2LNd32_UPD, false, true, true, SingleSpc, 2, 2 ,true},
423{ ARM::VST2LNd8Pseudo, ARM::VST2LNd8, false, false, false, SingleSpc, 2, 8 ,true},
424{ ARM::VST2LNd8Pseudo_UPD, ARM::VST2LNd8_UPD, false, true, true, SingleSpc, 2, 8 ,true},
425{ ARM::VST2LNq16Pseudo, ARM::VST2LNq16, false, false, false, EvenDblSpc, 2, 4,true},
426{ ARM::VST2LNq16Pseudo_UPD, ARM::VST2LNq16_UPD, false, true, true, EvenDblSpc, 2, 4,true},
427{ ARM::VST2LNq32Pseudo, ARM::VST2LNq32, false, false, false, EvenDblSpc, 2, 2,true},
428{ ARM::VST2LNq32Pseudo_UPD, ARM::VST2LNq32_UPD, false, true, true, EvenDblSpc, 2, 2,true},
429
430{ ARM::VST2q16Pseudo, ARM::VST2q16, false, false, false, SingleSpc, 4, 4 ,false},
431{ ARM::VST2q16PseudoWB_fixed, ARM::VST2q16wb_fixed, false, true, false, SingleSpc, 4, 4 ,false},
432{ ARM::VST2q16PseudoWB_register, ARM::VST2q16wb_register, false, true, true, SingleSpc, 4, 4 ,false},
433{ ARM::VST2q32Pseudo, ARM::VST2q32, false, false, false, SingleSpc, 4, 2 ,false},
434{ ARM::VST2q32PseudoWB_fixed, ARM::VST2q32wb_fixed, false, true, false, SingleSpc, 4, 2 ,false},
435{ ARM::VST2q32PseudoWB_register, ARM::VST2q32wb_register, false, true, true, SingleSpc, 4, 2 ,false},
436{ ARM::VST2q8Pseudo, ARM::VST2q8, false, false, false, SingleSpc, 4, 8 ,false},
437{ ARM::VST2q8PseudoWB_fixed, ARM::VST2q8wb_fixed, false, true, false, SingleSpc, 4, 8 ,false},
438{ ARM::VST2q8PseudoWB_register, ARM::VST2q8wb_register, false, true, true, SingleSpc, 4, 8 ,false},
439
440{ ARM::VST3LNd16Pseudo, ARM::VST3LNd16, false, false, false, SingleSpc, 3, 4 ,true},
441{ ARM::VST3LNd16Pseudo_UPD, ARM::VST3LNd16_UPD, false, true, true, SingleSpc, 3, 4 ,true},
442{ ARM::VST3LNd32Pseudo, ARM::VST3LNd32, false, false, false, SingleSpc, 3, 2 ,true},
443{ ARM::VST3LNd32Pseudo_UPD, ARM::VST3LNd32_UPD, false, true, true, SingleSpc, 3, 2 ,true},
444{ ARM::VST3LNd8Pseudo, ARM::VST3LNd8, false, false, false, SingleSpc, 3, 8 ,true},
445{ ARM::VST3LNd8Pseudo_UPD, ARM::VST3LNd8_UPD, false, true, true, SingleSpc, 3, 8 ,true},
446{ ARM::VST3LNq16Pseudo, ARM::VST3LNq16, false, false, false, EvenDblSpc, 3, 4,true},
447{ ARM::VST3LNq16Pseudo_UPD, ARM::VST3LNq16_UPD, false, true, true, EvenDblSpc, 3, 4,true},
448{ ARM::VST3LNq32Pseudo, ARM::VST3LNq32, false, false, false, EvenDblSpc, 3, 2,true},
449{ ARM::VST3LNq32Pseudo_UPD, ARM::VST3LNq32_UPD, false, true, true, EvenDblSpc, 3, 2,true},
450
451{ ARM::VST3d16Pseudo, ARM::VST3d16, false, false, false, SingleSpc, 3, 4 ,true},
452{ ARM::VST3d16Pseudo_UPD, ARM::VST3d16_UPD, false, true, true, SingleSpc, 3, 4 ,true},
453{ ARM::VST3d32Pseudo, ARM::VST3d32, false, false, false, SingleSpc, 3, 2 ,true},
454{ ARM::VST3d32Pseudo_UPD, ARM::VST3d32_UPD, false, true, true, SingleSpc, 3, 2 ,true},
455{ ARM::VST3d8Pseudo, ARM::VST3d8, false, false, false, SingleSpc, 3, 8 ,true},
456{ ARM::VST3d8Pseudo_UPD, ARM::VST3d8_UPD, false, true, true, SingleSpc, 3, 8 ,true},
457
458{ ARM::VST3q16Pseudo_UPD, ARM::VST3q16_UPD, false, true, true, EvenDblSpc, 3, 4 ,true},
459{ ARM::VST3q16oddPseudo, ARM::VST3q16, false, false, false, OddDblSpc, 3, 4 ,true},
460{ ARM::VST3q16oddPseudo_UPD, ARM::VST3q16_UPD, false, true, true, OddDblSpc, 3, 4 ,true},
461{ ARM::VST3q32Pseudo_UPD, ARM::VST3q32_UPD, false, true, true, EvenDblSpc, 3, 2 ,true},
462{ ARM::VST3q32oddPseudo, ARM::VST3q32, false, false, false, OddDblSpc, 3, 2 ,true},
463{ ARM::VST3q32oddPseudo_UPD, ARM::VST3q32_UPD, false, true, true, OddDblSpc, 3, 2 ,true},
464{ ARM::VST3q8Pseudo_UPD, ARM::VST3q8_UPD, false, true, true, EvenDblSpc, 3, 8 ,true},
465{ ARM::VST3q8oddPseudo, ARM::VST3q8, false, false, false, OddDblSpc, 3, 8 ,true},
466{ ARM::VST3q8oddPseudo_UPD, ARM::VST3q8_UPD, false, true, true, OddDblSpc, 3, 8 ,true},
467
468{ ARM::VST4LNd16Pseudo, ARM::VST4LNd16, false, false, false, SingleSpc, 4, 4 ,true},
469{ ARM::VST4LNd16Pseudo_UPD, ARM::VST4LNd16_UPD, false, true, true, SingleSpc, 4, 4 ,true},
470{ ARM::VST4LNd32Pseudo, ARM::VST4LNd32, false, false, false, SingleSpc, 4, 2 ,true},
471{ ARM::VST4LNd32Pseudo_UPD, ARM::VST4LNd32_UPD, false, true, true, SingleSpc, 4, 2 ,true},
472{ ARM::VST4LNd8Pseudo, ARM::VST4LNd8, false, false, false, SingleSpc, 4, 8 ,true},
473{ ARM::VST4LNd8Pseudo_UPD, ARM::VST4LNd8_UPD, false, true, true, SingleSpc, 4, 8 ,true},
474{ ARM::VST4LNq16Pseudo, ARM::VST4LNq16, false, false, false, EvenDblSpc, 4, 4,true},
475{ ARM::VST4LNq16Pseudo_UPD, ARM::VST4LNq16_UPD, false, true, true, EvenDblSpc, 4, 4,true},
476{ ARM::VST4LNq32Pseudo, ARM::VST4LNq32, false, false, false, EvenDblSpc, 4, 2,true},
477{ ARM::VST4LNq32Pseudo_UPD, ARM::VST4LNq32_UPD, false, true, true, EvenDblSpc, 4, 2,true},
478
479{ ARM::VST4d16Pseudo, ARM::VST4d16, false, false, false, SingleSpc, 4, 4 ,true},
480{ ARM::VST4d16Pseudo_UPD, ARM::VST4d16_UPD, false, true, true, SingleSpc, 4, 4 ,true},
481{ ARM::VST4d32Pseudo, ARM::VST4d32, false, false, false, SingleSpc, 4, 2 ,true},
482{ ARM::VST4d32Pseudo_UPD, ARM::VST4d32_UPD, false, true, true, SingleSpc, 4, 2 ,true},
483{ ARM::VST4d8Pseudo, ARM::VST4d8, false, false, false, SingleSpc, 4, 8 ,true},
484{ ARM::VST4d8Pseudo_UPD, ARM::VST4d8_UPD, false, true, true, SingleSpc, 4, 8 ,true},
485
486{ ARM::VST4q16Pseudo_UPD, ARM::VST4q16_UPD, false, true, true, EvenDblSpc, 4, 4 ,true},
487{ ARM::VST4q16oddPseudo, ARM::VST4q16, false, false, false, OddDblSpc, 4, 4 ,true},
488{ ARM::VST4q16oddPseudo_UPD, ARM::VST4q16_UPD, false, true, true, OddDblSpc, 4, 4 ,true},
489{ ARM::VST4q32Pseudo_UPD, ARM::VST4q32_UPD, false, true, true, EvenDblSpc, 4, 2 ,true},
490{ ARM::VST4q32oddPseudo, ARM::VST4q32, false, false, false, OddDblSpc, 4, 2 ,true},
491{ ARM::VST4q32oddPseudo_UPD, ARM::VST4q32_UPD, false, true, true, OddDblSpc, 4, 2 ,true},
492{ ARM::VST4q8Pseudo_UPD, ARM::VST4q8_UPD, false, true, true, EvenDblSpc, 4, 8 ,true},
493{ ARM::VST4q8oddPseudo, ARM::VST4q8, false, false, false, OddDblSpc, 4, 8 ,true},
494{ ARM::VST4q8oddPseudo_UPD, ARM::VST4q8_UPD, false, true, true, OddDblSpc, 4, 8 ,true}
495};
496
497/// LookupNEONLdSt - Search the NEONLdStTable for information about a NEON
498/// load or store pseudo instruction.
499static const NEONLdStTableEntry *LookupNEONLdSt(unsigned Opcode) {
500#ifndef NDEBUG
501 // Make sure the table is sorted.
502 static std::atomic<bool> TableChecked(false);
503 if (!TableChecked.load(std::memory_order_relaxed)) {
504 assert(llvm::is_sorted(NEONLdStTable) && "NEONLdStTable is not sorted!");
505 TableChecked.store(true, std::memory_order_relaxed);
506 }
507#endif
508
509 auto I = llvm::lower_bound(NEONLdStTable, Opcode);
510 if (I != std::end(NEONLdStTable) && I->PseudoOpc == Opcode)
511 return I;
512 return nullptr;
513}
514
515/// GetDSubRegs - Get 4 D subregisters of a Q, QQ, or QQQQ register,
516/// corresponding to the specified register spacing. Not all of the results
517/// are necessarily valid, e.g., a Q register only has 2 D subregisters.
518static void GetDSubRegs(unsigned Reg, NEONRegSpacing RegSpc,
519 const TargetRegisterInfo *TRI, unsigned &D0,
520 unsigned &D1, unsigned &D2, unsigned &D3) {
521 if (RegSpc == SingleSpc || RegSpc == SingleLowSpc) {
522 D0 = TRI->getSubReg(Reg, ARM::dsub_0);
523 D1 = TRI->getSubReg(Reg, ARM::dsub_1);
524 D2 = TRI->getSubReg(Reg, ARM::dsub_2);
525 D3 = TRI->getSubReg(Reg, ARM::dsub_3);
526 } else if (RegSpc == SingleHighQSpc) {
527 D0 = TRI->getSubReg(Reg, ARM::dsub_4);
528 D1 = TRI->getSubReg(Reg, ARM::dsub_5);
529 D2 = TRI->getSubReg(Reg, ARM::dsub_6);
530 D3 = TRI->getSubReg(Reg, ARM::dsub_7);
531 } else if (RegSpc == SingleHighTSpc) {
532 D0 = TRI->getSubReg(Reg, ARM::dsub_3);
533 D1 = TRI->getSubReg(Reg, ARM::dsub_4);
534 D2 = TRI->getSubReg(Reg, ARM::dsub_5);
535 D3 = TRI->getSubReg(Reg, ARM::dsub_6);
536 } else if (RegSpc == EvenDblSpc) {
537 D0 = TRI->getSubReg(Reg, ARM::dsub_0);
538 D1 = TRI->getSubReg(Reg, ARM::dsub_2);
539 D2 = TRI->getSubReg(Reg, ARM::dsub_4);
540 D3 = TRI->getSubReg(Reg, ARM::dsub_6);
541 } else {
542 assert(RegSpc == OddDblSpc && "unknown register spacing");
543 D0 = TRI->getSubReg(Reg, ARM::dsub_1);
544 D1 = TRI->getSubReg(Reg, ARM::dsub_3);
545 D2 = TRI->getSubReg(Reg, ARM::dsub_5);
546 D3 = TRI->getSubReg(Reg, ARM::dsub_7);
547 }
548}
549
550/// ExpandVLD - Translate VLD pseudo instructions with Q, QQ or QQQQ register
551/// operands to real VLD instructions with D register operands.
552void ARMExpandPseudo::ExpandVLD(MachineBasicBlock::iterator &MBBI) {
553 MachineInstr &MI = *MBBI;
554 MachineBasicBlock &MBB = *MI.getParent();
555 LLVM_DEBUG(dbgs() << "Expanding: "; MI.dump());
556
557 const NEONLdStTableEntry *TableEntry = LookupNEONLdSt(MI.getOpcode());
558 assert(TableEntry && TableEntry->IsLoad && "NEONLdStTable lookup failed");
559 NEONRegSpacing RegSpc = (NEONRegSpacing)TableEntry->RegSpacing;
560 unsigned NumRegs = TableEntry->NumRegs;
561
562 MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
563 TII->get(TableEntry->RealOpc));
564 unsigned OpIdx = 0;
565
566 bool DstIsDead = MI.getOperand(OpIdx).isDead();
567 Register DstReg = MI.getOperand(OpIdx++).getReg();
568
569 bool IsVLD2DUP = TableEntry->RealOpc == ARM::VLD2DUPd8x2 ||
570 TableEntry->RealOpc == ARM::VLD2DUPd16x2 ||
571 TableEntry->RealOpc == ARM::VLD2DUPd32x2 ||
572 TableEntry->RealOpc == ARM::VLD2DUPd8x2wb_fixed ||
573 TableEntry->RealOpc == ARM::VLD2DUPd16x2wb_fixed ||
574 TableEntry->RealOpc == ARM::VLD2DUPd32x2wb_fixed ||
575 TableEntry->RealOpc == ARM::VLD2DUPd8x2wb_register ||
576 TableEntry->RealOpc == ARM::VLD2DUPd16x2wb_register ||
577 TableEntry->RealOpc == ARM::VLD2DUPd32x2wb_register;
578
579 if (IsVLD2DUP) {
580 unsigned SubRegIndex;
581 if (RegSpc == EvenDblSpc) {
582 SubRegIndex = ARM::dsub_0;
583 } else {
584 assert(RegSpc == OddDblSpc && "Unexpected spacing!");
585 SubRegIndex = ARM::dsub_1;
586 }
587 Register SubReg = TRI->getSubReg(DstReg, SubRegIndex);
588 unsigned DstRegPair = TRI->getMatchingSuperReg(SubReg, ARM::dsub_0,
589 &ARM::DPairSpcRegClass);
590 MIB.addReg(DstRegPair, RegState::Define | getDeadRegState(DstIsDead));
591 } else {
592 unsigned D0, D1, D2, D3;
593 GetDSubRegs(DstReg, RegSpc, TRI, D0, D1, D2, D3);
594 MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead));
595 if (NumRegs > 1 && TableEntry->copyAllListRegs)
596 MIB.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
597 if (NumRegs > 2 && TableEntry->copyAllListRegs)
598 MIB.addReg(D2, RegState::Define | getDeadRegState(DstIsDead));
599 if (NumRegs > 3 && TableEntry->copyAllListRegs)
600 MIB.addReg(D3, RegState::Define | getDeadRegState(DstIsDead));
601 }
602
603 if (TableEntry->isUpdating)
604 MIB.add(MI.getOperand(OpIdx++));
605
606 // Copy the addrmode6 operands.
607 MIB.add(MI.getOperand(OpIdx++));
608 MIB.add(MI.getOperand(OpIdx++));
609
610 // Copy the am6offset operand.
611 if (TableEntry->hasWritebackOperand) {
612 // TODO: The writing-back pseudo instructions we translate here are all
613 // defined to take am6offset nodes that are capable to represent both fixed
614 // and register forms. Some real instructions, however, do not rely on
615 // am6offset and have separate definitions for such forms. When this is the
616 // case, fixed forms do not take any offset nodes, so here we skip them for
617 // such instructions. Once all real and pseudo writing-back instructions are
618 // rewritten without use of am6offset nodes, this code will go away.
619 const MachineOperand &AM6Offset = MI.getOperand(OpIdx++);
620 if (TableEntry->RealOpc == ARM::VLD1d8Qwb_fixed ||
621 TableEntry->RealOpc == ARM::VLD1d16Qwb_fixed ||
622 TableEntry->RealOpc == ARM::VLD1d32Qwb_fixed ||
623 TableEntry->RealOpc == ARM::VLD1d64Qwb_fixed ||
624 TableEntry->RealOpc == ARM::VLD1d8Twb_fixed ||
625 TableEntry->RealOpc == ARM::VLD1d16Twb_fixed ||
626 TableEntry->RealOpc == ARM::VLD1d32Twb_fixed ||
627 TableEntry->RealOpc == ARM::VLD1d64Twb_fixed ||
628 TableEntry->RealOpc == ARM::VLD2DUPd8x2wb_fixed ||
629 TableEntry->RealOpc == ARM::VLD2DUPd16x2wb_fixed ||
630 TableEntry->RealOpc == ARM::VLD2DUPd32x2wb_fixed) {
631 assert(AM6Offset.getReg() == 0 &&
632 "A fixed writing-back pseudo instruction provides an offset "
633 "register!");
634 } else {
635 MIB.add(AM6Offset);
636 }
637 }
638
639 // For an instruction writing double-spaced subregs, the pseudo instruction
640 // has an extra operand that is a use of the super-register. Record the
641 // operand index and skip over it.
642 unsigned SrcOpIdx = 0;
643 if (RegSpc == EvenDblSpc || RegSpc == OddDblSpc || RegSpc == SingleLowSpc ||
644 RegSpc == SingleHighQSpc || RegSpc == SingleHighTSpc)
645 SrcOpIdx = OpIdx++;
646
647 // Copy the predicate operands.
648 MIB.add(MI.getOperand(OpIdx++));
649 MIB.add(MI.getOperand(OpIdx++));
650
651 // Copy the super-register source operand used for double-spaced subregs over
652 // to the new instruction as an implicit operand.
653 if (SrcOpIdx != 0) {
654 MachineOperand MO = MI.getOperand(SrcOpIdx);
655 MO.setImplicit(true);
656 MIB.add(MO);
657 }
658 // Add an implicit def for the super-register.
659 MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
660 MIB.copyImplicitOps(MI);
661
662 // Transfer memoperands.
663 MIB.cloneMemRefs(MI);
664 MI.eraseFromParent();
665 LLVM_DEBUG(dbgs() << "To: "; MIB.getInstr()->dump(););
666}
667
668/// ExpandVST - Translate VST pseudo instructions with Q, QQ or QQQQ register
669/// operands to real VST instructions with D register operands.
670void ARMExpandPseudo::ExpandVST(MachineBasicBlock::iterator &MBBI) {
671 MachineInstr &MI = *MBBI;
672 MachineBasicBlock &MBB = *MI.getParent();
673 LLVM_DEBUG(dbgs() << "Expanding: "; MI.dump());
674
675 const NEONLdStTableEntry *TableEntry = LookupNEONLdSt(MI.getOpcode());
676 assert(TableEntry && !TableEntry->IsLoad && "NEONLdStTable lookup failed");
677 NEONRegSpacing RegSpc = (NEONRegSpacing)TableEntry->RegSpacing;
678 unsigned NumRegs = TableEntry->NumRegs;
679
680 MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
681 TII->get(TableEntry->RealOpc));
682 unsigned OpIdx = 0;
683 if (TableEntry->isUpdating)
684 MIB.add(MI.getOperand(OpIdx++));
685
686 // Copy the addrmode6 operands.
687 MIB.add(MI.getOperand(OpIdx++));
688 MIB.add(MI.getOperand(OpIdx++));
689
690 if (TableEntry->hasWritebackOperand) {
691 // TODO: The writing-back pseudo instructions we translate here are all
692 // defined to take am6offset nodes that are capable to represent both fixed
693 // and register forms. Some real instructions, however, do not rely on
694 // am6offset and have separate definitions for such forms. When this is the
695 // case, fixed forms do not take any offset nodes, so here we skip them for
696 // such instructions. Once all real and pseudo writing-back instructions are
697 // rewritten without use of am6offset nodes, this code will go away.
698 const MachineOperand &AM6Offset = MI.getOperand(OpIdx++);
699 if (TableEntry->RealOpc == ARM::VST1d8Qwb_fixed ||
700 TableEntry->RealOpc == ARM::VST1d16Qwb_fixed ||
701 TableEntry->RealOpc == ARM::VST1d32Qwb_fixed ||
702 TableEntry->RealOpc == ARM::VST1d64Qwb_fixed ||
703 TableEntry->RealOpc == ARM::VST1d8Twb_fixed ||
704 TableEntry->RealOpc == ARM::VST1d16Twb_fixed ||
705 TableEntry->RealOpc == ARM::VST1d32Twb_fixed ||
706 TableEntry->RealOpc == ARM::VST1d64Twb_fixed) {
707 assert(AM6Offset.getReg() == 0 &&
708 "A fixed writing-back pseudo instruction provides an offset "
709 "register!");
710 } else {
711 MIB.add(AM6Offset);
712 }
713 }
714
715 bool SrcIsKill = MI.getOperand(OpIdx).isKill();
716 bool SrcIsUndef = MI.getOperand(OpIdx).isUndef();
717 Register SrcReg = MI.getOperand(OpIdx++).getReg();
718 unsigned D0, D1, D2, D3;
719 GetDSubRegs(SrcReg, RegSpc, TRI, D0, D1, D2, D3);
720 MIB.addReg(D0, getUndefRegState(SrcIsUndef));
721 if (NumRegs > 1 && TableEntry->copyAllListRegs)
722 MIB.addReg(D1, getUndefRegState(SrcIsUndef));
723 if (NumRegs > 2 && TableEntry->copyAllListRegs)
724 MIB.addReg(D2, getUndefRegState(SrcIsUndef));
725 if (NumRegs > 3 && TableEntry->copyAllListRegs)
726 MIB.addReg(D3, getUndefRegState(SrcIsUndef));
727
728 // Copy the predicate operands.
729 MIB.add(MI.getOperand(OpIdx++));
730 MIB.add(MI.getOperand(OpIdx++));
731
732 if (SrcIsKill && !SrcIsUndef) // Add an implicit kill for the super-reg.
