[PATCH] D33752: Add opt-bisect support to polly

[Eli Friedman via Phabricator via llvm-commits]

efriedma created this revision.

This is useful for debugging miscompiles and extracting testcases for crashes.  See http://llvm.org/docs/OptBisect.html .

Depends on https://reviews.llvm.org/D33751.


Repository:
  rL LLVM

https://reviews.llvm.org/D33752

Files:
  lib/Analysis/ScopPass.cpp
  lib/Transform/CodePreparation.cpp


Index: lib/Transform/CodePreparation.cpp
===================================================================
--- lib/Transform/CodePreparation.cpp
+++ lib/Transform/CodePreparation.cpp
@@ -72,12 +72,15 @@
 }
 
 bool CodePreparation::runOnFunction(Function &F) {
+  if (skipFunction(F))
+    return false;
+
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
   SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
 
   splitEntryBlockForAlloca(&F.getEntryBlock(), this);
 
-  return false;
+  return true;
 }
 
 void CodePreparation::releaseMemory() { clear(); }
Index: lib/Analysis/ScopPass.cpp
===================================================================
--- lib/Analysis/ScopPass.cpp
+++ lib/Analysis/ScopPass.cpp
@@ -22,6 +22,9 @@
 bool ScopPass::runOnRegion(Region *R, RGPassManager &RGM) {
   S = nullptr;
 
+  if (skipRegion(*R))
+    return false;
+
   if ((S = getAnalysis<ScopInfoRegionPass>().getScop()))
     return runOnScop(*S);
 


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