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This patch consists of a single pass whose only purpose is to visit previous inserted gc.statepoints which do not have gc.relocates inserted yet, and insert them. This can be used either immediately after IR generation to perform 'early safepoint insertion' or late in the pass order to perform 'late insertion'. This patch is setting the stage for work to continue in tree. In particular, there are known naming and style violations in the current patch. I'll try to get those resolved over the next week or so. As I touch each area to make style changes, I need to make sure we have adequate testing in place. As part of the cleanup, I will be cleaning up a collection of test cases we have out of tree and submitting them upstream. The tests included in this change are very basic and mostly to provide examples of usage. The pass has several main subproblems it needs to address: - First, it has identify any live pointers. In the current code, the use of address spaces to distinguish pointers to GC managed objects is hard coded, but this will become parametrizable in the near future. Note that the current change doesn't actually contain a useful liveness analysis. It was seperated into a followup change as the code wasn't ready to be shared. Instead, the current implementation just considers any dominating def of appropriate pointer type to be live. - Second, it has to identify base pointers for each live pointer. This is a fairly straight forward data flow algorithm. - Third, the information in the previous steps is used to actually introduce rewrites. Rather than trying to do this by hand, we simply re-purpose the code behind Mem2Reg to do this for us. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229945 91177308-0d34-0410-b5e6-96231b3b80d8
238 lines
7.3 KiB
C++
238 lines
7.3 KiB
C++
//===-- Scalar.cpp --------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements common infrastructure for libLLVMScalarOpts.a, which
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// implements several scalar transformations over the LLVM intermediate
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// representation, including the C bindings for that library.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/Scalar.h"
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#include "llvm-c/Initialization.h"
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#include "llvm-c/Transforms/Scalar.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/IR/LegacyPassManager.h"
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using namespace llvm;
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/// initializeScalarOptsPasses - Initialize all passes linked into the
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/// ScalarOpts library.
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void llvm::initializeScalarOpts(PassRegistry &Registry) {
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initializeADCEPass(Registry);
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initializeBDCEPass(Registry);
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initializeAlignmentFromAssumptionsPass(Registry);
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initializeSampleProfileLoaderPass(Registry);
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initializeConstantHoistingPass(Registry);
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initializeConstantPropagationPass(Registry);
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initializeCorrelatedValuePropagationPass(Registry);
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initializeDCEPass(Registry);
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initializeDeadInstEliminationPass(Registry);
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initializeScalarizerPass(Registry);
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initializeDSEPass(Registry);
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initializeGVNPass(Registry);
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initializeEarlyCSELegacyPassPass(Registry);
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initializeFlattenCFGPassPass(Registry);
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initializeInductiveRangeCheckEliminationPass(Registry);
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initializeIndVarSimplifyPass(Registry);
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initializeJumpThreadingPass(Registry);
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initializeLICMPass(Registry);
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initializeLoopDeletionPass(Registry);
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initializeLoopAccessAnalysisPass(Registry);
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initializeLoopInstSimplifyPass(Registry);
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initializeLoopRotatePass(Registry);
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initializeLoopStrengthReducePass(Registry);
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initializeLoopRerollPass(Registry);
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initializeLoopUnrollPass(Registry);
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initializeLoopUnswitchPass(Registry);
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initializeLoopIdiomRecognizePass(Registry);
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initializeLowerAtomicPass(Registry);
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initializeLowerExpectIntrinsicPass(Registry);
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initializeMemCpyOptPass(Registry);
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initializeMergedLoadStoreMotionPass(Registry);
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initializePartiallyInlineLibCallsPass(Registry);
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initializeReassociatePass(Registry);
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initializeRegToMemPass(Registry);
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initializeRewriteStatepointsForGCPass(Registry);
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initializeSCCPPass(Registry);
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initializeIPSCCPPass(Registry);
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initializeSROAPass(Registry);
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initializeSROA_DTPass(Registry);
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initializeSROA_SSAUpPass(Registry);
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initializeCFGSimplifyPassPass(Registry);
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initializeStructurizeCFGPass(Registry);
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initializeSinkingPass(Registry);
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initializeTailCallElimPass(Registry);
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initializeSeparateConstOffsetFromGEPPass(Registry);
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initializeStraightLineStrengthReducePass(Registry);
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initializeLoadCombinePass(Registry);
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initializePlaceBackedgeSafepointsImplPass(Registry);
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initializePlaceSafepointsPass(Registry);
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}
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void LLVMInitializeScalarOpts(LLVMPassRegistryRef R) {
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initializeScalarOpts(*unwrap(R));
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}
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void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createAggressiveDCEPass());
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}
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void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createBitTrackingDCEPass());
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}
