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[X86] Add PR46393 test case

This commit is contained in:
Simon Pilgrim 2020-10-29 16:27:04 +00:00
parent dee7704829
commit 93ebefb9ee
1 changed files with 22 additions and 0 deletions
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22
llvm/test/CodeGen/X86/vector-shuffle-combining-avx512bwvl.ll
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@ -153,3 +153,25 @@ define void @PR46178(i16* %0) {
store <4 x i16> zeroinitializer, <4 x i16>* %16, align 2
ret void
}
define <8 x i32> @PR46393(<8 x i16> %a0, i8 %a1) {
; X86-LABEL: PR46393:
; X86: # %bb.0:
; X86-NEXT: vpmovzxwd {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero
; X86-NEXT: movzbl {{[0-9]+}}(%esp), %eax
; X86-NEXT: kmovd %eax, %k1
; X86-NEXT: vpslld $16, %ymm0, %ymm0 {%k1} {z}
; X86-NEXT: retl
;
; X64-LABEL: PR46393:
; X64: # %bb.0:
; X64-NEXT: vpmovzxwd {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero
; X64-NEXT: kmovd %edi, %k1
; X64-NEXT: vpslld $16, %ymm0, %ymm0 {%k1} {z}
; X64-NEXT: retq
%zext = sext <8 x i16> %a0 to <8 x i32>
%mask = bitcast i8 %a1 to <8 x i1>
%shl = shl nuw <8 x i32> %zext, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
%sel = select <8 x i1> %mask, <8 x i32> %shl, <8 x i32> zeroinitializer
ret <8 x i32> %sel
}