733 MIB->addRegisterKilled(SrcReg, TRI, true);
734 else if (!SrcIsUndef)
735 MIB.addReg(SrcReg, RegState::Implicit); // Add implicit uses for src reg.
736 MIB.copyImplicitOps(MI);
737
738 // Transfer memoperands.
739 MIB.cloneMemRefs(MI);
740 MI.eraseFromParent();
741 LLVM_DEBUG(dbgs() << "To: "; MIB.getInstr()->dump(););
742}
743
744/// ExpandLaneOp - Translate VLD*LN and VST*LN instructions with Q, QQ or QQQQ
745/// register operands to real instructions with D register operands.
746void ARMExpandPseudo::ExpandLaneOp(MachineBasicBlock::iterator &MBBI) {
747 MachineInstr &MI = *MBBI;
748 MachineBasicBlock &MBB = *MI.getParent();
749 LLVM_DEBUG(dbgs() << "Expanding: "; MI.dump());
750
751 const NEONLdStTableEntry *TableEntry = LookupNEONLdSt(MI.getOpcode());
752 assert(TableEntry && "NEONLdStTable lookup failed");
753 NEONRegSpacing RegSpc = (NEONRegSpacing)TableEntry->RegSpacing;
754 unsigned NumRegs = TableEntry->NumRegs;
755 unsigned RegElts = TableEntry->RegElts;
756
757 MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
758 TII->get(TableEntry->RealOpc));
759 unsigned OpIdx = 0;
760 // The lane operand is always the 3rd from last operand, before the 2
761 // predicate operands.
762 unsigned Lane = MI.getOperand(MI.getDesc().getNumOperands() - 3).getImm();
763
764 // Adjust the lane and spacing as needed for Q registers.
765 assert(RegSpc != OddDblSpc && "unexpected register spacing for VLD/VST-lane");
766 if (RegSpc == EvenDblSpc && Lane >= RegElts) {
767 RegSpc = OddDblSpc;
768 Lane -= RegElts;
769 }
770 assert(Lane < RegElts && "out of range lane for VLD/VST-lane");
771
772 unsigned D0 = 0, D1 = 0, D2 = 0, D3 = 0;
773 unsigned DstReg = 0;
774 bool DstIsDead = false;
775 if (TableEntry->IsLoad) {
776 DstIsDead = MI.getOperand(OpIdx).isDead();
777 DstReg = MI.getOperand(OpIdx++).getReg();
778 GetDSubRegs(DstReg, RegSpc, TRI, D0, D1, D2, D3);
779 MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead));
780 if (NumRegs > 1)
781 MIB.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
782 if (NumRegs > 2)
783 MIB.addReg(D2, RegState::Define | getDeadRegState(DstIsDead));
784 if (NumRegs > 3)
785 MIB.addReg(D3, RegState::Define | getDeadRegState(DstIsDead));
786 }
787
788 if (TableEntry->isUpdating)
789 MIB.add(MI.getOperand(OpIdx++));
790
791 // Copy the addrmode6 operands.
792 MIB.add(MI.getOperand(OpIdx++));
793 MIB.add(MI.getOperand(OpIdx++));
794 // Copy the am6offset operand.
795 if (TableEntry->hasWritebackOperand)
796 MIB.add(MI.getOperand(OpIdx++));
797
798 // Grab the super-register source.
799 MachineOperand MO = MI.getOperand(OpIdx++);
800 if (!TableEntry->IsLoad)
801 GetDSubRegs(MO.getReg(), RegSpc, TRI, D0, D1, D2, D3);
802
803 // Add the subregs as sources of the new instruction.
804 unsigned SrcFlags = (getUndefRegState(MO.isUndef()) |
805 getKillRegState(MO.isKill()));
806 MIB.addReg(D0, SrcFlags);
807 if (NumRegs > 1)
808 MIB.addReg(D1, SrcFlags);
809 if (NumRegs > 2)
810 MIB.addReg(D2, SrcFlags);
811 if (NumRegs > 3)
812 MIB.addReg(D3, SrcFlags);
813
814 // Add the lane number operand.
815 MIB.addImm(Lane);
816 OpIdx += 1;
817
818 // Copy the predicate operands.
819 MIB.add(MI.getOperand(OpIdx++));
820 MIB.add(MI.getOperand(OpIdx++));
821
822 // Copy the super-register source to be an implicit source.
823 MO.setImplicit(true);
824 MIB.add(MO);
825 if (TableEntry->IsLoad)
826 // Add an implicit def for the super-register.
827 MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
828 MIB.copyImplicitOps(MI);
829 // Transfer memoperands.
830 MIB.cloneMemRefs(MI);
831 MI.eraseFromParent();
832}
833
834/// ExpandVTBL - Translate VTBL and VTBX pseudo instructions with Q or QQ
835/// register operands to real instructions with D register operands.
836void ARMExpandPseudo::ExpandVTBL(MachineBasicBlock::iterator &MBBI,
837 unsigned Opc, bool IsExt) {
838 MachineInstr &MI = *MBBI;
839 MachineBasicBlock &MBB = *MI.getParent();
840 LLVM_DEBUG(dbgs() << "Expanding: "; MI.dump());
841
842 MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc));
843 unsigned OpIdx = 0;
844
845 // Transfer the destination register operand.
846 MIB.add(MI.getOperand(OpIdx++));
847 if (IsExt) {
848 MachineOperand VdSrc(MI.getOperand(OpIdx++));
849 MIB.add(VdSrc);
850 }
851
852 bool SrcIsKill = MI.getOperand(OpIdx).isKill();
853 Register SrcReg = MI.getOperand(OpIdx++).getReg();
854 unsigned D0, D1, D2, D3;
855 GetDSubRegs(SrcReg, SingleSpc, TRI, D0, D1, D2, D3);
856 MIB.addReg(D0);
857
858 // Copy the other source register operand.
859 MachineOperand VmSrc(MI.getOperand(OpIdx++));
860 MIB.add(VmSrc);
861
862 // Copy the predicate operands.
863 MIB.add(MI.getOperand(OpIdx++));
864 MIB.add(MI.getOperand(OpIdx++));
865
866 // Add an implicit kill and use for the super-reg.
867 MIB.addReg(SrcReg, RegState::Implicit | getKillRegState(SrcIsKill));
868 MIB.copyImplicitOps(MI);
869 MI.eraseFromParent();
870 LLVM_DEBUG(dbgs() << "To: "; MIB.getInstr()->dump(););
871}
872
873void ARMExpandPseudo::ExpandMQQPRLoadStore(MachineBasicBlock::iterator &MBBI) {
874 MachineInstr &MI = *MBBI;
875 MachineBasicBlock &MBB = *MI.getParent();
876 unsigned NewOpc =
877 MI.getOpcode() == ARM::MQQPRStore || MI.getOpcode() == ARM::MQQQQPRStore
878 ? ARM::VSTMDIA
879 : ARM::VLDMDIA;
880 MachineInstrBuilder MIB =
881 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
882
883 unsigned Flags = getKillRegState(MI.getOperand(0).isKill()) |
884 getDefRegState(MI.getOperand(0).isDef());
885 Register SrcReg = MI.getOperand(0).getReg();
886
887 // Copy the destination register.
888 MIB.add(MI.getOperand(1));
889 MIB.add(predOps(ARMCC::AL));
890 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_0), Flags);
891 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_1), Flags);
892 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_2), Flags);
893 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_3), Flags);
894 if (MI.getOpcode() == ARM::MQQQQPRStore ||
895 MI.getOpcode() == ARM::MQQQQPRLoad) {
896 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_4), Flags);
897 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_5), Flags);
898 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_6), Flags);
899 MIB.addReg(TRI->getSubReg(SrcReg, ARM::dsub_7), Flags);
900 }
901
902 if (NewOpc == ARM::VSTMDIA)
903 MIB.addReg(SrcReg, RegState::Implicit);
904
905 MIB.copyImplicitOps(MI);
906 MIB.cloneMemRefs(MI);
907 MI.eraseFromParent();
908}
909
910static bool IsAnAddressOperand(const MachineOperand &MO) {
911 // This check is overly conservative. Unless we are certain that the machine
912 // operand is not a symbol reference, we return that it is a symbol reference.
913 // This is important as the load pair may not be split up Windows.
914 switch (MO.getType()) {
915 case MachineOperand::MO_Register:
916 case MachineOperand::MO_Immediate:
917 case MachineOperand::MO_CImmediate:
918 case MachineOperand::MO_FPImmediate:
919 case MachineOperand::MO_ShuffleMask:
920 return false;
921 case MachineOperand::MO_MachineBasicBlock:
922 return true;
923 case MachineOperand::MO_FrameIndex:
924 return false;
925 case MachineOperand::MO_ConstantPoolIndex:
926 case MachineOperand::MO_TargetIndex:
927 case MachineOperand::MO_JumpTableIndex:
928 case MachineOperand::MO_ExternalSymbol:
929 case MachineOperand::MO_GlobalAddress:
930 case MachineOperand::MO_BlockAddress:
931 return true;
932 case MachineOperand::MO_RegisterMask:
933 case MachineOperand::MO_RegisterLiveOut:
934 return false;
935 case MachineOperand::MO_Metadata:
936 case MachineOperand::MO_MCSymbol:
937 return true;
938 case MachineOperand::MO_DbgInstrRef:
939 case MachineOperand::MO_CFIIndex:
940 return false;
941 case MachineOperand::MO_IntrinsicID:
942 case MachineOperand::MO_Predicate:
943 llvm_unreachable("should not exist post-isel");
944 }
945 llvm_unreachable("unhandled machine operand type");
946}
947
948static MachineOperand makeImplicit(const MachineOperand &MO) {
949 MachineOperand NewMO = MO;
950 NewMO.setImplicit();
951 return NewMO;
952}
953
954static MachineOperand getMovOperand(const MachineOperand &MO,
955 unsigned TargetFlag) {
956 unsigned TF = MO.getTargetFlags() | TargetFlag;
957 switch (MO.getType()) {
958 case MachineOperand::MO_Immediate: {
959 unsigned Imm = MO.getImm();
960 switch (TargetFlag) {
961 case ARMII::MO_HI_8_15:
962 Imm = (Imm >> 24) & 0xff;
963 break;
964 case ARMII::MO_HI_0_7:
965 Imm = (Imm >> 16) & 0xff;
966 break;
967 case ARMII::MO_LO_8_15:
968 Imm = (Imm >> 8) & 0xff;
969 break;
970 case ARMII::MO_LO_0_7:
971 Imm = Imm & 0xff;
972 break;
973 case ARMII::MO_HI16:
974 Imm = (Imm >> 16) & 0xffff;
975 break;
976 case ARMII::MO_LO16:
977 Imm = Imm & 0xffff;
978 break;
979 default:
980 llvm_unreachable("Only HI/LO target flags are expected");
981 }
982 return MachineOperand::CreateImm(Imm);
983 }
984 case MachineOperand::MO_ExternalSymbol:
985 return MachineOperand::CreateES(MO.getSymbolName(), TF);
986 case MachineOperand::MO_JumpTableIndex:
987 return MachineOperand::CreateJTI(MO.getIndex(), TF);
988 default:
989 return MachineOperand::CreateGA(MO.getGlobal(), MO.getOffset(), TF);
990 }
991}
992
993void ARMExpandPseudo::ExpandTMOV32BitImm(MachineBasicBlock &MBB,
994 MachineBasicBlock::iterator &MBBI) {
995 MachineInstr &MI = *MBBI;
996 Register DstReg = MI.getOperand(0).getReg();
997 bool DstIsDead = MI.getOperand(0).isDead();
998 const MachineOperand &MO = MI.getOperand(1);
999 unsigned MIFlags = MI.getFlags();
1000
1001 LLVM_DEBUG(dbgs() << "Expanding: "; MI.dump());
1002
1003 // Expand the mov into a sequence of mov/add+lsl of the individual bytes. We
1004 // want to avoid emitting any zero bytes, as they won't change the result, and
1005 // also don't want any pointless shifts, so instead of immediately emitting
1006 // the shift for a byte we keep track of how much we will need to shift and do
1007 // it before the next nonzero byte.
1008 unsigned PendingShift = 0;
1009 for (unsigned Byte = 0; Byte < 4; ++Byte) {
1010 unsigned Flag = Byte == 0 ? ARMII::MO_HI_8_15
1011 : Byte == 1 ? ARMII::MO_HI_0_7
1012 : Byte == 2 ? ARMII::MO_LO_8_15
1013 : ARMII::MO_LO_0_7;
1014 MachineOperand Operand = getMovOperand(MO, Flag);
1015 bool ZeroImm = Operand.isImm() && Operand.getImm() == 0;
1016 unsigned Op = PendingShift ? ARM::tADDi8 : ARM::tMOVi8;
1017
1018 // Emit the pending shift if we're going to emit this byte or if we've
1019 // reached the end.
1020 if (PendingShift && (!ZeroImm || Byte == 3)) {
1021 MachineInstr *Lsl =
1022 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::tLSLri), DstReg)
1023 .add(t1CondCodeOp(true))
1024 .addReg(DstReg)
1025 .addImm(PendingShift)
1026 .add(predOps(ARMCC::AL))
1027 .setMIFlags(MIFlags);
1028 (void)Lsl;
1029 LLVM_DEBUG(dbgs() << "And: "; Lsl->dump(););
1030 PendingShift = 0;
1031 }
1032
1033 // Emit this byte if it's nonzero.
1034 if (!ZeroImm) {
1035 MachineInstrBuilder MIB =
1036 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Op), DstReg)
1037 .add(t1CondCodeOp(true));
1038 if (Op == ARM::tADDi8)
1039 MIB.addReg(DstReg);
1040 MIB.add(Operand);
1041 MIB.add(predOps(ARMCC::AL));
1042 MIB.setMIFlags(MIFlags);
1043 LLVM_DEBUG(dbgs() << (Op == ARM::tMOVi8 ? "To: " : "And:") << " ";
1044 MIB.getInstr()->dump(););
1045 }
1046
1047 // Don't accumulate the shift value if we've not yet seen a nonzero byte.
1048 if (PendingShift || !ZeroImm)
1049 PendingShift += 8;
1050 }
1051
1052 // The dest is dead on the last instruction we emitted if it was dead on the
1053 // original instruction.
1054 (--MBBI)->getOperand(0).setIsDead(DstIsDead);
1055
1056 MI.eraseFromParent();
1057}
1058
1059void ARMExpandPseudo::ExpandMOV32BitImm(MachineBasicBlock &MBB,
1060 MachineBasicBlock::iterator &MBBI) {
1061 MachineInstr &MI = *MBBI;
1062 unsigned Opcode = MI.getOpcode();
1063 Register PredReg;
1064 ARMCC::CondCodes Pred = getInstrPredicate(MI, PredReg);
1065 Register DstReg = MI.getOperand(0).getReg();
1066 bool DstIsDead = MI.getOperand(0).isDead();
1067 bool isCC = Opcode == ARM::MOVCCi32imm || Opcode == ARM::t2MOVCCi32imm;
1068 const MachineOperand &MO = MI.getOperand(isCC ? 2 : 1);
1069 bool RequiresBundling = STI->isTargetWindows() && IsAnAddressOperand(MO);
1070 MachineInstrBuilder LO16, HI16;
1071 LLVM_DEBUG(dbgs() << "Expanding: "; MI.dump());
1072
1073 if (!STI->hasV6T2Ops() &&
1074 (Opcode == ARM::MOVi32imm || Opcode == ARM::MOVCCi32imm)) {
1075 // FIXME Windows CE supports older ARM CPUs
1076 assert(!STI->isTargetWindows() && "Windows on ARM requires ARMv7+");
1077
1078 assert (MO.isImm() && "MOVi32imm w/ non-immediate source operand!");
1079 unsigned ImmVal = (unsigned)MO.getImm();
1080 unsigned SOImmValV1 = 0, SOImmValV2 = 0;
1081
1082 if (ARM_AM::isSOImmTwoPartVal(ImmVal)) { // Expand into a movi + orr.
1083 LO16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVi), DstReg);
1084 HI16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::ORRri))
1085 .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
1086 .addReg(DstReg);
1087 SOImmValV1 = ARM_AM::getSOImmTwoPartFirst(ImmVal);
1088 SOImmValV2 = ARM_AM::getSOImmTwoPartSecond(ImmVal);
1089 } else { // Expand into a mvn + sub.
1090 LO16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MVNi), DstReg);
1091 HI16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::SUBri))
1092 .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
1093 .addReg(DstReg);
1094 SOImmValV1 = ARM_AM::getSOImmTwoPartFirst(-ImmVal);
1095 SOImmValV2 = ARM_AM::getSOImmTwoPartSecond(-ImmVal);
1096 SOImmValV1 = ~(-SOImmValV1);
1097 }
1098
1099 unsigned MIFlags = MI.getFlags();
1100 LO16 = LO16.addImm(SOImmValV1);
1101 HI16 = HI16.addImm(SOImmValV2);
1102 LO16.cloneMemRefs(MI);
1103 HI16.cloneMemRefs(MI);
1104 LO16.setMIFlags(MIFlags);
1105 HI16.setMIFlags(MIFlags);
1106 LO16.addImm(Pred).addReg(PredReg).add(condCodeOp());
1107 HI16.addImm(Pred).addReg(PredReg).add(condCodeOp());
1108 if (isCC)
1109 LO16.add(makeImplicit(MI.getOperand(1)));
1110 LO16.copyImplicitOps(MI);
1111 HI16.copyImplicitOps(MI);
1112 MI.eraseFromParent();
1113 return;
1114 }
1115
1116 unsigned LO16Opc = 0;
1117 unsigned HI16Opc = 0;
1118 unsigned MIFlags = MI.getFlags();
1119 if (Opcode == ARM::t2MOVi32imm || Opcode == ARM::t2MOVCCi32imm) {
1120 LO16Opc = ARM::t2MOVi16;
1121 HI16Opc = ARM::t2MOVTi16;
1122 } else {
1123 LO16Opc = ARM::MOVi16;
1124 HI16Opc = ARM::MOVTi16;
1125 }
1126
1127 LO16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(LO16Opc), DstReg);
1128 LO16.setMIFlags(MIFlags);
1129 LO16.add(getMovOperand(MO, ARMII::MO_LO16));
1130 LO16.cloneMemRefs(MI);
1131 LO16.addImm(Pred).addReg(PredReg);
1132 if (isCC)
1133 LO16.add(makeImplicit(MI.getOperand(1)));
1134 LO16.copyImplicitOps(MI);
1135 LLVM_DEBUG(dbgs() << "To: "; LO16.getInstr()->dump(););
1136
1137 MachineOperand HIOperand = getMovOperand(MO, ARMII::MO_HI16);
1138 if (!(HIOperand.isImm() && HIOperand.getImm() == 0)) {
1139 HI16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(HI16Opc))
1140 .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
1141 .addReg(DstReg);
1142 HI16.setMIFlags(MIFlags);
1143 HI16.add(HIOperand);
1144 HI16.cloneMemRefs(MI);
1145 HI16.addImm(Pred).addReg(PredReg);
1146 HI16.copyImplicitOps(MI);
1147 LLVM_DEBUG(dbgs() << "And: "; HI16.getInstr()->dump(););
1148 } else {
1149 LO16->getOperand(0).setIsDead(DstIsDead);
1150 }
1151
1152 if (RequiresBundling)
1153 finalizeBundle(MBB, LO16->getIterator(), MBBI->getIterator());
1154
1155 MI.eraseFromParent();
1156}
1157
1158// The size of the area, accessed by that VLSTM/VLLDM
1159// S0-S31 + FPSCR + 8 more bytes (VPR + pad, or just pad)
1160static const int CMSE_FP_SAVE_SIZE = 136;
1161
1162static void determineGPRegsToClear(const MachineInstr &MI,
1163 const std::initializer_list<unsigned> &Regs,
1164 SmallVectorImpl<unsigned> &ClearRegs) {
1165 SmallVector<unsigned, 4> OpRegs;
1166 for (const MachineOperand &Op : MI.operands()) {
1167 if (!Op.isReg() || !Op.isUse())
1168 continue;
1169 OpRegs.push_back(Op.getReg());
1170 }
1171 llvm::sort(OpRegs);
1172
1173 std::set_difference(Regs.begin(), Regs.end(), OpRegs.begin(), OpRegs.end(),
1174 std::back_inserter(ClearRegs));
1175}
1176
1177void ARMExpandPseudo::CMSEClearGPRegs(
1178 MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
1179 const DebugLoc &DL, const SmallVectorImpl<unsigned> &ClearRegs,
1180 unsigned ClobberReg) {
1181
1182 if (STI->hasV8_1MMainlineOps()) {
1183 // Clear the registers using the CLRM instruction.
1184 MachineInstrBuilder CLRM =
1185 BuildMI(MBB, MBBI, DL, TII->get(ARM::t2CLRM)).add(predOps(ARMCC::AL));
1186 for (unsigned R : ClearRegs)
1187 CLRM.addReg(R, RegState::Define);
1188 CLRM.addReg(ARM::APSR, RegState::Define);
1189 CLRM.addReg(ARM::CPSR, RegState::Define | RegState::Implicit);
1190 } else {
1191 // Clear the registers and flags by copying ClobberReg into them.
1192 // (Baseline can't do a high register clear in one instruction).
1193 for (unsigned Reg : ClearRegs) {
1194 if (Reg == ClobberReg)
1195 continue;
1196 BuildMI(MBB, MBBI, DL, TII->get(ARM::tMOVr), Reg)
1197 .addReg(ClobberReg)
1198 .add(predOps(ARMCC::AL));
1199 }
1200
1201 BuildMI(MBB, MBBI, DL, TII->get(ARM::t2MSR_M))
1202 .addImm(STI->hasDSP() ? 0xc00 : 0x800)
1203 .addReg(ClobberReg)
1204 .add(predOps(ARMCC::AL));
1205 }
1206}
1207
1208// Find which FP registers need to be cleared. The parameter `ClearRegs` is
1209// initialised with all elements set to true, and this function resets all the
1210// bits, which correspond to register uses. Returns true if any floating point
1211// register is defined, false otherwise.
