LLVM 17.0.0git
Macros | Functions | Variables
AMDGPUInstructionSelector.cpp File Reference

This file implements the targeting of the InstructionSelector class for AMDGPU. More...

#include "AMDGPUInstructionSelector.h"
#include "AMDGPU.h"
#include "AMDGPUGlobalISelUtils.h"
#include "AMDGPUInstrInfo.h"
#include "AMDGPURegisterBankInfo.h"
#include "AMDGPUTargetMachine.h"
#include "SIMachineFunctionInfo.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "llvm/CodeGen/GlobalISel/GISelKnownBits.h"
#include "llvm/CodeGen/GlobalISel/InstructionSelectorImpl.h"
#include "llvm/CodeGen/GlobalISel/MIPatternMatch.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/IntrinsicsAMDGPU.h"
#include <optional>
#include "AMDGPUGenGlobalISel.inc"
Include dependency graph for AMDGPUInstructionSelector.cpp:

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "amdgpu-isel"
 
#define GET_GLOBALISEL_IMPL
 
#define AMDGPUSubtarget   GCNSubtarget
 
#define GET_GLOBALISEL_PREDICATES_INIT
 
#define GET_GLOBALISEL_TEMPORARIES_INIT
 

Functions

static unsigned getLogicalBitOpcode (unsigned Opc, bool Is64)
 
static int getV_CMPOpcode (CmpInst::Predicate P, unsigned Size, const GCNSubtarget &ST)
 
static unsigned gwsIntrinToOpcode (unsigned IntrID)
 
static bool parseTexFail (uint64_t TexFailCtrl, bool &TFE, bool &LWE, bool &IsTexFail)
 
static int sizeToSubRegIndex (unsigned Size)
 
static bool shouldUseAndMask (unsigned Size, unsigned &Mask)
 
static bool isConstant (const MachineInstr &MI)
 
static bool isVCmpResult (Register Reg, MachineRegisterInfo &MRI)
 
static std::pair< Register, unsigned > computeIndirectRegIndex (MachineRegisterInfo &MRI, const SIRegisterInfo &TRI, const TargetRegisterClass *SuperRC, Register IdxReg, unsigned EltSize, GISelKnownBits &KnownBits)
 Return the register to use for the index value, and the subregister to use for the indirectly accessed register.
 
static Register matchZeroExtendFromS32 (MachineRegisterInfo &MRI, Register Reg)
 Match a zero extend from a 32-bit value to 64-bits.
 
static Register getWaveAddress (const MachineInstr *Def)
 
static void addZeroImm (MachineInstrBuilder &MIB)
 
static Register buildRSRC (MachineIRBuilder &B, MachineRegisterInfo &MRI, uint32_t FormatLo, uint32_t FormatHi, Register BasePtr)
 Return a resource descriptor for use with an arbitrary 64-bit pointer.
 
static Register buildAddr64RSrc (MachineIRBuilder &B, MachineRegisterInfo &MRI, const SIInstrInfo &TII, Register BasePtr)
 
static Register buildOffsetSrc (MachineIRBuilder &B, MachineRegisterInfo &MRI, const SIInstrInfo &TII, Register BasePtr)
 
static std::optional< uint64_t > getConstantZext32Val (Register Reg, const MachineRegisterInfo &MRI)
 Get an immediate that must be 32-bits, and treated as zero extended.
 
static MachineInstr * stripBitCast (MachineInstr *MI, MachineRegisterInfo &MRI)
 
static MachineInstr * isExtractHiElt (MachineInstr *Inst, MachineRegisterInfo &MRI)
 

Variables

static cl::opt< bool > AllowRiskySelect ("amdgpu-global-isel-risky-select", cl::desc("Allow GlobalISel to select cases that are likely to not work yet"), cl::init(false), cl::ReallyHidden)
 

Detailed Description

This file implements the targeting of the InstructionSelector class for AMDGPU.

Todo:
This should be generated by TableGen.

Definition in file AMDGPUInstructionSelector.cpp.

Macro Definition Documentation

◆ AMDGPUSubtarget

#define AMDGPUSubtarget   GCNSubtarget

Definition at line 43 of file AMDGPUInstructionSelector.cpp.

