[PATCH] D85130: [SCEVExpander] [PowerPC] clear scev rewriter before deleting instructions.

[ChenZheng via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGba955397ac44: [SCEVExpander][PowerPC]clear scev rewriter before deleting instructions. (authored by shchenz).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D85130/new/

https://reviews.llvm.org/D85130

Files:
  llvm/lib/Target/PowerPC/PPCLoopInstrFormPrep.cpp


Index: llvm/lib/Target/PowerPC/PPCLoopInstrFormPrep.cpp
===================================================================
--- llvm/lib/Target/PowerPC/PPCLoopInstrFormPrep.cpp
+++ llvm/lib/Target/PowerPC/PPCLoopInstrFormPrep.cpp
@@ -606,6 +606,10 @@
       NewBasePtr = NewPHI;
   }
 
+  // Clear the rewriter cache, because values that are in the rewriter's cache
+  // can be deleted below, causing the AssertingVH in the cache to trigger.
+  SCEVE.clear();
+
   if (Instruction *IDel = dyn_cast<Instruction>(BasePtr))
     BBChanged.insert(IDel->getParent());
   BasePtr->replaceAllUsesWith(NewBasePtr);


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