LLVM 18.0.0git
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#include "llvm/Transforms/Utils/SimplifyLibCalls.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/Loads.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/AttributeMask.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/KnownBits.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/Transforms/Utils/BuildLibCalls.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/SizeOpts.h"
#include <cmath>
Go to the source code of this file.
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static cl::opt< bool > | EnableUnsafeFPShrink ("enable-double-float-shrink", cl::Hidden, cl::init(false), cl::desc("Enable unsafe double to float " "shrinking for math lib calls")) |
static cl::opt< bool > | OptimizeHotColdNew ("optimize-hot-cold-new", cl::Hidden, cl::init(false), cl::desc("Enable hot/cold operator new library calls")) |
static cl::opt< unsigned, false, HotColdHintParser > | ColdNewHintValue ("cold-new-hint-value", cl::Hidden, cl::init(1), cl::desc("Value to pass to hot/cold operator new for cold allocation")) |
static cl::opt< unsigned, false, HotColdHintParser > | HotNewHintValue ("hot-new-hint-value", cl::Hidden, cl::init(254), cl::desc("Value to pass to hot/cold operator new for hot allocation")) |
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Definition at line 256 of file SimplifyLibCalls.cpp.
References llvm::CallBase::addParamAttr(), F, llvm::CallBase::getArgOperand(), llvm::CallBase::getCaller(), llvm::Value::getContext(), llvm::CallBase::getParamDereferenceableBytes(), llvm::CallBase::getParamDereferenceableOrNullBytes(), llvm::Type::getPointerAddressSpace(), llvm::Value::getType(), llvm::Attribute::getWithDereferenceableBytes(), llvm::NullPointerIsDefined(), llvm::CallBase::paramHasAttr(), and llvm::CallBase::removeParamAttr().
Referenced by annotateNonNullAndDereferenceable(), and annotateNonNullNoUndefBasedOnAccess().
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Definition at line 303 of file SimplifyLibCalls.cpp.
References annotateDereferenceableBytes(), annotateNonNullNoUndefBasedOnAccess(), DL, llvm::isKnownNonZero(), llvm::PatternMatch::m_APInt(), llvm::PatternMatch::m_Select(), llvm::PatternMatch::m_Value(), llvm::PatternMatch::match(), Size, X, and Y.
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Definition at line 281 of file SimplifyLibCalls.cpp.
References llvm::CallBase::addParamAttr(), annotateDereferenceableBytes(), F, llvm::CallBase::getArgOperand(), llvm::CallBase::getCaller(), llvm::Type::getPointerAddressSpace(), llvm::Value::getType(), llvm::NullPointerIsDefined(), and llvm::CallBase::paramHasAttr().
Referenced by annotateNonNullAndDereferenceable().
Definition at line 109 of file SimplifyLibCalls.cpp.
References llvm::any_of(), and llvm::User::operands().
Definition at line 115 of file SimplifyLibCalls.cpp.
References llvm::any_of(), and llvm::User::operands().
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Definition at line 242 of file SimplifyLibCalls.cpp.
References DL, llvm::Instruction::getFunction(), llvm::Function::hasFnAttribute(), llvm::isDereferenceableAndAlignedPointer(), and isOnlyUsedInComparisonWithZero().
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Definition at line 128 of file SimplifyLibCalls.cpp.
References B, llvm::sampleprof::Base, llvm::ConstantInt::get(), llvm::CallBase::getArgOperand(), llvm::Value::getType(), isDigit(), llvm::maxIntN(), llvm::maxUIntN(), llvm::Offset, RetTy, and llvm::SaturatingMultiplyAdd().
Definition at line 324 of file SimplifyLibCalls.cpp.
References assert(), llvm::CallInst::getTailCallKind(), llvm::CallInst::isMustTailCall(), and llvm::CallInst::isNoTailCall().
Referenced by mergeAttributesAndFlags(), optimizeTrigReflections(), and replaceUnaryCall().
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Definition at line 2205 of file SimplifyLibCalls.cpp.
References B, llvm::sampleprof::Base, F, llvm::Intrinsic::getDeclaration(), and llvm::Value::getType().
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Definition at line 1953 of file SimplifyLibCalls.cpp.
References B, and llvm::BitWidth.
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Definition at line 2130 of file SimplifyLibCalls.cpp.
References B, llvm::emitUnaryFloatFnCall(), llvm::Intrinsic::getDeclaration(), and llvm::hasFloatFn().
Definition at line 92 of file SimplifyLibCalls.cpp.
Referenced by llvm::FortifiedLibCallSimplifier::optimizeCall(), and llvm::LibCallSimplifier::optimizeCall().
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Definition at line 2648 of file SimplifyLibCalls.cpp.
References assert(), B, llvm::BasicBlock::begin(), llvm::StructType::get(), llvm::FixedVectorType::get(), llvm::ConstantInt::get(), llvm::Function::getAttributes(), llvm::TargetLibraryInfo::getLibFunc(), llvm::getOrInsertLibFunc(), llvm::GlobalValue::getParent(), llvm::Module::getTargetTriple(), llvm::Value::getType(), llvm::isLibFuncEmittable(), llvm::Type::isStructTy(), Name, llvm::Triple::x86, and llvm::Triple::x86_64.
