LLVM 19.0.0git
Macros | Enumerations | Functions | Variables
PPCISelDAGToDAG.cpp File Reference
#include "MCTargetDesc/PPCMCTargetDesc.h"
#include "MCTargetDesc/PPCPredicates.h"
#include "PPC.h"
#include "PPCISelLowering.h"
#include "PPCMachineFunctionInfo.h"
#include "PPCSubtarget.h"
#include "PPCTargetMachine.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/BranchProbabilityInfo.h"
#include "llvm/CodeGen/FunctionLoweringInfo.h"
#include "llvm/CodeGen/ISDOpcodes.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/IntrinsicsPowerPC.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <iterator>
#include <limits>
#include <memory>
#include <new>
#include <tuple>
#include <utility>
#include "PPCGenDAGISel.inc"

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "ppc-isel"
 
#define PASS_NAME   "PowerPC DAG->DAG Pattern Instruction Selection"
 

Enumerations

enum  ICmpInGPRType {
  ICGPR_All , ICGPR_None , ICGPR_I32 , ICGPR_I64 ,
  ICGPR_NonExtIn , ICGPR_Zext , ICGPR_Sext , ICGPR_ZextI32 ,
  ICGPR_SextI32 , ICGPR_ZextI64 , ICGPR_SextI64
}
 

Functions

 STATISTIC (NumSextSetcc, "Number of (sext(setcc)) nodes expanded into GPR sequence.")
 
 STATISTIC (NumZextSetcc, "Number of (zext(setcc)) nodes expanded into GPR sequence.")
 
 STATISTIC (SignExtensionsAdded, "Number of sign extensions for compare inputs added.")
 
 STATISTIC (ZeroExtensionsAdded, "Number of zero extensions for compare inputs added.")
 
 STATISTIC (NumLogicOpsOnComparison, "Number of logical ops on i1 values calculated in GPR.")
 
 STATISTIC (OmittedForNonExtendUses, "Number of compares not eliminated as they have non-extending uses.")
 
 STATISTIC (NumP9Setb, "Number of compares lowered to setb.")
 
static bool hasTocDataAttr (SDValue Val, unsigned PointerSize)
 
static CodeModel::Model getCodeModel (const PPCSubtarget &Subtarget, const TargetMachine &TM, const SDNode *Node)
 
static bool isInt32Immediate (SDNode *N, unsigned &Imm)
 isInt32Immediate - This method tests to see if the node is a 32-bit constant operand.
 
static bool isInt64Immediate (SDNode *N, uint64_t &Imm)
 isInt64Immediate - This method tests to see if the node is a 64-bit constant operand.
 
static bool isInt32Immediate (SDValue N, unsigned &Imm)
 
static bool isInt64Immediate (SDValue N, uint64_t &Imm)
 isInt64Immediate - This method tests to see if the value is a 64-bit constant operand.
 
static unsigned getBranchHint (unsigned PCC, const FunctionLoweringInfo &FuncInfo, const SDValue &DestMBB)
 
static bool isOpcWithIntImmediate (SDNode *N, unsigned Opc, unsigned &Imm)
 
static bool isThreadPointerAcquisitionNode (SDValue Base, SelectionDAG *CurDAG)
 
static bool canOptimizeTLSDFormToXForm (SelectionDAG *CurDAG, SDValue Base)
 
static unsigned allUsesTruncate (SelectionDAG *CurDAG, SDNode *N)
 
static int findContiguousZerosAtLeast (uint64_t Imm, unsigned Num)
 
static SDNodeselectI64ImmDirect (SelectionDAG *CurDAG, const SDLoc &dl, uint64_t Imm, unsigned &InstCnt)
 
static SDNodeselectI64ImmDirectPrefix (SelectionDAG *CurDAG, const SDLoc &dl, uint64_t Imm, unsigned &InstCnt)
 
static SDNodeselectI64Imm (SelectionDAG *CurDAG, const SDLoc &dl, uint64_t Imm, unsigned *InstCnt=nullptr)
 
static SDNodeselectI64Imm (SelectionDAG *CurDAG, SDNode *N)
 
static PPC::Predicate getPredicateForSetCC (ISD::CondCode CC, const EVT &VT, const PPCSubtarget *Subtarget)
 
static unsigned getCRIdxForSetCC (ISD::CondCode CC, bool &Invert)
 getCRIdxForSetCC - Return the index of the condition register field associated with the SetCC condition, and whether or not the field is treated as inverted.
 
