xref: /llvm-project/llvm/test/Transforms/InstCombine/allocsize-32.ll (revision 4ab40eca080965c65802710e39adbb78c4ce7bde) 
1; RUN: opt < %s -passes=instcombine -S | FileCheck %s
2;
3; The idea is that we want to have sane semantics (e.g. not assertion failures)
4; when given an allocsize function that takes a 64-bit argument in the face of
5; 32-bit pointers.
6
7target datalayout="e-p:32:32:32"
8
9declare ptr @my_malloc(ptr, i64) allocsize(1)
10
11define void @test_malloc(ptr %p, ptr %r) {
12  %1 = call ptr @my_malloc(ptr null, i64 100)
13  store ptr %1, ptr %p, align 8 ; To ensure objectsize isn't killed
14
15  %2 = call i32 @llvm.objectsize.i32.p0(ptr %1, i1 false)
16  ; CHECK: store i32 100
17  store i32 %2, ptr %r, align 8
18
19  ; Big number is 5 billion.
20  %3 = call ptr @my_malloc(ptr null, i64 5000000000)
21  store ptr %3, ptr %p, align 8 ; To ensure objectsize isn't killed
22
23  ; CHECK: call i32 @llvm.objectsize
24  %4 = call i32 @llvm.objectsize.i32.p0(ptr %3, i1 false)
25  store i32 %4, ptr %r, align 8
26  ret void
27}
28
29declare i32 @llvm.objectsize.i32.p0(ptr, i1)
30