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3 Commits

Author SHA1 Message Date
Chris Lattner
6eff75104e fix PR8267 - Instcombine shouldn't optimizer away volatile memcpy's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115296 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-01 05:51:02 +00:00
Chris Lattner
e94aa76d2a upgrade this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-01 05:47:16 +00:00
Eli Friedman
0c826d98b3 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.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91621 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:07:31 +00:00