From: Matthias Braun <matze@braunis.de>
Date: Mon, 26 Sep 2016 18:38:05 +0000 (+0000)
Subject: MachineInstr: Fix comment typo, further refine comment; NFC
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4d5121c6bbc6a881adfb86d259d247786d96a9de;p=llvm

MachineInstr: Fix comment typo, further refine comment; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282424 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index c645c20cc17..b99dbf0fc97 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -722,8 +722,10 @@ public:
   };
 
   /// Return true if this instruction is identical to \p Other.
-  /// Identical meaning same opcode and all operands reported as
-  /// isIdenticalOp()  (equal except for liveness flags).
+  /// Two instructions are identical if they have the same opcode and all their
+  /// operands are identical (with respect to MachineOperand::isIdenticalTo()).
+  /// Note that this means liveness related flags (dead, undef, kill) do not
+  /// affect the notion of identical.
   bool isIdenticalTo(const MachineInstr &Other,
                      MICheckType Check = CheckDefs) const;