[PATCH] D157711: [AMDGPU] Clear BreakPhiNodesCache in-between functions

[Pierre van Houtryve via Phabricator via llvm-commits]

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Otherwise stale pointers pollute the cache and
when a dead PHI's memory is reused for another PHI, we can get a false positive hit in the cache.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157711

Files:
  llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp


Index: llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
===================================================================
--- llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
+++ llvm/lib/Target/AMDGPU/AMDGPUCodeGenPrepare.cpp
@@ -319,6 +319,7 @@
 } // end anonymous namespace
 
 bool AMDGPUCodeGenPrepareImpl::run(Function &F) {
+  BreakPhiNodesCache.clear();
   bool MadeChange = false;
 
   Function::iterator NextBB;


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