| Evgeniy Stepanov | 447bbdb | 2015-11-13 21:21:42 +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 | define void @bad_store() nounwind uwtable safestack { |
| 7 | entry: |
| 8 | ; CHECK-LABEL: @bad_store( |
| 9 | ; CHECK: __safestack_unsafe_stack_ptr |
| 10 | ; CHECK: ret void |
| 11 | %a = alloca i32, align 4 |
| 12 | %0 = ptrtoint i32* %a to i64 |
| 13 | %1 = inttoptr i64 %0 to i64* |
| 14 | store i64 zeroinitializer, i64* %1 |
| 15 | ret void |
| 16 | } |
| 17 | |
| 18 | define void @good_store() nounwind uwtable safestack { |
| 19 | entry: |
| 20 | ; CHECK-LABEL: @good_store( |
| 21 | ; CHECK-NOT: __safestack_unsafe_stack_ptr |
| 22 | ; CHECK: ret void |
| 23 | %a = alloca i32, align 4 |
| 24 | %0 = bitcast i32* %a to i8* |
| 25 | store i8 zeroinitializer, i8* %0 |
| 26 | ret void |
| 27 | } |
| 28 | |
| 29 | define void @overflow_gep_store() nounwind uwtable safestack { |
| 30 | entry: |
| 31 | ; CHECK-LABEL: @overflow_gep_store( |
| 32 | ; CHECK: __safestack_unsafe_stack_ptr |
| 33 | ; CHECK: ret void |
| 34 | %a = alloca i32, align 4 |
| 35 | %0 = bitcast i32* %a to i8* |
| 36 | %1 = getelementptr i8, i8* %0, i32 4 |
| 37 | store i8 zeroinitializer, i8* %1 |
| 38 | ret void |
| 39 | } |
| 40 | |
| 41 | define void @underflow_gep_store() nounwind uwtable safestack { |
| 42 | entry: |
| 43 | ; CHECK-LABEL: @underflow_gep_store( |
| 44 | ; CHECK: __safestack_unsafe_stack_ptr |
| 45 | ; CHECK: ret void |
| 46 | %a = alloca i32, align 4 |
| 47 | %0 = bitcast i32* %a to i8* |
| 48 | %1 = getelementptr i8, i8* %0, i32 -1 |
| 49 | store i8 zeroinitializer, i8* %1 |
| 50 | ret void |
| 51 | } |
| 52 | |
| 53 | define void @good_gep_store() nounwind uwtable safestack { |
| 54 | entry: |
| 55 | ; CHECK-LABEL: @good_gep_store( |
| 56 | ; CHECK-NOT: __safestack_unsafe_stack_ptr |
| 57 | ; CHECK: ret void |
| 58 | %a = alloca i32, align 4 |
| 59 | %0 = bitcast i32* %a to i8* |
| 60 | %1 = getelementptr i8, i8* %0, i32 3 |
| 61 | store i8 zeroinitializer, i8* %1 |
| 62 | ret void |
| 63 | } |