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llvm-mirror/test/CodeGen/X86/avx512-hadd-hsub.ll
Simon Pilgrim 21418c85a1 [X86][SSE] getV4X86ShuffleImm8 - canonicalize broadcast masks 
If the mask input to getV4X86ShuffleImm8 only refers to a single source element (+ undefs) then canonicalize to a full broadcast.

getV4X86ShuffleImm8 defaults to inline values for undefs, which can be useful for shuffle widening/narrowing but does leave SimplifyDemanded* calls thinking the shuffle depends on unnecessary elements.

I'm still investigating what we should do more generally to avoid these undemanded elements, but broadcast cases was a simpler win.
2020-07-29 11:32:44 +01:00

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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
;RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=knl | FileCheck %s --check-prefixes=CHECK,KNL
;RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=skx | FileCheck %s --check-prefixes=CHECK,SKX
define i32 @hadd_16(<16 x i32> %x225) {
; KNL-LABEL: hadd_16:
; KNL: # %bb.0:
; KNL-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[2,3,2,3]
; KNL-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; KNL-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[1,1,1,1]
; KNL-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; KNL-NEXT: vmovd %xmm0, %eax
; KNL-NEXT: retq
;
; SKX-LABEL: hadd_16:
; SKX: # %bb.0:
; SKX-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[2,3,2,3]
; SKX-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; SKX-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[1,1,1,1]
; SKX-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; SKX-NEXT: vmovd %xmm0, %eax
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x226 = shufflevector <16 x i32> %x225, <16 x i32> undef, <16 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x227 = add <16 x i32> %x225, %x226
%x228 = shufflevector <16 x i32> %x227, <16 x i32> undef, <16 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x229 = add <16 x i32> %x227, %x228
%x230 = extractelement <16 x i32> %x229, i32 0
ret i32 %x230
}
define i32 @hsub_16(<16 x i32> %x225) {
; KNL-LABEL: hsub_16:
; KNL: # %bb.0:
; KNL-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[2,3,2,3]
; KNL-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; KNL-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[1,1,1,1]
; KNL-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; KNL-NEXT: vmovd %xmm0, %eax
; KNL-NEXT: retq
;
; SKX-LABEL: hsub_16:
; SKX: # %bb.0:
; SKX-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[2,3,2,3]
; SKX-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; SKX-NEXT: vpshufd {{.*#+}} xmm1 = xmm0[1,1,1,1]
; SKX-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; SKX-NEXT: vmovd %xmm0, %eax
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x226 = shufflevector <16 x i32> %x225, <16 x i32> undef, <16 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x227 = add <16 x i32> %x225, %x226
%x228 = shufflevector <16 x i32> %x227, <16 x i32> undef, <16 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x229 = sub <16 x i32> %x227, %x228
%x230 = extractelement <16 x i32> %x229, i32 0
ret i32 %x230
}
define float @fhadd_16(<16 x float> %x225) {
; KNL-LABEL: fhadd_16:
; KNL: # %bb.0:
; KNL-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; KNL-NEXT: vaddps %xmm1, %xmm0, %xmm0
; KNL-NEXT: vmovshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; KNL-NEXT: vaddss %xmm1, %xmm0, %xmm0
; KNL-NEXT: retq
;
; SKX-LABEL: fhadd_16:
; SKX: # %bb.0:
; SKX-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; SKX-NEXT: vaddps %xmm1, %xmm0, %xmm0
