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[x86] add test for multi-use scalarization of vector binop; NFC 

llvm-svn: 372883
This commit is contained in:
Sanjay Patel 2019-09-25 14:57:45 +00:00
parent 5f2d8b2618
commit 1aa09e0585
1 changed files with 26 additions and 0 deletions
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26
llvm/test/CodeGen/X86/scalarize-fp.ll
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@ -773,3 +773,29 @@ define <8 x float> @splat0_fdiv_const_op0_v8f32(<8 x float> %vx) {
%r = shufflevector <8 x float> %b, <8 x float> undef, <8 x i32> zeroinitializer
ret <8 x float> %r
}
define <4 x float> @multi_use_binop(<4 x float> %x, <4 x float> %y) {
; SSE-LABEL: multi_use_binop:
; SSE: # %bb.0:
; SSE-NEXT: movaps %xmm0, %xmm2
; SSE-NEXT: mulps %xmm1, %xmm2
; SSE-NEXT: mulss %xmm1, %xmm0
; SSE-NEXT: shufps {{.*#+}} xmm0 = xmm0[0,0,0,0]
; SSE-NEXT: movlhps {{.*#+}} xmm1 = xmm1[0],xmm2[0]
; SSE-NEXT: addps %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: multi_use_binop:
; AVX: # %bb.0:
; AVX-NEXT: vmulps %xmm1, %xmm0, %xmm2
; AVX-NEXT: vmulss %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpermilps {{.*#+}} xmm0 = xmm0[0,0,0,0]
; AVX-NEXT: vmovddup {{.*#+}} xmm1 = xmm2[0,0]
; AVX-NEXT: vaddps %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%mul = fmul <4 x float> %x, %y
%mul0 = shufflevector <4 x float> %mul, <4 x float> undef, <4 x i32> <i32 undef, i32 undef, i32 undef, i32 0>
%mul1 = shufflevector <4 x float> %mul, <4 x float> undef, <4 x i32> <i32 undef, i32 undef, i32 undef, i32 1>
%r = fadd <4 x float> %mul0, %mul1
ret <4 x float> %r
}