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Surprisingly, we missed a trivial case here. Fix that!
llvm-svn: 164814
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@ -930,6 +930,10 @@ Instruction *InstCombiner::visitSelectInst(SelectInst &SI) {
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Value *V = Builder->CreateShuffleVector(TrueVal, FalseVal, MaskVal);
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return ReplaceInstUsesWith(SI, V);
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}
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if (isa<ConstantAggregateZero>(CondVal)) {
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return ReplaceInstUsesWith(SI, FalseVal);
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}
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}
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return 0;
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@ -188,3 +188,11 @@ define <4 x i16> @test13d(<4 x i16> %lhs, <4 x i16> %rhs) {
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<4 x i16> %lhs, <4 x i16> %rhs
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ret <4 x i16> %A
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}
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define <4 x i16> @test13e(<4 x i16> %lhs, <4 x i16> %rhs) {
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; CHECK: @test13e
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; CHECK-NEXT: ret <4 x i16> %rhs
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%A = select <4 x i1> <i1 false, i1 false, i1 false, i1 false>,
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<4 x i16> %lhs, <4 x i16> %rhs
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ret <4 x i16> %A
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}
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