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[x86] add tests for vector fdiv with splat divisor; NFC 

llvm-svn: 359006
This commit is contained in:
Sanjay Patel 2019-04-23 16:16:16 +00:00
parent 3ba5f66177
commit 171b74e31c
1 changed files with 101 additions and 0 deletions
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101
llvm/test/CodeGen/X86/fdiv-combine-vec.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-- -mattr=sse2 | FileCheck %s --check-prefix=SSE
; RUN: llc < %s -mtriple=x86_64-- -mattr=avx | FileCheck %s --check-prefix=AVX
define <2 x double> @splat_fdiv_v2f64(<2 x double> %x, double %y) {
; SSE-LABEL: splat_fdiv_v2f64:
; SSE: # %bb.0:
; SSE-NEXT: unpcklpd {{.*#+}} xmm1 = xmm1[0,0]
; SSE-NEXT: divpd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: splat_fdiv_v2f64:
; AVX: # %bb.0:
; AVX-NEXT: vmovddup {{.*#+}} xmm1 = xmm1[0,0]
; AVX-NEXT: vdivpd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%vy = insertelement <2 x double> undef, double %y, i32 0
%splaty = shufflevector <2 x double> %vy, <2 x double> undef, <2 x i32> zeroinitializer
%r = fdiv fast <2 x double> %x, %splaty
ret <2 x double> %r
}
define <4 x double> @splat_fdiv_v4f64(<4 x double> %x, double %y) {
; SSE-LABEL: splat_fdiv_v4f64:
; SSE: # %bb.0:
; SSE-NEXT: movsd {{.*#+}} xmm3 = mem[0],zero
; SSE-NEXT: divsd %xmm2, %xmm3
; SSE-NEXT: unpcklpd {{.*#+}} xmm3 = xmm3[0,0]
; SSE-NEXT: mulpd %xmm3, %xmm0
; SSE-NEXT: mulpd %xmm3, %xmm1
; SSE-NEXT: retq
;
; AVX-LABEL: splat_fdiv_v4f64:
; AVX: # %bb.0:
; AVX-NEXT: vmovddup {{.*#+}} xmm1 = xmm1[0,0]
; AVX-NEXT: vinsertf128 $1, %xmm1, %ymm1, %ymm1
; AVX-NEXT: vdivpd %ymm1, %ymm0, %ymm0
; AVX-NEXT: retq
%vy = insertelement <4 x double> undef, double %y, i32 0
%splaty = shufflevector <4 x double> %vy, <4 x double> undef, <4 x i32> zeroinitializer
%r = fdiv arcp <4 x double> %x, %splaty
ret <4 x double> %r
}
define <4 x float> @splat_fdiv_v4f32(<4 x float> %x, float %y) {
; SSE-LABEL: splat_fdiv_v4f32:
; SSE: # %bb.0:
; SSE-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,0,0,0]
; SSE-NEXT: rcpps %xmm1, %xmm2
; SSE-NEXT: mulps %xmm2, %xmm1
; SSE-NEXT: movaps {{.*#+}} xmm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0]
; SSE-NEXT: subps %xmm1, %xmm3
; SSE-NEXT: mulps %xmm2, %xmm3
; SSE-NEXT: addps %xmm2, %xmm3
; SSE-NEXT: mulps %xmm3, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: splat_fdiv_v4f32:
; AVX: # %bb.0:
; AVX-NEXT: vpermilps {{.*#+}} xmm1 = xmm1[0,0,0,0]
; AVX-NEXT: vrcpps %xmm1, %xmm2
; AVX-NEXT: vmulps %xmm2, %xmm1, %xmm1
; AVX-NEXT: vmovaps {{.*#+}} xmm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0]
; AVX-NEXT: vsubps %xmm1, %xmm3, %xmm1
; AVX-NEXT: vmulps %xmm1, %xmm2, %xmm1
; AVX-NEXT: vaddps %xmm1, %xmm2, %xmm1
; AVX-NEXT: vmulps %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%vy = insertelement <4 x float> undef, float %y, i32 0
%splaty = shufflevector <4 x float> %vy, <4 x float> undef, <4 x i32> zeroinitializer
%r = fdiv arcp reassoc <4 x float> %x, %splaty
ret <4 x float> %r
}
define <8 x float> @splat_fdiv_v8f32(<8 x float> %x, float %y) {
; SSE-LABEL: splat_fdiv_v8f32:
; SSE: # %bb.0:
; SSE-NEXT: movss {{.*#+}} xmm3 = mem[0],zero,zero,zero
; SSE-NEXT: divss %xmm2, %xmm3
; SSE-NEXT: shufps {{.*#+}} xmm3 = xmm3[0,0,0,0]
; SSE-NEXT: mulps %xmm3, %xmm0
; SSE-NEXT: mulps %xmm3, %xmm1
; SSE-NEXT: retq
;
; AVX-LABEL: splat_fdiv_v8f32:
; AVX: # %bb.0:
; AVX-NEXT: vpermilps {{.*#+}} xmm1 = xmm1[0,0,0,0]
; AVX-NEXT: vinsertf128 $1, %xmm1, %ymm1, %ymm1
; AVX-NEXT: vrcpps %ymm1, %ymm2
; AVX-NEXT: vmulps %ymm2, %ymm1, %ymm1
; AVX-NEXT: vmovaps {{.*#+}} ymm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
; AVX-NEXT: vsubps %ymm1, %ymm3, %ymm1
; AVX-NEXT: vmulps %ymm1, %ymm2, %ymm1
; AVX-NEXT: vaddps %ymm1, %ymm2, %ymm1
; AVX-NEXT: vmulps %ymm1, %ymm0, %ymm0
; AVX-NEXT: retq
%vy = insertelement <8 x float> undef, float %y, i32 0
%splaty = shufflevector <8 x float> %vy, <8 x float> undef, <8 x i32> zeroinitializer
%r = fdiv fast <8 x float> %x, %splaty
ret <8 x float> %r
}