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 ; 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 ; 26 ; The crash block reports the error. 27 ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) 28 ; CHECK: unreachable 29 ; 30 ; The actual load. 31 ; CHECK: %tmp1 = load i32* %a 32 ; CHECK: ret i32 %tmp1 33 34 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 ; 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 ; 59 ; The crash block reports the error. 60 ; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]]) 61 ; CHECK: unreachable 62 ; 63 ; The actual load. 64 ; CHECK: store i32 42, i32* %a 65 ; CHECK: ret void 66 ; 67 68 entry: 69 store i32 42, i32* %a 70 ret void 71 } 72