1212static bool determineFPRegsToClear(const MachineInstr &MI,
1213 BitVector &ClearRegs) {
1214 bool DefFP = false;
1215 for (const MachineOperand &Op : MI.operands()) {
1216 if (!Op.isReg())
1217 continue;
1218
1219 Register Reg = Op.getReg();
1220 if (Op.isDef()) {
1221 if ((Reg >= ARM::Q0 && Reg <= ARM::Q7) ||
1222 (Reg >= ARM::D0 && Reg <= ARM::D15) ||
1223 (Reg >= ARM::S0 && Reg <= ARM::S31))
1224 DefFP = true;
1225 continue;
1226 }
1227
1228 if (Reg >= ARM::Q0 && Reg <= ARM::Q7) {
1229 int R = Reg - ARM::Q0;
1230 ClearRegs.reset(R * 4, (R + 1) * 4);
1231 } else if (Reg >= ARM::D0 && Reg <= ARM::D15) {
1232 int R = Reg - ARM::D0;
1233 ClearRegs.reset(R * 2, (R + 1) * 2);
1234 } else if (Reg >= ARM::S0 && Reg <= ARM::S31) {
1235 ClearRegs[Reg - ARM::S0] = false;
1236 }
1237 }
1238 return DefFP;
1239}
1240
1241MachineBasicBlock &
1242ARMExpandPseudo::CMSEClearFPRegs(MachineBasicBlock &MBB,
1243 MachineBasicBlock::iterator MBBI) {
1244 BitVector ClearRegs(16, true);
1245 (void)determineFPRegsToClear(*MBBI, ClearRegs);
1246
1247 if (STI->hasV8_1MMainlineOps())
1248 return CMSEClearFPRegsV81(MBB, MBBI, ClearRegs);
1249 else
1250 return CMSEClearFPRegsV8(MBB, MBBI, ClearRegs);
1251}
1252
1253// Clear the FP registers for v8.0-M, by copying over the content
1254// of LR. Uses R12 as a scratch register.
1255MachineBasicBlock &
1256ARMExpandPseudo::CMSEClearFPRegsV8(MachineBasicBlock &MBB,
1257 MachineBasicBlock::iterator MBBI,
1258 const BitVector &ClearRegs) {
1259 if (!STI->hasFPRegs())
1260 return MBB;
1261
1262 auto &RetI = *MBBI;
1263 const DebugLoc &DL = RetI.getDebugLoc();
1264
1265 // If optimising for minimum size, clear FP registers unconditionally.
1266 // Otherwise, check the CONTROL.SFPA (Secure Floating-Point Active) bit and
1267 // don't clear them if they belong to the non-secure state.
1268 MachineBasicBlock *ClearBB, *DoneBB;
1269 if (STI->hasMinSize()) {
1270 ClearBB = DoneBB = &MBB;
1271 } else {
1272 MachineFunction *MF = MBB.getParent();
1273 ClearBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1274 DoneBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1275
1276 MF->insert(++MBB.getIterator(), ClearBB);
1277 MF->insert(++ClearBB->getIterator(), DoneBB);
1278
1279 DoneBB->splice(DoneBB->end(), &MBB, MBBI, MBB.end());
1280 DoneBB->transferSuccessors(&MBB);
1281 MBB.addSuccessor(ClearBB);
1282 MBB.addSuccessor(DoneBB);
1283 ClearBB->addSuccessor(DoneBB);
1284
1285 // At the new basic blocks we need to have live-in the registers, used
1286 // for the return value as well as LR, used to clear registers.
1287 for (const MachineOperand &Op : RetI.operands()) {
1288 if (!Op.isReg())
1289 continue;
1290 Register Reg = Op.getReg();
1291 if (Reg == ARM::NoRegister || Reg == ARM::LR)
1292 continue;
1293 assert(Reg.isPhysical() && "Unallocated register");
1294 ClearBB->addLiveIn(Reg);
1295 DoneBB->addLiveIn(Reg);
1296 }
1297 ClearBB->addLiveIn(ARM::LR);
1298 DoneBB->addLiveIn(ARM::LR);
1299
1300 // Read the CONTROL register.
1301 BuildMI(MBB, MBB.end(), DL, TII->get(ARM::t2MRS_M), ARM::R12)
1302 .addImm(20)
1303 .add(predOps(ARMCC::AL));
1304 // Check bit 3 (SFPA).
1305 BuildMI(MBB, MBB.end(), DL, TII->get(ARM::t2TSTri))
1306 .addReg(ARM::R12)
1307 .addImm(8)
1308 .add(predOps(ARMCC::AL));
1309 // If SFPA is clear, jump over ClearBB to DoneBB.
1310 BuildMI(MBB, MBB.end(), DL, TII->get(ARM::tBcc))
1311 .addMBB(DoneBB)
1312 .addImm(ARMCC::EQ)
1313 .addReg(ARM::CPSR, RegState::Kill);
1314 }
1315
1316 // Emit the clearing sequence
1317 for (unsigned D = 0; D < 8; D++) {
1318 // Attempt to clear as double
1319 if (ClearRegs[D * 2 + 0] && ClearRegs[D * 2 + 1]) {
1320 unsigned Reg = ARM::D0 + D;
1321 BuildMI(ClearBB, DL, TII->get(ARM::VMOVDRR), Reg)
1322 .addReg(ARM::LR)
1323 .addReg(ARM::LR)
1324 .add(predOps(ARMCC::AL));
1325 } else {
1326 // Clear first part as single
1327 if (ClearRegs[D * 2 + 0]) {
1328 unsigned Reg = ARM::S0 + D * 2;
1329 BuildMI(ClearBB, DL, TII->get(ARM::VMOVSR), Reg)
1330 .addReg(ARM::LR)
1331 .add(predOps(ARMCC::AL));
1332 }
1333 // Clear second part as single
1334 if (ClearRegs[D * 2 + 1]) {
1335 unsigned Reg = ARM::S0 + D * 2 + 1;
1336 BuildMI(ClearBB, DL, TII->get(ARM::VMOVSR), Reg)
1337 .addReg(ARM::LR)
1338 .add(predOps(ARMCC::AL));
1339 }
1340 }
1341 }
1342
1343 // Clear FPSCR bits 0-4, 7, 28-31
1344 // The other bits are program global according to the AAPCS
1345 BuildMI(ClearBB, DL, TII->get(ARM::VMRS), ARM::R12)
1346 .add(predOps(ARMCC::AL));
1347 BuildMI(ClearBB, DL, TII->get(ARM::t2BICri), ARM::R12)
1348 .addReg(ARM::R12)
1349 .addImm(0x0000009F)
1350 .add(predOps(ARMCC::AL))
1351 .add(condCodeOp());
1352 BuildMI(ClearBB, DL, TII->get(ARM::t2BICri), ARM::R12)
1353 .addReg(ARM::R12)
1354 .addImm(0xF0000000)
1355 .add(predOps(ARMCC::AL))
1356 .add(condCodeOp());
1357 BuildMI(ClearBB, DL, TII->get(ARM::VMSR))
1358 .addReg(ARM::R12)
1359 .add(predOps(ARMCC::AL));
1360
1361 return *DoneBB;
1362}
1363
1364MachineBasicBlock &
1365ARMExpandPseudo::CMSEClearFPRegsV81(MachineBasicBlock &MBB,
1366 MachineBasicBlock::iterator MBBI,
1367 const BitVector &ClearRegs) {
1368 auto &RetI = *MBBI;
1369
1370 // Emit a sequence of VSCCLRM <sreglist> instructions, one instruction for
1371 // each contiguous sequence of S-registers.
1372 int Start = -1, End = -1;
1373 for (int S = 0, E = ClearRegs.size(); S != E; ++S) {
1374 if (ClearRegs[S] && S == End + 1) {
1375 End = S; // extend range
1376 continue;
1377 }
1378 // Emit current range.
1379 if (Start < End) {
1380 MachineInstrBuilder VSCCLRM =
1381 BuildMI(MBB, MBBI, RetI.getDebugLoc(), TII->get(ARM::VSCCLRMS))
1382 .add(predOps(ARMCC::AL));
1383 while (++Start <= End)
1384 VSCCLRM.addReg(ARM::S0 + Start, RegState::Define);
1385 VSCCLRM.addReg(ARM::VPR, RegState::Define);
1386 }
1387 Start = End = S;
1388 }
1389 // Emit last range.
1390 if (Start < End) {
1391 MachineInstrBuilder VSCCLRM =
1392 BuildMI(MBB, MBBI, RetI.getDebugLoc(), TII->get(ARM::VSCCLRMS))
1393 .add(predOps(ARMCC::AL));
1394 while (++Start <= End)
1395 VSCCLRM.addReg(ARM::S0 + Start, RegState::Define);
1396 VSCCLRM.addReg(ARM::VPR, RegState::Define);
1397 }
1398
1399 return MBB;
1400}
1401
1402void ARMExpandPseudo::CMSESaveClearFPRegs(
1403 MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, DebugLoc &DL,
1404 const LivePhysRegs &LiveRegs, SmallVectorImpl<unsigned> &ScratchRegs) {
1405 if (STI->hasV8_1MMainlineOps())
1406 CMSESaveClearFPRegsV81(MBB, MBBI, DL, LiveRegs);
1407 else if (STI->hasV8MMainlineOps())
1408 CMSESaveClearFPRegsV8(MBB, MBBI, DL, LiveRegs, ScratchRegs);
1409}
1410
1411// Save and clear FP registers if present
1412void ARMExpandPseudo::CMSESaveClearFPRegsV8(
1413 MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, DebugLoc &DL,
1414 const LivePhysRegs &LiveRegs, SmallVectorImpl<unsigned> &ScratchRegs) {
1415
1416 // Store an available register for FPSCR clearing
1417 assert(!ScratchRegs.empty());
1418 unsigned SpareReg = ScratchRegs.front();
1419
1420 // save space on stack for VLSTM
1421 BuildMI(MBB, MBBI, DL, TII->get(ARM::tSUBspi), ARM::SP)
1422 .addReg(ARM::SP)
1423 .addImm(CMSE_FP_SAVE_SIZE >> 2)
1424 .add(predOps(ARMCC::AL));
1425
1426 // Use ScratchRegs to store the fp regs
1427 std::vector<std::tuple<unsigned, unsigned, unsigned>> ClearedFPRegs;
1428 std::vector<unsigned> NonclearedFPRegs;
1429 for (const MachineOperand &Op : MBBI->operands()) {
1430 if (Op.isReg() && Op.isUse()) {
1431 Register Reg = Op.getReg();
1432 assert(!ARM::DPRRegClass.contains(Reg) ||
1433 ARM::DPR_VFP2RegClass.contains(Reg));
1434 assert(!ARM::QPRRegClass.contains(Reg));
1435 if (ARM::DPR_VFP2RegClass.contains(Reg)) {
1436 if (ScratchRegs.size() >= 2) {
1437 unsigned SaveReg2 = ScratchRegs.pop_back_val();
1438 unsigned SaveReg1 = ScratchRegs.pop_back_val();
1439 ClearedFPRegs.emplace_back(Reg, SaveReg1, SaveReg2);
1440
1441 // Save the fp register to the normal registers
1442 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVRRD))
1443 .addReg(SaveReg1, RegState::Define)
1444 .addReg(SaveReg2, RegState::Define)
1445 .addReg(Reg)
1446 .add(predOps(ARMCC::AL));
1447 } else {
1448 NonclearedFPRegs.push_back(Reg);
1449 }
1450 } else if (ARM::SPRRegClass.contains(Reg)) {
1451 if (ScratchRegs.size() >= 1) {
1452 unsigned SaveReg = ScratchRegs.pop_back_val();
1453 ClearedFPRegs.emplace_back(Reg, SaveReg, 0);
1454
1455 // Save the fp register to the normal registers
1456 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVRS), SaveReg)
1457 .addReg(Reg)
1458 .add(predOps(ARMCC::AL));
1459 } else {
1460 NonclearedFPRegs.push_back(Reg);
1461 }
1462 }
1463 }
1464 }
1465
1466 bool passesFPReg = (!NonclearedFPRegs.empty() || !ClearedFPRegs.empty());
1467
1468 if (passesFPReg)
1469 assert(STI->hasFPRegs() && "Subtarget needs fpregs");
1470
1471 // Lazy store all fp registers to the stack.
1472 // This executes as NOP in the absence of floating-point support.
1473 MachineInstrBuilder VLSTM =
1474 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLSTM))
1475 .addReg(ARM::SP)
1476 .add(predOps(ARMCC::AL))
1477 .addImm(0); // Represents a pseoudo register list, has no effect on
1478 // the encoding.
1479 // Mark non-live registers as undef
1480 for (MachineOperand &MO : VLSTM->implicit_operands()) {
1481 if (MO.isReg() && !MO.isDef()) {
1482 Register Reg = MO.getReg();
1483 MO.setIsUndef(!LiveRegs.contains(Reg));
1484 }
1485 }
1486
1487 // Restore all arguments
1488 for (const auto &Regs : ClearedFPRegs) {
1489 unsigned Reg, SaveReg1, SaveReg2;
1490 std::tie(Reg, SaveReg1, SaveReg2) = Regs;
1491 if (ARM::DPR_VFP2RegClass.contains(Reg))
1492 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVDRR), Reg)
1493 .addReg(SaveReg1)
1494 .addReg(SaveReg2)
1495 .add(predOps(ARMCC::AL));
1496 else if (ARM::SPRRegClass.contains(Reg))
1497 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVSR), Reg)
1498 .addReg(SaveReg1)
1499 .add(predOps(ARMCC::AL));
1500 }
1501
1502 for (unsigned Reg : NonclearedFPRegs) {
1503 if (ARM::DPR_VFP2RegClass.contains(Reg)) {
1504 if (STI->isLittle()) {
1505 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLDRD), Reg)
1506 .addReg(ARM::SP)
1507 .addImm((Reg - ARM::D0) * 2)
1508 .add(predOps(ARMCC::AL));
1509 } else {
1510 // For big-endian targets we need to load the two subregisters of Reg
1511 // manually because VLDRD would load them in wrong order
1512 unsigned SReg0 = TRI->getSubReg(Reg, ARM::ssub_0);
1513 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLDRS), SReg0)
1514 .addReg(ARM::SP)
1515 .addImm((Reg - ARM::D0) * 2)
1516 .add(predOps(ARMCC::AL));
1517 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLDRS), SReg0 + 1)
1518 .addReg(ARM::SP)
1519 .addImm((Reg - ARM::D0) * 2 + 1)
1520 .add(predOps(ARMCC::AL));
1521 }
1522 } else if (ARM::SPRRegClass.contains(Reg)) {
1523 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLDRS), Reg)
1524 .addReg(ARM::SP)
1525 .addImm(Reg - ARM::S0)
1526 .add(predOps(ARMCC::AL));
1527 }
1528 }
1529 // restore FPSCR from stack and clear bits 0-4, 7, 28-31
1530 // The other bits are program global according to the AAPCS
1531 if (passesFPReg) {
1532 BuildMI(MBB, MBBI, DL, TII->get(ARM::tLDRspi), SpareReg)
1533 .addReg(ARM::SP)
1534 .addImm(0x10)
1535 .add(predOps(ARMCC::AL));
1536 BuildMI(MBB, MBBI, DL, TII->get(ARM::t2BICri), SpareReg)
1537 .addReg(SpareReg)
1538 .addImm(0x0000009F)
1539 .add(predOps(ARMCC::AL))
1540 .add(condCodeOp());
1541 BuildMI(MBB, MBBI, DL, TII->get(ARM::t2BICri), SpareReg)
1542 .addReg(SpareReg)
1543 .addImm(0xF0000000)
1544 .add(predOps(ARMCC::AL))
1545 .add(condCodeOp());
1546 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMSR))
1547 .addReg(SpareReg)
1548 .add(predOps(ARMCC::AL));
1549 // The ldr must happen after a floating point instruction. To prevent the
1550 // post-ra scheduler to mess with the order, we create a bundle.
1551 finalizeBundle(MBB, VLSTM->getIterator(), MBBI->getIterator());
1552 }
1553}
1554
1555void ARMExpandPseudo::CMSESaveClearFPRegsV81(MachineBasicBlock &MBB,
1556 MachineBasicBlock::iterator MBBI,
1557 DebugLoc &DL,
1558 const LivePhysRegs &LiveRegs) {
1559 BitVector ClearRegs(32, true);
1560 bool DefFP = determineFPRegsToClear(*MBBI, ClearRegs);
1561
1562 // If the instruction does not write to a FP register and no elements were
1563 // removed from the set, then no FP registers were used to pass
1564 // arguments/returns.
1565 if (!DefFP && ClearRegs.count() == ClearRegs.size()) {
1566 // save space on stack for VLSTM
1567 BuildMI(MBB, MBBI, DL, TII->get(ARM::tSUBspi), ARM::SP)
1568 .addReg(ARM::SP)
1569 .addImm(CMSE_FP_SAVE_SIZE >> 2)
1570 .add(predOps(ARMCC::AL));
1571
1572 // Lazy store all FP registers to the stack
1573 MachineInstrBuilder VLSTM =
1574 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLSTM))
1575 .addReg(ARM::SP)
1576 .add(predOps(ARMCC::AL))
1577 .addImm(0); // Represents a pseoudo register list, has no effect on
1578 // the encoding.
1579 // Mark non-live registers as undef
1580 for (MachineOperand &MO : VLSTM->implicit_operands()) {
1581 if (MO.isReg() && MO.isImplicit() && !MO.isDef()) {
1582 Register Reg = MO.getReg();
1583 MO.setIsUndef(!LiveRegs.contains(Reg));
1584 }
1585 }
1586 } else {
1587 // Push all the callee-saved registers (s16-s31).
1588 MachineInstrBuilder VPUSH =
1589 BuildMI(MBB, MBBI, DL, TII->get(ARM::VSTMSDB_UPD), ARM::SP)
1590 .addReg(ARM::SP)
1591 .add(predOps(ARMCC::AL));
1592 for (int Reg = ARM::S16; Reg <= ARM::S31; ++Reg)
1593 VPUSH.addReg(Reg);
1594
1595 // Clear FP registers with a VSCCLRM.
1596 (void)CMSEClearFPRegsV81(MBB, MBBI, ClearRegs);
1597
1598 // Save floating-point context.
1599 BuildMI(MBB, MBBI, DL, TII->get(ARM::VSTR_FPCXTS_pre), ARM::SP)
1600 .addReg(ARM::SP)
1601 .addImm(-8)
1602 .add(predOps(ARMCC::AL));
1603 }
1604}
1605
1606// Restore FP registers if present
1607void ARMExpandPseudo::CMSERestoreFPRegs(
1608 MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, DebugLoc &DL,
1609 SmallVectorImpl<unsigned> &AvailableRegs) {
1610 if (STI->hasV8_1MMainlineOps())
1611 CMSERestoreFPRegsV81(MBB, MBBI, DL, AvailableRegs);
1612 else if (STI->hasV8MMainlineOps())
1613 CMSERestoreFPRegsV8(MBB, MBBI, DL, AvailableRegs);
1614}
1615
1616void ARMExpandPseudo::CMSERestoreFPRegsV8(
1617 MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, DebugLoc &DL,
1618 SmallVectorImpl<unsigned> &AvailableRegs) {
1619
1620 // Keep a scratch register for the mitigation sequence.
1621 unsigned ScratchReg = ARM::NoRegister;
1622 if (STI->fixCMSE_CVE_2021_35465())
1623 ScratchReg = AvailableRegs.pop_back_val();
1624
1625 // Use AvailableRegs to store the fp regs
1626 std::vector<std::tuple<unsigned, unsigned, unsigned>> ClearedFPRegs;
1627 std::vector<unsigned> NonclearedFPRegs;
1628 for (const MachineOperand &Op : MBBI->operands()) {
1629 if (Op.isReg() && Op.isDef()) {
1630 Register Reg = Op.getReg();
1631 assert(!ARM::DPRRegClass.contains(Reg) ||
1632 ARM::DPR_VFP2RegClass.contains(Reg));
1633 assert(!ARM::QPRRegClass.contains(Reg));
1634 if (ARM::DPR_VFP2RegClass.contains(Reg)) {
1635 if (AvailableRegs.size() >= 2) {
1636 unsigned SaveReg2 = AvailableRegs.pop_back_val();
1637 unsigned SaveReg1 = AvailableRegs.pop_back_val();
1638 ClearedFPRegs.emplace_back(Reg, SaveReg1, SaveReg2);
1639
1640 // Save the fp register to the normal registers
1641 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVRRD))
1642 .addReg(SaveReg1, RegState::Define)
1643 .addReg(SaveReg2, RegState::Define)
1644 .addReg(Reg)
1645 .add(predOps(ARMCC::AL));
1646 } else {
1647 NonclearedFPRegs.push_back(Reg);
1648 }
1649 } else if (ARM::SPRRegClass.contains(Reg)) {
1650 if (AvailableRegs.size() >= 1) {
1651 unsigned SaveReg = AvailableRegs.pop_back_val();
1652 ClearedFPRegs.emplace_back(Reg, SaveReg, 0);
1653
1654 // Save the fp register to the normal registers
1655 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVRS), SaveReg)
1656 .addReg(Reg)
1657 .add(predOps(ARMCC::AL));
1658 } else {
1659 NonclearedFPRegs.push_back(Reg);
1660 }
1661 }
1662 }
1663 }
1664
1665 bool returnsFPReg = (!NonclearedFPRegs.empty() || !ClearedFPRegs.empty());
1666
1667 if (returnsFPReg)
1668 assert(STI->hasFPRegs() && "Subtarget needs fpregs");
1669
1670 // Push FP regs that cannot be restored via normal registers on the stack
1671 for (unsigned Reg : NonclearedFPRegs) {
1672 if (ARM::DPR_VFP2RegClass.contains(Reg))
1673 BuildMI(MBB, MBBI, DL, TII->get(ARM::VSTRD))
1674 .addReg(Reg)
1675 .addReg(ARM::SP)
1676 .addImm((Reg - ARM::D0) * 2)
1677 .add(predOps(ARMCC::AL));
1678 else if (ARM::SPRRegClass.contains(Reg))
1679 BuildMI(MBB, MBBI, DL, TII->get(ARM::VSTRS))
1680 .addReg(Reg)
1681 .addReg(ARM::SP)
1682 .addImm(Reg - ARM::S0)
1683 .add(predOps(ARMCC::AL));
1684 }
1685
1686 // Lazy load fp regs from stack.
1687 // This executes as NOP in the absence of floating-point support.
1688 MachineInstrBuilder VLLDM =
1689 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLLDM))
1690 .addReg(ARM::SP)
1691 .add(predOps(ARMCC::AL))
1692 .addImm(0); // Represents a pseoudo register list, has no effect on
1693 // the encoding.
1694
1695 if (STI->fixCMSE_CVE_2021_35465()) {
1696 auto Bundler = MIBundleBuilder(MBB, VLLDM);
1697 // Read the CONTROL register.
1698 Bundler.append(BuildMI(*MBB.getParent(), DL, TII->get(ARM::t2MRS_M))
1699 .addReg(ScratchReg, RegState::Define)
1700 .addImm(20)
1701 .add(predOps(ARMCC::AL)));
1702 // Check bit 3 (SFPA).
1703 Bundler.append(BuildMI(*MBB.getParent(), DL, TII->get(ARM::t2TSTri))
1704 .addReg(ScratchReg)
1705 .addImm(8)
1706 .add(predOps(ARMCC::AL)));
1707 // Emit the IT block.
