X86FixupVectorConstants.cpp File Reference

#include "X86.h"
#include "X86InstrFoldTables.h"
#include "X86InstrInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineConstantPool.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "x86-fixup-vector-constants"

Functions
	STATISTIC (NumInstChanges, "Number of instructions changes")
static std::optional< APInt >	extractConstantBits (const Constant *C)
static std::optional< APInt >	extractConstantBits (const Constant *C, unsigned NumBits)
static std::optional< APInt >	getSplatableConstant (const Constant *C, unsigned SplatBitWidth)
static Constant *	rebuildConstant (LLVMContext &Ctx, Type *SclTy, const APInt &Bits, unsigned NumSclBits)
static Constant *	rebuildSplatCst (const Constant *C, unsigned, unsigned, unsigned SplatBitWidth)
static Constant *	rebuildZeroUpperCst (const Constant *C, unsigned NumBits, unsigned, unsigned ScalarBitWidth)
static Constant *	rebuildExtCst (const Constant *C, bool IsSExt, unsigned NumBits, unsigned NumElts, unsigned SrcEltBitWidth)
static Constant *	rebuildSExtCst (const Constant *C, unsigned NumBits, unsigned NumElts, unsigned SrcEltBitWidth)
static Constant *	rebuildZExtCst (const Constant *C, unsigned NumBits, unsigned NumElts, unsigned SrcEltBitWidth)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "x86-fixup-vector-constants"

Definition at line 27 of file X86FixupVectorConstants.cpp.

Function Documentation

extractConstantBits() [1/2]

static std::optional< APInt > extractConstantBits ( const Constant *  C )

static

Definition at line 68 of file X86FixupVectorConstants.cpp.

References assert(), llvm::CallingConv::C, extractConstantBits(), llvm::User::getOperand(), llvm::APInt::getSplat(), llvm::APInt::getZero(), and I.

Referenced by extractConstantBits(), getSplatableConstant(), rebuildExtCst(), and rebuildZeroUpperCst().

extractConstantBits() [2/2]

static std::optional< APInt > extractConstantBits ( const Constant *  C, unsigned  NumBits  )

static

Definition at line 124 of file X86FixupVectorConstants.cpp.

References llvm::CallingConv::C, and extractConstantBits().

getSplatableConstant()

static std::optional< APInt > getSplatableConstant ( const Constant *  C, unsigned  SplatBitWidth  )

static

Definition at line 133 of file X86FixupVectorConstants.cpp.

References assert(), llvm::CallingConv::C, extractConstantBits(), llvm::Constant::getAggregateElement(), llvm::Type::getPrimitiveSizeInBits(), llvm::Type::getScalarSizeInBits(), llvm::APInt::getZero(), I, Idx, and llvm::APInt::insertBits().

Referenced by rebuildSplatCst().

rebuildConstant()

static Constant * rebuildConstant ( LLVMContext &  Ctx, Type *  SclTy, const APInt &  Bits, unsigned  NumSclBits  )

static

Definition at line 186 of file X86FixupVectorConstants.cpp.

References assert(), llvm::BitWidth, llvm::ConstantDataVector::get(), llvm::ConstantDataVector::getFP(), I, llvm::Type::is16bitFPTy(), llvm::Type::isDoubleTy(), llvm::Type::isFloatTy(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by rebuildExtCst(), rebuildSplatCst(), and rebuildZeroUpperCst().

rebuildExtCst()

static Constant * rebuildExtCst ( const Constant *  C, bool  IsSExt, unsigned  NumBits, unsigned  NumElts, unsigned  SrcEltBitWidth  )

static

Definition at line 275 of file X86FixupVectorConstants.cpp.

References assert(), llvm::CallingConv::C, extractConstantBits(), llvm::APInt::getActiveBits(), llvm::Type::getContext(), llvm::Type::getScalarType(), llvm::APInt::getSignificantBits(), llvm::APInt::getZero(), I, llvm::APInt::insertBits(), rebuildConstant(), and llvm::APInt::trunc().

Referenced by rebuildSExtCst(), and rebuildZExtCst().

rebuildSExtCst()

static Constant * rebuildSExtCst ( const Constant *  C, unsigned  NumBits, unsigned  NumElts, unsigned  SrcEltBitWidth  )

static

Definition at line 305 of file X86FixupVectorConstants.cpp.

References llvm::CallingConv::C, and rebuildExtCst().

rebuildSplatCst()

static Constant * rebuildSplatCst ( const Constant *  C, unsigned  , unsigned  , unsigned  SplatBitWidth  )

static

Definition at line 227 of file X86FixupVectorConstants.cpp.

References llvm::CallingConv::C, llvm::Type::getPrimitiveSizeInBits(), getSplatableConstant(), rebuildConstant(), and llvm::Splat.

rebuildZeroUpperCst()

static Constant * rebuildZeroUpperCst ( const Constant *  C, unsigned  NumBits, unsigned  , unsigned  ScalarBitWidth  )

static

Definition at line 249 of file X86FixupVectorConstants.cpp.

References llvm::CallingConv::C, extractConstantBits(), llvm::Type::getPrimitiveSizeInBits(), and rebuildConstant().

rebuildZExtCst()

static Constant * rebuildZExtCst ( const Constant *  C, unsigned  NumBits, unsigned  NumElts, unsigned  SrcEltBitWidth  )

static

Definition at line 309 of file X86FixupVectorConstants.cpp.

References llvm::CallingConv::C, and rebuildExtCst().

STATISTIC()

STATISTIC	(	NumInstChanges	,
		"Number of instructions changes"
	)