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e255a8b38a
Fixes PR23455, where, when TableGen generates the matcher from the AsmString, it splits "cmp${cc}ss" into tokens, and the "ss" suffix is recognized as the SS register. I can't think of a situation where that's a feature, not a bug, hence: when a token is "isolated", i.e., it is followed and preceded by separators, it shouldn't be parsed as a register. Differential Revision: http://reviews.llvm.org/D9844 llvm-svn: 238536