AArch64RegisterBankInfo.cpp File Reference

This file implements the targeting of the RegisterBankInfo class for AArch64. More...

#include "AArch64RegisterBankInfo.h"
#include "AArch64RegisterInfo.h"
#include "AArch64Subtarget.h"
#include "MCTargetDesc/AArch64AddressingModes.h"
#include "MCTargetDesc/AArch64MCTargetDesc.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/GlobalISel/GenericMachineInstrs.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "llvm/CodeGen/LowLevelTypeUtils.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/MachineSizeOpts.h"
#include "llvm/CodeGen/RegisterBank.h"
#include "llvm/CodeGen/RegisterBankInfo.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/IntrinsicsAArch64.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Threading.h"
#include <cassert>
#include "AArch64GenRegisterBank.inc"
#include "AArch64GenRegisterBankInfo.def"

Go to the source code of this file.

Macros
#define	GET_TARGET_REGBANK_IMPL
#define	CHECK_PARTIALMAP(Idx, ValStartIdx, ValLength, RB)
#define	CHECK_VALUEMAP_IMPL(RBName, Size, Offset)
#define	CHECK_VALUEMAP(RBName, Size)
#define	CHECK_VALUEMAP_3OPS(RBName, Size)
#define	CHECK_VALUEMAP_CROSSREGCPY(RBNameDst, RBNameSrc, Size)
#define	CHECK_VALUEMAP_FPEXT(DstSize, SrcSize)

Functions
static bool	preferGPRForFPImm (const MachineInstr &MI, const MachineRegisterInfo &MRI, const AArch64Subtarget &STI)
static bool	foldTruncOfI32Constant (MachineInstr &MI, unsigned OpIdx, MachineRegisterInfo &MRI, const AArch64RegisterBankInfo &RBI)
static bool	isFPIntrinsic (const MachineRegisterInfo &MRI, const MachineInstr &MI)

Variables
static const unsigned	CustomMappingID = 1

Detailed Description

This file implements the targeting of the RegisterBankInfo class for AArch64.

Todo

This should be generated by TableGen.

Definition in file AArch64RegisterBankInfo.cpp.

Macro Definition Documentation

CHECK_PARTIALMAP

#define CHECK_PARTIALMAP	(		Idx,
			ValStartIdx,
			ValLength,
			RB )

Value:

  do {                                                                         \
    assert(                                                                    \
        checkPartialMap(PartialMappingIdx::Idx, ValStartIdx, ValLength, RB) && \
        #Idx " is incorrectly initialized");                                   \
  } while (false)

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo().

CHECK_VALUEMAP

#define CHECK_VALUEMAP	(		RBName,
			Size )

Value:

CHECK_VALUEMAP_IMPL(RBName, Size, 0)

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo().

CHECK_VALUEMAP_3OPS

#define CHECK_VALUEMAP_3OPS	(		RBName,
			Size )

Value:

  do {                                                                         \
    CHECK_VALUEMAP_IMPL(RBName, Size, 0);                                      \
    CHECK_VALUEMAP_IMPL(RBName, Size, 1);                                      \
    CHECK_VALUEMAP_IMPL(RBName, Size, 2);                                      \
  } while (false)

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo().

CHECK_VALUEMAP_CROSSREGCPY

#define CHECK_VALUEMAP_CROSSREGCPY	(		RBNameDst,
			RBNameSrc,
			Size )

Value:

  do {                                                                         \
    unsigned PartialMapDstIdx = PMI_##RBNameDst##Size - PMI_Min;               \
    unsigned PartialMapSrcIdx = PMI_##RBNameSrc##Size - PMI_Min;               \
    (void)PartialMapDstIdx;                                                    \
    (void)PartialMapSrcIdx;                                                    \
    const ValueMapping *Map = getCopyMapping(AArch64::RBNameDst##RegBankID,    \
                                             AArch64::RBNameSrc##RegBankID,    \
                                             TypeSize::getFixed(Size));        \
    (void)Map;                                                                 \
    assert(Map[0].BreakDown ==                                                 \
               &AArch64GenRegisterBankInfo::PartMappings[PartialMapDstIdx] &&  \
           Map[0].NumBreakDowns == 1 &&                                        \
           #RBNameDst #Size " Dst is incorrectly initialized");                \
    assert(Map[1].BreakDown ==                                                 \
               &AArch64GenRegisterBankInfo::PartMappings[PartialMapSrcIdx] &&  \
           Map[1].NumBreakDowns == 1 &&                                        \
           #RBNameSrc #Size " Src is incorrectly initialized");                \
                                                                               \
  } while (false)

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo().

