| ; 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]* %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 |