◆ DEBUG_TYPE

#define DEBUG_TYPE   "amdgpu-isel"

Definition at line 31 of file AMDGPUInstructionSelector.cpp.

◆ GET_GLOBALISEL_IMPL

#define GET_GLOBALISEL_IMPL

Definition at line 42 of file AMDGPUInstructionSelector.cpp.

◆ GET_GLOBALISEL_PREDICATES_INIT

#define GET_GLOBALISEL_PREDICATES_INIT

◆ GET_GLOBALISEL_TEMPORARIES_INIT

#define GET_GLOBALISEL_TEMPORARIES_INIT

Function Documentation

◆ addZeroImm()

static void addZeroImm ( MachineInstrBuilder &  MIB)
static

Definition at line 4446 of file AMDGPUInstructionSelector.cpp.

References llvm::MachineInstrBuilder::addImm().

◆ buildAddr64RSrc()

static Register buildAddr64RSrc ( MachineIRBuilder &  B,
MachineRegisterInfo &  MRI,
const SIInstrInfo &  TII,
Register  BasePtr 
)
static

Definition at line 4495 of file AMDGPUInstructionSelector.cpp.

References B, buildRSRC(), llvm::Hi_32(), MRI, and TII.

◆ buildOffsetSrc()

static Register buildOffsetSrc ( MachineIRBuilder &  B,
MachineRegisterInfo &  MRI,
const SIInstrInfo &  TII,
Register  BasePtr 
)
static

Definition at line 4504 of file AMDGPUInstructionSelector.cpp.

References B, buildRSRC(), llvm::Hi_32(), MRI, and TII.

◆ buildRSRC()

static Register buildRSRC ( MachineIRBuilder &  B,
MachineRegisterInfo &  MRI,
uint32_t  FormatLo,
uint32_t  FormatHi,
Register  BasePtr 
)
static

Return a resource descriptor for use with an arbitrary 64-bit pointer.

If BasePtr is not valid, a null base pointer will be used.

Definition at line 4452 of file AMDGPUInstructionSelector.cpp.

References B, and MRI.

Referenced by buildAddr64RSrc(), and buildOffsetSrc().

◆ computeIndirectRegIndex()

static std::pair< Register, unsigned > computeIndirectRegIndex ( MachineRegisterInfo &  MRI,
const SIRegisterInfo &  TRI,
const TargetRegisterClass *  SuperRC,
Register  IdxReg,
unsigned  EltSize,
GISelKnownBits &  KnownBits 
)
static

Return the register to use for the index value, and the subregister to use for the indirectly accessed register.

Definition at line 2846 of file AMDGPUInstructionSelector.cpp.

References assert(), llvm::AMDGPU::getBaseWithConstantOffset(), MRI, llvm::Offset, llvm::ArrayRef< T >::size(), and TRI.

◆ getConstantZext32Val()

static std::optional< uint64_t > getConstantZext32Val ( Register  Reg,
const MachineRegisterInfo &  MRI 
)
static

Get an immediate that must be 32-bits, and treated as zero extended.

Definition at line 4767 of file AMDGPUInstructionSelector.cpp.

References llvm::getIConstantVRegSExtVal(), llvm::Lo_32(), and MRI.

◆ getLogicalBitOpcode()

static unsigned getLogicalBitOpcode ( unsigned  Opc,
bool  Is64 
)
static

Definition at line 271 of file AMDGPUInstructionSelector.cpp.

References llvm_unreachable.

◆ getV_CMPOpcode()

static int getV_CMPOpcode ( CmpInst::Predicate  P,
unsigned  Size,
const GCNSubtarget &  ST 
)
static

Definition at line 1075 of file AMDGPUInstructionSelector.cpp.

References llvm::CmpInst::FCMP_FALSE, llvm::CmpInst::FCMP_OEQ, llvm::CmpInst::FCMP_OGE, llvm::CmpInst::FCMP_OGT, llvm::CmpInst::FCMP_OLE, llvm::CmpInst::FCMP_OLT, llvm::CmpInst::FCMP_ONE, llvm::CmpInst::FCMP_ORD, llvm::CmpInst::FCMP_TRUE, llvm::CmpInst::FCMP_UEQ, llvm::CmpInst::FCMP_UGE, llvm::CmpInst::FCMP_UGT, llvm::CmpInst::FCMP_ULE, llvm::CmpInst::FCMP_ULT, llvm::CmpInst::FCMP_UNE, llvm::CmpInst::FCMP_UNO, llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_SGE, llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLE, llvm::CmpInst::ICMP_SLT, llvm::CmpInst::ICMP_UGE, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULE, llvm::CmpInst::ICMP_ULT, llvm_unreachable, P, Select, and Size.