static unsigned int getVCmpInst (MVT VecVT, ISD::CondCode CC, bool HasVSX, bool &Swap, bool &Negate)
 
static bool mayUseP9Setb (SDNode *N, const ISD::CondCode &CC, SelectionDAG *DAG, bool &NeedSwapOps, bool &IsUnCmp)
 
static bool isSWTestOp (SDValue N)
 
static bool PeepholePPC64ZExtGather (SDValue Op32, SmallPtrSetImpl< SDNode * > &ToPromote)
 
static bool isVSXSwap (SDValue N)
 
static bool isLaneInsensitive (SDValue N)
 
static void reduceVSXSwap (SDNode *N, SelectionDAG *DAG)
 
static bool hasAIXSmallTLSAttr (SDValue Val)
 
static bool isEligibleToFoldADDIForLocalExecAccesses (SelectionDAG *DAG, SDValue ADDIToFold)
 
static void foldADDIForLocalExecAccesses (SDNode *N, SelectionDAG *DAG)
 

Variables

cl::opt< boolANDIGlueBug ("expose-ppc-andi-glue-bug", cl::desc("expose the ANDI glue bug on PPC"), cl::Hidden)
 
static cl::opt< boolUseBitPermRewriter ("ppc-use-bit-perm-rewriter", cl::init(true), cl::desc("use aggressive ppc isel for bit permutations"), cl::Hidden)
 
static cl::opt< boolBPermRewriterNoMasking ("ppc-bit-perm-rewriter-stress-rotates", cl::desc("stress rotate selection in aggressive ppc isel for " "bit permutations"), cl::Hidden)
 
static cl::opt< boolEnableBranchHint ("ppc-use-branch-hint", cl::init(true), cl::desc("Enable static hinting of branches on ppc"), cl::Hidden)
 
static cl::opt< boolEnableTLSOpt ("ppc-tls-opt", cl::init(true), cl::desc("Enable tls optimization peephole"), cl::Hidden)
 
static cl::opt< ICmpInGPRTypeCmpInGPR ("ppc-gpr-icmps", cl::Hidden, cl::init(ICGPR_All), cl::desc("Specify the types of comparisons to emit GPR-only code for."), cl::values(clEnumValN(ICGPR_None, "none", "Do not modify integer comparisons."), clEnumValN(ICGPR_All, "all", "All possible int comparisons in GPRs."), clEnumValN(ICGPR_I32, "i32", "Only i32 comparisons in GPRs."), clEnumValN(ICGPR_I64, "i64", "Only i64 comparisons in GPRs."), clEnumValN(ICGPR_NonExtIn, "nonextin", "Only comparisons where inputs don't need [sz]ext."), clEnumValN(ICGPR_Zext, "zext", "Only comparisons with zext result."), clEnumValN(ICGPR_ZextI32, "zexti32", "Only i32 comparisons with zext result."), clEnumValN(ICGPR_ZextI64, "zexti64", "Only i64 comparisons with zext result."), clEnumValN(ICGPR_Sext, "sext", "Only comparisons with sext result."), clEnumValN(ICGPR_SextI32, "sexti32", "Only i32 comparisons with sext result."), clEnumValN(ICGPR_SextI64, "sexti64", "Only i64 comparisons with sext result.")))
 

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE   "ppc-isel"

Definition at line 72 of file PPCISelDAGToDAG.cpp.

◆ PASS_NAME

#define PASS_NAME   "PowerPC DAG->DAG Pattern Instruction Selection"

Definition at line 73 of file PPCISelDAGToDAG.cpp.

Enumeration Type Documentation

◆ ICmpInGPRType

Enumerator
ICGPR_All 
ICGPR_None 
ICGPR_I32 
ICGPR_I64 
ICGPR_NonExtIn 
ICGPR_Zext 
ICGPR_Sext 
ICGPR_ZextI32 
ICGPR_SextI32 
ICGPR_ZextI64 
ICGPR_SextI64 

Definition at line 114 of file PPCISelDAGToDAG.cpp.

