llvm/lib/Transforms/Scalar/Scalar.cpp
Joerg Sonnenberger 3d72b70842 Split the SimplifyCFG pass into two variants.
The first variant contains all current transformations except
transforming switches into lookup tables. The second variant
contains all current transformations.

The switch-to-lookup-table conversion results in code that is more
difficult to analyze and optimize by other passes. Most importantly,
it can inhibit Dead Code Elimination. As such it is often beneficial to
only apply this transformation very late. A common example is inlining,
which can often result in range restrictions for the switch expression.

Changes in execution time according to LNT:
SingleSource/Benchmarks/Misc/fp-convert +3.03%
MultiSource/Benchmarks/ASC_Sequoia/CrystalMk/CrystalMk -11.20%
MultiSource/Benchmarks/Olden/perimeter/perimeter -10.43%
and a couple of smaller changes. For perimeter it also results 2.6%
a smaller binary.

Differential Revision: https://reviews.llvm.org/D30333


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298799 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-26 06:44:08 +00:00

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9.0 KiB
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//===-- Scalar.cpp --------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements common infrastructure for libLLVMScalarOpts.a, which
// implements several scalar transformations over the LLVM intermediate
// representation, including the C bindings for that library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Scalar.h"
#include "llvm-c/Initialization.h"
#include "llvm-c/Transforms/Scalar.h"
#include "llvm/Analysis/BasicAliasAnalysis.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/Analysis/ScopedNoAliasAA.h"
#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
#include "llvm/Transforms/Scalar/GVN.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Verifier.h"
#include "llvm/InitializePasses.h"
#include "llvm/IR/LegacyPassManager.h"
using namespace llvm;
/// initializeScalarOptsPasses - Initialize all passes linked into the
/// ScalarOpts library.
void llvm::initializeScalarOpts(PassRegistry &Registry) {
initializeADCELegacyPassPass(Registry);
initializeBDCELegacyPassPass(Registry);
initializeAlignmentFromAssumptionsPass(Registry);
initializeConstantHoistingLegacyPassPass(Registry);
initializeConstantPropagationPass(Registry);
initializeCorrelatedValuePropagationPass(Registry);
initializeDCELegacyPassPass(Registry);
initializeDeadInstEliminationPass(Registry);
initializeScalarizerPass(Registry);
initializeDSELegacyPassPass(Registry);
initializeGuardWideningLegacyPassPass(Registry);
initializeGVNLegacyPassPass(Registry);
initializeNewGVNLegacyPassPass(Registry);
initializeEarlyCSELegacyPassPass(Registry);
initializeEarlyCSEMemSSALegacyPassPass(Registry);
initializeGVNHoistLegacyPassPass(Registry);
initializeFlattenCFGPassPass(Registry);
initializeInductiveRangeCheckEliminationPass(Registry);
initializeIndVarSimplifyLegacyPassPass(Registry);
initializeInferAddressSpacesPass(Registry);
initializeJumpThreadingPass(Registry);
initializeLegacyLICMPassPass(Registry);
initializeLegacyLoopSinkPassPass(Registry);
initializeLoopDataPrefetchLegacyPassPass(Registry);
initializeLoopDeletionLegacyPassPass(Registry);
initializeLoopAccessLegacyAnalysisPass(Registry);
initializeLoopInstSimplifyLegacyPassPass(Registry);
initializeLoopInterchangePass(Registry);
initializeLoopPredicationLegacyPassPass(Registry);
initializeLoopRotateLegacyPassPass(Registry);
initializeLoopStrengthReducePass(Registry);
initializeLoopRerollPass(Registry);
initializeLoopUnrollPass(Registry);
initializeLoopUnswitchPass(Registry);
initializeLoopVersioningLICMPass(Registry);
initializeLoopIdiomRecognizeLegacyPassPass(Registry);
initializeLowerAtomicLegacyPassPass(Registry);
initializeLowerExpectIntrinsicPass(Registry);
initializeLowerGuardIntrinsicLegacyPassPass(Registry);
initializeMemCpyOptLegacyPassPass(Registry);
initializeMergedLoadStoreMotionLegacyPassPass(Registry);
initializeNaryReassociateLegacyPassPass(Registry);
initializePartiallyInlineLibCallsLegacyPassPass(Registry);
initializeReassociateLegacyPassPass(Registry);
initializeRegToMemPass(Registry);
initializeRewriteStatepointsForGCPass(Registry);
initializeSCCPLegacyPassPass(Registry);
initializeIPSCCPLegacyPassPass(Registry);
initializeSROALegacyPassPass(Registry);
initializeCFGSimplifyPassPass(Registry);
initializeLateCFGSimplifyPassPass(Registry);
initializeStructurizeCFGPass(Registry);
initializeSinkingLegacyPassPass(Registry);
initializeTailCallElimPass(Registry);
initializeSeparateConstOffsetFromGEPPass(Registry);
initializeSpeculativeExecutionLegacyPassPass(Registry);
initializeStraightLineStrengthReducePass(Registry);
initializeLoadCombinePass(Registry);
initializePlaceBackedgeSafepointsImplPass(Registry);
initializePlaceSafepointsPass(Registry);
initializeFloat2IntLegacyPassPass(Registry);
initializeLoopDistributeLegacyPass(Registry);
initializeLoopLoadEliminationPass(Registry);
