LLVM
15.0.0git
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#include "llvm/Transforms/Scalar/CorrelatedValuePropagation.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/DomTreeUpdater.h"
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/Analysis/LazyValueInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/ConstantRange.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/Local.h"
#include <cassert>
#include <utility>
Go to the source code of this file.
Macros | |
#define | DEBUG_TYPE "correlated-value-propagation" |
Enumerations | |
enum | Domain { Domain::NonNegative, Domain::NonPositive, Domain::Unknown } |
Functions | |
STATISTIC (NumPhis, "Number of phis propagated") | |
STATISTIC (NumPhiCommon, "Number of phis deleted via common incoming value") | |
STATISTIC (NumSelects, "Number of selects propagated") | |
STATISTIC (NumMemAccess, "Number of memory access targets propagated") | |
STATISTIC (NumCmps, "Number of comparisons propagated") | |
STATISTIC (NumReturns, "Number of return values propagated") | |
STATISTIC (NumDeadCases, "Number of switch cases removed") | |
STATISTIC (NumSDivSRemsNarrowed, "Number of sdivs/srems whose width was decreased") | |
STATISTIC (NumSDivs, "Number of sdiv converted to udiv") | |
STATISTIC (NumUDivURemsNarrowed, "Number of udivs/urems whose width was decreased") | |
STATISTIC (NumAShrsConverted, "Number of ashr converted to lshr") | |
STATISTIC (NumAShrsRemoved, "Number of ashr removed") | |
STATISTIC (NumSRems, "Number of srem converted to urem") | |
STATISTIC (NumSExt, "Number of sext converted to zext") | |
STATISTIC (NumSICmps, "Number of signed icmp preds simplified to unsigned") | |
STATISTIC (NumAnd, "Number of ands removed") | |
STATISTIC (NumNW, "Number of no-wrap deductions") | |
STATISTIC (NumNSW, "Number of no-signed-wrap deductions") | |
STATISTIC (NumNUW, "Number of no-unsigned-wrap deductions") | |
STATISTIC (NumAddNW, "Number of no-wrap deductions for add") | |
STATISTIC (NumAddNSW, "Number of no-signed-wrap deductions for add") | |
STATISTIC (NumAddNUW, "Number of no-unsigned-wrap deductions for add") | |
STATISTIC (NumSubNW, "Number of no-wrap deductions for sub") | |
STATISTIC (NumSubNSW, "Number of no-signed-wrap deductions for sub") | |
STATISTIC (NumSubNUW, "Number of no-unsigned-wrap deductions for sub") | |
STATISTIC (NumMulNW, "Number of no-wrap deductions for mul") | |
STATISTIC (NumMulNSW, "Number of no-signed-wrap deductions for mul") | |
STATISTIC (NumMulNUW, "Number of no-unsigned-wrap deductions for mul") | |
STATISTIC (NumShlNW, "Number of no-wrap deductions for shl") | |
STATISTIC (NumShlNSW, "Number of no-signed-wrap deductions for shl") | |
STATISTIC (NumShlNUW, "Number of no-unsigned-wrap deductions for shl") | |
STATISTIC (NumAbs, "Number of llvm.abs intrinsics removed") | |
STATISTIC (NumOverflows, "Number of overflow checks removed") | |
STATISTIC (NumSaturating, "Number of saturating arithmetics converted to normal arithmetics") | |
STATISTIC (NumNonNull, "Number of function pointer arguments marked non-null") | |
STATISTIC (NumMinMax, "Number of llvm.[us]{min,max} intrinsics removed") | |
INITIALIZE_PASS_BEGIN (CorrelatedValuePropagation, "correlated-propagation", "Value Propagation", false, false) INITIALIZE_PASS_END(CorrelatedValuePropagation | |
static bool | processSelect (SelectInst *S, LazyValueInfo *LVI) |
static bool | simplifyCommonValuePhi (PHINode *P, LazyValueInfo *LVI, DominatorTree *DT) |
Try to simplify a phi with constant incoming values that match the edge values of a non-constant value on all other edges: bb0: isnull = icmp eq i8* x, null br i1 isnull, label bb2, label bb1 bb1: br label bb2 bb2: r = phi i8* [ x, bb1 ], [ null, bb0 ] --> r = x. More... | |