Function Documentation

◆ allUsesTruncate()

static unsigned allUsesTruncate ( SelectionDAG CurDAG,
SDNode N 
)
static

◆ canOptimizeTLSDFormToXForm()

static bool canOptimizeTLSDFormToXForm ( SelectionDAG CurDAG,
SDValue  Base 
)
static

◆ findContiguousZerosAtLeast()

static int findContiguousZerosAtLeast ( uint64_t  Imm,
unsigned  Num 
)
static

Definition at line 1004 of file PPCISelDAGToDAG.cpp.

References llvm::Hi_32(), and llvm::Lo_32().

Referenced by selectI64ImmDirect().

◆ foldADDIForLocalExecAccesses()

static void foldADDIForLocalExecAccesses ( SDNode N,
SelectionDAG DAG 
)
static

◆ getBranchHint()

static unsigned getBranchHint ( unsigned  PCC,
const FunctionLoweringInfo FuncInfo,
const SDValue DestMBB 
)
static

◆ getCodeModel()

static CodeModel::Model getCodeModel ( const PPCSubtarget Subtarget,
const TargetMachine TM,
const SDNode Node 
)
static

◆ getCRIdxForSetCC()

static unsigned getCRIdxForSetCC ( ISD::CondCode  CC,
bool Invert 
)
static

getCRIdxForSetCC - Return the index of the condition register field associated with the SetCC condition, and whether or not the field is treated as inverted.

That is, lt = 0; ge = 0 inverted.

Definition at line 4318 of file PPCISelDAGToDAG.cpp.

References CC, llvm_unreachable, llvm::ISD::SETEQ, llvm::ISD::SETGE, llvm::ISD::SETGT, llvm::ISD::SETLE, llvm::ISD::SETLT, llvm::ISD::SETNE, llvm::ISD::SETO, llvm::ISD::SETOEQ, llvm::ISD::SETOGE, llvm::ISD::SETOGT, llvm::ISD::SETOLE, llvm::ISD::SETOLT, llvm::ISD::SETONE, llvm::ISD::SETUEQ, llvm::ISD::SETUGE, llvm::ISD::SETUGT, llvm::ISD::SETULE, llvm::ISD::SETULT, llvm::ISD::SETUNE, and llvm::ISD::SETUO.

◆ getPredicateForSetCC()

static PPC::Predicate getPredicateForSetCC ( ISD::CondCode  CC,
const EVT VT,
const PPCSubtarget Subtarget 
)
static

◆ getVCmpInst()

static unsigned int getVCmpInst ( MVT  VecVT,
ISD::CondCode  CC,
bool  HasVSX,
bool Swap,
bool Negate 
)
static

◆ hasAIXSmallTLSAttr()

static bool hasAIXSmallTLSAttr ( SDValue  Val)
static

Definition at line 7562 of file PPCISelDAGToDAG.cpp.

Referenced by isEligibleToFoldADDIForLocalExecAccesses().

◆ hasTocDataAttr()

static bool hasTocDataAttr ( SDValue  Val,
unsigned  PointerSize 
)
static

◆ isEligibleToFoldADDIForLocalExecAccesses()

static bool isEligibleToFoldADDIForLocalExecAccesses ( SelectionDAG DAG,
SDValue  ADDIToFold 
)
static

◆ isInt32Immediate() [1/2]

static bool isInt32Immediate ( SDNode N,
unsigned Imm 
)
static

isInt32Immediate - This method tests to see if the node is a 32-bit constant operand.

If so Imm will receive the 32-bit value.

Definition at line 547 of file PPCISelDAGToDAG.cpp.

References llvm::ISD::Constant, and N.

Referenced by isInt32Immediate(), and isOpcWithIntImmediate().

◆ isInt32Immediate() [2/2]

static bool isInt32Immediate ( SDValue  N,
unsigned Imm 
)
static

Definition at line 567 of file PPCISelDAGToDAG.cpp.

References isInt32Immediate(), and N.

◆ isInt64Immediate() [1/2]

static bool isInt64Immediate ( SDNode N,
uint64_t Imm 
)
static

isInt64Immediate - This method tests to see if the node is a 64-bit constant operand.

If so Imm will receive the 64-bit value.

Definition at line 557 of file PPCISelDAGToDAG.cpp.

References llvm::ISD::Constant, and N.

