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[X86][SSE] Add test for extractelement with multiple uses

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Mentioned in D70267
This commit is contained in:
Simon Pilgrim 2019-11-18 11:36:14 +00:00
parent fc4bc8c8eb
commit e3dc3bbf4c
1 changed files with 46 additions and 0 deletions
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46
test/CodeGen/X86/extractelement-load.ll
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@ -119,3 +119,49 @@ define void @t5(<2 x double> *%a0, double *%a1) {
store volatile double %vecext, double* %a1, align 8
ret void
}
; Check for multiuse.
define float @t6(<8 x float> *%a0) {
; X32-SSE2-LABEL: t6:
; X32-SSE2: # %bb.0:
; X32-SSE2-NEXT: pushl %eax
; X32-SSE2-NEXT: .cfi_def_cfa_offset 8
; X32-SSE2-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-SSE2-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; X32-SSE2-NEXT: xorps %xmm1, %xmm1
; X32-SSE2-NEXT: cmpeqss %xmm0, %xmm1
; X32-SSE2-NEXT: movss {{.*#+}} xmm2 = mem[0],zero,zero,zero
; X32-SSE2-NEXT: andps %xmm1, %xmm2
; X32-SSE2-NEXT: andnps %xmm0, %xmm1
; X32-SSE2-NEXT: orps %xmm2, %xmm1
; X32-SSE2-NEXT: movss %xmm1, (%esp)
; X32-SSE2-NEXT: flds (%esp)
; X32-SSE2-NEXT: popl %eax
; X32-SSE2-NEXT: .cfi_def_cfa_offset 4
; X32-SSE2-NEXT: retl
;
; X64-SSSE3-LABEL: t6:
; X64-SSSE3: # %bb.0:
; X64-SSSE3-NEXT: movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
; X64-SSSE3-NEXT: xorps %xmm0, %xmm0
; X64-SSSE3-NEXT: cmpeqss %xmm1, %xmm0
; X64-SSSE3-NEXT: movss {{.*#+}} xmm2 = mem[0],zero,zero,zero
; X64-SSSE3-NEXT: andps %xmm0, %xmm2
; X64-SSSE3-NEXT: andnps %xmm1, %xmm0
; X64-SSSE3-NEXT: orps %xmm2, %xmm0
; X64-SSSE3-NEXT: retq
;
; X64-AVX-LABEL: t6:
; X64-AVX: # %bb.0:
; X64-AVX-NEXT: vmovshdup {{.*#+}} xmm0 = mem[1,1,3,3]
; X64-AVX-NEXT: vxorps %xmm1, %xmm1, %xmm1
; X64-AVX-NEXT: vcmpeqss %xmm1, %xmm0, %xmm1
; X64-AVX-NEXT: vmovss {{.*#+}} xmm2 = mem[0],zero,zero,zero
; X64-AVX-NEXT: vblendvps %xmm1, %xmm2, %xmm0, %xmm0
; X64-AVX-NEXT: retq
%vecload = load <8 x float>, <8 x float>* %a0, align 32
%vecext = extractelement <8 x float> %vecload, i32 1
%cmp = fcmp oeq float %vecext, 0.000000e+00
%cond = select i1 %cmp, float 1.000000e+00, float %vecext
ret float %cond
}