| Chandler Carruth | 663943e | 2012-07-16 08:56:46 +0000 | [diff] [blame] | 1 | ; Test basic address sanitizer instrumentation. |
| 2 | ; |
| 3 | ; RUN: opt < %s -asan -S | FileCheck %s |
| 4 | |
| 5 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| 6 | target triple = "x86_64-unknown-linux-gnu" |
| 7 | |
| 8 | define i32 @test_load(i32* %a) address_safety { |
| 9 | ; CHECK: @test_load |
| 10 | ; CHECK-NOT: load |
| 11 | ; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64 |
| 12 | ; CHECK: lshr i64 %[[LOAD_ADDR]], 3 |
| 13 | ; CHECK: or i64 |
| 14 | ; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr |
| 15 | ; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]] |
| 16 | ; CHECK: icmp ne i8 |
| 17 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 18 | ; |
| Chandler Carruth | 663943e | 2012-07-16 08:56:46 +0000 | [diff] [blame] | 19 | ; First instrumentation block refines the shadow test. |
| 20 | ; CHECK: and i64 %[[LOAD_ADDR]], 7 |
| 21 | ; CHECK: add i64 %{{.*}}, 3 |
| 22 | ; CHECK: trunc i64 %{{.*}} to i8 |
| 23 | ; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]] |
| 24 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 25 | ; |
| Kostya Serebryany | f02c606 | 2012-07-20 09:54:50 +0000 | [diff] [blame] | 26 | ; The crash block reports the error. |
| 27 | ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) |
| 28 | ; CHECK: unreachable |
| 29 | ; |
| Kostya Serebryany | bf47971 | 2012-08-14 14:05:50 +0000 | [diff] [blame] | 30 | ; The actual load. |
| 31 | ; CHECK: %tmp1 = load i32* %a |
| 32 | ; CHECK: ret i32 %tmp1 |
| 33 | |
| Kostya Serebryany | f02c606 | 2012-07-20 09:54:50 +0000 | [diff] [blame] | 34 | |
| Chandler Carruth | 663943e | 2012-07-16 08:56:46 +0000 | [diff] [blame] | 35 | |
| 36 | entry: |
| 37 | %tmp1 = load i32* %a |
| 38 | ret i32 %tmp1 |
| 39 | } |
| 40 | |
| 41 | define void @test_store(i32* %a) address_safety { |
| 42 | ; CHECK: @test_store |
| 43 | ; CHECK-NOT: store |
| 44 | ; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64 |
| 45 | ; CHECK: lshr i64 %[[STORE_ADDR]], 3 |
| 46 | ; CHECK: or i64 |
| 47 | ; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr |
| 48 | ; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8* %[[STORE_SHADOW_PTR]] |
| 49 | ; CHECK: icmp ne i8 |
| 50 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 51 | ; |
| Chandler Carruth | 663943e | 2012-07-16 08:56:46 +0000 | [diff] [blame] | 52 | ; First instrumentation block refines the shadow test. |
| 53 | ; CHECK: and i64 %[[STORE_ADDR]], 7 |
| 54 | ; CHECK: add i64 %{{.*}}, 3 |
| 55 | ; CHECK: trunc i64 %{{.*}} to i8 |
| 56 | ; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]] |
| 57 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 58 | ; |
| Kostya Serebryany | f02c606 | 2012-07-20 09:54:50 +0000 | [diff] [blame] | 59 | ; The crash block reports the error. |
| 60 | ; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]]) |
| 61 | ; CHECK: unreachable |
| 62 | ; |
| Kostya Serebryany | bf47971 | 2012-08-14 14:05:50 +0000 | [diff] [blame] | 63 | ; The actual load. |
| 64 | ; CHECK: store i32 42, i32* %a |
| 65 | ; CHECK: ret void |
| 66 | ; |
| Chandler Carruth | 663943e | 2012-07-16 08:56:46 +0000 | [diff] [blame] | 67 | |
| 68 | entry: |
| 69 | store i32 42, i32* %a |
| 70 | ret void |
| 71 | } |
| Kostya Serebryany | 0995994 | 2012-10-19 06:20:53 +0000 | [diff] [blame^] | 72 | |
| 73 | ; Check that asan leaves just one alloca. |
| 74 | |
| 75 | declare void @alloca_test_use([10 x i8]*) |
| 76 | define void @alloca_test() address_safety { |
| 77 | entry: |
| 78 | %x = alloca [10 x i8], align 1 |
| 79 | %y = alloca [10 x i8], align 1 |
| 80 | %z = alloca [10 x i8], align 1 |
| 81 | call void @alloca_test_use([10 x i8]* %x) |
| 82 | call void @alloca_test_use([10 x i8]* %y) |
| 83 | call void @alloca_test_use([10 x i8]* %z) |
| 84 | ret void |
| 85 | } |
| 86 | |
| 87 | ; CHECK: define void @alloca_test() |
| 88 | ; CHECK: = alloca |
| 89 | ; CHECK-NOT: = alloca |
| 90 | ; CHECK: ret void |
| 91 | |