| Peter Collingbourne | 82437bf | 2015-06-15 21:07:11 +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 | @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 |
| 5 | |
| 6 | ; Variable sized alloca |
| 7 | ; safestack attribute |
| 8 | ; Requires protector. |
| 9 | define void @foo(i32 %n) nounwind uwtable safestack { |
| 10 | entry: |
| Anna Zaks | cad7994 | 2016-02-02 01:03:11 +0000 | [diff] [blame] | 11 | ; CHECK: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr |
| Peter Collingbourne | 82437bf | 2015-06-15 21:07:11 +0000 | [diff] [blame] | 12 | %n.addr = alloca i32, align 4 |
| 13 | %a = alloca i32*, align 8 |
| 14 | store i32 %n, i32* %n.addr, align 4 |
| 15 | %0 = load i32, i32* %n.addr, align 4 |
| 16 | %conv = sext i32 %0 to i64 |
| 17 | %1 = alloca i8, i64 %conv |
| 18 | %2 = bitcast i8* %1 to i32* |
| 19 | store i32* %2, i32** %a, align 8 |
| Anna Zaks | cad7994 | 2016-02-02 01:03:11 +0000 | [diff] [blame] | 20 | ; CHECK: store i8* %[[SP:.*]], i8** @__safestack_unsafe_stack_ptr |
| Peter Collingbourne | 82437bf | 2015-06-15 21:07:11 +0000 | [diff] [blame] | 21 | ret void |
| 22 | } |