static Value * | getValueOnEdge (LazyValueInfo *LVI, Value *Incoming, BasicBlock *From, BasicBlock *To, Instruction *CxtI) |
static bool | processPHI (PHINode *P, LazyValueInfo *LVI, DominatorTree *DT, const SimplifyQuery &SQ) |
static bool | processMemAccess (Instruction *I, LazyValueInfo *LVI) |
static bool | processICmp (ICmpInst *Cmp, LazyValueInfo *LVI) |
static bool | constantFoldCmp (CmpInst *Cmp, LazyValueInfo *LVI) |
See if LazyValueInfo's ability to exploit edge conditions or range information is sufficient to prove this comparison. More... | |
static bool | processCmp (CmpInst *Cmp, LazyValueInfo *LVI) |
static bool | processSwitch (SwitchInst *I, LazyValueInfo *LVI, DominatorTree *DT) |
Simplify a switch instruction by removing cases which can never fire. More... | |
static bool | willNotOverflow (BinaryOpIntrinsic *BO, LazyValueInfo *LVI) |
static void | setDeducedOverflowingFlags (Value *V, Instruction::BinaryOps Opcode, bool NewNSW, bool NewNUW) |
static bool | processBinOp (BinaryOperator *BinOp, LazyValueInfo *LVI) |
static bool | processAbsIntrinsic (IntrinsicInst *II, LazyValueInfo *LVI) |
static bool | processMinMaxIntrinsic (MinMaxIntrinsic *MM, LazyValueInfo *LVI) |
static bool | processOverflowIntrinsic (WithOverflowInst *WO, LazyValueInfo *LVI) |
static bool | processSaturatingInst (SaturatingInst *SI, LazyValueInfo *LVI) |
static bool | processCallSite (CallBase &CB, LazyValueInfo *LVI) |
Infer nonnull attributes for the arguments at the specified callsite. More... | |
static bool | isNonNegative (Value *V, LazyValueInfo *LVI, Instruction *CxtI) |
static bool | isNonPositive (Value *V, LazyValueInfo *LVI, Instruction *CxtI) |
Domain | getDomain (Value *V, LazyValueInfo *LVI, Instruction *CxtI) |
static bool | narrowSDivOrSRem (BinaryOperator *Instr, LazyValueInfo *LVI) |
Try to shrink a sdiv/srem's width down to the smallest power of two that's sufficient to contain its operands. More... | |
static bool | processUDivOrURem (BinaryOperator *Instr, LazyValueInfo *LVI) |
Try to shrink a udiv/urem's width down to the smallest power of two that's sufficient to contain its operands. More... | |
static bool | processSRem (BinaryOperator *SDI, LazyValueInfo *LVI) |
static bool | processSDiv (BinaryOperator *SDI, LazyValueInfo *LVI) |
See if LazyValueInfo's ability to exploit edge conditions or range information is sufficient to prove the signs of both operands of this SDiv. More... | |
static bool | processSDivOrSRem (BinaryOperator *Instr, LazyValueInfo *LVI) |
static bool | processAShr (BinaryOperator *SDI, LazyValueInfo *LVI) |
static bool | processSExt (SExtInst *SDI, LazyValueInfo *LVI) |
static bool | processAnd (BinaryOperator *BinOp, LazyValueInfo *LVI) |
static Constant * | getConstantAt (Value *V, Instruction *At, LazyValueInfo *LVI) |
static bool | runImpl (Function &F, LazyValueInfo *LVI, DominatorTree *DT, const SimplifyQuery &SQ) |
Variables | |
static cl::opt< bool > | CanonicalizeICmpPredicatesToUnsigned ("canonicalize-icmp-predicates-to-unsigned", cl::init(true), cl::Hidden, cl::desc("Enables canonicalization of signed relational predicates to " "unsigned (e.g. sgt => ugt)")) |
correlated | propagation |
correlated Value | Propagation |
correlated Value | false |
#define DEBUG_TYPE "correlated-value-propagation" |
Definition at line 51 of file CorrelatedValuePropagation.cpp.
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strong |
Enumerator | |
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NonNegative | |
NonPositive | |
Unknown |
Definition at line 710 of file CorrelatedValuePropagation.cpp.
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See if LazyValueInfo's ability to exploit edge conditions or range information is sufficient to prove this comparison.