; SKX-NEXT: vmovshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; SKX-NEXT: vaddss %xmm1, %xmm0, %xmm0
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x226 = shufflevector <16 x float> %x225, <16 x float> undef, <16 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x227 = fadd <16 x float> %x225, %x226
%x228 = shufflevector <16 x float> %x227, <16 x float> undef, <16 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x229 = fadd <16 x float> %x227, %x228
%x230 = extractelement <16 x float> %x229, i32 0
ret float %x230
}
define float @fhsub_16(<16 x float> %x225) {
; KNL-LABEL: fhsub_16:
; KNL: # %bb.0:
; KNL-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; KNL-NEXT: vaddps %xmm1, %xmm0, %xmm0
; KNL-NEXT: vmovshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; KNL-NEXT: vsubss %xmm1, %xmm0, %xmm0
; KNL-NEXT: retq
;
; SKX-LABEL: fhsub_16:
; SKX: # %bb.0:
; SKX-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; SKX-NEXT: vaddps %xmm1, %xmm0, %xmm0
; SKX-NEXT: vmovshdup {{.*#+}} xmm1 = xmm0[1,1,3,3]
; SKX-NEXT: vsubss %xmm1, %xmm0, %xmm0
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x226 = shufflevector <16 x float> %x225, <16 x float> undef, <16 x i32> <i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x227 = fadd <16 x float> %x225, %x226
%x228 = shufflevector <16 x float> %x227, <16 x float> undef, <16 x i32> <i32 1, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x229 = fsub <16 x float> %x227, %x228
%x230 = extractelement <16 x float> %x229, i32 0
ret float %x230
}
define <16 x i32> @hadd_16_3(<16 x i32> %x225, <16 x i32> %x227) {
; CHECK-LABEL: hadd_16_3:
; CHECK: # %bb.0:
; CHECK-NEXT: vphaddd %ymm1, %ymm0, %ymm0
; CHECK-NEXT: retq
%x226 = shufflevector <16 x i32> %x225, <16 x i32> %x227, <16 x i32> <i32 0, i32 2, i32 16, i32 18
, i32 4, i32 6, i32 20, i32 22, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x228 = shufflevector <16 x i32> %x225, <16 x i32> %x227, <16 x i32> <i32 1, i32 3, i32 17, i32 19
, i32 5 , i32 7, i32 21, i32 23, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef,
i32 undef, i32 undef>
%x229 = add <16 x i32> %x226, %x228
ret <16 x i32> %x229
}
define <16 x float> @fhadd_16_3(<16 x float> %x225, <16 x float> %x227) {
; CHECK-LABEL: fhadd_16_3:
; CHECK: # %bb.0:
; CHECK-NEXT: vhaddps %ymm1, %ymm0, %ymm0
; CHECK-NEXT: retq
%x226 = shufflevector <16 x float> %x225, <16 x float> %x227, <16 x i32> <i32 0, i32 2, i32 16, i32 18
, i32 4, i32 6, i32 20, i32 22, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x228 = shufflevector <16 x float> %x225, <16 x float> %x227, <16 x i32> <i32 1, i32 3, i32 17, i32 19
, i32 5 , i32 7, i32 21, i32 23, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%x229 = fadd <16 x float> %x226, %x228
ret <16 x float> %x229
}
define <8 x double> @fhadd_16_4(<8 x double> %x225, <8 x double> %x227) {
; CHECK-LABEL: fhadd_16_4:
; CHECK: # %bb.0:
; CHECK-NEXT: vhaddpd %ymm1, %ymm0, %ymm0
; CHECK-NEXT: retq
%x226 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 0, i32 8, i32 2, i32 10, i32 undef, i32 undef, i32 undef, i32 undef>
%x228 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 1, i32 9, i32 3, i32 11, i32 undef ,i32 undef, i32 undef, i32 undef>
%x229 = fadd <8 x double> %x226, %x228
ret <8 x double> %x229
}
define <4 x double> @fadd_noundef_low(<8 x double> %x225, <8 x double> %x227) {
; CHECK-LABEL: fadd_noundef_low:
; CHECK: # %bb.0:
; CHECK-NEXT: vhaddpd %ymm1, %ymm0, %ymm0
; CHECK-NEXT: retq
%x226 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 0, i32 8, i32 2, i32 10, i32 4, i32 12, i32 6, i32 14>
%x228 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 1, i32 9, i32 3, i32 11, i32 5 ,i32 13, i32 7, i32 15>
