[llvm] 48bfed7 - [LoopFlatten] Remove legacy pass (unused in the pipeline)
Fangrui Song via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 15 15:28:20 PST 2023
Author: Fangrui Song
Date: 2023-02-15T15:28:16-08:00
New Revision: 48bfed77cf86ee79331b26cef84888c8a95f1993
URL: https://github.com/llvm/llvm-project/commit/48bfed77cf86ee79331b26cef84888c8a95f1993
DIFF: https://github.com/llvm/llvm-project/commit/48bfed77cf86ee79331b26cef84888c8a95f1993.diff
LOG: [LoopFlatten] Remove legacy pass (unused in the pipeline)
Following recent changes to remove non-core legacy passes.
Added:
Modified:
llvm/include/llvm/InitializePasses.h
llvm/include/llvm/LinkAllPasses.h
llvm/include/llvm/Transforms/Scalar.h
llvm/lib/Transforms/Scalar/LoopFlatten.cpp
llvm/lib/Transforms/Scalar/Scalar.cpp
Removed:
################################################################################
diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index dafb1681e837..b3b58d6a203d 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -212,7 +212,6 @@ void initializeLoopGuardWideningLegacyPassPass(PassRegistry&);
void initializeLoopIdiomRecognizeLegacyPassPass(PassRegistry&);
void initializeLoopInfoWrapperPassPass(PassRegistry&);
void initializeLoopInstSimplifyLegacyPassPass(PassRegistry&);
-void initializeLoopFlattenLegacyPassPass(PassRegistry&);
void initializeLoopPassPass(PassRegistry&);
void initializeLoopPredicationLegacyPassPass(PassRegistry&);
void initializeLoopRerollLegacyPassPass(PassRegistry &);
diff --git a/llvm/include/llvm/LinkAllPasses.h b/llvm/include/llvm/LinkAllPasses.h
index a7391de8fe22..335460f700af 100644
--- a/llvm/include/llvm/LinkAllPasses.h
+++ b/llvm/include/llvm/LinkAllPasses.h
@@ -108,7 +108,6 @@ namespace {
(void) llvm::createLoopSinkPass();
(void) llvm::createLazyValueInfoPass();
(void) llvm::createLoopExtractorPass();
- (void) llvm::createLoopFlattenPass();
(void) llvm::createLoopPredicationPass();
(void) llvm::createLoopSimplifyPass();
(void) llvm::createLoopSimplifyCFGPass();
diff --git a/llvm/include/llvm/Transforms/Scalar.h b/llvm/include/llvm/Transforms/Scalar.h
index 85b19315dcd0..44d57f21a3f1 100644
--- a/llvm/include/llvm/Transforms/Scalar.h
+++ b/llvm/include/llvm/Transforms/Scalar.h
@@ -143,12 +143,6 @@ Pass *createLoopSinkPass();
//
Pass *createLoopPredicationPass();
-//===----------------------------------------------------------------------===//
-//
-// LoopFlatten - This pass flattens nested loops into a single loop.
-//
-FunctionPass *createLoopFlattenPass();
-
//===----------------------------------------------------------------------===//
//
// LoopStrengthReduce - This pass is strength reduces GEP instructions that use
diff --git a/llvm/lib/Transforms/Scalar/LoopFlatten.cpp b/llvm/lib/Transforms/Scalar/LoopFlatten.cpp
index 7d9ce8d35e0b..9fc69f528617 100644
--- a/llvm/lib/Transforms/Scalar/LoopFlatten.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopFlatten.cpp
@@ -963,60 +963,3 @@ PreservedAnalyses LoopFlattenPass::run(LoopNest &LN, LoopAnalysisManager &LAM,
PA.preserve<MemorySSAAnalysis>();
return PA;
}
-
-namespace {
-class LoopFlattenLegacyPass : public FunctionPass {
-public:
- static char ID; // Pass ID, replacement for typeid
- LoopFlattenLegacyPass() : FunctionPass(ID) {
- initializeLoopFlattenLegacyPassPass(*PassRegistry::getPassRegistry());
- }
-
- // Possibly flatten loop L into its child.
- bool runOnFunction(Function &F) override;
-
- void getAnalysisUsage(AnalysisUsage &AU) const override {
- getLoopAnalysisUsage(AU);
- AU.addRequired<TargetTransformInfoWrapperPass>();
- AU.addPreserved<TargetTransformInfoWrapperPass>();
- AU.addRequired<AssumptionCacheTracker>();
- AU.addPreserved<AssumptionCacheTracker>();
- AU.addPreserved<MemorySSAWrapperPass>();
- }
-};
-} // namespace
-
-char LoopFlattenLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(LoopFlattenLegacyPass, "loop-flatten", "Flattens loops",
- false, false)
-INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
-INITIALIZE_PASS_END(LoopFlattenLegacyPass, "loop-flatten", "Flattens loops",
- false, false)
-
-FunctionPass *llvm::createLoopFlattenPass() {
- return new LoopFlattenLegacyPass();
-}
-
-bool LoopFlattenLegacyPass::runOnFunction(Function &F) {
- ScalarEvolution *SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
- LoopInfo *LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
- auto *DTWP = getAnalysisIfAvailable<DominatorTreeWrapperPass>();
- DominatorTree *DT = DTWP ? &DTWP->getDomTree() : nullptr;
- auto &TTIP = getAnalysis<TargetTransformInfoWrapperPass>();
- auto *TTI = &TTIP.getTTI(F);
- auto *AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
- auto *MSSA = getAnalysisIfAvailable<MemorySSAWrapperPass>();
-
- std::optional<MemorySSAUpdater> MSSAU;
- if (MSSA)
- MSSAU = MemorySSAUpdater(&MSSA->getMSSA());
-
- bool Changed = false;
- for (Loop *L : *LI) {
- auto LN = LoopNest::getLoopNest(*L, *SE);
- Changed |=
- Flatten(*LN, DT, LI, SE, AC, TTI, nullptr, MSSAU ? &*MSSAU : nullptr);
- }
- return Changed;
-}
diff --git a/llvm/lib/Transforms/Scalar/Scalar.cpp b/llvm/lib/Transforms/Scalar/Scalar.cpp
index 31b39128dd1c..aa4dd61c4974 100644
--- a/llvm/lib/Transforms/Scalar/Scalar.cpp
+++ b/llvm/lib/Transforms/Scalar/Scalar.cpp
@@ -62,7 +62,6 @@ void llvm::initializeScalarOpts(PassRegistry &Registry) {
initializeLoopDeletionLegacyPassPass(Registry);
initializeLoopAccessLegacyAnalysisPass(Registry);
initializeLoopInstSimplifyLegacyPassPass(Registry);
- initializeLoopFlattenLegacyPassPass(Registry);
initializeLoopPredicationLegacyPassPass(Registry);
initializeLoopRotateLegacyPassPass(Registry);
initializeLoopStrengthReducePass(Registry);
@@ -175,10 +174,6 @@ void LLVMAddLoopDeletionPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopDeletionPass());
}
-void LLVMAddLoopFlattenPass(LLVMPassManagerRef PM) {
- unwrap(PM)->add(createLoopFlattenPass());
-}
-
void LLVMAddLoopIdiomPass(LLVMPassManagerRef PM) {
unwrap(PM)->add(createLoopIdiomPass());
}
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