◆ getWaveAddress()

static Register getWaveAddress ( const MachineInstr *  Def)
static

Definition at line 4268 of file AMDGPUInstructionSelector.cpp.

◆ gwsIntrinToOpcode()

static unsigned gwsIntrinToOpcode ( unsigned  IntrID)
static

Definition at line 1522 of file AMDGPUInstructionSelector.cpp.

References llvm_unreachable.

◆ isConstant()

static bool isConstant ( const MachineInstr &  MI)
static

Definition at line 2554 of file AMDGPUInstructionSelector.cpp.

References MI.

Referenced by arePointersCompatible(), llvm::buildModuleSummaryIndex(), llvm::MDBuilder::createTBAANode(), llvm::HexagonInstrInfo::expandPostRAPseudo(), and getMemcpyLoadsAndStores().

◆ isExtractHiElt()

static MachineInstr * isExtractHiElt ( MachineInstr *  Inst,
MachineRegisterInfo &  MRI 
)
static

Definition at line 4836 of file AMDGPUInstructionSelector.cpp.

References assert(), llvm::LLT::fixed_vector(), llvm::getDefIgnoringCopies(), llvm::getIConstantVRegValWithLookThrough(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::getShuffleMask(), LHS, MRI, and stripBitCast().

◆ isVCmpResult()

static bool isVCmpResult ( Register  Reg,
MachineRegisterInfo &  MRI 
)
static

Definition at line 2645 of file AMDGPUInstructionSelector.cpp.

References isVCmpResult(), MI, and MRI.

Referenced by isVCmpResult().

◆ matchZeroExtendFromS32()

static Register matchZeroExtendFromS32 ( MachineRegisterInfo &  MRI,
Register  Reg 
)
static

Match a zero extend from a 32-bit value to 64-bits.

Definition at line 3113 of file AMDGPUInstructionSelector.cpp.

References assert(), llvm::getDefIgnoringCopies(), llvm::MIPatternMatch::m_GZExt(), llvm::MIPatternMatch::m_Reg(), llvm::PatternMatch::m_ZeroInt(), llvm::MIPatternMatch::mi_match(), MRI, and llvm::LLT::scalar().

◆ parseTexFail()

static bool parseTexFail ( uint64_t  TexFailCtrl,
bool &  TFE,
bool &  LWE,
bool &  IsTexFail 
)
static

Definition at line 1677 of file AMDGPUInstructionSelector.cpp.

◆ shouldUseAndMask()

static bool shouldUseAndMask ( unsigned  Size,
unsigned &  Mask 
)
static
Returns
true if a bitmask for Size bits will be an inline immediate.

Definition at line 2214 of file AMDGPUInstructionSelector.cpp.

References Size.

◆ sizeToSubRegIndex()

static int sizeToSubRegIndex ( unsigned  Size)
static

Definition at line 2072 of file AMDGPUInstructionSelector.cpp.

References llvm::bit_ceil(), Size, and sizeToSubRegIndex().

Referenced by sizeToSubRegIndex().

◆ stripBitCast()

static MachineInstr * stripBitCast ( MachineInstr *  MI,
MachineRegisterInfo &  MRI 
)
static

Definition at line 4828 of file AMDGPUInstructionSelector.cpp.

References llvm::getDefIgnoringCopies(), MI, and MRI.

Referenced by isExtractHiElt().

Variable Documentation

◆ AllowRiskySelect

cl::opt< bool > AllowRiskySelect("amdgpu-global-isel-risky-select", cl::desc("Allow GlobalISel to select cases that are likely to not work yet"), cl::init(false), cl::ReallyHidden) ( "amdgpu-global-isel-risky-select"  ,
cl::desc("Allow GlobalISel to select cases that are likely to not work yet")  ,
cl::init(false)  ,
cl::ReallyHidden   
)
static
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