Geoff Berry 87f8d25150 [MachineCopyPropagation] Extend pass to do COPY source forwarding
This change extends MachineCopyPropagation to do COPY source forwarding.

This change also extends the MachineCopyPropagation pass to be able to
be run during register allocation, after physical registers have been
assigned, but before the virtual registers have been re-written, which
allows it to remove virtual register COPY LiveIntervals that become dead
through the forwarding of all of their uses.

Reviewers: qcolombet, javed.absar, MatzeB, jonpa

Subscribers: jyknight, nemanjai, llvm-commits, nhaehnle, mcrosier, mgorny

Differential Revision: https://reviews.llvm.org/D30751

llvm-svn: 311038
2017-08-16 20:50:01 +00:00

109 lines
4.4 KiB
C++

//===-- CodeGen.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 the common initialization routines for the
// CodeGen library.
//
//===----------------------------------------------------------------------===//
#include "llvm-c/Initialization.h"
#include "llvm/InitializePasses.h"
#include "llvm/PassRegistry.h"
using namespace llvm;
/// initializeCodeGen - Initialize all passes linked into the CodeGen library.
void llvm::initializeCodeGen(PassRegistry &Registry) {
initializeAtomicExpandPass(Registry);
initializeBranchCoalescingPass(Registry);
initializeBranchFolderPassPass(Registry);
initializeBranchRelaxationPass(Registry);
initializeCodeGenPreparePass(Registry);
initializeCountingFunctionInserterPass(Registry);
initializeDeadMachineInstructionElimPass(Registry);
initializeDetectDeadLanesPass(Registry);
initializeDwarfEHPreparePass(Registry);
initializeEarlyIfConverterPass(Registry);
initializeExpandISelPseudosPass(Registry);
initializeExpandPostRAPass(Registry);
initializeFEntryInserterPass(Registry);
initializeFinalizeMachineBundlesPass(Registry);
initializeFuncletLayoutPass(Registry);
initializeGCMachineCodeAnalysisPass(Registry);
initializeGCModuleInfoPass(Registry);
initializeIfConverterPass(Registry);
initializeImplicitNullChecksPass(Registry);
initializeInterleavedAccessPass(Registry);
initializeLiveDebugValuesPass(Registry);
initializeLiveDebugVariablesPass(Registry);
initializeLiveIntervalsPass(Registry);
initializeLiveRangeShrinkPass(Registry);
initializeLiveStacksPass(Registry);
initializeLiveVariablesPass(Registry);
initializeLocalStackSlotPassPass(Registry);
initializeLowerIntrinsicsPass(Registry);
initializeMachineBlockFrequencyInfoPass(Registry);
initializeMachineBlockPlacementPass(Registry);
initializeMachineBlockPlacementStatsPass(Registry);
initializeMachineCSEPass(Registry);
initializeMachineCombinerPass(Registry);
initializeMachineCopyPropagationPass(Registry);
initializeMachineCopyPropagationPreRegRewritePass(Registry);
initializeMachineDominatorTreePass(Registry);
initializeMachineFunctionPrinterPassPass(Registry);
initializeMachineLICMPass(Registry);
initializeMachineLoopInfoPass(Registry);
initializeMachineModuleInfoPass(Registry);
initializeMachineOptimizationRemarkEmitterPassPass(Registry);
initializeMachineOutlinerPass(Registry);
initializeMachinePipelinerPass(Registry);
initializeMachinePostDominatorTreePass(Registry);
initializeMachineRegionInfoPassPass(Registry);
initializeMachineSchedulerPass(Registry);
initializeMachineSinkingPass(Registry);
initializeMachineVerifierPassPass(Registry);
initializeOptimizePHIsPass(Registry);
initializePEIPass(Registry);
initializePHIEliminationPass(Registry);
initializePatchableFunctionPass(Registry);
initializePeepholeOptimizerPass(Registry);
initializePostMachineSchedulerPass(Registry);
initializePostRAHazardRecognizerPass(Registry);
initializePostRASchedulerPass(Registry);
initializePreISelIntrinsicLoweringLegacyPassPass(Registry);
initializeProcessImplicitDefsPass(Registry);
initializeRABasicPass(Registry);
initializeRAFastPass(Registry);
initializeRAGreedyPass(Registry);
initializeRegisterCoalescerPass(Registry);
initializeRenameIndependentSubregsPass(Registry);
initializeSafeStackLegacyPassPass(Registry);
initializeScalarizeMaskedMemIntrinPass(Registry);
initializeShrinkWrapPass(Registry);
initializeSlotIndexesPass(Registry);
initializeStackColoringPass(Registry);
initializeStackMapLivenessPass(Registry);
initializeStackProtectorPass(Registry);
initializeStackSlotColoringPass(Registry);
initializeTailDuplicatePassPass(Registry);
initializeTargetPassConfigPass(Registry);
initializeTwoAddressInstructionPassPass(Registry);
initializeUnpackMachineBundlesPass(Registry);
initializeUnreachableBlockElimLegacyPassPass(Registry);
initializeUnreachableMachineBlockElimPass(Registry);
initializeVirtRegMapPass(Registry);
initializeVirtRegRewriterPass(Registry);
initializeWinEHPreparePass(Registry);
initializeXRayInstrumentationPass(Registry);
}
void LLVMInitializeCodeGen(LLVMPassRegistryRef R) {
initializeCodeGen(*unwrap(R));
}