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Author SHA1 Message Date
Chris Lattner c663a67384 fix PR8267 - Instcombine shouldn't optimizer away volatile memcpy's. 
llvm-svn: 115296
 2010-10-01 05:51:02 +00:00
Chris Lattner 98e82678bd upgrade this test. 
llvm-svn: 115295
 2010-10-01 05:47:16 +00:00
Eli Friedman 5842c9968a Slightly generalize transformation of memmove(a,a,n) so that it also applies 
to memcpy. (Such a memcpy is technically illegal, but in practice is safe
and is generated by struct self-assignment in C code.)

llvm-svn: 91621
 2009-12-17 21:07:31 +00:00