| ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 -mattr=+sse4.1 | FileCheck %s |
| |
| |
| ; Verify that we produce movss instead of blendvps when possible. |
| |
| ;CHECK-LABEL: vsel_float: |
| ;CHECK-NOT: blend |
| ;CHECK: movss |
| ;CHECK: ret |
| define <4 x float> @vsel_float(<4 x float> %v1, <4 x float> %v2) { |
| %vsel = select <4 x i1> <i1 true, i1 false, i1 false, i1 false>, <4 x float> %v1, <4 x float> %v2 |
| ret <4 x float> %vsel |
| } |
| |
| ;CHECK-LABEL: vsel_4xi8: |
| ;CHECK-NOT: blend |
| ;CHECK: movss |
| ;CHECK: ret |
| define <4 x i8> @vsel_4xi8(<4 x i8> %v1, <4 x i8> %v2) { |
| %vsel = select <4 x i1> <i1 true, i1 false, i1 false, i1 false>, <4 x i8> %v1, <4 x i8> %v2 |
| ret <4 x i8> %vsel |
| } |
| |
| ;CHECK-LABEL: vsel_8xi16: |
| ; The select mask is |
| ; <i1 true, i1 false, i1 false, i1 false, i1 true, i1 false, i1 false, i1 false> |
| ; which translates into the boolean mask (big endian representation): |
| ; 00010001 = 17. |
| ; '1' means takes the first argument, '0' means takes the second argument. |
| ; This is the opposite of the intel syntax, thus we expect |
| ; the inverted mask: 11101110 = 238. |
| ; According to the ABI: |
| ; v1 is in xmm0 => first argument is xmm0. |
| ; v2 is in xmm1 => second argument is xmm1. |
| ;CHECK: pblendw $238, %xmm1, %xmm0 |
| ;CHECK: ret |
| define <8 x i16> @vsel_8xi16(<8 x i16> %v1, <8 x i16> %v2) { |
| %vsel = select <8 x i1> <i1 true, i1 false, i1 false, i1 false, i1 true, i1 false, i1 false, i1 false>, <8 x i16> %v1, <8 x i16> %v2 |
| ret <8 x i16> %vsel |
| } |