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[X86][SSE] Add PR26491 horizontal add test 

llvm-svn: 323973
This commit is contained in:
Simon Pilgrim 2018-02-01 15:30:02 +00:00
parent 5d8babe30d
commit eb50b6d060
1 changed files with 39 additions and 0 deletions
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39
llvm/test/CodeGen/X86/haddsub-3.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=SSE,SSE2
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+ssse3 | FileCheck %s --check-prefixes=SSE,SSSE3
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx | FileCheck %s --check-prefixes=AVX
define float @pr26491(<4 x float> %a0) {
; SSE2-LABEL: pr26491:
; SSE2: # %bb.0:
; SSE2-NEXT: movaps %xmm0, %xmm1
; SSE2-NEXT: shufps {{.*#+}} xmm1 = xmm1[1,1,3,3]
; SSE2-NEXT: addps %xmm0, %xmm1
; SSE2-NEXT: movaps %xmm1, %xmm0
; SSE2-NEXT: movhlps {{.*#+}} xmm0 = xmm0[1,1]
; SSE2-NEXT: addss %xmm1, %xmm0
; SSE2-NEXT: retq
;
; SSSE3-LABEL: pr26491:
; SSSE3: # %bb.0:
; SSSE3-NEXT: movshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; SSSE3-NEXT: addps %xmm0, %xmm1
; SSSE3-NEXT: movaps %xmm1, %xmm0
; SSSE3-NEXT: movhlps {{.*#+}} xmm0 = xmm0[1,1]
; SSSE3-NEXT: addss %xmm1, %xmm0
; SSSE3-NEXT: retq
;
; AVX-LABEL: pr26491:
; AVX: # %bb.0:
; AVX-NEXT: vmovshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; AVX-NEXT: vaddps %xmm0, %xmm1, %xmm0
; AVX-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; AVX-NEXT: vaddss %xmm0, %xmm1, %xmm0
; AVX-NEXT: retq
%1 = shufflevector <4 x float> %a0, <4 x float> undef, <4 x i32> <i32 1, i32 1, i32 3, i32 3>
%2 = fadd <4 x float> %1, %a0
%3 = extractelement <4 x float> %2, i32 2
%4 = extractelement <4 x float> %2, i32 0
%5 = fadd float %3, %4
ret float %5
}