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Commit ef3358d5 authored by Ahmed Bougacha's avatar Ahmed Bougacha
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[TableGen] Use StringRef::compare instead of != and <. NFC. 

The previous code would always do 1 or 2 prefix compares;
explicitly only do one.

This speeds up debug -gen-asm-matcher by ~10% (e.g. X86: 40s -> 35s).

llvm-svn: 273583
parent 31ae3c5a
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