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b10e0da065
In practice this can only happen on code with already undefined behavior, but this is still a good thing to handle correctly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46539 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
899 B
LLVM
22 lines
899 B
LLVM
; RUN: llvm-as < %s | opt -scalarrepl -instcombine | llvm-dis | grep {ret i8 17}
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; rdar://5707076
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin9.1.0"
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%struct.T = type <{ i8, [3 x i8] }>
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define i8 @f() {
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entry:
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%s = alloca [1 x %struct.T], align 4 ; <[1 x %struct.T]*> [#uses=2]
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%T3 = bitcast [1 x %struct.T]* %s to i32*
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store i32 -61184, i32* %T3
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%tmp16 = getelementptr [1 x %struct.T]* %s, i32 0, i32 0 ; <%struct.T*> [#uses=1]
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%tmp17 = getelementptr %struct.T* %tmp16, i32 0, i32 1 ; <[3 x i8]*> [#uses=1]
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%tmp1718 = bitcast [3 x i8]* %tmp17 to i32* ; <i32*> [#uses=1]
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%tmp19 = load i32* %tmp1718, align 4 ; <i32> [#uses=1]
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%mask = and i32 %tmp19, 16777215 ; <i32> [#uses=2]
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%mask2324 = trunc i32 %mask to i8 ; <i8> [#uses=1]
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ret i8 %mask2324
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}
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