1; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
2; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s
3
4%struct.__jmp_buf_tag = type { [8 x i64], i32, %struct.__sigset_t }
5%struct.__sigset_t = type { [16 x i64] }
6
7@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
8@buf = internal global [1 x %struct.__jmp_buf_tag] zeroinitializer, align 16
9
10; setjmp/longjmp test with dynamically sized array.
11; Requires protector.
12; CHECK: @foo(i32 %[[ARG:.*]])
13define i32 @foo(i32 %size) nounwind uwtable safestack {
14entry:
15  ; CHECK: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
16  ; CHECK-NEXT: %[[DYNPTR:.*]] = alloca i8*
17  ; CHECK-NEXT: store i8* %[[SP]], i8** %[[DYNPTR]]
18
19  ; CHECK-NEXT: %[[ZEXT:.*]] = zext i32 %[[ARG]] to i64
20  ; CHECK-NEXT: %[[MUL:.*]] = mul i64 %[[ZEXT]], 4
21  ; CHECK-NEXT: %[[SP2:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
22  ; CHECK-NEXT: %[[PTRTOINT:.*]] = ptrtoint i8* %[[SP2]] to i64
23  ; CHECK-NEXT: %[[SUB:.*]] = sub i64 %[[PTRTOINT]], %[[MUL]]
24  ; CHECK-NEXT: %[[AND:.*]] = and i64 %[[SUB]], -16
25  ; CHECK-NEXT: %[[INTTOPTR:.*]] = inttoptr i64 %[[AND]] to i8*
26  ; CHECK-NEXT: store i8* %[[INTTOPTR]], i8** @__safestack_unsafe_stack_ptr
27  ; CHECK-NEXT: store i8* %[[INTTOPTR]], i8** %unsafe_stack_dynamic_ptr
28  ; CHECK-NEXT: %[[ALLOCA:.*]] = bitcast i8* %[[INTTOPTR]] to i32*
29  %a = alloca i32, i32 %size
30
31  ; CHECK: setjmp
32  ; CHECK-NEXT: %[[LOAD:.*]] = load i8*, i8** %[[DYNPTR]]
33  ; CHECK-NEXT: store i8* %[[LOAD]], i8** @__safestack_unsafe_stack_ptr
34  %call = call i32 @_setjmp(%struct.__jmp_buf_tag* getelementptr inbounds ([1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* @buf, i32 0, i32 0)) returns_twice
35
36  ; CHECK: call void @funcall(i32* %[[ALLOCA]])
37  call void @funcall(i32* %a)
38  ; CHECK-NEXT: store i8* %[[SP:.*]], i8** @__safestack_unsafe_stack_ptr
39  ret i32 0
40}
41
42declare i32 @_setjmp(%struct.__jmp_buf_tag*)
43declare void @funcall(i32*)
44