[PATCH] D70423: [SCEV] Introduce ScalarEvolutionVerifierPass

[Daniil Suchkov via Phabricator via llvm-commits]

DaniilSuchkov created this revision.
DaniilSuchkov added reviewers: reames, fhahn, sanjoy.google, nikic.
Herald added subscribers: llvm-commits, javed.absar, hiraditya.
Herald added a project: LLVM.

This pass makes it easier to debug problems related to SCEV and can help writing IR tests for it.


https://reviews.llvm.org/D70423

Files:
  llvm/include/llvm/Analysis/ScalarEvolution.h
  llvm/lib/Analysis/ScalarEvolution.cpp
  llvm/lib/Passes/PassRegistry.def


Index: llvm/lib/Passes/PassRegistry.def
===================================================================
--- llvm/lib/Passes/PassRegistry.def
+++ llvm/lib/Passes/PassRegistry.def
@@ -240,6 +240,7 @@
 FUNCTION_PASS("verify<memoryssa>", MemorySSAVerifierPass())
 FUNCTION_PASS("verify<regions>", RegionInfoVerifierPass())
 FUNCTION_PASS("verify<safepoint-ir>", SafepointIRVerifierPass())
+FUNCTION_PASS("verify<scalar-evolution>", ScalarEvolutionVerifierPass())
 FUNCTION_PASS("view-cfg", CFGViewerPass())
 FUNCTION_PASS("view-cfg-only", CFGOnlyViewerPass())
 FUNCTION_PASS("transform-warning", WarnMissedTransformationsPass())
Index: llvm/lib/Analysis/ScalarEvolution.cpp
===================================================================
--- llvm/lib/Analysis/ScalarEvolution.cpp
+++ llvm/lib/Analysis/ScalarEvolution.cpp
@@ -12022,6 +12022,12 @@
                          AM.getResult<LoopAnalysis>(F));
 }
 
+PreservedAnalyses
+ScalarEvolutionVerifierPass::run(Function &F, FunctionAnalysisManager &AM) {
+  AM.getResult<ScalarEvolutionAnalysis>(F).verify();
+  return PreservedAnalyses::all();
+}
+
 PreservedAnalyses
 ScalarEvolutionPrinterPass::run(Function &F, FunctionAnalysisManager &AM) {
   AM.getResult<ScalarEvolutionAnalysis>(F).print(OS);
Index: llvm/include/llvm/Analysis/ScalarEvolution.h
===================================================================
--- llvm/include/llvm/Analysis/ScalarEvolution.h
+++ llvm/include/llvm/Analysis/ScalarEvolution.h
@@ -1922,6 +1922,13 @@
   ScalarEvolution run(Function &F, FunctionAnalysisManager &AM);
 };
 
+/// Verifier pass for the \c ScalarEvolutionAnalysis results.
+class ScalarEvolutionVerifierPass
+    : public PassInfoMixin<ScalarEvolutionVerifierPass> {
+public:
+  PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
+};
+
 /// Printer pass for the \c ScalarEvolutionAnalysis results.
 class ScalarEvolutionPrinterPass
     : public PassInfoMixin<ScalarEvolutionPrinterPass> {


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