Even for local conditions, this can sometimes prove conditions instcombine can't by exploiting range information.
Definition at line 341 of file CorrelatedValuePropagation.cpp.
References llvm::ConstantInt::get(), llvm::Type::getInt1Ty(), llvm::LazyValueInfo::getPredicateAt(), and llvm::LazyValueInfo::Unknown.
Referenced by processCmp().
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Definition at line 1056 of file CorrelatedValuePropagation.cpp.
References llvm::LazyValueInfo::getConstant(), llvm::ConstantInt::getFalse(), llvm::LazyValueInfo::getPredicateAt(), llvm::ConstantInt::getTrue(), llvm::LazyValueInfo::True, and llvm::LazyValueInfo::Unknown.
Referenced by runImpl().
Domain getDomain | ( | Value * | V, |
LazyValueInfo * | LVI, | ||
Instruction * | CxtI | ||
) |
Definition at line 712 of file CorrelatedValuePropagation.cpp.
References isNonNegative(), isNonPositive(), NonNegative, NonPositive, and Unknown.
Referenced by collectMDInDomain(), llvm::MDNode::getMostGenericAliasScope(), processSDiv(), and processSRem().
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Definition at line 216 of file CorrelatedValuePropagation.cpp.
References llvm::LazyValueInfo::False, From, llvm::LazyValueInfo::getConstantOnEdge(), llvm::LazyValueInfo::getPredicateOnEdge(), llvm::Value::getType(), llvm::CmpInst::ICMP_EQ, llvm::Type::isVectorTy(), and SI.
Referenced by processPHI().
INITIALIZE_PASS_BEGIN | ( | CorrelatedValuePropagation | , |
"correlated-propagation" | , | ||
"Value Propagation" | , | ||
false | , | ||
false | |||
) |
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Definition at line 696 of file CorrelatedValuePropagation.cpp.
References llvm::ConstantInt::get(), llvm::LazyValueInfo::getPredicateAt(), llvm::Value::getType(), llvm::CmpInst::ICMP_SGE, and llvm::LazyValueInfo::True.
Referenced by llvm::ConstantRange::ashr(), getDomain(), llvm::APInt::isNegatedPowerOf2(), llvm::APSInt::isStrictlyPositive(), llvm::APInt::isStrictlyPositive(), processAShr(), and processSExt().
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Definition at line 703 of file CorrelatedValuePropagation.cpp.
References llvm::ConstantInt::get(), llvm::LazyValueInfo::getPredicateAt(), llvm::Value::getType(), llvm::CmpInst::ICMP_SLE, and llvm::LazyValueInfo::True.
Referenced by getDomain().
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Try to shrink a sdiv/srem's width down to the smallest power of two that's sufficient to contain its operands.
Definition at line 722 of file CorrelatedValuePropagation.cpp.
References assert(), B, contains(), llvm::Instruction::eraseFromParent(), llvm::APInt::getAllOnes(), llvm::LazyValueInfo::getConstantRange(), llvm::Value::getContext(), llvm::Type::getIntegerBitWidth(), llvm::Type::getIntNTy(), llvm::Value::getName(), llvm::BinaryOperator::getOpcode(), llvm::User::getOperand(), llvm::APInt::getSignedMinValue(), llvm::Value::getType(), I, llvm::Instruction::isExact(), llvm::Type::isVectorTy(), LHS, llvm::max(), llvm::User::operands(), llvm::PowerOf2Ceil(), llvm::Value::replaceAllUsesWith(), RHS, and llvm::zip().
Referenced by processSDivOrSRem().
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Definition at line 501 of file CorrelatedValuePropagation.cpp.
References assert(), B, llvm::Instruction::eraseFromParent(), llvm::LazyValueInfo::False, llvm::ConstantInt::get(), llvm::CallBase::getArgOperand(), llvm::Value::getContext(), llvm::Value::getName(), llvm::Constant::getNullValue(), llvm::LazyValueInfo::getPredicateAt(), llvm::Type::getScalarSizeInBits(), llvm::APInt::getSignedMinValue(), llvm::ConstantInt::getTrue(), processBinOp(), llvm::Value::replaceAllUsesWith(), llvm::CallBase::setArgOperand(), llvm::LazyValueInfo::True, llvm::LazyValueInfo::Unknown, and X.
