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Author SHA1 Message Date
NAKAMURA Takumi 2d35a06080 llvm/test/CodeGen/X86/combine-sse41-intrinsics.ll: Add explicit triple. 
llvm-svn: 208897
 2014-05-15 15:45:31 +00:00
Andrea Di Biagio d621120533 [X86] Teach the backend how to fold SSE4.1/AVX/AVX2 blend intrinsics. 
Added target specific combine rules to fold blend intrinsics according
to the following rules:
 1) fold(blend A, A, Mask) -> A;
 2) fold(blend A, B, <allZeros>) -> A;
 3) fold(blend A, B, <allOnes>) -> B.

Added two new tests to verify that the new folding rules work for all
the optimized blend intrinsics.

llvm-svn: 208895
 2014-05-15 15:18:15 +00:00