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Adding some optimization passes between two Alias Analysis passes

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Ilia Filippov
2013-12-27 18:52:23 +04:00
parent 5cfd773ec9
commit 4ef38e1615
1 changed files with 11 additions and 3 deletions
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14
opt.cpp
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@@ -514,6 +514,8 @@ Optimize(llvm::Module *module, int optLevel) {
llvm::initializeInstrumentation(*registry); llvm::initializeInstrumentation(*registry);
llvm::initializeTarget(*registry); llvm::initializeTarget(*registry);
optPM.add(llvm::createGlobalDCEPass(), 185);
// Setup to use LLVM default AliasAnalysis // Setup to use LLVM default AliasAnalysis
// Ideally, we want call: // Ideally, we want call:
// llvm::PassManagerBuilder pm_Builder; // llvm::PassManagerBuilder pm_Builder;
@@ -525,12 +527,18 @@ Optimize(llvm::Module *module, int optLevel) {
// An alternative is to call populateFunctionPassManager() // An alternative is to call populateFunctionPassManager()
optPM.add(llvm::createTypeBasedAliasAnalysisPass(), 190); optPM.add(llvm::createTypeBasedAliasAnalysisPass(), 190);
optPM.add(llvm::createBasicAliasAnalysisPass()); optPM.add(llvm::createBasicAliasAnalysisPass());
optPM.add(llvm::createCFGSimplificationPass());
optPM.add(llvm::createGlobalDCEPass(), 200); // Here clang has an experimental pass SROAPass instead of
// ScalarReplAggregatesPass. We should add it in the future.
optPM.add(llvm::createScalarReplAggregatesPass());
optPM.add(llvm::createEarlyCSEPass());
optPM.add(llvm::createLowerExpectIntrinsicPass());
optPM.add(llvm::createTypeBasedAliasAnalysisPass());
optPM.add(llvm::createBasicAliasAnalysisPass());
// Early optimizations to try to reduce the total amount of code to // Early optimizations to try to reduce the total amount of code to
// work with if we can // work with if we can
optPM.add(llvm::createReassociatePass()); optPM.add(llvm::createReassociatePass(), 200);
optPM.add(llvm::createConstantPropagationPass()); optPM.add(llvm::createConstantPropagationPass());
optPM.add(llvm::createDeadInstEliminationPass()); optPM.add(llvm::createDeadInstEliminationPass());
optPM.add(llvm::createCFGSimplificationPass()); optPM.add(llvm::createCFGSimplificationPass());