[llvm-commits] [llvm] r94261 - /llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp

[Daniel Dunbar]

Author: ddunbar
Date: Fri Jan 22 18:26:16 2010
New Revision: 94261

URL: http://llvm.org/viewvc/llvm-project?rev=94261&view=rev
Log:
AsmMatcher: Add a comment.

Modified:
    llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp

Modified: llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp?rev=94261&r1=94260&r2=94261&view=diff

==============================================================================
--- llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp (original)
+++ llvm/trunk/utils/TableGen/AsmMatcherEmitter.cpp Fri Jan 22 18:26:16 2010
@@ -465,6 +465,10 @@
     if (Operands.size() != RHS.Operands.size())
       return false;
 
+    // Otherwise, make sure the ordering of the two instructions is unambiguous
+    // by checking that either (a) a token or operand kind discriminates them,
+    // or (b) the ordering among equivalent kinds is consistent.
+
     // Tokens and operand kinds are unambiguous (assuming a correct target
     // specific parser).
     for (unsigned i = 0, e = Operands.size(); i != e; ++i)