%x229 = fadd <8 x double> %x226, %x228
%x230 = shufflevector <8 x double> %x229, <8 x double> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
ret <4 x double> %x230
}
define <4 x double> @fadd_noundef_high(<8 x double> %x225, <8 x double> %x227) {
; CHECK-LABEL: fadd_noundef_high:
; CHECK: # %bb.0:
; CHECK-NEXT: vunpcklpd {{.*#+}} zmm2 = zmm0[0],zmm1[0],zmm0[2],zmm1[2],zmm0[4],zmm1[4],zmm0[6],zmm1[6]
; CHECK-NEXT: vunpckhpd {{.*#+}} zmm0 = zmm0[1],zmm1[1],zmm0[3],zmm1[3],zmm0[5],zmm1[5],zmm0[7],zmm1[7]
; CHECK-NEXT: vextractf64x4 $1, %zmm0, %ymm0
; CHECK-NEXT: vextractf64x4 $1, %zmm2, %ymm1
; CHECK-NEXT: vaddpd %ymm0, %ymm1, %ymm0
; CHECK-NEXT: retq
%x226 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 0, i32 8, i32 2, i32 10, i32 4, i32 12, i32 6, i32 14>
%x228 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 1, i32 9, i32 3, i32 11, i32 5 ,i32 13, i32 7, i32 15>
%x229 = fadd <8 x double> %x226, %x228
%x230 = shufflevector <8 x double> %x229, <8 x double> undef, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
ret <4 x double> %x230
}
define <8 x i32> @hadd_16_3_sv(<16 x i32> %x225, <16 x i32> %x227) {
; CHECK-LABEL: hadd_16_3_sv:
; CHECK: # %bb.0:
; CHECK-NEXT: vphaddd %ymm1, %ymm0, %ymm0
; CHECK-NEXT: retq
%x226 = shufflevector <16 x i32> %x225, <16 x i32> %x227, <16 x i32> <i32 0, i32 2, i32 16, i32 18
, i32 4, i32 6, i32 20, i32 22, i32 8, i32 10, i32 24, i32 26, i32 12, i32 14, i32 28, i32 30>
%x228 = shufflevector <16 x i32> %x225, <16 x i32> %x227, <16 x i32> <i32 1, i32 3, i32 17, i32 19
, i32 5 , i32 7, i32 21, i32 23, i32 9, i32 11, i32 25, i32 27, i32 13, i32 15,
i32 29, i32 31>
%x229 = add <16 x i32> %x226, %x228
%x230 = shufflevector <16 x i32> %x229, <16 x i32> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4 ,i32 5, i32 6, i32 7>
ret <8 x i32> %x230
}
define double @fadd_noundef_eel(<8 x double> %x225, <8 x double> %x227) {
; KNL-LABEL: fadd_noundef_eel:
; KNL: # %bb.0:
; KNL-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; KNL-NEXT: vaddsd %xmm1, %xmm0, %xmm0
; KNL-NEXT: retq
;
; SKX-LABEL: fadd_noundef_eel:
; SKX: # %bb.0:
; SKX-NEXT: vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
; SKX-NEXT: vaddsd %xmm1, %xmm0, %xmm0
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x226 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 0, i32 8, i32 2, i32 10, i32 4, i32 12, i32 6, i32 14>
%x228 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 1, i32 9, i32 3, i32 11, i32 5 ,i32 13, i32 7, i32 15>
%x229 = fadd <8 x double> %x226, %x228
%x230 = extractelement <8 x double> %x229, i32 0
ret double %x230
}
define double @fsub_noundef_ee (<8 x double> %x225, <8 x double> %x227) {
; KNL-LABEL: fsub_noundef_ee:
; KNL: # %bb.0:
; KNL-NEXT: vextractf32x4 $2, %zmm1, %xmm0
; KNL-NEXT: vmovddup {{.*#+}} xmm1 = xmm0[0,0]
; KNL-NEXT: vsubpd %xmm0, %xmm1, %xmm0
; KNL-NEXT: vpermilpd {{.*#+}} xmm0 = xmm0[1,0]
; KNL-NEXT: retq
;
; SKX-LABEL: fsub_noundef_ee:
; SKX: # %bb.0:
; SKX-NEXT: vextractf32x4 $2, %zmm1, %xmm0
; SKX-NEXT: vmovddup {{.*#+}} xmm1 = xmm0[0,0]
; SKX-NEXT: vsubpd %xmm0, %xmm1, %xmm0
; SKX-NEXT: vpermilpd {{.*#+}} xmm0 = xmm0[1,0]
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x226 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 0, i32 8, i32 2, i32 10, i32 4, i32 12, i32 6, i32 14>
%x228 = shufflevector <8 x double> %x225, <8 x double> %x227, <8 x i32> <i32 1, i32 9, i32 3, i32 11, i32 5 ,i32 13, i32 7, i32 15>
%x229 = fsub <8 x double> %x226, %x228
%x230 = extractelement <8 x double> %x229, i32 5
ret double %x230
}
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