mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-26 14:15:53 +00:00
cb18ca29e2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152832 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
818 B
LLVM
21 lines
818 B
LLVM
; 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
|