1; RUN: llc -o - < %s | FileCheck %s
2
3target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
4target triple = "x86_64-apple-macosx"
5
6; Even if the target supports shrink-wrapping, the prologue and epilogue
7; must not move because a crash can happen anywhere and sanitizers need
8; to be able to unwind from the PC of the crash.
9; CHECK-LABEL: sanitize:
10; CHECK: pushq
11; CHECK: incl 40
12; CHECK: popq
13; CHECK-NEXT: retq
14; CHECK: movl $40, %edi
15; CHECK-NEXT: callq ___asan_report_load4
16define  void @sanitize() #0 {
17entry:
18  %tmp = load i8, i8* inttoptr (i64 17592186044421 to i8*)
19  %tmp1 = icmp ne i8 %tmp, 0
20  br i1 %tmp1, label %if.then, label %else
21
22if.then:
23  %tmp3 = icmp sge i8 3, %tmp
24  br i1 %tmp3, label %else, label %end
25
26else:
27  call void @__asan_report_load4(i64 40)
28  call void asm sideeffect "", ""()
29  unreachable
30
31end:
32  %tmp6 = load i32, i32* inttoptr (i64 40 to i32*), align 8
33  %inc = add nsw i32 %tmp6, 1
34  store i32 %inc, i32* inttoptr (i64 40 to i32*), align 8
35  ret void
36}
37
38attributes #0 = { sanitize_address nounwind "frame-pointer"="all" }
39
40declare void @__asan_report_load4(i64)
41