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4 Commits

Author SHA1 Message Date
NAKAMURA Takumi e463e07bd5 Relax expressions and add explicit triplets -linux and -win32. 
llvm-svn: 126208
 2011-02-22 07:20:52 +00:00
Chris Lattner ae8d67d3bb convert cmp to use a multipattern 
llvm-svn: 115978
 2010-10-07 20:56:25 +00:00
Chris Lattner f5e3ed64d5 handle equality memcmp of 8 bytes on x86-64 with two unaligned loads and a 
compare.  On other targets we end up with a call to memcmp because we don't
want 16 individual byte loads.  We should be able to use movups as well, but
we're failing to select the generated icmp.

llvm-svn: 92107
 2009-12-24 01:07:17 +00:00
Chris Lattner 1a32ede6fd move an optimization for memcmp out of simplifylibcalls and into 
SDISel.  This optimization was causing simplifylibcalls to 
introduce type-unsafe nastiness.  This is the first step, I'll be 
expanding the memcmp optimizations shortly, covering things that
we really really wouldn't want simplifylibcalls to do.

llvm-svn: 92098
 2009-12-24 00:37:38 +00:00