Definition at line 230 of file SimplifyLibCalls.cpp.
References llvm::CallingConv::C.
Referenced by canTransformToMemCmp().
Return true if it is only used in equality comparisons with With.
Definition at line 98 of file SimplifyLibCalls.cpp.
Definition at line 2908 of file SimplifyLibCalls.cpp.
References llvm::CallBase::arg_size(), llvm::CallBase::getArgOperand(), llvm::Value::getName(), llvm::LoadInst::getPointerOperand(), and llvm::GlobalValue::isDeclaration().
Definition at line 2641 of file SimplifyLibCalls.cpp.
References llvm::CallBase::doesNotAccessMemory(), and llvm::CallBase::doesNotThrow().
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Definition at line 436 of file SimplifyLibCalls.cpp.
References llvm::And, B, llvm::ConstantInt::get(), llvm::CallBase::getArgOperand(), llvm::Constant::getNullValue(), and llvm::Value::getType().
Definition at line 332 of file SimplifyLibCalls.cpp.
References copyFlags(), llvm::AttributeList::get(), llvm::Value::getContext(), llvm::Value::getType(), llvm::CallBase::removeRetAttrs(), llvm::CallBase::setAttributes(), and llvm::AttributeFuncs::typeIncompatible().
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Shrink double -> float for binary functions.
Definition at line 1878 of file SimplifyLibCalls.cpp.
References B, and optimizeDoubleFP().
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Shrink double -> float functions.
Definition at line 1811 of file SimplifyLibCalls.cpp.
References B, llvm::StringRef::back(), llvm::emitBinaryFloatFnCall(), llvm::emitUnaryFloatFnCall(), llvm::StringRef::empty(), llvm::CallBase::getArgOperand(), llvm::Function::getAttributes(), llvm::CallBase::getCalledFunction(), llvm::Intrinsic::getDeclaration(), llvm::Instruction::getFastMathFlags(), llvm::Instruction::getFunction(), llvm::Function::getIntrinsicID(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::Value::getType(), isBinary(), llvm::Type::isDoubleTy(), llvm::Type::isFloatTy(), llvm::Function::isIntrinsic(), llvm::StringRef::size(), llvm::StringRef::startswith(), llvm::Value::users(), and valueHasFloatPrecision().
Referenced by optimizeBinaryDoubleFP(), and optimizeUnaryDoubleFP().
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Definition at line 1529 of file SimplifyLibCalls.cpp.
References B, llvm::ConstantFoldLoadFromConstPtr(), DL, llvm::IntegerType::get(), llvm::Value::getContext(), llvm::getKnownAlignment(), llvm::Constant::getNullValue(), llvm::Value::getType(), llvm::isOnlyUsedInZeroEqualityComparison(), LHS, and RHS.
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Definition at line 1487 of file SimplifyLibCalls.cpp.
References B, llvm::ConstantInt::get(), llvm::getConstantStringInfo(), llvm::Constant::getNullValue(), llvm::Value::getType(), llvm::CmpInst::ICMP_ULE, LHS, RHS, llvm::StringRef::size(), and Size.
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Definition at line 1914 of file SimplifyLibCalls.cpp.
References B, copyFlags(), llvm::PatternMatch::m_FNeg(), llvm::PatternMatch::m_OneUse(), llvm::PatternMatch::m_Value(), llvm::PatternMatch::match(), and X.
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Shrink double -> float for unary functions.
Definition at line 1871 of file SimplifyLibCalls.cpp.
References B, and optimizeDoubleFP().
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Definition at line 1774 of file SimplifyLibCalls.cpp.
References B, copyFlags(), F, llvm::CallBase::getArgOperand(), llvm::Intrinsic::getDeclaration(), llvm::Instruction::getFastMathFlags(), llvm::Instruction::getModule(), llvm::Value::getType(), and llvm::Value::takeName().
Definition at line 340 of file SimplifyLibCalls.cpp.
Referenced by llvm::StringRef::consume_back(), llvm::StringRef::consume_back_insensitive(), llvm::StringRef::consume_front(), llvm::StringRef::consume_front_insensitive(), llvm::StringRef::drop_back(), llvm::StringRef::drop_front(), llvm::StringRef::drop_until(), llvm::StringRef::drop_while(), llvm::X86TargetLowering::ExpandInlineAsm(), llvm::object::MachOObjectFile::getSectionContents(), llvm::streamFile(), llvm::StringRef::take_until(), and llvm::StringRef::take_while().
Return a variant of Val with float type.
Currently this works in two cases: If Val is an FPExtension of a float value to something bigger, simply return the operand. If Val is a ConstantFP but can be converted to a float ConstantFP without loss of precision do so.
Definition at line 1793 of file SimplifyLibCalls.cpp.
References F, llvm::ConstantFP::get(), llvm::APFloatBase::IEEEsingle(), and llvm::APFloatBase::rmNearestTiesToEven.
Referenced by optimizeDoubleFP().
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Referenced by llvm::LibCallSimplifier::optimizeCall().
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