[PATCH] D133637: Bug fix on stable hash calculation for machine operands RegisterMask and RegisterLiveOut

[YongKang Zhu via Phabricator via llvm-commits]

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MachineOperand::getRegMask() returns a pointer to register mask.  We should hash the raw content of register mask instead of its pointer.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133637

Files:
  llvm/lib/CodeGen/MachineStableHash.cpp


Index: llvm/lib/CodeGen/MachineStableHash.cpp
===================================================================
--- llvm/lib/CodeGen/MachineStableHash.cpp
+++ llvm/lib/CodeGen/MachineStableHash.cpp
@@ -120,7 +120,7 @@
 
   case MachineOperand::MO_RegisterMask:
   case MachineOperand::MO_RegisterLiveOut:
-    return hash_combine(MO.getType(), MO.getTargetFlags(), MO.getRegMask());
+    return hash_combine(MO.getType(), MO.getTargetFlags(), *MO.getRegMask());
 
   case MachineOperand::MO_ShuffleMask: {
     std::vector<llvm::stable_hash> ShuffleMaskHashes;


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