| 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 | ; |
| 19 | ; The actual load comes next because ASan adds the last instrumentation block |
| 20 | ; to the end of the function. |
| 21 | ; CHECK: %tmp1 = load i32* %a |
| 22 | ; CHECK: ret i32 %tmp1 |
| 23 | ; |
| 24 | ; First instrumentation block refines the shadow test. |
| 25 | ; CHECK: and i64 %[[LOAD_ADDR]], 7 |
| 26 | ; CHECK: add i64 %{{.*}}, 3 |
| 27 | ; CHECK: trunc i64 %{{.*}} to i8 |
| 28 | ; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]] |
| 29 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 30 | ; |
| 31 | ; Final instrumentation block reports the error. |
| 32 | ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) noreturn |
| 33 | ; CHECK: unreachable |
| 34 | |
| 35 | entry: |
| 36 | %tmp1 = load i32* %a |
| 37 | ret i32 %tmp1 |
| 38 | } |
| 39 | |
| 40 | define void @test_store(i32* %a) address_safety { |
| 41 | ; CHECK: @test_store |
| 42 | ; CHECK-NOT: store |
| 43 | ; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64 |
| 44 | ; CHECK: lshr i64 %[[STORE_ADDR]], 3 |
| 45 | ; CHECK: or i64 |
| 46 | ; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr |
| 47 | ; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8* %[[STORE_SHADOW_PTR]] |
| 48 | ; CHECK: icmp ne i8 |
| 49 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 50 | ; |
| 51 | ; The actual store comes next because ASan adds the last instrumentation block |
| 52 | ; to the end of the function. |
| 53 | ; CHECK: store i32 42, i32* %a |
| 54 | ; CHECK: ret void |
| 55 | ; |
| 56 | ; First instrumentation block refines the shadow test. |
| 57 | ; CHECK: and i64 %[[STORE_ADDR]], 7 |
| 58 | ; CHECK: add i64 %{{.*}}, 3 |
| 59 | ; CHECK: trunc i64 %{{.*}} to i8 |
| 60 | ; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]] |
| 61 | ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} |
| 62 | ; |
| 63 | ; Final instrumentation block reports the error. |
| 64 | ; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]]) noreturn |
| 65 | ; CHECK: unreachable |
| 66 | |
| 67 | entry: |
| 68 | store i32 42, i32* %a |
| 69 | ret void |
| 70 | } |