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-rw-r--r--include/llvm/CodeGen/MachineInstr.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index 22a7ef2..4ccc372 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -792,6 +792,9 @@ public:
/// setPhysRegsDeadExcept - Mark every physreg used by this instruction as
/// dead except those in the UsedRegs list.
+ ///
+ /// On instructions with register mask operands, also add implicit-def
+ /// operands for all registers in UsedRegs.
void setPhysRegsDeadExcept(ArrayRef<unsigned> UsedRegs,
const TargetRegisterInfo &TRI);