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- ; PR12202
- ; RUN: opt < %s -scalarrepl -S
- ; Ensure that we do not hang or crash when feeding a negative value to memset
- target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f80:128:128-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S32"
- target triple = "i686-pc-win32"
- define i32 @test() nounwind {
- entry:
- %retval = alloca i32, align 4
- %buff = alloca [1 x i8], align 1
- store i32 0, i32* %retval
- %0 = bitcast [1 x i8]* %buff to i8*
- call void @llvm.memset.p0i8.i32(i8* %0, i8 0, i32 1, i32 1, i1 false)
- %arraydecay = getelementptr inbounds [1 x i8], [1 x i8]* %buff, i32 0, i32 0
- call void @llvm.memset.p0i8.i32(i8* %arraydecay, i8 -1, i32 -8, i32 1, i1 false) ; Negative 8!
- ret i32 0
- }
- declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
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