CHECK_VALUEMAP_FPEXT

#define CHECK_VALUEMAP_FPEXT	(		DstSize,
			SrcSize )

Value:

  do {                                                                         \
    unsigned PartialMapDstIdx = PMI_FPR##DstSize - PMI_Min;                    \
    unsigned PartialMapSrcIdx = PMI_FPR##SrcSize - PMI_Min;                    \
    (void)PartialMapDstIdx;                                                    \
    (void)PartialMapSrcIdx;                                                    \
    const ValueMapping *Map = getFPExtMapping(DstSize, SrcSize);               \
    (void)Map;                                                                 \
    assert(Map[0].BreakDown ==                                                 \
               &AArch64GenRegisterBankInfo::PartMappings[PartialMapDstIdx] &&  \
           Map[0].NumBreakDowns == 1 && "FPR" #DstSize                         \
                                        " Dst is incorrectly initialized");    \
    assert(Map[1].BreakDown ==                                                 \
               &AArch64GenRegisterBankInfo::PartMappings[PartialMapSrcIdx] &&  \
           Map[1].NumBreakDowns == 1 && "FPR" #SrcSize                         \
                                        " Src is incorrectly initialized");    \
                                                                               \
  } while (false)

Referenced by llvm::AArch64RegisterBankInfo::AArch64RegisterBankInfo().

CHECK_VALUEMAP_IMPL

#define CHECK_VALUEMAP_IMPL	(		RBName,
			Size,
			Offset )

Value:

  do {                                                                         \
    assert(checkValueMapImpl(PartialMappingIdx::PMI_##RBName##Size,            \
                             PartialMappingIdx::PMI_First##RBName, Size,       \
                             Offset) &&                                        \
           #RBName #Size " " #Offset " is incorrectly initialized");           \
  } while (false)

GET_TARGET_REGBANK_IMPL

#define GET_TARGET_REGBANK_IMPL

Definition at line 42 of file AArch64RegisterBankInfo.cpp.

Function Documentation

foldTruncOfI32Constant()

bool foldTruncOfI32Constant ( MachineInstr & MI, unsigned OpIdx, MachineRegisterInfo & MRI, const AArch64RegisterBankInfo & RBI )

static

Definition at line 407 of file AArch64RegisterBankInfo.cpp.

References llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::RegisterBankInfo::getRegBank(), llvm::LLT::getSizeInBits(), llvm::LLT::isScalar(), MI, MRI, and OpIdx.

isFPIntrinsic()

bool isFPIntrinsic ( const MachineRegisterInfo & MRI, const MachineInstr & MI )

static

Returns

true if a given intrinsic only uses and defines FPRs.

Definition at line 592 of file AArch64RegisterBankInfo.cpp.

References llvm::cast(), getIntrinsicID(), MI, and MRI.

preferGPRForFPImm()

bool preferGPRForFPImm ( const MachineInstr & MI, const MachineRegisterInfo & MRI, const AArch64Subtarget & STI )

static

Definition at line 365 of file AArch64RegisterBankInfo.cpp.

References assert(), llvm::EVT::getFloatingPointVT(), llvm::APInt::getSplat(), llvm::AArch64Subtarget::getTargetLowering(), llvm::APInt::getZExtValue(), llvm::AArch64_AM::isAdvSIMDModImmType4(), llvm::AArch64TargetLowering::isFPImmLegal(), llvm::AArch64TargetLowering::isFPImmLegalAsFMov(), MI, MRI, llvm::shouldOptimizeForSize(), and Size.

Referenced by llvm::AArch64RegisterBankInfo::getInstrMapping().

Variable Documentation

CustomMappingID

const unsigned CustomMappingID = 1

static

Definition at line 49 of file AArch64RegisterBankInfo.cpp.

Referenced by getGprbOrCustomMapping(), llvm::AArch64RegisterBankInfo::getInstrMapping(), and llvm::MipsRegisterBankInfo::getInstrMapping().