Benjamin Kramer 160f72dc8e TLI: Microoptimize calls to strlen+memcmp to strncmp. ...

The strlen+memcmp was hidden in a call to StringRef::operator==. We check if
there are any null bytes in the string upfront so we can simplify the comparison
Small speedup when compiling code with many function calls.

llvm-svn: 176766

2013-03-09 13:48:23 +00:00

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