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[AArch64] Fix a build_vector pattern match fail

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caused by defect in isBuildVectorAllZeros().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211567 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Qin
2014-06-24 05:37:27 +00:00
parent f36c3de849
commit 8c0787e83a
2 changed files with 35 additions and 24 deletions
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10
test/CodeGen/AArch64/arm64-build-vector.ll
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@@ -33,3 +33,13 @@ define <4 x float> @foo(float %a, float %b, float %c, float %d) nounwind {
%4 = insertelement <4 x float> %3, float %d, i32 3
ret <4 x float> %4
}
define <8 x i16> @build_all_zero(<8 x i16> %a) #1 {
; CHECK-LABEL: build_all_zero:
; CHECK: movn w[[GREG:[0-9]+]], #0x517f
; CHECK-NEXT: fmov s[[FREG:[0-9]+]], w[[GREG]]
; CHECK-NEXT: mul.8h v0, v0, v[[FREG]]
%b = add <8 x i16> %a, <i16 -32768, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>
%c = mul <8 x i16> %b, <i16 -20864, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>
ret <8 x i16> %c
}