initializeLoopSimplifyCFGLegacyPassPass(Registry);
initializeLoopVersioningPassPass(Registry);
}
void LLVMInitializeScalarOpts(LLVMPassRegistryRef R) {
initializeScalarOpts(*unwrap(R));
}
void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createAggressiveDCEPass());
}
void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createBitTrackingDCEPass());
}
void LLVMAddAlignmentFromAssumptionsPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createAlignmentFromAssumptionsPass());
}
void LLVMAddCFGSimplificationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createCFGSimplificationPass());
}
void LLVMAddLateCFGSimplificationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLateCFGSimplificationPass());
}
void LLVMAddDeadStoreEliminationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createDeadStoreEliminationPass());
}
void LLVMAddScalarizerPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createScalarizerPass());
}
void LLVMAddGVNPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createGVNPass());
}
void LLVMAddNewGVNPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createNewGVNPass());
}
void LLVMAddMergedLoadStoreMotionPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createMergedLoadStoreMotionPass());
}
void LLVMAddIndVarSimplifyPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createIndVarSimplifyPass());
}
void LLVMAddInstructionCombiningPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createInstructionCombiningPass());
}
void LLVMAddJumpThreadingPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createJumpThreadingPass());
}
void LLVMAddLoopSinkPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopSinkPass());
}
void LLVMAddLICMPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLICMPass());
}
void LLVMAddLoopDeletionPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopDeletionPass());
}
void LLVMAddLoopIdiomPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopIdiomPass());
}
void LLVMAddLoopRotatePass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopRotatePass());
}
void LLVMAddLoopRerollPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopRerollPass());
}
void LLVMAddLoopSimplifyCFGPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopSimplifyCFGPass());
}
void LLVMAddLoopUnrollPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopUnrollPass());
}
void LLVMAddLoopUnswitchPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopUnswitchPass());
}
void LLVMAddMemCpyOptPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createMemCpyOptPass());
}
void LLVMAddPartiallyInlineLibCallsPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createPartiallyInlineLibCallsPass());
}
void LLVMAddLowerSwitchPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLowerSwitchPass());
}
void LLVMAddPromoteMemoryToRegisterPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createPromoteMemoryToRegisterPass());
}
void LLVMAddReassociatePass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createReassociatePass());
}
void LLVMAddSCCPPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createSCCPPass());
}
void LLVMAddScalarReplAggregatesPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createSROAPass());
}
void LLVMAddScalarReplAggregatesPassSSA(LLVMPassManagerRef PM) {
unwrap(PM)->add(createSROAPass());
}
void LLVMAddScalarReplAggregatesPassWithThreshold(LLVMPassManagerRef PM,
int Threshold) {
unwrap(PM)->add(createSROAPass());
}
void LLVMAddSimplifyLibCallsPass(LLVMPassManagerRef PM) {
// NOTE: The simplify-libcalls pass has been removed.
}
void LLVMAddTailCallEliminationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createTailCallEliminationPass());
}
void LLVMAddConstantPropagationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createConstantPropagationPass());
}
void LLVMAddDemoteMemoryToRegisterPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createDemoteRegisterToMemoryPass());
}
void LLVMAddVerifierPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createVerifierPass());
}
void LLVMAddCorrelatedValuePropagationPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createCorrelatedValuePropagationPass());
}
void LLVMAddEarlyCSEPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createEarlyCSEPass(false/*=UseMemorySSA*/));
}
void LLVMAddEarlyCSEMemSSAPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createEarlyCSEPass(true/*=UseMemorySSA*/));
}
void LLVMAddGVNHoistLegacyPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createGVNHoistPass());
}
void LLVMAddTypeBasedAliasAnalysisPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createTypeBasedAAWrapperPass());
}
void LLVMAddScopedNoAliasAAPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createScopedNoAliasAAWrapperPass());
}
void LLVMAddBasicAliasAnalysisPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createBasicAAWrapperPass());
}
void LLVMAddLowerExpectIntrinsicPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLowerExpectIntrinsicPass());
}