Referenced by isInt64Immediate().

◆ isInt64Immediate() [2/2]

static bool isInt64Immediate ( SDValue  N,
uint64_t Imm 
)
static

isInt64Immediate - This method tests to see if the value is a 64-bit constant operand.

If so Imm will receive the 64-bit value.

Definition at line 573 of file PPCISelDAGToDAG.cpp.

References isInt64Immediate(), and N.

◆ isLaneInsensitive()

static bool isLaneInsensitive ( SDValue  N)
static

Definition at line 7482 of file PPCISelDAGToDAG.cpp.

References N.

Referenced by reduceVSXSwap().

◆ isOpcWithIntImmediate()

static bool isOpcWithIntImmediate ( SDNode N,
unsigned  Opc,
unsigned Imm 
)
static

Definition at line 631 of file PPCISelDAGToDAG.cpp.

References isInt32Immediate(), and N.

◆ isSWTestOp()

static bool isSWTestOp ( SDValue  N)
static

Definition at line 4811 of file PPCISelDAGToDAG.cpp.

References llvm::PPCISD::FTSQRT, llvm::ISD::INTRINSIC_WO_CHAIN, and N.

◆ isThreadPointerAcquisitionNode()

static bool isThreadPointerAcquisitionNode ( SDValue  Base,
SelectionDAG CurDAG 
)
static

◆ isVSXSwap()

static bool isVSXSwap ( SDValue  N)
static

Definition at line 7462 of file PPCISelDAGToDAG.cpp.

References N.

Referenced by reduceVSXSwap().

◆ mayUseP9Setb()

static bool mayUseP9Setb ( SDNode N,
const ISD::CondCode CC,
SelectionDAG DAG,
bool NeedSwapOps,
bool IsUnCmp 
)
static

◆ PeepholePPC64ZExtGather()

static bool PeepholePPC64ZExtGather ( SDValue  Op32,
SmallPtrSetImpl< SDNode * > &  ToPromote 
)
static

◆ reduceVSXSwap()

static void reduceVSXSwap ( SDNode N,
SelectionDAG DAG 
)
static

◆ selectI64Imm() [1/2]

static SDNode * selectI64Imm ( SelectionDAG CurDAG,
const SDLoc dl,
uint64_t  Imm,
unsigned InstCnt = nullptr 
)
static

◆ selectI64Imm() [2/2]

static SDNode * selectI64Imm ( SelectionDAG CurDAG,
SDNode N 
)
static

◆ selectI64ImmDirect()

static SDNode * selectI64ImmDirect ( SelectionDAG CurDAG,
const SDLoc dl,
uint64_t  Imm,
unsigned InstCnt 
)
static

◆ selectI64ImmDirectPrefix()

static SDNode * selectI64ImmDirectPrefix ( SelectionDAG CurDAG,
const SDLoc dl,
uint64_t  Imm,
unsigned InstCnt 
)
static

◆ STATISTIC() [1/7]

STATISTIC ( NumLogicOpsOnComparison  ,
"Number of logical ops on i1 values calculated in GPR."   
)

◆ STATISTIC() [2/7]

STATISTIC ( NumP9Setb  ,
"Number of compares lowered to setb."   
)

◆ STATISTIC() [3/7]

STATISTIC ( NumSextSetcc  ,
"Number of (sext(setcc)) nodes expanded into GPR sequence."   
)

◆ STATISTIC() [4/7]

STATISTIC ( NumZextSetcc  ,
"Number of (zext(setcc)) nodes expanded into GPR sequence."   
)

◆ STATISTIC() [5/7]

STATISTIC ( OmittedForNonExtendUses  ,
"Number of compares not eliminated as they have non-extending uses."   
)

◆ STATISTIC() [6/7]

STATISTIC ( SignExtensionsAdded  ,
"Number of sign extensions for compare inputs added."   
)

◆ STATISTIC() [7/7]

STATISTIC ( ZeroExtensionsAdded  ,
"Number of zero extensions for compare inputs added."   
)

Variable Documentation

◆ ANDIGlueBug

cl::opt< bool > ANDIGlueBug("expose-ppc-andi-glue-bug", cl::desc("expose the ANDI glue bug on PPC"), cl::Hidden) ( "expose-ppc-andi-glue-bug"  ,
cl::desc("expose the ANDI glue bug on PPC")  ,
cl::Hidden   
)