1708 Bundler.append(BuildMI(*MBB.getParent(), DL, TII->get(ARM::t2IT))
1709 .addImm(ARMCC::NE)
1710 .addImm(8));
1711 // If SFPA is clear jump over to VLLDM, otherwise execute an instruction
1712 // which has no functional effect apart from causing context creation:
1713 // vmovne s0, s0. In the absence of FPU we emit .inst.w 0xeeb00a40,
1714 // which is defined as NOP if not executed.
1715 if (STI->hasFPRegs())
1716 Bundler.append(BuildMI(*MBB.getParent(), DL, TII->get(ARM::VMOVS))
1717 .addReg(ARM::S0, RegState::Define)
1718 .addReg(ARM::S0, RegState::Undef)
1719 .add(predOps(ARMCC::NE)));
1720 else
1721 Bundler.append(BuildMI(*MBB.getParent(), DL, TII->get(ARM::INLINEASM))
1722 .addExternalSymbol(".inst.w 0xeeb00a40")
1723 .addImm(InlineAsm::Extra_HasSideEffects));
1724 finalizeBundle(MBB, Bundler.begin(), Bundler.end());
1725 }
1726
1727 // Restore all FP registers via normal registers
1728 for (const auto &Regs : ClearedFPRegs) {
1729 unsigned Reg, SaveReg1, SaveReg2;
1730 std::tie(Reg, SaveReg1, SaveReg2) = Regs;
1731 if (ARM::DPR_VFP2RegClass.contains(Reg))
1732 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVDRR), Reg)
1733 .addReg(SaveReg1)
1734 .addReg(SaveReg2)
1735 .add(predOps(ARMCC::AL));
1736 else if (ARM::SPRRegClass.contains(Reg))
1737 BuildMI(MBB, MBBI, DL, TII->get(ARM::VMOVSR), Reg)
1738 .addReg(SaveReg1)
1739 .add(predOps(ARMCC::AL));
1740 }
1741
1742 // Pop the stack space
1743 BuildMI(MBB, MBBI, DL, TII->get(ARM::tADDspi), ARM::SP)
1744 .addReg(ARM::SP)
1745 .addImm(CMSE_FP_SAVE_SIZE >> 2)
1746 .add(predOps(ARMCC::AL));
1747}
1748
1749static bool definesOrUsesFPReg(const MachineInstr &MI) {
1750 for (const MachineOperand &Op : MI.operands()) {
1751 if (!Op.isReg())
1752 continue;
1753 Register Reg = Op.getReg();
1754 if ((Reg >= ARM::Q0 && Reg <= ARM::Q7) ||
1755 (Reg >= ARM::D0 && Reg <= ARM::D15) ||
1756 (Reg >= ARM::S0 && Reg <= ARM::S31))
1757 return true;
1758 }
1759 return false;
1760}
1761
1762void ARMExpandPseudo::CMSERestoreFPRegsV81(
1763 MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, DebugLoc &DL,
1764 SmallVectorImpl<unsigned> &AvailableRegs) {
1765 if (!definesOrUsesFPReg(*MBBI)) {
1766 if (STI->fixCMSE_CVE_2021_35465()) {
1767 BuildMI(MBB, MBBI, DL, TII->get(ARM::VSCCLRMS))
1768 .add(predOps(ARMCC::AL))
1769 .addReg(ARM::VPR, RegState::Define);
1770 }
1771
1772 // Load FP registers from stack.
1773 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLLDM))
1774 .addReg(ARM::SP)
1775 .add(predOps(ARMCC::AL))
1776 .addImm(0); // Represents a pseoudo register list, has no effect on the
1777 // encoding.
1778
1779 // Pop the stack space
1780 BuildMI(MBB, MBBI, DL, TII->get(ARM::tADDspi), ARM::SP)
1781 .addReg(ARM::SP)
1782 .addImm(CMSE_FP_SAVE_SIZE >> 2)
1783 .add(predOps(ARMCC::AL));
1784 } else {
1785 // Restore the floating point context.
1786 BuildMI(MBB, MBBI, MBBI->getDebugLoc(), TII->get(ARM::VLDR_FPCXTS_post),
1787 ARM::SP)
1788 .addReg(ARM::SP)
1789 .addImm(8)
1790 .add(predOps(ARMCC::AL));
1791
1792 // Pop all the callee-saved registers (s16-s31).
1793 MachineInstrBuilder VPOP =
1794 BuildMI(MBB, MBBI, DL, TII->get(ARM::VLDMSIA_UPD), ARM::SP)
1795 .addReg(ARM::SP)
1796 .add(predOps(ARMCC::AL));
1797 for (int Reg = ARM::S16; Reg <= ARM::S31; ++Reg)
1798 VPOP.addReg(Reg, RegState::Define);
1799 }
1800}
1801
1802/// Expand a CMP_SWAP pseudo-inst to an ldrex/strex loop as simply as
1803/// possible. This only gets used at -O0 so we don't care about efficiency of
1804/// the generated code.
1805bool ARMExpandPseudo::ExpandCMP_SWAP(MachineBasicBlock &MBB,
1806 MachineBasicBlock::iterator MBBI,
1807 unsigned LdrexOp, unsigned StrexOp,
1808 unsigned UxtOp,
1809 MachineBasicBlock::iterator &NextMBBI) {
1810 bool IsThumb = STI->isThumb();
1811 bool IsThumb1Only = STI->isThumb1Only();
1812 MachineInstr &MI = *MBBI;
1813 DebugLoc DL = MI.getDebugLoc();
1814 const MachineOperand &Dest = MI.getOperand(0);
1815 Register TempReg = MI.getOperand(1).getReg();
1816 // Duplicating undef operands into 2 instructions does not guarantee the same
1817 // value on both; However undef should be replaced by xzr anyway.
1818 assert(!MI.getOperand(2).isUndef() && "cannot handle undef");
1819 Register AddrReg = MI.getOperand(2).getReg();
1820 Register DesiredReg = MI.getOperand(3).getReg();
1821 Register NewReg = MI.getOperand(4).getReg();
1822
1823 if (IsThumb) {
1824 assert(STI->hasV8MBaselineOps() &&
1825 "CMP_SWAP not expected to be custom expanded for Thumb1");
1826 assert((UxtOp == 0 || UxtOp == ARM::tUXTB || UxtOp == ARM::tUXTH) &&
1827 "ARMv8-M.baseline does not have t2UXTB/t2UXTH");
1828 assert((UxtOp == 0 || ARM::tGPRRegClass.contains(DesiredReg)) &&
1829 "DesiredReg used for UXT op must be tGPR");
1830 }
1831
1832 MachineFunction *MF = MBB.getParent();
1833 auto LoadCmpBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1834 auto StoreBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1835 auto DoneBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1836
1837 MF->insert(++MBB.getIterator(), LoadCmpBB);
1838 MF->insert(++LoadCmpBB->getIterator(), StoreBB);
1839 MF->insert(++StoreBB->getIterator(), DoneBB);
1840
1841 if (UxtOp) {
1842 MachineInstrBuilder MIB =
1843 BuildMI(MBB, MBBI, DL, TII->get(UxtOp), DesiredReg)
1844 .addReg(DesiredReg, RegState::Kill);
1845 if (!IsThumb)
1846 MIB.addImm(0);
1847 MIB.add(predOps(ARMCC::AL));
1848 }
1849
1850 // .Lloadcmp:
1851 // ldrex rDest, [rAddr]
1852 // cmp rDest, rDesired
1853 // bne .Ldone
1854
1855 MachineInstrBuilder MIB;
1856 MIB = BuildMI(LoadCmpBB, DL, TII->get(LdrexOp), Dest.getReg());
1857 MIB.addReg(AddrReg);
1858 if (LdrexOp == ARM::t2LDREX)
1859 MIB.addImm(0); // a 32-bit Thumb ldrex (only) allows an offset.
1860 MIB.add(predOps(ARMCC::AL));
1861
1862 unsigned CMPrr = IsThumb ? ARM::tCMPhir : ARM::CMPrr;
1863 BuildMI(LoadCmpBB, DL, TII->get(CMPrr))
1864 .addReg(Dest.getReg(), getKillRegState(Dest.isDead()))
1865 .addReg(DesiredReg)
1866 .add(predOps(ARMCC::AL));
1867 unsigned Bcc = IsThumb ? ARM::tBcc : ARM::Bcc;
1868 BuildMI(LoadCmpBB, DL, TII->get(Bcc))
1869 .addMBB(DoneBB)
1870 .addImm(ARMCC::NE)
1871 .addReg(ARM::CPSR, RegState::Kill);
1872 LoadCmpBB->addSuccessor(DoneBB);
1873 LoadCmpBB->addSuccessor(StoreBB);
1874
1875 // .Lstore:
1876 // strex rTempReg, rNew, [rAddr]
1877 // cmp rTempReg, #0
1878 // bne .Lloadcmp
1879 MIB = BuildMI(StoreBB, DL, TII->get(StrexOp), TempReg)
1880 .addReg(NewReg)
1881 .addReg(AddrReg);
1882 if (StrexOp == ARM::t2STREX)
1883 MIB.addImm(0); // a 32-bit Thumb strex (only) allows an offset.
1884 MIB.add(predOps(ARMCC::AL));
1885
1886 unsigned CMPri =
1887 IsThumb ? (IsThumb1Only ? ARM::tCMPi8 : ARM::t2CMPri) : ARM::CMPri;
1888 BuildMI(StoreBB, DL, TII->get(CMPri))
1889 .addReg(TempReg, RegState::Kill)
1890 .addImm(0)
1891 .add(predOps(ARMCC::AL));
1892 BuildMI(StoreBB, DL, TII->get(Bcc))
1893 .addMBB(LoadCmpBB)
1894 .addImm(ARMCC::NE)
1895 .addReg(ARM::CPSR, RegState::Kill);
1896 StoreBB->addSuccessor(LoadCmpBB);
1897 StoreBB->addSuccessor(DoneBB);
1898
1899 DoneBB->splice(DoneBB->end(), &MBB, MI, MBB.end());
1900 DoneBB->transferSuccessors(&MBB);
1901
1902 MBB.addSuccessor(LoadCmpBB);
1903
1904 NextMBBI = MBB.end();
1905 MI.eraseFromParent();
1906
1907 // Recompute livein lists.
1908 LivePhysRegs LiveRegs;
1909 computeAndAddLiveIns(LiveRegs, *DoneBB);
1910 computeAndAddLiveIns(LiveRegs, *StoreBB);
1911 computeAndAddLiveIns(LiveRegs, *LoadCmpBB);
1912 // Do an extra pass around the loop to get loop carried registers right.
1913 StoreBB->clearLiveIns();
1914 computeAndAddLiveIns(LiveRegs, *StoreBB);
1915 LoadCmpBB->clearLiveIns();
1916 computeAndAddLiveIns(LiveRegs, *LoadCmpBB);
1917
1918 return true;
1919}
1920
1921/// ARM's ldrexd/strexd take a consecutive register pair (represented as a
1922/// single GPRPair register), Thumb's take two separate registers so we need to
1923/// extract the subregs from the pair.
1924static void addExclusiveRegPair(MachineInstrBuilder &MIB, MachineOperand &Reg,
1925 unsigned Flags, bool IsThumb,
1926 const TargetRegisterInfo *TRI) {
1927 if (IsThumb) {
1928 Register RegLo = TRI->getSubReg(Reg.getReg(), ARM::gsub_0);
1929 Register RegHi = TRI->getSubReg(Reg.getReg(), ARM::gsub_1);
1930 MIB.addReg(RegLo, Flags);
1931 MIB.addReg(RegHi, Flags);
1932 } else
1933 MIB.addReg(Reg.getReg(), Flags);
1934}
1935
1936/// Expand a 64-bit CMP_SWAP to an ldrexd/strexd loop.
1937bool ARMExpandPseudo::ExpandCMP_SWAP_64(MachineBasicBlock &MBB,
1938 MachineBasicBlock::iterator MBBI,
1939 MachineBasicBlock::iterator &NextMBBI) {
1940 bool IsThumb = STI->isThumb();
1941 assert(!STI->isThumb1Only() && "CMP_SWAP_64 unsupported under Thumb1!");
1942 MachineInstr &MI = *MBBI;
1943 DebugLoc DL = MI.getDebugLoc();
1944 MachineOperand &Dest = MI.getOperand(0);
1945 Register TempReg = MI.getOperand(1).getReg();
1946 // Duplicating undef operands into 2 instructions does not guarantee the same
1947 // value on both; However undef should be replaced by xzr anyway.
1948 assert(!MI.getOperand(2).isUndef() && "cannot handle undef");
1949 Register AddrReg = MI.getOperand(2).getReg();
1950 Register DesiredReg = MI.getOperand(3).getReg();
1951 MachineOperand New = MI.getOperand(4);
1952 New.setIsKill(false);
1953
1954 Register DestLo = TRI->getSubReg(Dest.getReg(), ARM::gsub_0);
1955 Register DestHi = TRI->getSubReg(Dest.getReg(), ARM::gsub_1);
1956 Register DesiredLo = TRI->getSubReg(DesiredReg, ARM::gsub_0);
1957 Register DesiredHi = TRI->getSubReg(DesiredReg, ARM::gsub_1);
1958
1959 MachineFunction *MF = MBB.getParent();
1960 auto LoadCmpBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1961 auto StoreBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1962 auto DoneBB = MF->CreateMachineBasicBlock(MBB.getBasicBlock());
1963
1964 MF->insert(++MBB.getIterator(), LoadCmpBB);
1965 MF->insert(++LoadCmpBB->getIterator(), StoreBB);
1966 MF->insert(++StoreBB->getIterator(), DoneBB);
1967
1968 // .Lloadcmp:
1969 // ldrexd rDestLo, rDestHi, [rAddr]
1970 // cmp rDestLo, rDesiredLo
1971 // sbcs dead rTempReg, rDestHi, rDesiredHi
1972 // bne .Ldone
1973 unsigned LDREXD = IsThumb ? ARM::t2LDREXD : ARM::LDREXD;
1974 MachineInstrBuilder MIB;
1975 MIB = BuildMI(LoadCmpBB, DL, TII->get(LDREXD));
1976 addExclusiveRegPair(MIB, Dest, RegState::Define, IsThumb, TRI);
1977 MIB.addReg(AddrReg).add(predOps(ARMCC::AL));
1978
1979 unsigned CMPrr = IsThumb ? ARM::tCMPhir : ARM::CMPrr;
1980 BuildMI(LoadCmpBB, DL, TII->get(CMPrr))
1981 .addReg(DestLo, getKillRegState(Dest.isDead()))
1982 .addReg(DesiredLo)
1983 .add(predOps(ARMCC::AL));
1984
1985 BuildMI(LoadCmpBB, DL, TII->get(CMPrr))
1986 .addReg(DestHi, getKillRegState(Dest.isDead()))
1987 .addReg(DesiredHi)
1988 .addImm(ARMCC::EQ).addReg(ARM::CPSR, RegState::Kill);
1989
1990 unsigned Bcc = IsThumb ? ARM::tBcc : ARM::Bcc;
1991 BuildMI(LoadCmpBB, DL, TII->get(Bcc))
1992 .addMBB(DoneBB)
1993 .addImm(ARMCC::NE)
1994 .addReg(ARM::CPSR, RegState::Kill);
1995 LoadCmpBB->addSuccessor(DoneBB);
1996 LoadCmpBB->addSuccessor(StoreBB);
1997
1998 // .Lstore:
1999 // strexd rTempReg, rNewLo, rNewHi, [rAddr]
2000 // cmp rTempReg, #0
2001 // bne .Lloadcmp
2002 unsigned STREXD = IsThumb ? ARM::t2STREXD : ARM::STREXD;
2003 MIB = BuildMI(StoreBB, DL, TII->get(STREXD), TempReg);
2004 unsigned Flags = getKillRegState(New.isDead());
2005 addExclusiveRegPair(MIB, New, Flags, IsThumb, TRI);
2006 MIB.addReg(AddrReg).add(predOps(ARMCC::AL));
2007
2008 unsigned CMPri = IsThumb ? ARM::t2CMPri : ARM::CMPri;
2009 BuildMI(StoreBB, DL, TII->get(CMPri))
2010 .addReg(TempReg, RegState::Kill)
2011 .addImm(0)
2012 .add(predOps(ARMCC::AL));
2013 BuildMI(StoreBB, DL, TII->get(Bcc))
2014 .addMBB(LoadCmpBB)
2015 .addImm(ARMCC::NE)
2016 .addReg(ARM::CPSR, RegState::Kill);
2017 StoreBB->addSuccessor(LoadCmpBB);
2018 StoreBB->addSuccessor(DoneBB);
2019
2020 DoneBB->splice(DoneBB->end(), &MBB, MI, MBB.end());
2021 DoneBB->transferSuccessors(&MBB);
2022
2023 MBB.addSuccessor(LoadCmpBB);
2024
2025 NextMBBI = MBB.end();
2026 MI.eraseFromParent();
2027
2028 // Recompute livein lists.
2029 LivePhysRegs LiveRegs;
2030 computeAndAddLiveIns(LiveRegs, *DoneBB);
2031 computeAndAddLiveIns(LiveRegs, *StoreBB);
2032 computeAndAddLiveIns(LiveRegs, *LoadCmpBB);
2033 // Do an extra pass around the loop to get loop carried registers right.
2034 StoreBB->clearLiveIns();
2035 computeAndAddLiveIns(LiveRegs, *StoreBB);
2036 LoadCmpBB->clearLiveIns();
2037 computeAndAddLiveIns(LiveRegs, *LoadCmpBB);
2038
2039 return true;
2040}
2041
2042static void CMSEPushCalleeSaves(const TargetInstrInfo &TII,
2043 MachineBasicBlock &MBB,
2044 MachineBasicBlock::iterator MBBI, int JumpReg,
2045 const LivePhysRegs &LiveRegs, bool Thumb1Only) {
2046 const DebugLoc &DL = MBBI->getDebugLoc();
2047 if (Thumb1Only) { // push Lo and Hi regs separately
2048 MachineInstrBuilder PushMIB =
2049 BuildMI(MBB, MBBI, DL, TII.get(ARM::tPUSH)).add(predOps(ARMCC::AL));
2050 for (int Reg = ARM::R4; Reg < ARM::R8; ++Reg) {
2051 PushMIB.addReg(
2052 Reg, Reg == JumpReg || LiveRegs.contains(Reg) ? 0 : RegState::Undef);
2053 }
2054
2055 // Thumb1 can only tPUSH low regs, so we copy the high regs to the low
2056 // regs that we just saved and push the low regs again, taking care to
2057 // not clobber JumpReg. If JumpReg is one of the low registers, push first
2058 // the values of r9-r11, and then r8. That would leave them ordered in
2059 // memory, and allow us to later pop them with a single instructions.
2060 // FIXME: Could also use any of r0-r3 that are free (including in the
2061 // first PUSH above).
2062 for (int LoReg = ARM::R7, HiReg = ARM::R11; LoReg >= ARM::R4; --LoReg) {
2063 if (JumpReg == LoReg)
2064 continue;
2065 BuildMI(MBB, MBBI, DL, TII.get(ARM::tMOVr), LoReg)
2066 .addReg(HiReg, LiveRegs.contains(HiReg) ? 0 : RegState::Undef)
2067 .add(predOps(ARMCC::AL));
2068 --HiReg;
2069 }
2070 MachineInstrBuilder PushMIB2 =
2071 BuildMI(MBB, MBBI, DL, TII.get(ARM::tPUSH)).add(predOps(ARMCC::AL));
2072 for (int Reg = ARM::R4; Reg < ARM::R8; ++Reg) {
2073 if (Reg == JumpReg)
2074 continue;
2075 PushMIB2.addReg(Reg, RegState::Kill);
2076 }
2077
2078 // If we couldn't use a low register for temporary storage (because it was
2079 // the JumpReg), use r4 or r5, whichever is not JumpReg. It has already been
2080 // saved.
