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) sanitize_address {
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) sanitize_address {
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() sanitize_address {
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()
92 ; Check that asan does not touch allocas with alignment > 32.
93 define void @alloca_alignment_test() sanitize_address {
95 %x = alloca [10 x i8], align 64
96 %y = alloca [10 x i8], align 128
97 %z = alloca [10 x i8], align 256
98 call void @alloca_test_use([10 x i8]* %x)
99 call void @alloca_test_use([10 x i8]* %y)
100 call void @alloca_test_use([10 x i8]* %z)
104 ; CHECK: define void @alloca_alignment_test()
105 ; CHECK: = alloca{{.*}} align 64
106 ; CHECK: = alloca{{.*}} align 128
107 ; CHECK: = alloca{{.*}} align 256
111 define void @LongDoubleTest(x86_fp80* nocapture %a) nounwind uwtable sanitize_address {
113 store x86_fp80 0xK3FFF8000000000000000, x86_fp80* %a, align 16
117 ; CHECK: LongDoubleTest
118 ; CHECK: __asan_report_store_n
119 ; CHECK: __asan_report_store_n
123 define void @i40test(i40* %a, i40* %b) nounwind uwtable sanitize_address {
126 store i40 %t, i40* %b, align 8
131 ; CHECK: __asan_report_load_n{{.*}}, i64 5)
132 ; CHECK: __asan_report_load_n{{.*}}, i64 5)
133 ; CHECK: __asan_report_store_n{{.*}}, i64 5)
134 ; CHECK: __asan_report_store_n{{.*}}, i64 5)
137 define void @i80test(i80* %a, i80* %b) nounwind uwtable sanitize_address {
140 store i80 %t, i80* %b, align 8
145 ; CHECK: __asan_report_load_n{{.*}}, i64 10)
146 ; CHECK: __asan_report_load_n{{.*}}, i64 10)
147 ; CHECK: __asan_report_store_n{{.*}}, i64 10)
148 ; CHECK: __asan_report_store_n{{.*}}, i64 10)
151 ; asan should not instrument functions with available_externally linkage.
152 define available_externally i32 @f_available_externally(i32* %a) sanitize_address {
157 ; CHECK: @f_available_externally
158 ; CHECK-NOT: __asan_report