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void LLVMAddAlignmentFromAssumptionsPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createAlignmentFromAssumptionsPass());
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}
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void LLVMAddCFGSimplificationPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createCFGSimplificationPass());
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}
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void LLVMAddDeadStoreEliminationPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createDeadStoreEliminationPass());
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}
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void LLVMAddScalarizerPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createScalarizerPass());
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}
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void LLVMAddGVNPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createGVNPass());
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}
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void LLVMAddMergedLoadStoreMotionPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createMergedLoadStoreMotionPass());
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}
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void LLVMAddIndVarSimplifyPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createIndVarSimplifyPass());
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}
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void LLVMAddInstructionCombiningPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createInstructionCombiningPass());
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}
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void LLVMAddJumpThreadingPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createJumpThreadingPass());
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}
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void LLVMAddLICMPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLICMPass());
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}
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void LLVMAddLoopDeletionPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLoopDeletionPass());
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}
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void LLVMAddLoopIdiomPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLoopIdiomPass());
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}
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void LLVMAddLoopRotatePass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLoopRotatePass());
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}
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void LLVMAddLoopRerollPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLoopRerollPass());
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}
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void LLVMAddLoopUnrollPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLoopUnrollPass());
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}
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void LLVMAddLoopUnswitchPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLoopUnswitchPass());
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}
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void LLVMAddMemCpyOptPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createMemCpyOptPass());
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}
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void LLVMAddPartiallyInlineLibCallsPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createPartiallyInlineLibCallsPass());
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}
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void LLVMAddLowerSwitchPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLowerSwitchPass());
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}
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void LLVMAddPromoteMemoryToRegisterPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createPromoteMemoryToRegisterPass());
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}
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void LLVMAddReassociatePass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createReassociatePass());
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}
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void LLVMAddSCCPPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createSCCPPass());
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}
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void LLVMAddScalarReplAggregatesPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createScalarReplAggregatesPass());
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}
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void LLVMAddScalarReplAggregatesPassSSA(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createScalarReplAggregatesPass(-1, false));
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}
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void LLVMAddScalarReplAggregatesPassWithThreshold(LLVMPassManagerRef PM,
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int Threshold) {
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unwrap(PM)->add(createScalarReplAggregatesPass(Threshold));
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}
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void LLVMAddSimplifyLibCallsPass(LLVMPassManagerRef PM) {
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// NOTE: The simplify-libcalls pass has been removed.
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}
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void LLVMAddTailCallEliminationPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createTailCallEliminationPass());
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}
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void LLVMAddConstantPropagationPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createConstantPropagationPass());
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}
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void LLVMAddDemoteMemoryToRegisterPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createDemoteRegisterToMemoryPass());
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}
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void LLVMAddVerifierPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createVerifierPass());
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// FIXME: should this also add createDebugInfoVerifierPass()?
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}
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void LLVMAddCorrelatedValuePropagationPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createCorrelatedValuePropagationPass());
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}
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void LLVMAddEarlyCSEPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createEarlyCSEPass());
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}
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void LLVMAddTypeBasedAliasAnalysisPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createTypeBasedAliasAnalysisPass());
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}
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void LLVMAddScopedNoAliasAAPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createScopedNoAliasAAPass());
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}
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void LLVMAddBasicAliasAnalysisPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createBasicAliasAnalysisPass());
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}
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void LLVMAddLowerExpectIntrinsicPass(LLVMPassManagerRef PM) {
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unwrap(PM)->add(createLowerExpectIntrinsicPass());
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}
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