◆ BPermRewriterNoMasking

cl::opt< bool > BPermRewriterNoMasking("ppc-bit-perm-rewriter-stress-rotates", cl::desc("stress rotate selection in aggressive ppc isel for " "bit permutations"), cl::Hidden) ( "ppc-bit-perm-rewriter-stress-rotates"  ,
cl::desc("stress rotate selection in aggressive ppc isel for " "bit permutations")  ,
cl::Hidden   
)
static

◆ CmpInGPR

cl::opt< ICmpInGPRType > CmpInGPR("ppc-gpr-icmps", cl::Hidden, cl::init(ICGPR_All), cl::desc("Specify the types of comparisons to emit GPR-only code for."), cl::values(clEnumValN(ICGPR_None, "none", "Do not modify integer comparisons."), clEnumValN(ICGPR_All, "all", "All possible int comparisons in GPRs."), clEnumValN(ICGPR_I32, "i32", "Only i32 comparisons in GPRs."), clEnumValN(ICGPR_I64, "i64", "Only i64 comparisons in GPRs."), clEnumValN(ICGPR_NonExtIn, "nonextin", "Only comparisons where inputs don't need [sz]ext."), clEnumValN(ICGPR_Zext, "zext", "Only comparisons with zext result."), clEnumValN(ICGPR_ZextI32, "zexti32", "Only i32 comparisons with zext result."), clEnumValN(ICGPR_ZextI64, "zexti64", "Only i64 comparisons with zext result."), clEnumValN(ICGPR_Sext, "sext", "Only comparisons with sext result."), clEnumValN(ICGPR_SextI32, "sexti32", "Only i32 comparisons with sext result."), clEnumValN(ICGPR_SextI64, "sexti64", "Only i64 comparisons with sext result."))) ( "ppc-gpr-icmps"  ,
cl::Hidden  ,
cl::init(ICGPR_All ,
cl::desc("Specify the types of comparisons to emit GPR-only code for.")  ,
cl::values(clEnumValN(ICGPR_None, "none", "Do not modify integer comparisons."), clEnumValN(ICGPR_All, "all", "All possible int comparisons in GPRs."), clEnumValN(ICGPR_I32, "i32", "Only i32 comparisons in GPRs."), clEnumValN(ICGPR_I64, "i64", "Only i64 comparisons in GPRs."), clEnumValN(ICGPR_NonExtIn, "nonextin", "Only comparisons where inputs don't need [sz]ext."), clEnumValN(ICGPR_Zext, "zext", "Only comparisons with zext result."), clEnumValN(ICGPR_ZextI32, "zexti32", "Only i32 comparisons with zext result."), clEnumValN(ICGPR_ZextI64, "zexti64", "Only i64 comparisons with zext result."), clEnumValN(ICGPR_Sext, "sext", "Only comparisons with sext result."), clEnumValN(ICGPR_SextI32, "sexti32", "Only i32 comparisons with sext result."), clEnumValN(ICGPR_SextI64, "sexti64", "Only i64 comparisons with sext result."))   
)
static

◆ EnableBranchHint

cl::opt< bool > EnableBranchHint("ppc-use-branch-hint", cl::init(true), cl::desc("Enable static hinting of branches on ppc"), cl::Hidden) ( "ppc-use-branch-hint"  ,
cl::init(true ,
cl::desc("Enable static hinting of branches on ppc")  ,
cl::Hidden   
)
static

◆ EnableTLSOpt

cl::opt< bool > EnableTLSOpt("ppc-tls-opt", cl::init(true), cl::desc("Enable tls optimization peephole"), cl::Hidden) ( "ppc-tls-opt"  ,
cl::init(true ,
cl::desc("Enable tls optimization peephole")  ,
cl::Hidden   
)
static

◆ UseBitPermRewriter

cl::opt< bool > UseBitPermRewriter("ppc-use-bit-perm-rewriter", cl::init(true), cl::desc("use aggressive ppc isel for bit permutations"), cl::Hidden) ( "ppc-use-bit-perm-rewriter"  ,
cl::init(true ,
cl::desc("use aggressive ppc isel for bit permutations")  ,
cl::Hidden   
)
static