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[X86] Add (and (or x, C), D) -> D iff (C & D) == D non-splat vector test

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llvm-svn: 321268
This commit is contained in:
Simon Pilgrim 2017-12-21 14:33:40 +00:00
parent 2fb173e1e1
commit dc611378a2
1 changed files with 11 additions and 0 deletions
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11
test/CodeGen/X86/combine-and.ll
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@ -220,6 +220,17 @@ define <4 x i32> @and_or_v4i32(<4 x i32> %a0) {
ret <4 x i32> %2
}
define <8 x i16> @and_or_v8i16(<8 x i16> %a0) {
; CHECK-LABEL: and_or_v8i16:
; CHECK: # %bb.0:
; CHECK-NEXT: orps {{.*}}(%rip), %xmm0
; CHECK-NEXT: andps {{.*}}(%rip), %xmm0
; CHECK-NEXT: retq
%1 = or <8 x i16> %a0, <i16 255, i16 127, i16 63, i16 31, i16 15, i16 31, i16 63, i16 -1>
%2 = and <8 x i16> %1, <i16 15, i16 7, i16 3, i16 1, i16 14, i16 10, i16 2, i16 32767>
ret <8 x i16> %2
}
;
; known bits folding
;