1; RUN: opt -safe-stack -S -mtriple=x86_64-unknown < %s -o - | FileCheck %s
2
3define void @foo() safestack sspreq {
4entry:
5; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
6; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16
7; CHECK: store i8* %[[USST]], i8** @__safestack_unsafe_stack_ptr
8
9; CHECK: %[[A:.*]] = getelementptr i8, i8* %[[USP]], i32 -8
10; CHECK: %[[StackGuardSlot:.*]] = bitcast i8* %[[A]] to i8**
11; CHECK: %[[StackGuard:.*]] = load i8*, i8** @__stack_chk_guard
12; CHECK: store i8* %[[StackGuard]], i8** %[[StackGuardSlot]]
13  %a = alloca i8, align 1
14
15; CHECK: call void @Capture
16  call void @Capture(i8* %a)
17
18; CHECK: %[[B:.*]] = load i8*, i8** %[[StackGuardSlot]]
19; CHECK: %[[COND:.*]] = icmp ne i8* %[[StackGuard]], %[[B]]
20; CHECK: br i1 %[[COND]], {{.*}} !prof
21
22; CHECK:      call void @__stack_chk_fail()
23; CHECK-NEXT: unreachable
24
25; CHECK:      store i8* %[[USP]], i8** @__safestack_unsafe_stack_ptr
26; CHECK-NEXT: ret void
27  ret void
28}
29
30declare void @Capture(i8*)
31