Re-commit 131172 with fix. MachineInstr identity checks should check dead

markers. In some cases a register def is dead on one path, but not on
another.

This is passing Clang self-hosting.

llvm-svn: 131214

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/include/llvm/CodeGen/MachineInstr.h b/llvm/include/llvm/CodeGen/MachineInstr.h
index 2724689786e..c36dd69e2d9 100644
--- a/llvm/include/llvm/CodeGen/MachineInstr.h
+++ b/llvm/include/llvm/CodeGen/MachineInstr.h
@@ -229,6 +229,7 @@ public:
 
   enum MICheckType {
     CheckDefs,      // Check all operands for equality
+    CheckKillDead,  // Check all operands including kill / dead markers
     IgnoreDefs,     // Ignore all definitions
     IgnoreVRegDefs  // Ignore virtual register definitions
   };