| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 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. |
| 11 | ; Requires protector. |
| 12 | define i32 @foo() nounwind uwtable safestack { |
| 13 | entry: |
| 14 | ; CHECK: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr |
| 15 | ; CHECK: %[[STATICTOP:.*]] = getelementptr i8, i8* %[[SP]], i32 -16 |
| 16 | %retval = alloca i32, align 4 |
| 17 | %x = alloca i32, align 4 |
| 18 | store i32 0, i32* %retval |
| 19 | store i32 42, i32* %x, align 4 |
| 20 | %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 |
| 21 | ; CHECK: setjmp |
| 22 | ; CHECK-NEXT: store i8* %[[STATICTOP]], i8** @__safestack_unsafe_stack_ptr |
| 23 | %tobool = icmp ne i32 %call, 0 |
| 24 | br i1 %tobool, label %if.else, label %if.then |
| 25 | if.then: ; preds = %entry |
| 26 | call void @funcall(i32* %x) |
| 27 | br label %if.end |
| 28 | if.else: ; preds = %entry |
| 29 | call i32 (...) @dummy() |
| 30 | br label %if.end |
| 31 | if.end: ; preds = %if.else, %if.then |
| 32 | ret i32 0 |
| 33 | } |
| 34 | |
| 35 | declare i32 @_setjmp(%struct.__jmp_buf_tag*) |
| 36 | declare void @funcall(i32*) |
| 37 | declare i32 @dummy(...) |