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3 Commits

Author SHA1 Message Date
Simon Pilgrim 940eae3cc1 [X86][SSE] Add custom execution domain fixing for BLENDPD/BLENDPS/PBLENDD/PBLENDW (PR34873) 
Add support for custom execution domain fixing and implement support for BLENDPD/BLENDPS/PBLENDD/PBLENDW.

Differential Revision: https://reviews.llvm.org/D42042

llvm-svn: 322524
 2018-01-15 22:18:45 +00:00
Simon Pilgrim 5127dbbb23 [X86][SSE] Add i686 triple tests for PBLENDW commutation 
llvm-svn: 302145
 2017-05-04 13:08:09 +00:00
Andrea Di Biagio 7ecd22ca4a [X86] When commuting SSE immediate blend, make sure that the new blend mask is a valid imm8. 
Example:
define <4 x i32> @test(<4 x i32> %a, <4 x i32> %b) {
  %shuffle = shufflevector <4 x i32> %a, <4 x i32> %b, <4 x i32> <i32 4, i32 5, i32 6, i32 3>
  ret <4 x i32> %shuffle
}

Before llc (-mattr=+sse4.1), produced the following assembly instruction:
  pblendw $4294967103, %xmm1, %xmm0

After
  pblendw $63, %xmm1, %xmm0

llvm-svn: 221455
 2014-11-06 14:36:45 +00:00