Referenced by processCallSite().
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Definition at line 1031 of file CorrelatedValuePropagation.cpp.
References llvm::Instruction::eraseFromParent(), llvm::LazyValueInfo::getConstantRange(), llvm::User::getOperand(), llvm::Value::getType(), llvm::ConstantRange::getUnsignedMax(), llvm::Type::isVectorTy(), LHS, llvm::Value::replaceAllUsesWith(), RHS, and llvm::APInt::ule().
Referenced by runImpl().
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Definition at line 943 of file CorrelatedValuePropagation.cpp.
References llvm::ConstantRange::contains(), llvm::Instruction::eraseFromParent(), llvm::LazyValueInfo::getConstantRange(), llvm::Instruction::getDebugLoc(), llvm::Type::getIntegerBitWidth(), llvm::User::getOperand(), llvm::Value::getType(), llvm::Instruction::isExact(), isNonNegative(), llvm::Type::isVectorTy(), and llvm::Value::replaceAllUsesWith().
Referenced by runImpl().
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Definition at line 993 of file CorrelatedValuePropagation.cpp.
References llvm::ConstantRange::contains(), llvm::LazyValueInfo::getConstantRange(), llvm::BinaryOperator::getOpcode(), llvm::User::getOperand(), llvm::Value::getType(), llvm::Instruction::hasNoSignedWrap(), llvm::Instruction::hasNoUnsignedWrap(), llvm::Type::isVectorTy(), LHS, llvm::ConstantRange::makeGuaranteedNoWrapRegion(), RHS, and setDeducedOverflowingFlags().
Referenced by processAbsIntrinsic(), processOverflowIntrinsic(), processSaturatingInst(), and runImpl().
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Infer nonnull attributes for the arguments at the specified callsite.
Definition at line 619 of file CorrelatedValuePropagation.cpp.
References llvm::abs(), llvm::AttributeList::addParamAttribute(), llvm::CallBase::arg_size(), llvm::CallBase::args(), assert(), llvm::LazyValueInfo::False, llvm::Use::get(), llvm::Attribute::get(), llvm::ConstantPointerNull::get(), llvm::CallBase::getAttributes(), llvm::LazyValueInfo::getConstant(), llvm::Value::getContext(), llvm::CallBase::getIntrinsicID(), llvm::CallBase::getOperandBundle(), llvm::LazyValueInfo::getPredicateAt(), llvm::Value::getType(), llvm::CmpInst::ICMP_EQ, llvm::Type::isVectorTy(), llvm::LLVMContext::OB_deopt, llvm::CallBase::paramHasAttr(), processAbsIntrinsic(), processMinMaxIntrinsic(), processOverflowIntrinsic(), processSaturatingInst(), llvm::Use::set(), llvm::CallBase::setAttributes(), SI, and willNotOverflow().
Referenced by runImpl().
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Definition at line 360 of file CorrelatedValuePropagation.cpp.
References constantFoldCmp(), and processICmp().
Referenced by runImpl().
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Definition at line 311 of file CorrelatedValuePropagation.cpp.
References CanonicalizeICmpPredicatesToUnsigned, llvm::LazyValueInfo::getConstantRange(), and llvm::ConstantRange::getEquivalentPredWithFlippedSignedness().
Referenced by processCmp().
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Definition at line 294 of file CorrelatedValuePropagation.cpp.
References llvm::LazyValueInfo::getConstant(), and I.
Referenced by runImpl().
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Definition at line 558 of file CorrelatedValuePropagation.cpp.
References llvm::Instruction::eraseFromParent(), llvm::MinMaxIntrinsic::getLHS(), llvm::CmpInst::getNonStrictPredicate(), llvm::User::getOperand(), llvm::MinMaxIntrinsic::getPredicate(), llvm::LazyValueInfo::getPredicateAt(), llvm::MinMaxIntrinsic::getRHS(), llvm::Value::replaceAllUsesWith(), and llvm::LazyValueInfo::Unknown.
Referenced by processCallSite().
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Definition at line 572 of file CorrelatedValuePropagation.cpp.