2081 if (JumpReg >= ARM::R4 && JumpReg <= ARM::R7) {
2082 int LoReg = JumpReg == ARM::R4 ? ARM::R5 : ARM::R4;
2083 BuildMI(MBB, MBBI, DL, TII.get(ARM::tMOVr), LoReg)
2084 .addReg(ARM::R8, LiveRegs.contains(ARM::R8) ? 0 : RegState::Undef)
2085 .add(predOps(ARMCC::AL));
2086 BuildMI(MBB, MBBI, DL, TII.get(ARM::tPUSH))
2087 .add(predOps(ARMCC::AL))
2088 .addReg(LoReg, RegState::Kill);
2089 }
2090 } else { // push Lo and Hi registers with a single instruction
2091 MachineInstrBuilder PushMIB =
2092 BuildMI(MBB, MBBI, DL, TII.get(ARM::t2STMDB_UPD), ARM::SP)
2093 .addReg(ARM::SP)
2094 .add(predOps(ARMCC::AL));
2095 for (int Reg = ARM::R4; Reg < ARM::R12; ++Reg) {
2096 PushMIB.addReg(
2097 Reg, Reg == JumpReg || LiveRegs.contains(Reg) ? 0 : RegState::Undef);
2098 }
2099 }
2100}
2101
2102static void CMSEPopCalleeSaves(const TargetInstrInfo &TII,
2103 MachineBasicBlock &MBB,
2104 MachineBasicBlock::iterator MBBI, int JumpReg,
2105 bool Thumb1Only) {
2106 const DebugLoc &DL = MBBI->getDebugLoc();
2107 if (Thumb1Only) {
2108 MachineInstrBuilder PopMIB =
2109 BuildMI(MBB, MBBI, DL, TII.get(ARM::tPOP)).add(predOps(ARMCC::AL));
2110 for (int R = 0; R < 4; ++R) {
2111 PopMIB.addReg(ARM::R4 + R, RegState::Define);
2112 BuildMI(MBB, MBBI, DL, TII.get(ARM::tMOVr), ARM::R8 + R)
2113 .addReg(ARM::R4 + R, RegState::Kill)
2114 .add(predOps(ARMCC::AL));
2115 }
2116 MachineInstrBuilder PopMIB2 =
2117 BuildMI(MBB, MBBI, DL, TII.get(ARM::tPOP)).add(predOps(ARMCC::AL));
2118 for (int R = 0; R < 4; ++R)
2119 PopMIB2.addReg(ARM::R4 + R, RegState::Define);
2120 } else { // pop Lo and Hi registers with a single instruction
2121 MachineInstrBuilder PopMIB =
2122 BuildMI(MBB, MBBI, DL, TII.get(ARM::t2LDMIA_UPD), ARM::SP)
2123 .addReg(ARM::SP)
2124 .add(predOps(ARMCC::AL));
2125 for (int Reg = ARM::R4; Reg < ARM::R12; ++Reg)
2126 PopMIB.addReg(Reg, RegState::Define);
2127 }
2128}
2129
2130bool ARMExpandPseudo::ExpandMI(MachineBasicBlock &MBB,
2131 MachineBasicBlock::iterator MBBI,
2132 MachineBasicBlock::iterator &NextMBBI) {
2133 MachineInstr &MI = *MBBI;
2134 unsigned Opcode = MI.getOpcode();
2135 switch (Opcode) {
2136 default:
2137 return false;
2138
2139 case ARM::VBSPd:
2140 case ARM::VBSPq: {
2141 Register DstReg = MI.getOperand(0).getReg();
2142 if (DstReg == MI.getOperand(3).getReg()) {
2143 // Expand to VBIT
2144 unsigned NewOpc = Opcode == ARM::VBSPd ? ARM::VBITd : ARM::VBITq;
2145 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc))
2146 .add(MI.getOperand(0))
2147 .add(MI.getOperand(3))
2148 .add(MI.getOperand(2))
2149 .add(MI.getOperand(1))
2150 .addImm(MI.getOperand(4).getImm())
2151 .add(MI.getOperand(5));
2152 } else if (DstReg == MI.getOperand(2).getReg()) {
2153 // Expand to VBIF
2154 unsigned NewOpc = Opcode == ARM::VBSPd ? ARM::VBIFd : ARM::VBIFq;
2155 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc))
2156 .add(MI.getOperand(0))
2157 .add(MI.getOperand(2))
2158 .add(MI.getOperand(3))
2159 .add(MI.getOperand(1))
2160 .addImm(MI.getOperand(4).getImm())
2161 .add(MI.getOperand(5));
2162 } else {
2163 // Expand to VBSL
2164 unsigned NewOpc = Opcode == ARM::VBSPd ? ARM::VBSLd : ARM::VBSLq;
2165 if (DstReg == MI.getOperand(1).getReg()) {
2166 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc))
2167 .add(MI.getOperand(0))
2168 .add(MI.getOperand(1))
2169 .add(MI.getOperand(2))
2170 .add(MI.getOperand(3))
2171 .addImm(MI.getOperand(4).getImm())
2172 .add(MI.getOperand(5));
2173 } else {
2174 // Use move to satisfy constraints
2175 unsigned MoveOpc = Opcode == ARM::VBSPd ? ARM::VORRd : ARM::VORRq;
2176 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(MoveOpc))
2177 .addReg(DstReg,
2178 RegState::Define |
2179 getRenamableRegState(MI.getOperand(0).isRenamable()))
2180 .add(MI.getOperand(1))
2181 .add(MI.getOperand(1))
2182 .addImm(MI.getOperand(4).getImm())
2183 .add(MI.getOperand(5));
2184 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc))
2185 .add(MI.getOperand(0))
2186 .addReg(DstReg,
2187 RegState::Kill |
2188 getRenamableRegState(MI.getOperand(0).isRenamable()))
2189 .add(MI.getOperand(2))
2190 .add(MI.getOperand(3))
2191 .addImm(MI.getOperand(4).getImm())
2192 .add(MI.getOperand(5));
2193 }
2194 }
2195 MI.eraseFromParent();
2196 return true;
2197 }
2198
2199 case ARM::TCRETURNdi:
2200 case ARM::TCRETURNri:
2201 case ARM::TCRETURNrinotr12: {
2202 MachineBasicBlock::iterator MBBI = MBB.getLastNonDebugInstr();
2203 if (MBBI->getOpcode() == ARM::SEH_EpilogEnd)
2204 MBBI--;
2205 if (MBBI->getOpcode() == ARM::SEH_Nop_Ret)
2206 MBBI--;
2207 assert(MBBI->isReturn() &&
2208 "Can only insert epilog into returning blocks");
2209 unsigned RetOpcode = MBBI->getOpcode();
2210 DebugLoc dl = MBBI->getDebugLoc();
2211 const ARMBaseInstrInfo &TII = *static_cast<const ARMBaseInstrInfo *>(
2212 MBB.getParent()->getSubtarget().getInstrInfo());
2213
2214 // Tail call return: adjust the stack pointer and jump to callee.
2215 MBBI = MBB.getLastNonDebugInstr();
2216 if (MBBI->getOpcode() == ARM::SEH_EpilogEnd)
2217 MBBI--;
2218 if (MBBI->getOpcode() == ARM::SEH_Nop_Ret)
2219 MBBI--;
2220 MachineOperand &JumpTarget = MBBI->getOperand(0);
2221
2222 // Jump to label or value in register.
2223 if (RetOpcode == ARM::TCRETURNdi) {
2224 MachineFunction *MF = MBB.getParent();
2225 bool NeedsWinCFI = MF->getTarget().getMCAsmInfo()->usesWindowsCFI() &&
2226 MF->getFunction().needsUnwindTableEntry();
2227 unsigned TCOpcode =
2228 STI->isThumb()
2229 ? ((STI->isTargetMachO() || NeedsWinCFI) ? ARM::tTAILJMPd
2230 : ARM::tTAILJMPdND)
2231 : ARM::TAILJMPd;
2232 MachineInstrBuilder MIB = BuildMI(MBB, MBBI, dl, TII.get(TCOpcode));
2233 if (JumpTarget.isGlobal())
2234 MIB.addGlobalAddress(JumpTarget.getGlobal(), JumpTarget.getOffset(),
2235 JumpTarget.getTargetFlags());
2236 else {
2237 assert(JumpTarget.isSymbol());
2238 MIB.addExternalSymbol(JumpTarget.getSymbolName(),
2239 JumpTarget.getTargetFlags());
2240 }
2241
2242 // Add the default predicate in Thumb mode.
2243 if (STI->isThumb())
2244 MIB.add(predOps(ARMCC::AL));
2245 } else if (RetOpcode == ARM::TCRETURNri ||
2246 RetOpcode == ARM::TCRETURNrinotr12) {
2247 unsigned Opcode =
2248 STI->isThumb() ? ARM::tTAILJMPr
2249 : (STI->hasV4TOps() ? ARM::TAILJMPr : ARM::TAILJMPr4);
2250 BuildMI(MBB, MBBI, dl,
2251 TII.get(Opcode))
2252 .addReg(JumpTarget.getReg(), RegState::Kill);
2253 }
2254
2255 auto NewMI = std::prev(MBBI);
2256 for (unsigned i = 2, e = MBBI->getNumOperands(); i != e; ++i)
2257 NewMI->addOperand(MBBI->getOperand(i));
2258
2259
2260 // Update call site info and delete the pseudo instruction TCRETURN.
2261 if (MI.isCandidateForCallSiteEntry())
2262 MI.getMF()->moveCallSiteInfo(&MI, &*NewMI);
2263 // Copy nomerge flag over to new instruction.
2264 if (MI.getFlag(MachineInstr::NoMerge))
2265 NewMI->setFlag(MachineInstr::NoMerge);
2266 MBB.erase(MBBI);
2267
2268 MBBI = NewMI;
2269 return true;
2270 }
2271 case ARM::tBXNS_RET: {
2272 // For v8.0-M.Main we need to authenticate LR before clearing FPRs, which
2273 // uses R12 as a scratch register.
2274 if (!STI->hasV8_1MMainlineOps() && AFI->shouldSignReturnAddress())
2275 BuildMI(MBB, MBBI, DebugLoc(), TII->get(ARM::t2AUT));
2276
2277 MachineBasicBlock &AfterBB = CMSEClearFPRegs(MBB, MBBI);
2278
2279 if (STI->hasV8_1MMainlineOps()) {
2280 // Restore the non-secure floating point context.
2281 BuildMI(MBB, MBBI, MBBI->getDebugLoc(),
2282 TII->get(ARM::VLDR_FPCXTNS_post), ARM::SP)
2283 .addReg(ARM::SP)
2284 .addImm(4)
2285 .add(predOps(ARMCC::AL));
2286
2287 if (AFI->shouldSignReturnAddress())
2288 BuildMI(AfterBB, AfterBB.end(), DebugLoc(), TII->get(ARM::t2AUT));
2289 }
2290
2291 // Clear all GPR that are not a use of the return instruction.
2292 assert(llvm::all_of(MBBI->operands(), [](const MachineOperand &Op) {
2293 return !Op.isReg() || Op.getReg() != ARM::R12;
2294 }));
2295 SmallVector<unsigned, 5> ClearRegs;
2296 determineGPRegsToClear(
2297 *MBBI, {ARM::R0, ARM::R1, ARM::R2, ARM::R3, ARM::R12}, ClearRegs);
2298 CMSEClearGPRegs(AfterBB, AfterBB.end(), MBBI->getDebugLoc(), ClearRegs,
2299 ARM::LR);
2300
2301 MachineInstrBuilder NewMI =
2302 BuildMI(AfterBB, AfterBB.end(), MBBI->getDebugLoc(),
2303 TII->get(ARM::tBXNS))
2304 .addReg(ARM::LR)
2305 .add(predOps(ARMCC::AL));
2306 for (const MachineOperand &Op : MI.operands())
2307 NewMI->addOperand(Op);
2308 MI.eraseFromParent();
2309 return true;
2310 }
2311 case ARM::tBLXNS_CALL: {
2312 DebugLoc DL = MBBI->getDebugLoc();
2313 Register JumpReg = MBBI->getOperand(0).getReg();
2314
2315 // Figure out which registers are live at the point immediately before the
2316 // call. When we indiscriminately push a set of registers, the live
2317 // registers are added as ordinary use operands, whereas dead registers
2318 // are "undef".
2319 LivePhysRegs LiveRegs(*TRI);
2320 LiveRegs.addLiveOuts(MBB);
2321 for (const MachineInstr &MI : make_range(MBB.rbegin(), MBBI.getReverse()))
2322 LiveRegs.stepBackward(MI);
2323 LiveRegs.stepBackward(*MBBI);
2324
2325 CMSEPushCalleeSaves(*TII, MBB, MBBI, JumpReg, LiveRegs,
2326 AFI->isThumb1OnlyFunction());
2327
2328 SmallVector<unsigned, 16> ClearRegs;
2329 determineGPRegsToClear(*MBBI,
2330 {ARM::R0, ARM::R1, ARM::R2, ARM::R3, ARM::R4,
2331 ARM::R5, ARM::R6, ARM::R7, ARM::R8, ARM::R9,
2332 ARM::R10, ARM::R11, ARM::R12},
2333 ClearRegs);
2334 auto OriginalClearRegs = ClearRegs;
2335
2336 // Get the first cleared register as a scratch (to use later with tBIC).
2337 // We need to use the first so we can ensure it is a low register.
2338 unsigned ScratchReg = ClearRegs.front();
2339
2340 // Clear LSB of JumpReg
2341 if (AFI->isThumb2Function()) {
2342 BuildMI(MBB, MBBI, DL, TII->get(ARM::t2BICri), JumpReg)
2343 .addReg(JumpReg)
2344 .addImm(1)
2345 .add(predOps(ARMCC::AL))
2346 .add(condCodeOp());
2347 } else {
2348 // We need to use an extra register to cope with 8M Baseline,
2349 // since we have saved all of the registers we are ok to trash a non
2350 // argument register here.
2351 BuildMI(MBB, MBBI, DL, TII->get(ARM::tMOVi8), ScratchReg)
2352 .add(condCodeOp())
2353 .addImm(1)
2354 .add(predOps(ARMCC::AL));
2355 BuildMI(MBB, MBBI, DL, TII->get(ARM::tBIC), JumpReg)
2356 .addReg(ARM::CPSR, RegState::Define)
2357 .addReg(JumpReg)
2358 .addReg(ScratchReg)
2359 .add(predOps(ARMCC::AL));
2360 }
2361
2362 CMSESaveClearFPRegs(MBB, MBBI, DL, LiveRegs,
2363 ClearRegs); // save+clear FP regs with ClearRegs
2364 CMSEClearGPRegs(MBB, MBBI, DL, ClearRegs, JumpReg);
2365
2366 const MachineInstrBuilder NewCall =
2367 BuildMI(MBB, MBBI, DL, TII->get(ARM::tBLXNSr))
2368 .add(predOps(ARMCC::AL))
2369 .addReg(JumpReg, RegState::Kill);
2370
2371 for (const MachineOperand &MO : llvm::drop_begin(MI.operands()))
2372 NewCall->addOperand(MO);
2373 if (MI.isCandidateForCallSiteEntry())
2374 MI.getMF()->moveCallSiteInfo(&MI, NewCall.getInstr());
2375
2376 CMSERestoreFPRegs(MBB, MBBI, DL, OriginalClearRegs); // restore FP registers
2377
2378 CMSEPopCalleeSaves(*TII, MBB, MBBI, JumpReg, AFI->isThumb1OnlyFunction());
2379
2380 MI.eraseFromParent();
2381 return true;
2382 }
2383 case ARM::VMOVHcc:
2384 case ARM::VMOVScc:
2385 case ARM::VMOVDcc: {
2386 unsigned newOpc = Opcode != ARM::VMOVDcc ? ARM::VMOVS : ARM::VMOVD;
2387 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(newOpc),
2388 MI.getOperand(1).getReg())
2389 .add(MI.getOperand(2))
2390 .addImm(MI.getOperand(3).getImm()) // 'pred'
2391 .add(MI.getOperand(4))
2392 .add(makeImplicit(MI.getOperand(1)));
2393
2394 MI.eraseFromParent();
2395 return true;
2396 }
2397 case ARM::t2MOVCCr:
2398 case ARM::MOVCCr: {
2399 unsigned Opc = AFI->isThumbFunction() ? ARM::t2MOVr : ARM::MOVr;
2400 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc),
2401 MI.getOperand(1).getReg())
2402 .add(MI.getOperand(2))
2403 .addImm(MI.getOperand(3).getImm()) // 'pred'
2404 .add(MI.getOperand(4))
2405 .add(condCodeOp()) // 's' bit
2406 .add(makeImplicit(MI.getOperand(1)));
2407
2408 MI.eraseFromParent();
2409 return true;
2410 }
2411 case ARM::MOVCCsi: {
2412 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsi),
2413 (MI.getOperand(1).getReg()))
2414 .add(MI.getOperand(2))
2415 .addImm(MI.getOperand(3).getImm())
2416 .addImm(MI.getOperand(4).getImm()) // 'pred'
2417 .add(MI.getOperand(5))
2418 .add(condCodeOp()) // 's' bit
2419 .add(makeImplicit(MI.getOperand(1)));
2420
2421 MI.eraseFromParent();
2422 return true;
2423 }
2424 case ARM::MOVCCsr: {
2425 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsr),
2426 (MI.getOperand(1).getReg()))
2427 .add(MI.getOperand(2))
2428 .add(MI.getOperand(3))
2429 .addImm(MI.getOperand(4).getImm())
2430 .addImm(MI.getOperand(5).getImm()) // 'pred'
2431 .add(MI.getOperand(6))
2432 .add(condCodeOp()) // 's' bit
2433 .add(makeImplicit(MI.getOperand(1)));
2434
2435 MI.eraseFromParent();
2436 return true;
2437 }
2438 case ARM::t2MOVCCi16:
2439 case ARM::MOVCCi16: {
2440 unsigned NewOpc = AFI->isThumbFunction() ? ARM::t2MOVi16 : ARM::MOVi16;
2441 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc),
2442 MI.getOperand(1).getReg())
2443 .addImm(MI.getOperand(2).getImm())
2444 .addImm(MI.getOperand(3).getImm()) // 'pred'
2445 .add(MI.getOperand(4))
2446 .add(makeImplicit(MI.getOperand(1)));
2447 MI.eraseFromParent();
2448 return true;
2449 }
2450 case ARM::t2MOVCCi:
2451 case ARM::MOVCCi: {
2452 unsigned Opc = AFI->isThumbFunction() ? ARM::t2MOVi : ARM::MOVi;
2453 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc),
2454 MI.getOperand(1).getReg())
2455 .addImm(MI.getOperand(2).getImm())
2456 .addImm(MI.getOperand(3).getImm()) // 'pred'
2457 .add(MI.getOperand(4))
2458 .add(condCodeOp()) // 's' bit
2459 .add(makeImplicit(MI.getOperand(1)));
2460
2461 MI.eraseFromParent();
2462 return true;
2463 }
2464 case ARM::t2MVNCCi:
2465 case ARM::MVNCCi: {
2466 unsigned Opc = AFI->isThumbFunction() ? ARM::t2MVNi : ARM::MVNi;
2467 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc),
2468 MI.getOperand(1).getReg())
2469 .addImm(MI.getOperand(2).getImm())
2470 .addImm(MI.getOperand(3).getImm()) // 'pred'
2471 .add(MI.getOperand(4))
2472 .add(condCodeOp()) // 's' bit
2473 .add(makeImplicit(MI.getOperand(1)));
2474
2475 MI.eraseFromParent();
2476 return true;
2477 }
2478 case ARM::t2MOVCClsl:
2479 case ARM::t2MOVCClsr:
2480 case ARM::t2MOVCCasr:
2481 case ARM::t2MOVCCror: {
2482 unsigned NewOpc;
2483 switch (Opcode) {
2484 case ARM::t2MOVCClsl: NewOpc = ARM::t2LSLri; break;
2485 case ARM::t2MOVCClsr: NewOpc = ARM::t2LSRri; break;
2486 case ARM::t2MOVCCasr: NewOpc = ARM::t2ASRri; break;
2487 case ARM::t2MOVCCror: NewOpc = ARM::t2RORri; break;
2488 default: llvm_unreachable("unexpeced conditional move");
2489 }
2490 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc),
2491 MI.getOperand(1).getReg())
2492 .add(MI.getOperand(2))
2493 .addImm(MI.getOperand(3).getImm())
2494 .addImm(MI.getOperand(4).getImm()) // 'pred'
2495 .add(MI.getOperand(5))
2496 .add(condCodeOp()) // 's' bit
2497 .add(makeImplicit(MI.getOperand(1)));
2498 MI.eraseFromParent();
2499 return true;
2500 }
2501 case ARM::Int_eh_sjlj_dispatchsetup: {
2502 MachineFunction &MF = *MI.getParent()->getParent();
2503 const ARMBaseInstrInfo *AII =
2504 static_cast<const ARMBaseInstrInfo*>(TII);
2505 const ARMBaseRegisterInfo &RI = AII->getRegisterInfo();
2506 // For functions using a base pointer, we rematerialize it (via the frame
2507 // pointer) here since eh.sjlj.setjmp and eh.sjlj.longjmp don't do it
2508 // for us. Otherwise, expand to nothing.
2509 if (RI.hasBasePointer(MF)) {
2510 int32_t NumBytes = AFI->getFramePtrSpillOffset();
2511 Register FramePtr = RI.getFrameRegister(MF);
2512 assert(MF.getSubtarget().getFrameLowering()->hasFP(MF) &&
2513 "base pointer without frame pointer?");
2514
2515 if (AFI->isThumb2Function()) {
2516 emitT2RegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
2517 FramePtr, -NumBytes, ARMCC::AL, 0, *TII);
2518 } else if (AFI->isThumbFunction()) {
2519 emitThumbRegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
2520 FramePtr, -NumBytes, *TII, RI);
2521 } else {
2522 emitARMRegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
2523 FramePtr, -NumBytes, ARMCC::AL, 0,
2524 *TII);
2525 }
2526 // If there's dynamic realignment, adjust for it.
2527 if (RI.hasStackRealignment(MF)) {
2528 MachineFrameInfo &MFI = MF.getFrameInfo();
2529 Align MaxAlign = MFI.getMaxAlign();
2530 assert (!AFI->isThumb1OnlyFunction());
2531 // Emit bic r6, r6, MaxAlign
2532 assert(MaxAlign <= Align(256) &&
2533 "The BIC instruction cannot encode "
2534 "immediates larger than 256 with all lower "
2535 "bits set.");
2536 unsigned bicOpc = AFI->isThumbFunction() ?
2537 ARM::t2BICri : ARM::BICri;
2538 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(bicOpc), ARM::R6)
2539 .addReg(ARM::R6, RegState::Kill)
2540 .addImm(MaxAlign.value() - 1)
2541 .add(predOps(ARMCC::AL))
2542 .add(condCodeOp());
2543 }
2544 }
2545 MI.eraseFromParent();
2546 return true;
2547 }
2548
2549 case ARM::MOVsrl_glue:
2550 case ARM::MOVsra_glue: {
2551 // These are just fancy MOVs instructions.
2552 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsi),
2553 MI.getOperand(0).getReg())
2554 .add(MI.getOperand(1))
2555 .addImm(ARM_AM::getSORegOpc(
2556 (Opcode == ARM::MOVsrl_glue ? ARM_AM::lsr : ARM_AM::asr), 1))
2557 .add(predOps(ARMCC::AL))
2558 .addReg(ARM::CPSR, RegState::Define);
2559 MI.eraseFromParent();
2560 return true;
2561 }
2562 case ARM::RRX: {
2563 // This encodes as "MOVs Rd, Rm, rrx
2564 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsi),
2565 MI.getOperand(0).getReg())
2566 .add(MI.getOperand(1))
2567 .addImm(ARM_AM::getSORegOpc(ARM_AM::rrx, 0))
2568 .add(predOps(ARMCC::AL))
2569 .add(condCodeOp())
2570 .copyImplicitOps(MI);
2571 MI.eraseFromParent();
2572 return true;
2573 }
2574 case ARM::tTPsoft:
2575 case ARM::TPsoft: {
2576 const bool Thumb = Opcode == ARM::tTPsoft;
2577
2578 MachineInstrBuilder MIB;
2579 MachineFunction *MF = MBB.getParent();
2580 if (STI->genLongCalls()) {
2581 MachineConstantPool *MCP = MF->getConstantPool();
2582 unsigned PCLabelID = AFI->createPICLabelUId();
2583 MachineConstantPoolValue *CPV =
2584 ARMConstantPoolSymbol::Create(MF->getFunction().getContext(),
2585 "__aeabi_read_tp", PCLabelID, 0);
2586 Register Reg = MI.getOperand(0).getReg();
2587 MIB =
2588 BuildMI(MBB, MBBI, MI.getDebugLoc(),
2589 TII->get(Thumb ? ARM::tLDRpci : ARM::LDRi12), Reg)
2590 .addConstantPoolIndex(MCP->getConstantPoolIndex(CPV, Align(4)));
2591 if (!Thumb)
2592 MIB.addImm(0);
2593 MIB.add(predOps(ARMCC::AL));
2594
2595 MIB =
2596 BuildMI(MBB, MBBI, MI.getDebugLoc(),
2597 TII->get(Thumb ? gettBLXrOpcode(*MF) : getBLXOpcode(*MF)));
2598 if (Thumb)
2599 MIB.add(predOps(ARMCC::AL));
2600 MIB.addReg(Reg, RegState::Kill);
2601 } else {
2602 MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
2603 TII->get(Thumb ? ARM::tBL : ARM::BL));
2604 if (Thumb)
2605 MIB.add(predOps(ARMCC::AL));
2606 MIB.addExternalSymbol("__aeabi_read_tp", 0);
2607 }
2608
2609 MIB.cloneMemRefs(MI);
2610 MIB.copyImplicitOps(MI);
2611 // Update the call site info.
