1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
; RUN: opt < %s -instcombine -S | FileCheck %s
;
; The idea is that we want to have sane semantics (e.g. not assertion failures)
; when given an allocsize function that takes a 64-bit argument in the face of
; 32-bit pointers.
target datalayout="e-p:32:32:32"
declare i8* @my_malloc(i8*, i64) allocsize(1)
define void @test_malloc(i8** %p, i32* %r) {
%1 = call i8* @my_malloc(i8* null, i64 100)
store i8* %1, i8** %p, align 8 ; To ensure objectsize isn't killed
%2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false)
; CHECK: store i32 100
store i32 %2, i32* %r, align 8
; Big number is 5 billion.
%3 = call i8* @my_malloc(i8* null, i64 5000000000)
store i8* %3, i8** %p, align 8 ; To ensure objectsize isn't killed
; CHECK: call i32 @llvm.objectsize
%4 = call i32 @llvm.objectsize.i32.p0i8(i8* %3, i1 false)
store i32 %4, i32* %r, align 8
ret void
}
declare i32 @llvm.objectsize.i32.p0i8(i8*, i1)
|
