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 ; 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 %{{.*}}
26 ; The crash block reports the error.
27 ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]])
31 ; CHECK: %tmp1 = load i32* %a
32 ; CHECK: ret i32 %tmp1
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 ; 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 %{{.*}}
59 ; The crash block reports the error.
60 ; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]])
64 ; CHECK: store i32 42, i32* %a
73 ; Check that asan leaves just one alloca.
75 declare void @alloca_test_use([10 x i8]*)
76 define void @alloca_test() address_safety {
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)
87 ; CHECK: define void @alloca_test()