2612 if (MI.isCandidateForCallSiteEntry())
2613 MF->moveCallSiteInfo(&MI, &*MIB);
2614 MI.eraseFromParent();
2615 return true;
2616 }
2617 case ARM::tLDRpci_pic:
2618 case ARM::t2LDRpci_pic: {
2619 unsigned NewLdOpc = (Opcode == ARM::tLDRpci_pic)
2620 ? ARM::tLDRpci : ARM::t2LDRpci;
2621 Register DstReg = MI.getOperand(0).getReg();
2622 bool DstIsDead = MI.getOperand(0).isDead();
2623 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewLdOpc), DstReg)
2624 .add(MI.getOperand(1))
2625 .add(predOps(ARMCC::AL))
2626 .cloneMemRefs(MI)
2627 .copyImplicitOps(MI);
2628 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::tPICADD))
2629 .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
2630 .addReg(DstReg)
2631 .add(MI.getOperand(2))
2632 .copyImplicitOps(MI);
2633 MI.eraseFromParent();
2634 return true;
2635 }
2636
2637 case ARM::LDRLIT_ga_abs:
2638 case ARM::LDRLIT_ga_pcrel:
2639 case ARM::LDRLIT_ga_pcrel_ldr:
2640 case ARM::tLDRLIT_ga_abs:
2641 case ARM::t2LDRLIT_ga_pcrel:
2642 case ARM::tLDRLIT_ga_pcrel: {
2643 Register DstReg = MI.getOperand(0).getReg();
2644 bool DstIsDead = MI.getOperand(0).isDead();
2645 const MachineOperand &MO1 = MI.getOperand(1);
2646 auto Flags = MO1.getTargetFlags();
2647 const GlobalValue *GV = MO1.getGlobal();
2648 bool IsARM = Opcode != ARM::tLDRLIT_ga_pcrel &&
2649 Opcode != ARM::tLDRLIT_ga_abs &&
2650 Opcode != ARM::t2LDRLIT_ga_pcrel;
2651 bool IsPIC =
2652 Opcode != ARM::LDRLIT_ga_abs && Opcode != ARM::tLDRLIT_ga_abs;
2653 unsigned LDRLITOpc = IsARM ? ARM::LDRi12 : ARM::tLDRpci;
2654 if (Opcode == ARM::t2LDRLIT_ga_pcrel)
2655 LDRLITOpc = ARM::t2LDRpci;
2656 unsigned PICAddOpc =
2657 IsARM
2658 ? (Opcode == ARM::LDRLIT_ga_pcrel_ldr ? ARM::PICLDR : ARM::PICADD)
2659 : ARM::tPICADD;
2660
2661 // We need a new const-pool entry to load from.
2662 MachineConstantPool *MCP = MBB.getParent()->getConstantPool();
2663 unsigned ARMPCLabelIndex = 0;
2664 MachineConstantPoolValue *CPV;
2665
2666 if (IsPIC) {
2667 unsigned PCAdj = IsARM ? 8 : 4;
2668 auto Modifier = (Flags & ARMII::MO_GOT)
2669 ? ARMCP::GOT_PREL
2670 : ARMCP::no_modifier;
2671 ARMPCLabelIndex = AFI->createPICLabelUId();
2672 CPV = ARMConstantPoolConstant::Create(
2673 GV, ARMPCLabelIndex, ARMCP::CPValue, PCAdj, Modifier,
2674 /*AddCurrentAddr*/ Modifier == ARMCP::GOT_PREL);
2675 } else
2676 CPV = ARMConstantPoolConstant::Create(GV, ARMCP::no_modifier);
2677
2678 MachineInstrBuilder MIB =
2679 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(LDRLITOpc), DstReg)
2680 .addConstantPoolIndex(MCP->getConstantPoolIndex(CPV, Align(4)));
2681 if (IsARM)
2682 MIB.addImm(0);
2683 MIB.add(predOps(ARMCC::AL));
2684
2685 if (IsPIC) {
2686 MachineInstrBuilder MIB =
2687 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(PICAddOpc))
2688 .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
2689 .addReg(DstReg)
2690 .addImm(ARMPCLabelIndex);
2691
2692 if (IsARM)
2693 MIB.add(predOps(ARMCC::AL));
2694 }
2695
2696 MI.eraseFromParent();
2697 return true;
2698 }
2699 case ARM::MOV_ga_pcrel:
2700 case ARM::MOV_ga_pcrel_ldr:
2701 case ARM::t2MOV_ga_pcrel: {
2702 // Expand into movw + movw. Also "add pc" / ldr [pc] in PIC mode.
2703 unsigned LabelId = AFI->createPICLabelUId();
2704 Register DstReg = MI.getOperand(0).getReg();
2705 bool DstIsDead = MI.getOperand(0).isDead();
2706 const MachineOperand &MO1 = MI.getOperand(1);
2707 const GlobalValue *GV = MO1.getGlobal();
2708 unsigned TF = MO1.getTargetFlags();
2709 bool isARM = Opcode != ARM::t2MOV_ga_pcrel;
2710 unsigned LO16Opc = isARM ? ARM::MOVi16_ga_pcrel : ARM::t2MOVi16_ga_pcrel;
2711 unsigned HI16Opc = isARM ? ARM::MOVTi16_ga_pcrel :ARM::t2MOVTi16_ga_pcrel;
2712 unsigned LO16TF = TF | ARMII::MO_LO16;
2713 unsigned HI16TF = TF | ARMII::MO_HI16;
2714 unsigned PICAddOpc = isARM
2715 ? (Opcode == ARM::MOV_ga_pcrel_ldr ? ARM::PICLDR : ARM::PICADD)
2716 : ARM::tPICADD;
2717 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(LO16Opc), DstReg)
2718 .addGlobalAddress(GV, MO1.getOffset(), TF | LO16TF)
2719 .addImm(LabelId)
2720 .copyImplicitOps(MI);
2721
2722 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(HI16Opc), DstReg)
2723 .addReg(DstReg)
2724 .addGlobalAddress(GV, MO1.getOffset(), TF | HI16TF)
2725 .addImm(LabelId)
2726 .copyImplicitOps(MI);
2727
2728 MachineInstrBuilder MIB3 = BuildMI(MBB, MBBI, MI.getDebugLoc(),
2729 TII->get(PICAddOpc))
2730 .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
2731 .addReg(DstReg).addImm(LabelId);
2732 if (isARM) {
2733 MIB3.add(predOps(ARMCC::AL));
2734 if (Opcode == ARM::MOV_ga_pcrel_ldr)
2735 MIB3.cloneMemRefs(MI);
2736 }
2737 MIB3.copyImplicitOps(MI);
2738 MI.eraseFromParent();
2739 return true;
2740 }
2741
2742 case ARM::MOVi32imm:
2743 case ARM::MOVCCi32imm:
2744 case ARM::t2MOVi32imm:
2745 case ARM::t2MOVCCi32imm:
2746 ExpandMOV32BitImm(MBB, MBBI);
2747 return true;
2748
2749 case ARM::tMOVi32imm:
2750 ExpandTMOV32BitImm(MBB, MBBI);
2751 return true;
2752
2753 case ARM::tLEApcrelJT:
2754 // Inline jump tables are handled in ARMAsmPrinter.
2755 if (MI.getMF()->getJumpTableInfo()->getEntryKind() ==
2756 MachineJumpTableInfo::EK_Inline)
2757 return false;
2758
2759 // Use a 32-bit immediate move to generate the address of the jump table.
2760 assert(STI->isThumb() && "Non-inline jump tables expected only in thumb");
2761 ExpandTMOV32BitImm(MBB, MBBI);
2762 return true;
2763
2764 case ARM::SUBS_PC_LR: {
2765 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::SUBri), ARM::PC)
2766 .addReg(ARM::LR)
2767 .add(MI.getOperand(0))
2768 .add(MI.getOperand(1))
2769 .add(MI.getOperand(2))
2770 .addReg(ARM::CPSR, RegState::Undef)
2771 .copyImplicitOps(MI);
2772 MI.eraseFromParent();
2773 return true;
2774 }
2775 case ARM::VLDMQIA: {
2776 unsigned NewOpc = ARM::VLDMDIA;
2777 MachineInstrBuilder MIB =
2778 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
2779 unsigned OpIdx = 0;
2780
2781 // Grab the Q register destination.
2782 bool DstIsDead = MI.getOperand(OpIdx).isDead();
2783 Register DstReg = MI.getOperand(OpIdx++).getReg();
2784
2785 // Copy the source register.
2786 MIB.add(MI.getOperand(OpIdx++));
2787
2788 // Copy the predicate operands.
2789 MIB.add(MI.getOperand(OpIdx++));
2790 MIB.add(MI.getOperand(OpIdx++));
2791
2792 // Add the destination operands (D subregs).
2793 Register D0 = TRI->getSubReg(DstReg, ARM::dsub_0);
2794 Register D1 = TRI->getSubReg(DstReg, ARM::dsub_1);
2795 MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead))
2796 .addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
2797
2798 // Add an implicit def for the super-register.
2799 MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
2800 MIB.copyImplicitOps(MI);
2801 MIB.cloneMemRefs(MI);
2802 MI.eraseFromParent();
2803 return true;
2804 }
2805
2806 case ARM::VSTMQIA: {
2807 unsigned NewOpc = ARM::VSTMDIA;
2808 MachineInstrBuilder MIB =
2809 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
2810 unsigned OpIdx = 0;
2811
2812 // Grab the Q register source.
2813 bool SrcIsKill = MI.getOperand(OpIdx).isKill();
2814 Register SrcReg = MI.getOperand(OpIdx++).getReg();
2815
2816 // Copy the destination register.
2817 MachineOperand Dst(MI.getOperand(OpIdx++));
2818 MIB.add(Dst);
2819
2820 // Copy the predicate operands.
2821 MIB.add(MI.getOperand(OpIdx++));
2822 MIB.add(MI.getOperand(OpIdx++));
2823
2824 // Add the source operands (D subregs).
2825 Register D0 = TRI->getSubReg(SrcReg, ARM::dsub_0);
2826 Register D1 = TRI->getSubReg(SrcReg, ARM::dsub_1);
2827 MIB.addReg(D0, SrcIsKill ? RegState::Kill : 0)
2828 .addReg(D1, SrcIsKill ? RegState::Kill : 0);
2829
2830 if (SrcIsKill) // Add an implicit kill for the Q register.
2831 MIB->addRegisterKilled(SrcReg, TRI, true);
2832
2833 MIB.copyImplicitOps(MI);
2834 MIB.cloneMemRefs(MI);
2835 MI.eraseFromParent();
2836 return true;
2837 }
2838
2839 case ARM::VLD2q8Pseudo:
2840 case ARM::VLD2q16Pseudo:
2841 case ARM::VLD2q32Pseudo:
2842 case ARM::VLD2q8PseudoWB_fixed:
2843 case ARM::VLD2q16PseudoWB_fixed:
2844 case ARM::VLD2q32PseudoWB_fixed:
2845 case ARM::VLD2q8PseudoWB_register:
2846 case ARM::VLD2q16PseudoWB_register:
2847 case ARM::VLD2q32PseudoWB_register:
2848 case ARM::VLD3d8Pseudo:
2849 case ARM::VLD3d16Pseudo:
2850 case ARM::VLD3d32Pseudo:
2851 case ARM::VLD1d8TPseudo:
2852 case ARM::VLD1d8TPseudoWB_fixed:
2853 case ARM::VLD1d8TPseudoWB_register:
2854 case ARM::VLD1d16TPseudo:
2855 case ARM::VLD1d16TPseudoWB_fixed:
2856 case ARM::VLD1d16TPseudoWB_register:
2857 case ARM::VLD1d32TPseudo:
2858 case ARM::VLD1d32TPseudoWB_fixed:
2859 case ARM::VLD1d32TPseudoWB_register:
2860 case ARM::VLD1d64TPseudo:
2861 case ARM::VLD1d64TPseudoWB_fixed:
2862 case ARM::VLD1d64TPseudoWB_register:
2863 case ARM::VLD3d8Pseudo_UPD:
2864 case ARM::VLD3d16Pseudo_UPD:
2865 case ARM::VLD3d32Pseudo_UPD:
2866 case ARM::VLD3q8Pseudo_UPD:
2867 case ARM::VLD3q16Pseudo_UPD:
2868 case ARM::VLD3q32Pseudo_UPD:
2869 case ARM::VLD3q8oddPseudo:
2870 case ARM::VLD3q16oddPseudo:
2871 case ARM::VLD3q32oddPseudo:
2872 case ARM::VLD3q8oddPseudo_UPD:
2873 case ARM::VLD3q16oddPseudo_UPD:
2874 case ARM::VLD3q32oddPseudo_UPD:
2875 case ARM::VLD4d8Pseudo:
2876 case ARM::VLD4d16Pseudo:
2877 case ARM::VLD4d32Pseudo:
2878 case ARM::VLD1d8QPseudo:
2879 case ARM::VLD1d8QPseudoWB_fixed:
2880 case ARM::VLD1d8QPseudoWB_register:
2881 case ARM::VLD1d16QPseudo:
2882 case ARM::VLD1d16QPseudoWB_fixed:
2883 case ARM::VLD1d16QPseudoWB_register:
2884 case ARM::VLD1d32QPseudo:
2885 case ARM::VLD1d32QPseudoWB_fixed:
2886 case ARM::VLD1d32QPseudoWB_register:
2887 case ARM::VLD1d64QPseudo:
2888 case ARM::VLD1d64QPseudoWB_fixed:
2889 case ARM::VLD1d64QPseudoWB_register:
2890 case ARM::VLD1q8HighQPseudo:
2891 case ARM::VLD1q8HighQPseudo_UPD:
2892 case ARM::VLD1q8LowQPseudo_UPD:
2893 case ARM::VLD1q8HighTPseudo:
2894 case ARM::VLD1q8HighTPseudo_UPD:
2895 case ARM::VLD1q8LowTPseudo_UPD:
2896 case ARM::VLD1q16HighQPseudo:
2897 case ARM::VLD1q16HighQPseudo_UPD:
2898 case ARM::VLD1q16LowQPseudo_UPD:
2899 case ARM::VLD1q16HighTPseudo:
2900 case ARM::VLD1q16HighTPseudo_UPD:
2901 case ARM::VLD1q16LowTPseudo_UPD:
2902 case ARM::VLD1q32HighQPseudo:
2903 case ARM::VLD1q32HighQPseudo_UPD:
2904 case ARM::VLD1q32LowQPseudo_UPD:
2905 case ARM::VLD1q32HighTPseudo:
2906 case ARM::VLD1q32HighTPseudo_UPD:
2907 case ARM::VLD1q32LowTPseudo_UPD:
2908 case ARM::VLD1q64HighQPseudo:
2909 case ARM::VLD1q64HighQPseudo_UPD:
2910 case ARM::VLD1q64LowQPseudo_UPD:
2911 case ARM::VLD1q64HighTPseudo:
2912 case ARM::VLD1q64HighTPseudo_UPD:
2913 case ARM::VLD1q64LowTPseudo_UPD:
2914 case ARM::VLD4d8Pseudo_UPD:
2915 case ARM::VLD4d16Pseudo_UPD:
2916 case ARM::VLD4d32Pseudo_UPD:
2917 case ARM::VLD4q8Pseudo_UPD:
2918 case ARM::VLD4q16Pseudo_UPD:
2919 case ARM::VLD4q32Pseudo_UPD:
2920 case ARM::VLD4q8oddPseudo:
2921 case ARM::VLD4q16oddPseudo:
2922 case ARM::VLD4q32oddPseudo:
2923 case ARM::VLD4q8oddPseudo_UPD:
2924 case ARM::VLD4q16oddPseudo_UPD:
2925 case ARM::VLD4q32oddPseudo_UPD:
2926 case ARM::VLD3DUPd8Pseudo:
2927 case ARM::VLD3DUPd16Pseudo:
2928 case ARM::VLD3DUPd32Pseudo:
2929 case ARM::VLD3DUPd8Pseudo_UPD:
2930 case ARM::VLD3DUPd16Pseudo_UPD:
2931 case ARM::VLD3DUPd32Pseudo_UPD:
2932 case ARM::VLD4DUPd8Pseudo:
2933 case ARM::VLD4DUPd16Pseudo:
2934 case ARM::VLD4DUPd32Pseudo:
2935 case ARM::VLD4DUPd8Pseudo_UPD:
2936 case ARM::VLD4DUPd16Pseudo_UPD:
2937 case ARM::VLD4DUPd32Pseudo_UPD:
2938 case ARM::VLD2DUPq8EvenPseudo:
2939 case ARM::VLD2DUPq8OddPseudo:
2940 case ARM::VLD2DUPq16EvenPseudo:
2941 case ARM::VLD2DUPq16OddPseudo:
2942 case ARM::VLD2DUPq32EvenPseudo:
2943 case ARM::VLD2DUPq32OddPseudo:
2944 case ARM::VLD2DUPq8OddPseudoWB_fixed:
2945 case ARM::VLD2DUPq8OddPseudoWB_register:
2946 case ARM::VLD2DUPq16OddPseudoWB_fixed:
2947 case ARM::VLD2DUPq16OddPseudoWB_register:
2948 case ARM::VLD2DUPq32OddPseudoWB_fixed:
2949 case ARM::VLD2DUPq32OddPseudoWB_register:
2950 case ARM::VLD3DUPq8EvenPseudo:
2951 case ARM::VLD3DUPq8OddPseudo:
2952 case ARM::VLD3DUPq16EvenPseudo:
2953 case ARM::VLD3DUPq16OddPseudo:
2954 case ARM::VLD3DUPq32EvenPseudo:
2955 case ARM::VLD3DUPq32OddPseudo:
2956 case ARM::VLD3DUPq8OddPseudo_UPD:
2957 case ARM::VLD3DUPq16OddPseudo_UPD:
2958 case ARM::VLD3DUPq32OddPseudo_UPD:
2959 case ARM::VLD4DUPq8EvenPseudo:
2960 case ARM::VLD4DUPq8OddPseudo:
2961 case ARM::VLD4DUPq16EvenPseudo:
2962 case ARM::VLD4DUPq16OddPseudo:
2963 case ARM::VLD4DUPq32EvenPseudo:
2964 case ARM::VLD4DUPq32OddPseudo:
2965 case ARM::VLD4DUPq8OddPseudo_UPD:
2966 case ARM::VLD4DUPq16OddPseudo_UPD:
2967 case ARM::VLD4DUPq32OddPseudo_UPD:
2968 ExpandVLD(MBBI);
2969 return true;
2970
2971 case ARM::VST2q8Pseudo:
2972 case ARM::VST2q16Pseudo:
2973 case ARM::VST2q32Pseudo:
2974 case ARM::VST2q8PseudoWB_fixed:
2975 case ARM::VST2q16PseudoWB_fixed:
2976 case ARM::VST2q32PseudoWB_fixed:
2977 case ARM::VST2q8PseudoWB_register:
2978 case ARM::VST2q16PseudoWB_register:
2979 case ARM::VST2q32PseudoWB_register:
2980 case ARM::VST3d8Pseudo:
2981 case ARM::VST3d16Pseudo:
2982 case ARM::VST3d32Pseudo:
2983 case ARM::VST1d8TPseudo:
2984 case ARM::VST1d8TPseudoWB_fixed:
2985 case ARM::VST1d8TPseudoWB_register:
2986 case ARM::VST1d16TPseudo:
2987 case ARM::VST1d16TPseudoWB_fixed:
2988 case ARM::VST1d16TPseudoWB_register:
2989 case ARM::VST1d32TPseudo:
2990 case ARM::VST1d32TPseudoWB_fixed:
2991 case ARM::VST1d32TPseudoWB_register:
2992 case ARM::VST1d64TPseudo:
2993 case ARM::VST1d64TPseudoWB_fixed:
2994 case ARM::VST1d64TPseudoWB_register:
2995 case ARM::VST3d8Pseudo_UPD:
2996 case ARM::VST3d16Pseudo_UPD:
2997 case ARM::VST3d32Pseudo_UPD:
2998 case ARM::VST3q8Pseudo_UPD:
2999 case ARM::VST3q16Pseudo_UPD:
3000 case ARM::VST3q32Pseudo_UPD:
3001 case ARM::VST3q8oddPseudo:
3002 case ARM::VST3q16oddPseudo:
3003 case ARM::VST3q32oddPseudo:
3004 case ARM::VST3q8oddPseudo_UPD:
3005 case ARM::VST3q16oddPseudo_UPD:
3006 case ARM::VST3q32oddPseudo_UPD:
3007 case ARM::VST4d8Pseudo:
3008 case ARM::VST4d16Pseudo:
3009 case ARM::VST4d32Pseudo:
3010 case ARM::VST1d8QPseudo:
3011 case ARM::VST1d8QPseudoWB_fixed:
3012 case ARM::VST1d8QPseudoWB_register:
3013 case ARM::VST1d16QPseudo:
3014 case ARM::VST1d16QPseudoWB_fixed:
3015 case ARM::VST1d16QPseudoWB_register:
3016 case ARM::VST1d32QPseudo:
3017 case ARM::VST1d32QPseudoWB_fixed:
3018 case ARM::VST1d32QPseudoWB_register:
3019 case ARM::VST1d64QPseudo:
3020 case ARM::VST1d64QPseudoWB_fixed:
3021 case ARM::VST1d64QPseudoWB_register:
3022 case ARM::VST4d8Pseudo_UPD:
3023 case ARM::VST4d16Pseudo_UPD:
3024 case ARM::VST4d32Pseudo_UPD:
3025 case ARM::VST1q8HighQPseudo:
3026 case ARM::VST1q8LowQPseudo_UPD:
3027 case ARM::VST1q8HighTPseudo:
3028 case ARM::VST1q8LowTPseudo_UPD:
3029 case ARM::VST1q16HighQPseudo:
3030 case ARM::VST1q16LowQPseudo_UPD:
3031 case ARM::VST1q16HighTPseudo:
3032 case ARM::VST1q16LowTPseudo_UPD:
3033 case ARM::VST1q32HighQPseudo:
3034 case ARM::VST1q32LowQPseudo_UPD:
3035 case ARM::VST1q32HighTPseudo:
3036 case ARM::VST1q32LowTPseudo_UPD:
3037 case ARM::VST1q64HighQPseudo:
3038 case ARM::VST1q64LowQPseudo_UPD:
3039 case ARM::VST1q64HighTPseudo:
3040 case ARM::VST1q64LowTPseudo_UPD:
3041 case ARM::VST1q8HighTPseudo_UPD:
3042 case ARM::VST1q16HighTPseudo_UPD:
3043 case ARM::VST1q32HighTPseudo_UPD:
3044 case ARM::VST1q64HighTPseudo_UPD:
3045 case ARM::VST1q8HighQPseudo_UPD:
3046 case ARM::VST1q16HighQPseudo_UPD:
3047 case ARM::VST1q32HighQPseudo_UPD:
3048 case ARM::VST1q64HighQPseudo_UPD:
3049 case ARM::VST4q8Pseudo_UPD:
3050 case ARM::VST4q16Pseudo_UPD:
3051 case ARM::VST4q32Pseudo_UPD:
3052 case ARM::VST4q8oddPseudo:
3053 case ARM::VST4q16oddPseudo:
3054 case ARM::VST4q32oddPseudo:
3055 case ARM::VST4q8oddPseudo_UPD:
3056 case ARM::VST4q16oddPseudo_UPD:
3057 case ARM::VST4q32oddPseudo_UPD:
3058 ExpandVST(MBBI);
3059 return true;
3060
3061 case ARM::VLD1LNq8Pseudo:
3062 case ARM::VLD1LNq16Pseudo:
3063 case ARM::VLD1LNq32Pseudo:
3064 case ARM::VLD1LNq8Pseudo_UPD:
3065 case ARM::VLD1LNq16Pseudo_UPD:
3066 case ARM::VLD1LNq32Pseudo_UPD:
3067 case ARM::VLD2LNd8Pseudo:
3068 case ARM::VLD2LNd16Pseudo:
3069 case ARM::VLD2LNd32Pseudo:
3070 case ARM::VLD2LNq16Pseudo:
3071 case ARM::VLD2LNq32Pseudo:
3072 case ARM::VLD2LNd8Pseudo_UPD:
