[llvm] r282424 - MachineInstr: Fix comment typo, further refine comment; NFC

[Matthias Braun via llvm-commits]

Author: matze
Date: Mon Sep 26 13:38:05 2016
New Revision: 282424

URL: http://llvm.org/viewvc/llvm-project?rev=282424&view=rev
Log:
MachineInstr: Fix comment typo, further refine comment; NFC

Modified:
    llvm/trunk/include/llvm/CodeGen/MachineInstr.h

Modified: llvm/trunk/include/llvm/CodeGen/MachineInstr.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineInstr.h?rev=282424&r1=282423&r2=282424&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/MachineInstr.h (original)
+++ llvm/trunk/include/llvm/CodeGen/MachineInstr.h Mon Sep 26 13:38:05 2016
@@ -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;