1 ; Test basic address sanitizer instrumentation.
3 ; RUN: opt < %s -asan -S | FileCheck %s
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"
8 define i32 @test_load(i32* %a) address_safety {
11 ; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
12 ; CHECK: lshr i64 %[[LOAD_ADDR]], 3
14 ; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
15 ; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]]
17 ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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
24 ; The crash block reports the error.
25 ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) noreturn
28 ; First instrumentation block refines the shadow test.
29 ; CHECK: and i64 %[[LOAD_ADDR]], 7
30 ; CHECK: add i64 %{{.*}}, 3
31 ; CHECK: trunc i64 %{{.*}} to i8
32 ; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]]
33 ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
41 define void @test_store(i32* %a) address_safety {
44 ; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
45 ; CHECK: lshr i64 %[[STORE_ADDR]], 3
47 ; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
48 ; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8* %[[STORE_SHADOW_PTR]]
50 ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
52 ; The actual store comes next because ASan adds the last instrumentation block
53 ; to the end of the function.
54 ; CHECK: store i32 42, i32* %a
57 ; The crash block reports the error.
58 ; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]]) noreturn
61 ; First instrumentation block refines the shadow test.
62 ; CHECK: and i64 %[[STORE_ADDR]], 7
63 ; CHECK: add i64 %{{.*}}, 3
64 ; CHECK: trunc i64 %{{.*}} to i8
65 ; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]]
66 ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}