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Nick Lewycky b0da7ed9c8 Fix broken optimization disabled by a logic bug.
Analyze GEPs. If the indices are all zero, transfer whether the pointer is
known to be not null through the GEP.

Add a few more cases for xor and shift instructions.

llvm-svn: 35257
2007-03-22 02:02:51 +00:00
llvm Fix broken optimization disabled by a logic bug. 2007-03-22 02:02:51 +00:00
stacker Add required header file. 2007-03-10 05:57:57 +00:00