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[X86][AVX512] Update VPBROADCASTQ test to combine from VPERMQ instead of VPERMI2Q. 

VPERMI2Q doesn't have shuffle decoding from re-materializable constants.

llvm-svn: 295736
This commit is contained in:
Simon Pilgrim 2017-02-21 17:04:11 +00:00
parent f321ab6dd2
commit 5afda30930
1 changed files with 6 additions and 7 deletions
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13
llvm/test/CodeGen/X86/vector-shuffle-combining-avx512bw.ll
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@ -1136,18 +1136,17 @@ define <16 x float> @combine_vpermi2var_vpermvar_16f32_as_vperm2_zero(<16 x floa
define <8 x i64> @combine_vpermvar_insertion_as_broadcast_v8i64(i64 %a0) {
; X32-LABEL: combine_vpermvar_insertion_as_broadcast_v8i64:
; X32: # BB#0:
; X32-NEXT: vmovq {{.*#+}} xmm1 = mem[0],zero
; X32-NEXT: vpxord %zmm0, %zmm0, %zmm0
; X32-NEXT: vpermi2q %zmm0, %zmm1, %zmm0
; X32-NEXT: vmovq {{.*#+}} xmm0 = mem[0],zero
; X32-NEXT: vpxord %zmm1, %zmm1, %zmm1
; X32-NEXT: vpermq %zmm0, %zmm1, %zmm0
; X32-NEXT: retl
;
; X64-LABEL: combine_vpermvar_insertion_as_broadcast_v8i64:
; X64: # BB#0:
; X64-NEXT: vmovq %rdi, %xmm1
; X64-NEXT: vpxord %zmm0, %zmm0, %zmm0
; X64-NEXT: vpermi2q %zmm0, %zmm1, %zmm0
; X64-NEXT: vmovq %rdi, %xmm0
; X64-NEXT: vpbroadcastq %xmm0, %zmm0
; X64-NEXT: retq
%1 = insertelement <8 x i64> undef, i64 %a0, i32 0
%2 = tail call <8 x i64> @llvm.x86.avx512.mask.vpermi2var.q.512(<8 x i64> %1, <8 x i64> zeroinitializer, <8 x i64> undef, i8 -1)
%2 = tail call <8 x i64> @llvm.x86.avx512.mask.permvar.di.512(<8 x i64> %1, <8 x i64> zeroinitializer, <8 x i64> undef, i8 -1)
ret <8 x i64> %2
}