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Author SHA1 Message Date
Amara Emerson 7d6c55f8aa [X86] Improve codegen for inverted overflow checking intrinsics. 
Adds a new combine for: xor(setcc cc, val), 1 --> setcc (invert(cc), val)

Differential Revision: https://reviews.llvm.org/D38161

llvm-svn: 314514
 2017-09-29 13:53:44 +00:00
Amara Emerson bb16282fb1 [X86] Add overflow intrinsic test in preparation for D38161. 
This commit adds the test file before codegen changes as requested in
D38161 to make it easier to see the difference.

llvm-svn: 314416
 2017-09-28 13:43:48 +00:00