diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-07 22:27:43 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-07 22:27:43 +0000 |
| commit | 9681c407b4f4a02308803a3c0119e27d44c82fd6 (patch) | |
| tree | 0ff5f05ab9ac94ce90163821c11835e9b0112922 /llvm/lib/Target/X86 | |
| parent | a74e3088dfdc3bd0242dcfb3712a3eeea67ad150 (diff) | |
| download | bcm5719-llvm-9681c407b4f4a02308803a3c0119e27d44c82fd6.tar.gz bcm5719-llvm-9681c407b4f4a02308803a3c0119e27d44c82fd6.zip | |
[CostModel][X86] Update SSE41/AVX1 vXi32 SHL costs
SSE41 provides pmulld which allows the simpler pslld/paddd/cvttps2dq/pmulld pattern than SSE2's use of pmuludq.
llvm-svn: 291372
Diffstat (limited to 'llvm/lib/Target/X86')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 30b20555257..489aab349d4 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -489,6 +489,8 @@ int X86TTIImpl::getArithmeticInstrCost( { ISD::SHL, MVT::v32i8, 2*11 }, // pblendvb sequence. { ISD::SHL, MVT::v8i16, 14 }, // pblendvb sequence. { ISD::SHL, MVT::v16i16, 2*14 }, // pblendvb sequence. + { ISD::SHL, MVT::v4i32, 4 }, // pslld/paddd/cvttps2dq/pmulld + { ISD::SHL, MVT::v8i32, 2*4 }, // pslld/paddd/cvttps2dq/pmulld { ISD::SRL, MVT::v16i8, 12 }, // pblendvb sequence. { ISD::SRL, MVT::v32i8, 2*12 }, // pblendvb sequence. |