References B, llvm::Instruction::eraseFromParent(), llvm::ConstantStruct::get(), llvm::UndefValue::get(), llvm::BinaryOpIntrinsic::getBinaryOp(), llvm::ConstantInt::getFalse(), llvm::BinaryOpIntrinsic::getLHS(), llvm::Value::getName(), llvm::BinaryOpIntrinsic::getRHS(), llvm::Value::getType(), llvm::BinaryOpIntrinsic::isSigned(), processBinOp(), llvm::Value::replaceAllUsesWith(), setDeducedOverflowingFlags(), and llvm::ARM_MB::ST.
Referenced by processCallSite().
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Definition at line 263 of file CorrelatedValuePropagation.cpp.
References BB, llvm::numbers::e, getValueOnEdge(), i, P, simplifyCommonValuePhi(), and llvm::SimplifyInstruction().
Referenced by runImpl().
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Definition at line 598 of file CorrelatedValuePropagation.cpp.
References llvm::BinaryOperator::Create(), processBinOp(), llvm::Instruction::setDebugLoc(), setDeducedOverflowingFlags(), and SI.
Referenced by processCallSite().
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See if LazyValueInfo's ability to exploit edge conditions or range information is sufficient to prove the signs of both operands of this SDiv.
If this is the case, replace the SDiv with a UDiv. Even for local conditions, this can sometimes prove conditions instcombine can't by exploiting range information.
Definition at line 874 of file CorrelatedValuePropagation.cpp.
References assert(), llvm::BinaryOperator::CreateNeg(), D, llvm::Instruction::eraseFromParent(), llvm::Instruction::getDebugLoc(), getDomain(), llvm::Value::getName(), llvm::BinaryOperator::getOpcode(), llvm::Value::getType(), I, llvm::Instruction::isExact(), llvm::Type::isVectorTy(), NonNegative, llvm::User::operands(), processUDivOrURem(), llvm::Value::replaceAllUsesWith(), Unknown, and llvm::zip().
Referenced by processSDivOrSRem().
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Definition at line 926 of file CorrelatedValuePropagation.cpp.
References assert(), llvm::BinaryOperator::getOpcode(), llvm::Value::getType(), llvm::Type::isVectorTy(), narrowSDivOrSRem(), processSDiv(), and processSRem().
Referenced by runImpl().
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Definition at line 135 of file CorrelatedValuePropagation.cpp.
References llvm::LazyValueInfo::getConstant(), llvm::ConstantInt::isOne(), and S.
Referenced by runImpl().
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Definition at line 974 of file CorrelatedValuePropagation.cpp.
References llvm::sampleprof::Base, llvm::CastInst::CreateZExtOrBitCast(), llvm::Instruction::eraseFromParent(), llvm::Instruction::getDebugLoc(), llvm::User::getOperand(), llvm::Value::getType(), isNonNegative(), llvm::Type::isVectorTy(), and llvm::Value::replaceAllUsesWith().
Referenced by runImpl().
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Definition at line 818 of file CorrelatedValuePropagation.cpp.
References assert(), llvm::BinaryOperator::CreateNeg(), D, llvm::Instruction::eraseFromParent(), llvm::Instruction::getDebugLoc(), getDomain(), llvm::Value::getName(), llvm::BinaryOperator::getOpcode(), llvm::Value::getType(), I, llvm::Type::isVectorTy(), NonNegative, NonPositive, llvm::User::operands(), processUDivOrURem(), llvm::Value::replaceAllUsesWith(), Unknown, and llvm::zip().
Referenced by processSDivOrSRem().
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Simplify a switch instruction by removing cases which can never fire.
If the uselessness of a case could be determined locally then constant propagation would already have figured it out. Instead, walk the predecessors and statically evaluate cases based on information available on that edge. Cases that cannot fire no matter what the incoming edge can safely be removed. If a case fires on every incoming edge then the entire switch can be removed and replaced with a branch to the case destination.
Definition at line 378 of file CorrelatedValuePropagation.cpp.
References llvm::DomTreeUpdater::applyUpdatesPermissive(), BB, Cond, llvm::ConstantFoldTerminator(), llvm::DominatorTreeBase< BasicBlock, false >::Delete, llvm::LazyValueInfo::False, llvm::LazyValueInfo::getPredicateAt(), I, llvm::CmpInst::ICMP_EQ, llvm::DomTreeUpdater::Lazy, llvm::BasicBlock::removePredecessor(), SI, llvm::successors(), and llvm::LazyValueInfo::True.
