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0dabb0b177
we could do this, doing so requires adjusting the demanded mask and the code isn't doing that yet. This fixes PR4495 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74699 91177308-0d34-0410-b5e6-96231b3b80d8
16 lines
768 B
LLVM
16 lines
768 B
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis
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; PR4495
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define i32 @test(i64 %test) {
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entry:
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%0 = bitcast <4 x i32> undef to <16 x i8> ; <<16 x i8>> [#uses=1]
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%t12 = shufflevector <16 x i8> %0, <16 x i8> zeroinitializer, <16 x i32> <i32 0, i32 16, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0> ; <<16 x i8>> [#uses=1]
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%t11 = bitcast <16 x i8> %t12 to <2 x i64> ; <<2 x i64>> [#uses=1]
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%t9 = extractelement <2 x i64> %t11, i32 0 ; <i64> [#uses=1]
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%t10 = bitcast i64 %t9 to <2 x i32> ; <<2 x i32>> [#uses=1]
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%t7 = bitcast i64 %test to <2 x i32> ; <<2 x i32>> [#uses=1]
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%t6 = xor <2 x i32> %t10, %t7 ; <<2 x i32>> [#uses=1]
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%t1 = extractelement <2 x i32> %t6, i32 0 ; <i32> [#uses=1]
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ret i32 %t1
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}
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