3073 case ARM::VLD2LNd16Pseudo_UPD:
3074 case ARM::VLD2LNd32Pseudo_UPD:
3075 case ARM::VLD2LNq16Pseudo_UPD:
3076 case ARM::VLD2LNq32Pseudo_UPD:
3077 case ARM::VLD3LNd8Pseudo:
3078 case ARM::VLD3LNd16Pseudo:
3079 case ARM::VLD3LNd32Pseudo:
3080 case ARM::VLD3LNq16Pseudo:
3081 case ARM::VLD3LNq32Pseudo:
3082 case ARM::VLD3LNd8Pseudo_UPD:
3083 case ARM::VLD3LNd16Pseudo_UPD:
3084 case ARM::VLD3LNd32Pseudo_UPD:
3085 case ARM::VLD3LNq16Pseudo_UPD:
3086 case ARM::VLD3LNq32Pseudo_UPD:
3087 case ARM::VLD4LNd8Pseudo:
3088 case ARM::VLD4LNd16Pseudo:
3089 case ARM::VLD4LNd32Pseudo:
3090 case ARM::VLD4LNq16Pseudo:
3091 case ARM::VLD4LNq32Pseudo:
3092 case ARM::VLD4LNd8Pseudo_UPD:
3093 case ARM::VLD4LNd16Pseudo_UPD:
3094 case ARM::VLD4LNd32Pseudo_UPD:
3095 case ARM::VLD4LNq16Pseudo_UPD:
3096 case ARM::VLD4LNq32Pseudo_UPD:
3097 case ARM::VST1LNq8Pseudo:
3098 case ARM::VST1LNq16Pseudo:
3099 case ARM::VST1LNq32Pseudo:
3100 case ARM::VST1LNq8Pseudo_UPD:
3101 case ARM::VST1LNq16Pseudo_UPD:
3102 case ARM::VST1LNq32Pseudo_UPD:
3103 case ARM::VST2LNd8Pseudo:
3104 case ARM::VST2LNd16Pseudo:
3105 case ARM::VST2LNd32Pseudo:
3106 case ARM::VST2LNq16Pseudo:
3107 case ARM::VST2LNq32Pseudo:
3108 case ARM::VST2LNd8Pseudo_UPD:
3109 case ARM::VST2LNd16Pseudo_UPD:
3110 case ARM::VST2LNd32Pseudo_UPD:
3111 case ARM::VST2LNq16Pseudo_UPD:
3112 case ARM::VST2LNq32Pseudo_UPD:
3113 case ARM::VST3LNd8Pseudo:
3114 case ARM::VST3LNd16Pseudo:
3115 case ARM::VST3LNd32Pseudo:
3116 case ARM::VST3LNq16Pseudo:
3117 case ARM::VST3LNq32Pseudo:
3118 case ARM::VST3LNd8Pseudo_UPD:
3119 case ARM::VST3LNd16Pseudo_UPD:
3120 case ARM::VST3LNd32Pseudo_UPD:
3121 case ARM::VST3LNq16Pseudo_UPD:
3122 case ARM::VST3LNq32Pseudo_UPD:
3123 case ARM::VST4LNd8Pseudo:
3124 case ARM::VST4LNd16Pseudo:
3125 case ARM::VST4LNd32Pseudo:
3126 case ARM::VST4LNq16Pseudo:
3127 case ARM::VST4LNq32Pseudo:
3128 case ARM::VST4LNd8Pseudo_UPD:
3129 case ARM::VST4LNd16Pseudo_UPD:
3130 case ARM::VST4LNd32Pseudo_UPD:
3131 case ARM::VST4LNq16Pseudo_UPD:
3132 case ARM::VST4LNq32Pseudo_UPD:
3133 ExpandLaneOp(MBBI);
3134 return true;
3135
3136 case ARM::VTBL3Pseudo: ExpandVTBL(MBBI, ARM::VTBL3, false); return true;
3137 case ARM::VTBL4Pseudo: ExpandVTBL(MBBI, ARM::VTBL4, false); return true;
3138 case ARM::VTBX3Pseudo: ExpandVTBL(MBBI, ARM::VTBX3, true); return true;
3139 case ARM::VTBX4Pseudo: ExpandVTBL(MBBI, ARM::VTBX4, true); return true;
3140
3141 case ARM::MQQPRLoad:
3142 case ARM::MQQPRStore:
3143 case ARM::MQQQQPRLoad:
3144 case ARM::MQQQQPRStore:
3145 ExpandMQQPRLoadStore(MBBI);
3146 return true;
3147
3148 case ARM::tCMP_SWAP_8:
3149 assert(STI->isThumb());
3150 return ExpandCMP_SWAP(MBB, MBBI, ARM::t2LDREXB, ARM::t2STREXB, ARM::tUXTB,
3151 NextMBBI);
3152 case ARM::tCMP_SWAP_16:
3153 assert(STI->isThumb());
3154 return ExpandCMP_SWAP(MBB, MBBI, ARM::t2LDREXH, ARM::t2STREXH, ARM::tUXTH,
3155 NextMBBI);
3156 case ARM::tCMP_SWAP_32:
3157 assert(STI->isThumb());
3158 return ExpandCMP_SWAP(MBB, MBBI, ARM::t2LDREX, ARM::t2STREX, 0, NextMBBI);
3159
3160 case ARM::CMP_SWAP_8:
3161 assert(!STI->isThumb());
3162 return ExpandCMP_SWAP(MBB, MBBI, ARM::LDREXB, ARM::STREXB, ARM::UXTB,
3163 NextMBBI);
3164 case ARM::CMP_SWAP_16:
3165 assert(!STI->isThumb());
3166 return ExpandCMP_SWAP(MBB, MBBI, ARM::LDREXH, ARM::STREXH, ARM::UXTH,
3167 NextMBBI);
3168 case ARM::CMP_SWAP_32:
3169 assert(!STI->isThumb());
3170 return ExpandCMP_SWAP(MBB, MBBI, ARM::LDREX, ARM::STREX, 0, NextMBBI);
3171
3172 case ARM::CMP_SWAP_64:
3173 return ExpandCMP_SWAP_64(MBB, MBBI, NextMBBI);
3174
3175 case ARM::tBL_PUSHLR:
3176 case ARM::BL_PUSHLR: {
3177 const bool Thumb = Opcode == ARM::tBL_PUSHLR;
3178 Register Reg = MI.getOperand(0).getReg();
3179 assert(Reg == ARM::LR && "expect LR register!");
3180 MachineInstrBuilder MIB;
3181 if (Thumb) {
3182 // push {lr}
3183 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::tPUSH))
3184 .add(predOps(ARMCC::AL))
3185 .addReg(Reg);
3186
3187 // bl __gnu_mcount_nc
3188 MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::tBL));
3189 } else {
3190 // stmdb sp!, {lr}
3191 BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::STMDB_UPD))
3192 .addReg(ARM::SP, RegState::Define)
3193 .addReg(ARM::SP)
3194 .add(predOps(ARMCC::AL))
3195 .addReg(Reg);
3196
3197 // bl __gnu_mcount_nc
3198 MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::BL));
3199 }
3200 MIB.cloneMemRefs(MI);
3201 for (const MachineOperand &MO : llvm::drop_begin(MI.operands()))
3202 MIB.add(MO);
3203 MI.eraseFromParent();
3204 return true;
3205 }
3206 case ARM::t2CALL_BTI: {
3207 MachineFunction &MF = *MI.getMF();
3208 MachineInstrBuilder MIB =
3209 BuildMI(MF, MI.getDebugLoc(), TII->get(ARM::tBL));
3210 MIB.cloneMemRefs(MI);
3211 for (unsigned i = 0; i < MI.getNumOperands(); ++i)
3212 MIB.add(MI.getOperand(i));
3213 if (MI.isCandidateForCallSiteEntry())
3214 MF.moveCallSiteInfo(&MI, MIB.getInstr());
3215 MIBundleBuilder Bundler(MBB, MI);
3216 Bundler.append(MIB);
3217 Bundler.append(BuildMI(MF, MI.getDebugLoc(), TII->get(ARM::t2BTI)));
3218 finalizeBundle(MBB, Bundler.begin(), Bundler.end());
3219 MI.eraseFromParent();
3220 return true;
3221 }
3222 case ARM::LOADDUAL:
3223 case ARM::STOREDUAL: {
3224 Register PairReg = MI.getOperand(0).getReg();
3225
3226 MachineInstrBuilder MIB =
3227 BuildMI(MBB, MBBI, MI.getDebugLoc(),
3228 TII->get(Opcode == ARM::LOADDUAL ? ARM::LDRD : ARM::STRD))
3229 .addReg(TRI->getSubReg(PairReg, ARM::gsub_0),
3230 Opcode == ARM::LOADDUAL ? RegState::Define : 0)
3231 .addReg(TRI->getSubReg(PairReg, ARM::gsub_1),
3232 Opcode == ARM::LOADDUAL ? RegState::Define : 0);
3233 for (const MachineOperand &MO : llvm::drop_begin(MI.operands()))
3234 MIB.add(MO);
3235 MIB.add(predOps(ARMCC::AL));
3236 MIB.cloneMemRefs(MI);
3237 MI.eraseFromParent();
3238 return true;
3239 }
3240 }
3241}
3242
3243bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) {
3244 bool Modified = false;
3245
3246 MachineBasicBlock::iterator MBBI = MBB.begin(), E = MBB.end();
3247 while (MBBI != E) {
3248 MachineBasicBlock::iterator NMBBI = std::next(MBBI);
3249 Modified |= ExpandMI(MBB, MBBI, NMBBI);
3250 MBBI = NMBBI;
3251 }
3252
3253 return Modified;
3254}
3255
3256bool ARMExpandPseudo::runOnMachineFunction(MachineFunction &MF) {
3257 STI = &MF.getSubtarget<ARMSubtarget>();
3258 TII = STI->getInstrInfo();
3259 TRI = STI->getRegisterInfo();
3260 AFI = MF.getInfo<ARMFunctionInfo>();
3261
3262 LLVM_DEBUG(dbgs() << "********** ARM EXPAND PSEUDO INSTRUCTIONS **********\n"
3263 << "********** Function: " << MF.getName() << '\n');
3264
3265 bool Modified = false;
3266 for (MachineBasicBlock &MBB : MF)
3267 Modified |= ExpandMBB(MBB);
3268 if (VerifyARMPseudo)
3269 MF.verify(this, "After expanding ARM pseudo instructions.");
3270
3271 LLVM_DEBUG(dbgs() << "***************************************************\n");
3272 return Modified;
3273}
3274
3275/// createARMExpandPseudoPass - returns an instance of the pseudo instruction
3276/// expansion pass.
3277FunctionPass *llvm::createARMExpandPseudoPass() {
3278 return new ARMExpandPseudo();
3279}
SubReg
unsigned SubReg
Definition: AArch64AdvSIMDScalarPass.cpp:104
MBB
MachineBasicBlock & MBB
Definition: AArch64SLSHardening.cpp:72
DL
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
Definition: AArch64SLSHardening.cpp:74
MBBI
MachineBasicBlock MachineBasicBlock::iterator MBBI
Definition: AArch64SLSHardening.cpp:73
determineFPRegsToClear
static bool determineFPRegsToClear(const MachineInstr &MI, BitVector &ClearRegs)
Definition: ARMExpandPseudoInsts.cpp:1212
CMSEPopCalleeSaves
static void CMSEPopCalleeSaves(const TargetInstrInfo &TII, MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, int JumpReg, bool Thumb1Only)
Definition: ARMExpandPseudoInsts.cpp:2102
getMovOperand
static MachineOperand getMovOperand(const MachineOperand &MO, unsigned TargetFlag)
Definition: ARMExpandPseudoInsts.cpp:954
GetDSubRegs
static void GetDSubRegs(unsigned Reg, NEONRegSpacing RegSpc, const TargetRegisterInfo *TRI, unsigned &D0, unsigned &D1, unsigned &D2, unsigned &D3)
GetDSubRegs - Get 4 D subregisters of a Q, QQ, or QQQQ register, corresponding to the specified regis...
Definition: ARMExpandPseudoInsts.cpp:518
makeImplicit
static MachineOperand makeImplicit(const MachineOperand &MO)
Definition: ARMExpandPseudoInsts.cpp:948
addExclusiveRegPair
static void addExclusiveRegPair(MachineInstrBuilder &MIB, MachineOperand &Reg, unsigned Flags, bool IsThumb, const TargetRegisterInfo *TRI)
ARM's ldrexd/strexd take a consecutive register pair (represented as a single GPRPair register),...
Definition: ARMExpandPseudoInsts.cpp:1924
VerifyARMPseudo
static cl::opt< bool > VerifyARMPseudo("verify-arm-pseudo-expand", cl::Hidden, cl::desc("Verify machine code after expanding ARM pseudos"))
CMSEPushCalleeSaves
static void CMSEPushCalleeSaves(const TargetInstrInfo &TII, MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, int JumpReg, const LivePhysRegs &LiveRegs, bool Thumb1Only)
Definition: ARMExpandPseudoInsts.cpp:2042
definesOrUsesFPReg
static bool definesOrUsesFPReg(const MachineInstr &MI)
Definition: ARMExpandPseudoInsts.cpp:1749
determineGPRegsToClear
static void determineGPRegsToClear(const MachineInstr &MI, const std::initializer_list< unsigned > &Regs, SmallVectorImpl< unsigned > &ClearRegs)
Definition: ARMExpandPseudoInsts.cpp:1162
DEBUG_TYPE
#define DEBUG_TYPE
Definition: ARMExpandPseudoInsts.cpp:32
IsAnAddressOperand
static bool IsAnAddressOperand(const MachineOperand &MO)
Definition: ARMExpandPseudoInsts.cpp:910
ARM_EXPAND_PSEUDO_NAME
#define ARM_EXPAND_PSEUDO_NAME
Definition: ARMExpandPseudoInsts.cpp:38
CMSE_FP_SAVE_SIZE
static const int CMSE_FP_SAVE_SIZE
Definition: ARMExpandPseudoInsts.cpp:1160
LookupNEONLdSt
static const NEONLdStTableEntry * LookupNEONLdSt(unsigned Opcode)
LookupNEONLdSt - Search the NEONLdStTable for information about a NEON load or store pseudo instructi...
Definition: ARMExpandPseudoInsts.cpp:499
NEONLdStTable
static const NEONLdStTableEntry NEONLdStTable[]
Definition: ARMExpandPseudoInsts.cpp:170
D
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
LLVM_ATTRIBUTE_UNUSED
#define LLVM_ATTRIBUTE_UNUSED
Definition: Compiler.h:203
LLVM_DEBUG
#define LLVM_DEBUG(X)
Definition: Debug.h:101
End
bool End
Definition: ELF_riscv.cpp:480
TII
const HexagonInstrInfo * TII
Definition: HexagonCopyToCombine.cpp:125
MI
IRTranslator LLVM IR MI
Definition: IRTranslator.cpp:113
LivePhysRegs.h
This file implements the LivePhysRegs utility for tracking liveness of physical registers.
I
#define I(x, y, z)
Definition: MD5.cpp:58
TRI
unsigned const TargetRegisterInfo * TRI
Definition: MachineSink.cpp:1875
INITIALIZE_PASS
#define INITIALIZE_PASS(passName, arg, name, cfg, analysis)
Definition: PassSupport.h:38
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
contains
static bool contains(SmallPtrSetImpl< ConstantExpr * > &Cache, ConstantExpr *Expr, Constant *C)
Definition: Value.cpp:469
FramePtr
static const unsigned FramePtr
Definition: XCoreFrameLowering.cpp:34
llvm::ARMBaseInstrInfo::getRegisterInfo
virtual const ARMBaseRegisterInfo & getRegisterInfo() const =0
llvm::ARMBaseRegisterInfo::hasBasePointer
bool hasBasePointer(const MachineFunction &MF) const
Definition: ARMBaseRegisterInfo.cpp:416
llvm::ARMBaseRegisterInfo::getFrameRegister
Register getFrameRegister(const MachineFunction &MF) const override
Definition: ARMBaseRegisterInfo.cpp:485
llvm::ARMConstantPoolConstant::Create
static ARMConstantPoolConstant * Create(const Constant *C, unsigned ID)
Definition: ARMConstantPoolValue.cpp:148
llvm::ARMConstantPoolSymbol::Create
static ARMConstantPoolSymbol * Create(LLVMContext &C, StringRef s, unsigned ID, unsigned char PCAdj)
Definition: ARMConstantPoolValue.cpp:233
llvm::ARMFunctionInfo
ARMFunctionInfo - This class is derived from MachineFunctionInfo and contains private ARM-specific in...
Definition: ARMMachineFunctionInfo.h:34
llvm::BitVector::reset
BitVector & reset()
Definition: BitVector.h:392
llvm::BitVector::count
size_type count() const
count - Returns the number of bits which are set.
Definition: BitVector.h:162
llvm::BitVector::size
size_type size() const
size - Returns the number of bits in this bitvector.
Definition: BitVector.h:159
llvm::DWARFExpression::Operation
This class represents an Operation in the Expression.
Definition: DWARFExpression.h:32
llvm::DebugLoc
A debug info location.
Definition: DebugLoc.h:33
llvm::FunctionPass
FunctionPass class - This class is used to implement most global optimizations.
Definition: Pass.h:311
llvm::Function::getContext
LLVMContext & getContext() const
getContext - Return a reference to the LLVMContext associated with this function.
Definition: Function.cpp:356
llvm::Function::needsUnwindTableEntry
bool needsUnwindTableEntry() const
True if this function needs an unwind table.
Definition: Function.h:660
llvm::LivePhysRegs
A set of physical registers with utility functions to track liveness when walking backward/forward th...
Definition: LivePhysRegs.h:52
llvm::LivePhysRegs::contains
bool contains(MCPhysReg Reg) const
Returns true if register Reg is contained in the set.
Definition: LivePhysRegs.h:109
llvm::LivePhysRegs::stepBackward
void stepBackward(const MachineInstr &MI)
Simulates liveness when stepping backwards over an instruction(bundle).
Definition: LivePhysRegs.cpp:68
llvm::LivePhysRegs::addLiveOuts
void addLiveOuts(const MachineBasicBlock &MBB)
Adds all live-out registers of basic block MBB.
Definition: LivePhysRegs.cpp:232
llvm::MCAsmInfo::usesWindowsCFI
bool usesWindowsCFI() const
Definition: MCAsmInfo.h:799
llvm::MIBundleBuilder
Helper class for constructing bundles of MachineInstrs.
Definition: MachineInstrBuilder.h:590
llvm::MachineBasicBlock::transferSuccessors
void transferSuccessors(MachineBasicBlock *FromMBB)
Transfers all the successors from MBB to this machine basic block (i.e., copies all the successors Fr...
Definition: MachineBasicBlock.cpp:909
llvm::MachineBasicBlock::getBasicBlock
const BasicBlock * getBasicBlock() const
Return the LLVM basic block that this instance corresponded to originally.
Definition: MachineBasicBlock.h:233
llvm::MachineBasicBlock::addSuccessor
void addSuccessor(MachineBasicBlock *Succ, BranchProbability Prob=BranchProbability::getUnknown())
Add Succ as a successor of this MachineBasicBlock.
Definition: MachineBasicBlock.cpp:790
llvm::MachineBasicBlock::getLastNonDebugInstr
iterator getLastNonDebugInstr(bool SkipPseudoOp=true)
Returns an iterator to the last non-debug instruction in the basic block, or end().
Definition: MachineBasicBlock.cpp:271
llvm::MachineBasicBlock::addLiveIn
void addLiveIn(MCRegister PhysReg, LaneBitmask LaneMask=LaneBitmask::getAll())
Adds the specified register as a live in.
Definition: MachineBasicBlock.h:428
llvm::MachineBasicBlock::getParent
const MachineFunction * getParent() const
Return the MachineFunction containing this basic block.
Definition: MachineBasicBlock.h:285
llvm::MachineBasicBlock::erase
instr_iterator erase(instr_iterator I)
Remove an instruction from the instruction list and delete it.
Definition: MachineBasicBlock.cpp:1426
llvm::MachineBasicBlock::rbegin
reverse_iterator rbegin()
Definition: MachineBasicBlock.h:333
llvm::MachineBasicBlock::splice
void splice(iterator Where, MachineBasicBlock *Other, iterator From)
Take an instruction from MBB 'Other' at the position From, and insert it into this MBB right before '...
Definition: MachineBasicBlock.h:1071
llvm::MachineConstantPoolValue
Abstract base class for all machine specific constantpool value subclasses.
Definition: MachineConstantPool.h:35
llvm::MachineConstantPool
The MachineConstantPool class keeps track of constants referenced by a function which must be spilled...
Definition: MachineConstantPool.h:117
llvm::MachineConstantPool::getConstantPoolIndex
unsigned getConstantPoolIndex(const Constant *C, Align Alignment)
getConstantPoolIndex - Create a new entry in the constant pool or return an existing one.
Definition: MachineFunction.cpp:1478
llvm::MachineFrameInfo
The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted.
