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[X86] Add test showing failure to combine shuffle to bit rotation

This commit is contained in:
Simon Pilgrim 2020-02-15 19:23:00 +00:00
parent 3f7649799b
commit 4abbaceea0
1 changed files with 9 additions and 0 deletions
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9
llvm/test/CodeGen/X86/vector-shuffle-combining-xop.ll
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@ -252,6 +252,15 @@ define <4 x i32> @combine_vpperm_10zz32BA(<4 x i32> %a0, <4 x i32> %a1) {
ret <4 x i32> %res3
}
define <16 x i8> @combine_vpperm_as_proti_v8i16(<16 x i8> %a0, <16 x i8> %a1) {
; CHECK-LABEL: combine_vpperm_as_proti_v8i16:
; CHECK: # %bb.0:
; CHECK-NEXT: vpperm {{.*#+}} xmm0 = xmm0[1,0,3,2,5,4,7,6,9,8,11,10,13,12,15,14]
; CHECK-NEXT: ret{{[l|q]}}
%res0 = call <16 x i8> @llvm.x86.xop.vpperm(<16 x i8> %a0, <16 x i8> %a1, <16 x i8> <i8 1, i8 0, i8 3, i8 2, i8 5, i8 4, i8 7, i8 6, i8 9, i8 8, i8 11, i8 10, i8 13, i8 12, i8 15, i8 14>)
ret <16 x i8> %res0
}
define <16 x i8> @combine_shuffle_proti_v2i64(<2 x i64> %a0) {
; CHECK-LABEL: combine_shuffle_proti_v2i64:
; CHECK: # %bb.0: