[PATCH] [Tablegen] Fix alias instruction printer mangling opcodes with optional suffixes.

[hfinkel at anl.gov]

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  http://llvm.org/docs/Phabricator.html#requesting-a-review-via-the-web-interface


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Comment at: utils/TableGen/AsmWriterEmitter.cpp:1029
@@ -1026,2 +1028,3 @@
   O << "          printOperand(MI, unsigned(AsmString[I++]) - 1, OS);\n";
-  O << "      } else {\n";
+  O << "      } else if (NeedOpcodeSep &&\n";
+  O << "                 (AsmString[I] == ' ' || AsmString[I] == '\t')) {\n";
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So the general idea here is that we always eat the first ' ' or '\t' and replace it with a '\t'. All other whitespace (including that in between operands) passes through as provided. Is that right?

http://reviews.llvm.org/D6530

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