Definition: MachineFrameInfo.h:106
llvm::MachineFrameInfo::getMaxAlign
Align getMaxAlign() const
Return the alignment in bytes that this function must be aligned to, which is greater than the defaul...
Definition: MachineFrameInfo.h:601
llvm::MachineFunctionPass
MachineFunctionPass - This class adapts the FunctionPass interface to allow convenient creation of pa...
Definition: MachineFunctionPass.h:30
llvm::MachineFunctionPass::runOnMachineFunction
virtual bool runOnMachineFunction(MachineFunction &MF)=0
runOnMachineFunction - This method must be overloaded to perform the desired machine code transformat...
llvm::MachineFunctionPass::getRequiredProperties
virtual MachineFunctionProperties getRequiredProperties() const
Definition: MachineFunctionPass.h:56
llvm::MachineFunctionProperties
Properties which a MachineFunction may have at a given point in time.
Definition: MachineFunction.h:129
llvm::MachineFunctionProperties::set
MachineFunctionProperties & set(Property P)
Definition: MachineFunction.h:198
llvm::MachineFunction::getSubtarget
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
Definition: MachineFunction.h:718
llvm::MachineFunction::getName
StringRef getName() const
getName - Return the name of the corresponding LLVM function.
Definition: MachineFunction.cpp:609
llvm::MachineFunction::getFrameInfo
MachineFrameInfo & getFrameInfo()
getFrameInfo - Return the frame info object for the current function.
Definition: MachineFunction.h:734
llvm::MachineFunction::getFunction
Function & getFunction()
Return the LLVM function that this machine code represents.
Definition: MachineFunction.h:684
llvm::MachineFunction::getTarget
const LLVMTargetMachine & getTarget() const
getTarget - Return the target machine this machine code is compiled with
Definition: MachineFunction.h:714
llvm::MachineFunction::getInfo
Ty * getInfo()
getInfo - Keep track of various per-function pieces of information for backends that would like to do...
Definition: MachineFunction.h:816
llvm::MachineFunction::getConstantPool
MachineConstantPool * getConstantPool()
getConstantPool - Return the constant pool object for the current function.
Definition: MachineFunction.h:750
llvm::MachineFunction::moveCallSiteInfo
void moveCallSiteInfo(const MachineInstr *Old, const MachineInstr *New)
Move the call site info from Old to \New call site info.
Definition: MachineFunction.cpp:929
llvm::MachineFunction::CreateMachineBasicBlock
MachineBasicBlock * CreateMachineBasicBlock(const BasicBlock *BB=nullptr, std::optional< UniqueBBID > BBID=std::nullopt)
CreateMachineBasicBlock - Allocate a new MachineBasicBlock.
Definition: MachineFunction.cpp:461
llvm::MachineFunction::insert
void insert(iterator MBBI, MachineBasicBlock *MBB)
Definition: MachineFunction.h:941
llvm::MachineInstrBuilder::addExternalSymbol
const MachineInstrBuilder & addExternalSymbol(const char *FnName, unsigned TargetFlags=0) const
Definition: MachineInstrBuilder.h:185
llvm::MachineInstrBuilder::addImm
const MachineInstrBuilder & addImm(int64_t Val) const
Add a new immediate operand.
Definition: MachineInstrBuilder.h:132
llvm::MachineInstrBuilder::add
const MachineInstrBuilder & add(const MachineOperand &MO) const
Definition: MachineInstrBuilder.h:225
llvm::MachineInstrBuilder::addConstantPoolIndex
const MachineInstrBuilder & addConstantPoolIndex(unsigned Idx, int Offset=0, unsigned TargetFlags=0) const
Definition: MachineInstrBuilder.h:159
llvm::MachineInstrBuilder::addGlobalAddress
const MachineInstrBuilder & addGlobalAddress(const GlobalValue *GV, int64_t Offset=0, unsigned TargetFlags=0) const
Definition: MachineInstrBuilder.h:178
llvm::MachineInstrBuilder::addReg
const MachineInstrBuilder & addReg(Register RegNo, unsigned flags=0, unsigned SubReg=0) const
Add a new virtual register operand.
Definition: MachineInstrBuilder.h:98
llvm::MachineInstrBuilder::addMBB
const MachineInstrBuilder & addMBB(MachineBasicBlock *MBB, unsigned TargetFlags=0) const
Definition: MachineInstrBuilder.h:147
llvm::MachineInstrBuilder::cloneMemRefs
const MachineInstrBuilder & cloneMemRefs(const MachineInstr &OtherMI) const
Definition: MachineInstrBuilder.h:214
llvm::MachineInstrBuilder::setMIFlags
const MachineInstrBuilder & setMIFlags(unsigned Flags) const
Definition: MachineInstrBuilder.h:274
llvm::MachineInstrBuilder::copyImplicitOps
const MachineInstrBuilder & copyImplicitOps(const MachineInstr &OtherMI) const
Copy all the implicit operands from OtherMI onto this one.
Definition: MachineInstrBuilder.h:333
llvm::MachineInstrBuilder::getInstr
MachineInstr * getInstr() const
If conversion operators fail, use this method to get the MachineInstr explicitly.
Definition: MachineInstrBuilder.h:90
llvm::MachineInstr
Representation of each machine instruction.
Definition: MachineInstr.h:69
llvm::MachineInstr::addOperand
void addOperand(MachineFunction &MF, const MachineOperand &Op)
Add the specified operand to the instruction.
Definition: MachineInstr.cpp:202
llvm::MachineInstr::addRegisterKilled
bool addRegisterKilled(Register IncomingReg, const TargetRegisterInfo *RegInfo, bool AddIfNotFound=false)
We have determined MI kills a register.
Definition: MachineInstr.cpp:1990
llvm::MachineInstr::implicit_operands
iterator_range< mop_iterator > implicit_operands()
Definition: MachineInstr.h:688
llvm::MachineInstr::getOperand
const MachineOperand & getOperand(unsigned i) const
Definition: MachineInstr.h:568
llvm::MachineJumpTableInfo::EK_Inline
@ EK_Inline
EK_Inline - Jump table entries are emitted inline at their point of use.
Definition: MachineJumpTableInfo.h:78
llvm::MachineOperand
MachineOperand class - Representation of each machine instruction operand.
Definition: MachineOperand.h:48
llvm::MachineOperand::getGlobal
const GlobalValue * getGlobal() const
Definition: MachineOperand.h:582
llvm::MachineOperand::setImplicit
void setImplicit(bool Val=true)
Definition: MachineOperand.h:514
llvm::MachineOperand::CreateES
static MachineOperand CreateES(const char *SymName, unsigned TargetFlags=0)
Definition: MachineOperand.h:904
llvm::MachineOperand::getImm
int64_t getImm() const
Definition: MachineOperand.h:556
llvm::MachineOperand::isImplicit
bool isImplicit() const
Definition: MachineOperand.h:389
llvm::MachineOperand::isReg
bool isReg() const
isReg - Tests if this is a MO_Register operand.
Definition: MachineOperand.h:329
llvm::MachineOperand::setIsDead
void setIsDead(bool Val=true)
Definition: MachineOperand.h:525
llvm::MachineOperand::isImm
bool isImm() const
isImm - Tests if this is a MO_Immediate operand.
Definition: MachineOperand.h:331
llvm::MachineOperand::isSymbol
bool isSymbol() const
isSymbol - Tests if this is a MO_ExternalSymbol operand.
Definition: MachineOperand.h:349
llvm::MachineOperand::getTargetFlags
unsigned getTargetFlags() const
Definition: MachineOperand.h:226
llvm::MachineOperand::CreateImm
static MachineOperand CreateImm(int64_t Val)
Definition: MachineOperand.h:819
llvm::MachineOperand::isGlobal
bool isGlobal() const
isGlobal - Tests if this is a MO_GlobalAddress operand.
Definition: MachineOperand.h:347
llvm::MachineOperand::getType
MachineOperandType getType() const
getType - Returns the MachineOperandType for this operand.
Definition: MachineOperand.h:224
llvm::MachineOperand::CreateJTI
static MachineOperand CreateJTI(unsigned Idx, unsigned TargetFlags=0)
Definition: MachineOperand.h:890
llvm::MachineOperand::getSymbolName
const char * getSymbolName() const
Definition: MachineOperand.h:637
llvm::MachineOperand::setIsUndef
void setIsUndef(bool Val=true)
Definition: MachineOperand.h:530
llvm::MachineOperand::getReg
Register getReg() const
getReg - Returns the register number.
Definition: MachineOperand.h:369
llvm::MachineOperand::CreateGA
static MachineOperand CreateGA(const GlobalValue *GV, int64_t Offset, unsigned TargetFlags=0)
Definition: MachineOperand.h:896
llvm::MachineOperand::MO_CFIIndex
@ MO_CFIIndex
MCCFIInstruction index.
Definition: MachineOperand.h:67
llvm::MachineOperand::MO_Immediate
@ MO_Immediate
Immediate operand.
Definition: MachineOperand.h:52
llvm::MachineOperand::MO_ConstantPoolIndex
@ MO_ConstantPoolIndex
Address of indexed Constant in Constant Pool.
Definition: MachineOperand.h:57
llvm::MachineOperand::MO_MCSymbol
@ MO_MCSymbol
MCSymbol reference (for debug/eh info)
Definition: MachineOperand.h:66
llvm::MachineOperand::MO_Predicate
@ MO_Predicate
Generic predicate for ISel.
Definition: MachineOperand.h:69
llvm::MachineOperand::MO_GlobalAddress
@ MO_GlobalAddress
Address of a global value.
Definition: MachineOperand.h:61
llvm::MachineOperand::MO_RegisterMask
@ MO_RegisterMask
Mask of preserved registers.
Definition: MachineOperand.h:63
llvm::MachineOperand::MO_ShuffleMask
@ MO_ShuffleMask
Other IR Constant for ISel (shuffle masks)
Definition: MachineOperand.h:70
llvm::MachineOperand::MO_CImmediate
@ MO_CImmediate
Immediate >64bit operand.
Definition: MachineOperand.h:53
llvm::MachineOperand::MO_BlockAddress
@ MO_BlockAddress
Address of a basic block.
Definition: MachineOperand.h:62
llvm::MachineOperand::MO_DbgInstrRef
@ MO_DbgInstrRef
Integer indices referring to an instruction+operand.
Definition: MachineOperand.h:71
llvm::MachineOperand::MO_MachineBasicBlock
@ MO_MachineBasicBlock
MachineBasicBlock reference.
Definition: MachineOperand.h:55
llvm::MachineOperand::MO_FrameIndex
@ MO_FrameIndex
Abstract Stack Frame Index.
Definition: MachineOperand.h:56
llvm::MachineOperand::MO_Register
@ MO_Register
Register operand.
Definition: MachineOperand.h:51
llvm::MachineOperand::MO_ExternalSymbol
@ MO_ExternalSymbol
Name of external global symbol.
Definition: MachineOperand.h:60
llvm::MachineOperand::MO_IntrinsicID
@ MO_IntrinsicID
Intrinsic ID for ISel.
Definition: MachineOperand.h:68
llvm::MachineOperand::MO_JumpTableIndex
@ MO_JumpTableIndex
Address of indexed Jump Table for switch.
Definition: MachineOperand.h:59
llvm::MachineOperand::MO_TargetIndex
@ MO_TargetIndex
Target-dependent index+offset operand.
Definition: MachineOperand.h:58
llvm::MachineOperand::MO_Metadata
@ MO_Metadata
Metadata reference (for debug info)
Definition: MachineOperand.h:65
llvm::MachineOperand::MO_FPImmediate
@ MO_FPImmediate
Floating-point immediate operand.
Definition: MachineOperand.h:54
llvm::MachineOperand::MO_RegisterLiveOut
@ MO_RegisterLiveOut
Mask of live-out registers.
Definition: MachineOperand.h:64
llvm::MachineOperand::getOffset
int64_t getOffset() const
Return the offset from the symbol in this operand.
Definition: MachineOperand.h:629
llvm::Pass::dump
void dump() const
Definition: Pass.cpp:136
llvm::Pass::getPassName
virtual StringRef getPassName() const
getPassName - Return a nice clean name for a pass.
Definition: Pass.cpp:81
llvm::Register
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
llvm::SmallVectorBase::empty
bool empty() const
Definition: SmallVector.h:94
llvm::SmallVectorBase::size
size_t size() const
Definition: SmallVector.h:91
llvm::SmallVectorImpl
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: SmallVector.h:586
llvm::SmallVectorTemplateBase::push_back
void push_back(const T &Elt)
Definition: SmallVector.h:426
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1209
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
llvm::TargetFrameLowering::hasFP
virtual bool hasFP(const MachineFunction &MF) const =0
hasFP - Return true if the specified function should have a dedicated frame pointer register.
llvm::TargetInstrInfo
TargetInstrInfo - Interface to description of machine instruction set.
Definition: TargetInstrInfo.h:111
llvm::TargetMachine::getMCAsmInfo
const MCAsmInfo * getMCAsmInfo() const
Return target specific asm information.
Definition: TargetMachine.h:211
llvm::TargetRegisterInfo
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
Definition: TargetRegisterInfo.h:238
llvm::TargetSubtargetInfo::getFrameLowering
virtual const TargetFrameLowering * getFrameLowering() const
Definition: TargetSubtargetInfo.h:97
llvm::TargetSubtargetInfo::getInstrInfo
virtual const TargetInstrInfo * getInstrInfo() const
Definition: TargetSubtargetInfo.h:96
llvm::ilist_node_impl::getIterator
self_iterator getIterator()
Definition: ilist_node.h:109
uint16_t
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:143
llvm::ARMCP::GOT_PREL
@ GOT_PREL
Thread Local Storage (General Dynamic Mode)
Definition: ARMConstantPoolValue.h:49
llvm::ARMII::MO_LO16
@ MO_LO16
MO_LO16 - On a symbol operand, this represents a relocation containing lower 16 bit of the address.
Definition: ARMBaseInfo.h:250
llvm::ARMII::MO_LO_0_7
@ MO_LO_0_7
MO_LO_0_7 - On a symbol operand, this represents a relocation containing bits 0 through 7 of the addr...
Definition: ARMBaseInfo.h:293
llvm::ARMII::MO_LO_8_15
@ MO_LO_8_15
MO_LO_8_15 - On a symbol operand, this represents a relocation containing bits 8 through 15 of the ad...
Definition: ARMBaseInfo.h:299
llvm::ARMII::MO_HI_8_15
@ MO_HI_8_15
MO_HI_8_15 - On a symbol operand, this represents a relocation containing bits 24 through 31 of the a...
Definition: ARMBaseInfo.h:310
llvm::ARMII::MO_HI16
@ MO_HI16
MO_HI16 - On a symbol operand, this represents a relocation containing higher 16 bit of the address.
Definition: ARMBaseInfo.h:254
llvm::ARMII::MO_HI_0_7
@ MO_HI_0_7
MO_HI_0_7 - On a symbol operand, this represents a relocation containing bits 16 through 23 of the ad...
Definition: ARMBaseInfo.h:304
llvm::ARMII::MO_GOT
@ MO_GOT
MO_GOT - On a symbol operand, this represents a GOT relative relocation.
Definition: ARMBaseInfo.h:266
llvm::ARM_AM::getSOImmTwoPartSecond
unsigned getSOImmTwoPartSecond(unsigned V)
getSOImmTwoPartSecond - If V is a value that satisfies isSOImmTwoPartVal, return the second chunk of ...
Definition: ARMAddressingModes.h:185
llvm::ARM_AM::isSOImmTwoPartVal
bool isSOImmTwoPartVal(unsigned V)
isSOImmTwoPartVal - Return true if the specified value can be obtained by or'ing together two SOImmVa...
Definition: ARMAddressingModes.h:166
llvm::ARM_AM::getSORegOpc
unsigned getSORegOpc(ShiftOpc ShOp, unsigned Imm)
Definition: ARMAddressingModes.h:98
llvm::ARM_AM::lsr
@ lsr
Definition: ARMAddressingModes.h:31
llvm::ARM_AM::asr
@ asr
Definition: ARMAddressingModes.h:29
llvm::ARM_AM::rrx
@ rrx
Definition: ARMAddressingModes.h:33
llvm::ARM_AM::getSOImmTwoPartFirst
unsigned getSOImmTwoPartFirst(unsigned V)
getSOImmTwoPartFirst - If V is a value that satisfies isSOImmTwoPartVal, return the first chunk of it...
Definition: ARMAddressingModes.h:179
llvm::CallingConv::ID
unsigned ID
LLVM IR allows to use arbitrary numbers as calling convention identifiers.
Definition: CallingConv.h:24
llvm::MCID::Flag
Flag
These should be considered private to the implementation of the MCInstrDesc class.
Definition: MCInstrDesc.h:148
llvm::RegState::Implicit
@ Implicit
Not emitted register (e.g. carry, or temporary result).
Definition: MachineInstrBuilder.h:47
llvm::RegState::Define
@ Define
Register definition.
Definition: MachineInstrBuilder.h:45
llvm::RegState::Kill
@ Kill
The last use of a register.
Definition: MachineInstrBuilder.h:49
llvm::RegState::Undef
@ Undef
Value of the register doesn't matter.
Definition: MachineInstrBuilder.h:53
llvm::X86Disassembler::Reg
Reg
All possible values of the reg field in the ModR/M byte.
Definition: X86DisassemblerDecoder.h:614
llvm::ms_demangle::IntrinsicFunctionKind::New
@ New
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::drop_begin
auto drop_begin(T &&RangeOrContainer, size_t N=1)
Return a range covering RangeOrContainer with the first N elements excluded.
Definition: STLExtras.h:329
llvm::dump
void dump(const SparseBitVector< ElementSize > &LHS, raw_ostream &out)
Definition: SparseBitVector.h:877
llvm::operator<
bool operator<(int64_t V1, const APSInt &V2)
Definition: APSInt.h:361
llvm::finalizeBundle
void finalizeBundle(MachineBasicBlock &MBB, MachineBasicBlock::instr_iterator FirstMI, MachineBasicBlock::instr_iterator LastMI)
finalizeBundle - Finalize a machine instruction bundle which includes a sequence of instructions star...
Definition: MachineInstrBundle.cpp:123
llvm::all_of
bool all_of(R &&range, UnaryPredicate P)
Provide wrappers to std::all_of which take ranges instead of having to pass begin/end explicitly.
Definition: STLExtras.h:1722
llvm::BuildMI
MachineInstrBuilder BuildMI(MachineFunction &MF, const MIMetadata &MIMD, const MCInstrDesc &MCID)
Builder interface. Specify how to create the initial instruction itself.
Definition: MachineInstrBuilder.h:372
llvm::make_range
iterator_range< T > make_range(T x, T y)
Convenience function for iterating over sub-ranges.
Definition: iterator_range.h:76
llvm::getDeadRegState
unsigned getDeadRegState(bool B)
Definition: MachineInstrBuilder.h:557
llvm::predOps
static std::array< MachineOperand, 2 > predOps(ARMCC::CondCodes Pred, unsigned PredReg=0)
Get the operands corresponding to the given Pred value.
Definition: ARMBaseInstrInfo.h:562
llvm::sort
void sort(IteratorTy Start, IteratorTy End)
Definition: STLExtras.h:1647
llvm::dbgs
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:163
llvm::is_sorted
bool is_sorted(R &&Range, Compare C)
Wrapper function around std::is_sorted to check if elements in a range R are sorted with respect to a...
Definition: STLExtras.h:1902
llvm::getUndefRegState
unsigned getUndefRegState(bool B)
Definition: MachineInstrBuilder.h:560
llvm::getDefRegState
unsigned getDefRegState(bool B)
Definition: MachineInstrBuilder.h:548
llvm::lower_bound
auto lower_bound(R &&Range, T &&Value)
Provide wrappers to std::lower_bound which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1954
llvm::getKillRegState
unsigned getKillRegState(bool B)
Definition: MachineInstrBuilder.h:554
llvm::emitThumbRegPlusImmediate
void emitThumbRegPlusImmediate(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, Register DestReg, Register BaseReg, int NumBytes, const TargetInstrInfo &TII, const ARMBaseRegisterInfo &MRI, unsigned MIFlags=0)
emitThumbRegPlusImmediate - Emits a series of instructions to materialize a destreg = basereg + immed...
Definition: ThumbRegisterInfo.cpp:251
llvm::getInstrPredicate
ARMCC::CondCodes getInstrPredicate(const MachineInstr &MI, Register &PredReg)
getInstrPredicate - If instruction is predicated, returns its predicate condition,...
Definition: ARMBaseInstrInfo.cpp:2232
llvm::getRenamableRegState
unsigned getRenamableRegState(bool B)
Definition: MachineInstrBuilder.h:569
llvm::t1CondCodeOp
static MachineOperand t1CondCodeOp(bool isDead=false)
Get the operand corresponding to the conditional code result for Thumb1.
Definition: ARMBaseInstrInfo.h:577
llvm::computeAndAddLiveIns
void computeAndAddLiveIns(LivePhysRegs &LiveRegs, MachineBasicBlock &MBB)
Convenience function combining computeLiveIns() and addLiveIns().
Definition: LivePhysRegs.cpp:336
llvm::condCodeOp
static MachineOperand condCodeOp(unsigned CCReg=0)
Get the operand corresponding to the conditional code result.
Definition: ARMBaseInstrInfo.h:570
llvm::createARMExpandPseudoPass
FunctionPass * createARMExpandPseudoPass()
createARMExpandPseudoPass - returns an instance of the pseudo instruction expansion pass.
Definition: ARMExpandPseudoInsts.cpp:3277
llvm::gettBLXrOpcode
unsigned gettBLXrOpcode(const MachineFunction &MF)
Definition: ARMBaseInstrInfo.cpp:6740
llvm::getBLXOpcode
unsigned getBLXOpcode(const MachineFunction &MF)
Definition: ARMBaseInstrInfo.cpp:6735
llvm::emitARMRegPlusImmediate
void emitARMRegPlusImmediate(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, Register DestReg, Register BaseReg, int NumBytes, ARMCC::CondCodes Pred, Register PredReg, const ARMBaseInstrInfo &TII, unsigned MIFlags=0)
emitARMRegPlusImmediate / emitT2RegPlusImmediate - Emits a series of instructions to materializea des...
Definition: ARMBaseInstrInfo.cpp:2467
llvm::emitT2RegPlusImmediate
void emitT2RegPlusImmediate(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, Register DestReg, Register BaseReg, int NumBytes, ARMCC::CondCodes Pred, Register PredReg, const ARMBaseInstrInfo &TII, unsigned MIFlags=0)
Definition: Thumb2InstrInfo.cpp:308
llvm::Align
This struct is a compact representation of a valid (non-zero power of two) alignment.
Definition: Alignment.h:39
llvm::Align::value
uint64_t value() const
This is a hole in the type system and should not be abused.
Definition: Alignment.h:85
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