Referenced by llvm::PredicateInfoBuilder::buildPredicateInfo(), and runImpl().
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Try to shrink a udiv/urem's width down to the smallest power of two that's sufficient to contain its operands.
Definition at line 776 of file CorrelatedValuePropagation.cpp.
References assert(), B, llvm::Instruction::eraseFromParent(), llvm::ConstantRange::getActiveBits(), llvm::LazyValueInfo::getConstantRange(), llvm::Value::getContext(), llvm::Type::getIntegerBitWidth(), llvm::Type::getIntNTy(), llvm::Value::getName(), llvm::BinaryOperator::getOpcode(), llvm::User::getOperand(), llvm::Value::getType(), llvm::Instruction::isExact(), llvm::Type::isVectorTy(), LHS, llvm::max(), llvm::User::operands(), llvm::PowerOf2Ceil(), llvm::Value::replaceAllUsesWith(), and RHS.
Referenced by processSDiv(), processSRem(), and runImpl().
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Definition at line 1079 of file CorrelatedValuePropagation.cpp.
References llvm::MCID::Add, BB, llvm::MCID::Call, llvm::depth_first(), F, getConstantAt(), llvm::SPII::Load, llvm::make_early_inc_range(), Mul, processAnd(), processAShr(), processBinOp(), processCallSite(), processCmp(), processMemAccess(), processPHI(), processSDivOrSRem(), processSelect(), processSExt(), processSwitch(), processUDivOrURem(), llvm::MipsISD::Ret, llvm::MCID::Select, llvm::SPII::Store, and llvm::M68kBeads::Term.
Referenced by llvm::CorrelatedValuePropagationPass::run().
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Definition at line 449 of file CorrelatedValuePropagation.cpp.
References llvm::MCID::Add, llvm_unreachable, and Mul.
Referenced by processBinOp(), processOverflowIntrinsic(), and processSaturatingInst().
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Try to simplify a phi with constant incoming values that match the edge values of a non-constant value on all other edges: bb0: isnull = icmp eq i8* x, null br i1 isnull, label bb2, label bb1 bb1: br label bb2 bb2: r = phi i8* [ x, bb1 ], [ null, bb0 ] --> r = x.
Definition at line 165 of file CorrelatedValuePropagation.cpp.
References llvm::DominatorTree::dominates(), llvm::numbers::e, llvm::LazyValueInfo::getConstantOnEdge(), i, llvm::isGuaranteedNotToBePoison(), and P.
Referenced by processPHI().
STATISTIC | ( | NumAbs | , |
"Number of llvm.abs intrinsics removed" | |||
) |
STATISTIC | ( | NumCmps | , |
"Number of comparisons propagated" | |||
) |
STATISTIC | ( | NumMinMax | , |
"Number of llvm.{min,max} intrinsics removed" | [us] | ||
) |
STATISTIC | ( | NumPhiCommon | , |
"Number of phis deleted via common incoming value" | |||
) |
STATISTIC | ( | NumPhis | , |
"Number of phis propagated" | |||
) |
STATISTIC | ( | NumSDivSRemsNarrowed | , |
"Number of sdivs/srems whose width was decreased" | |||
) |
STATISTIC | ( | NumSelects | , |
"Number of selects propagated" | |||
) |
STATISTIC | ( | NumUDivURemsNarrowed | , |
"Number of udivs/urems whose width was decreased" | |||
) |
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Definition at line 441 of file CorrelatedValuePropagation.cpp.
References llvm::ConstantRange::contains(), llvm::BinaryOpIntrinsic::getBinaryOp(), llvm::LazyValueInfo::getConstantRange(), llvm::BinaryOpIntrinsic::getLHS(), llvm::BinaryOpIntrinsic::getNoWrapKind(), llvm::BinaryOpIntrinsic::getRHS(), and llvm::ConstantRange::makeGuaranteedNoWrapRegion().
Referenced by processCallSite().
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Referenced by processICmp().
correlated Value false |
Definition at line 128 of file CorrelatedValuePropagation.cpp.
correlated propagation |
Definition at line 127 of file CorrelatedValuePropagation.cpp.
correlated Value Propagation |
Definition at line 128 of file CorrelatedValuePropagation.cpp.