xref: /llvm-project/llvm/test/Transforms/LowerConstantIntrinsics/crash-on-large-allocas.ll (revision 136872a93a5b5639c971824973e423ac2493a615) 
1; RUN: opt -S -passes=lower-constant-intrinsics %s -o - | FileCheck %s
2;
3; Ensure that we don't {crash,return a bad value} when given an alloca larger
4; than what a pointer can represent.
5
6target datalayout = "p:16:16"
7
8; CHECK-LABEL: @alloca_overflow_is_unknown(
9define i16 @alloca_overflow_is_unknown() {
10  %i = alloca i8, i32 65537
11  %j = call i16 @llvm.objectsize.i16.p0(ptr %i, i1 false, i1 false, i1 false)
12  ; CHECK: ret i16 -1
13  ret i16 %j
14}
15
16declare i16 @llvm.objectsize.i16.p0(ptr, i1, i1, i1)
17