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llvm/trunk/test/Instrumentation/AddressSanitizer/basic.ll

; Test basic address sanitizer instrumentation. ; Test basic address sanitizer instrumentation.
; ;
; RUN: opt < %s -asan -asan-module -S | FileCheck %s ; RUN: opt < %s -asan -asan-module -S | FileCheck --check-prefixes=CHECK,CHECK-S3 %s
; RUN: opt < %s -asan -asan-module -asan-mapping-scale=5 -S | FileCheck --check-prefixes=CHECK,CHECK-S5 %s
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" 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"
target triple = "x86_64-unknown-linux-gnu" target triple = "x86_64-unknown-linux-gnu"
; CHECK: @llvm.global_ctors = {{.*}}@asan.module_ctor ; CHECK: @llvm.global_ctors = {{.*}}@asan.module_ctor
define i32 @test_load(i32* %a) sanitize_address { define i32 @test_load(i32* %a) sanitize_address {
; CHECK-LABEL: @test_load ; CHECK-LABEL: @test_load
; CHECK-NOT: load ; CHECK-NOT: load
; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64 ; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
; CHECK: lshr i64 %[[LOAD_ADDR]], 3 ; CHECK-S3: lshr i64 %[[LOAD_ADDR]], 3
; CHECK-S5: lshr i64 %[[LOAD_ADDR]], 5
; CHECK: {{or|add}} ; CHECK: {{or|add}}
; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr ; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8, i8* %[[LOAD_SHADOW_PTR]] ; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8, i8* %[[LOAD_SHADOW_PTR]]
; CHECK: icmp ne i8 ; CHECK: icmp ne i8
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}!prof ![[PROF:[0-9]+]] ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}!prof ![[PROF:[0-9]+]]
; ;
; First instrumentation block refines the shadow test. ; First instrumentation block refines the shadow test.
; CHECK: and i64 %[[LOAD_ADDR]], 7 ; CHECK-S3: and i64 %[[LOAD_ADDR]], 7
; CHECK-S5: and i64 %[[LOAD_ADDR]], 31
; CHECK: add i64 %{{.*}}, 3 ; CHECK: add i64 %{{.*}}, 3
; CHECK: trunc i64 %{{.*}} to i8 ; CHECK: trunc i64 %{{.*}} to i8
; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]] ; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]]
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
; ;
; The crash block reports the error. ; The crash block reports the error.
; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]])
; CHECK: unreachable ; CHECK: unreachable
; ;
; The actual load. ; The actual load.
; CHECK: %tmp1 = load i32, i32* %a ; CHECK: %tmp1 = load i32, i32* %a
; CHECK: ret i32 %tmp1 ; CHECK: ret i32 %tmp1
entry: entry:
%tmp1 = load i32, i32* %a, align 4 %tmp1 = load i32, i32* %a, align 4
ret i32 %tmp1 ret i32 %tmp1
} }
define void @test_store(i32* %a) sanitize_address { define void @test_store(i32* %a) sanitize_address {
; CHECK-LABEL: @test_store ; CHECK-LABEL: @test_store
; CHECK-NOT: store ; CHECK-NOT: store
; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64 ; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
; CHECK: lshr i64 %[[STORE_ADDR]], 3 ; CHECK-S3: lshr i64 %[[STORE_ADDR]], 3
; CHECK-S5: lshr i64 %[[STORE_ADDR]], 5
; CHECK: {{or|add}} ; CHECK: {{or|add}}
; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr ; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8, i8* %[[STORE_SHADOW_PTR]] ; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8, i8* %[[STORE_SHADOW_PTR]]
; CHECK: icmp ne i8 ; CHECK: icmp ne i8
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
; ;
; First instrumentation block refines the shadow test. ; First instrumentation block refines the shadow test.
; CHECK: and i64 %[[STORE_ADDR]], 7 ; CHECK-S3: and i64 %[[STORE_ADDR]], 7
; CHECK-S5: and i64 %[[STORE_ADDR]], 31
; CHECK: add i64 %{{.*}}, 3 ; CHECK: add i64 %{{.*}}, 3
; CHECK: trunc i64 %{{.*}} to i8 ; CHECK: trunc i64 %{{.*}} to i8
; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]] ; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]]
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
; ;
; The crash block reports the error. ; The crash block reports the error.
; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]]) ; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]])
; CHECK: unreachable ; CHECK: unreachable
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