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54c0359890
we could do this, doing so requires adjusting the demanded mask and the code isn't doing that yet. This fixes PR4495 llvm-svn: 74699
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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