[PATCH] D133537: [pipelines] Require GlobalsAA after sanitizers

[Vitaly Buka via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
vitalybuka marked an inline comment as done.
Closed by commit rGc69b26911168: [pipelines] Require GlobalsAA after sanitizers (authored by vitalybuka).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D133537/new/

https://reviews.llvm.org/D133537

Files:
  clang/lib/CodeGen/BackendUtil.cpp


Index: clang/lib/CodeGen/BackendUtil.cpp
===================================================================
--- clang/lib/CodeGen/BackendUtil.cpp
+++ clang/lib/CodeGen/BackendUtil.cpp
@@ -668,7 +668,7 @@
           // the logic of the original code, but operates on "shadow" values. It
           // can benefit from re-running some general purpose optimization
           // passes.
-          MPM.addPass(RecomputeGlobalsAAPass());
+          MPM.addPass(RequireAnalysisPass<GlobalsAA, Module>());
           FunctionPassManager FPM;
           FPM.addPass(EarlyCSEPass(true /* Enable mem-ssa. */));
           FPM.addPass(InstCombinePass());
@@ -723,10 +723,21 @@
       MPM.addPass(DataFlowSanitizerPass(LangOpts.NoSanitizeFiles));
     }
   };
-  if (ClSanitizeOnOptimizerEarlyEP)
-    PB.registerOptimizerEarlyEPCallback(SanitizersCallback);
-  else
+  if (ClSanitizeOnOptimizerEarlyEP) {
+    PB.registerOptimizerEarlyEPCallback(
+        [SanitizersCallback](ModulePassManager &MPM, OptimizationLevel Level) {
+          ModulePassManager NewMPM;
+          SanitizersCallback(NewMPM, Level);
+          if (!NewMPM.isEmpty()) {
+            // Sanitizers can abandon<GlobalsAA>.
+            NewMPM.addPass(RequireAnalysisPass<GlobalsAA, Module>());
+            MPM.addPass(std::move(NewMPM));
+          }
+        });
+  } else {
+    // LastEP does not need GlobalsAA.
     PB.registerOptimizerLastEPCallback(SanitizersCallback);
+  }
 }
 
 void EmitAssemblyHelper::RunOptimizationPipeline(


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