forked from OSchip/llvm-project
178 lines
5.1 KiB
LLVM
178 lines
5.1 KiB
LLVM
; Test basic address sanitizer instrumentation.
|
|
;
|
|
; RUN: opt < %s -asan -asan-module -S | FileCheck %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 triple = "x86_64-unknown-linux-gnu"
|
|
; CHECK: @llvm.global_ctors = {{.*}}@asan.module_ctor
|
|
|
|
define i32 @test_load(i32* %a) sanitize_address {
|
|
; CHECK-LABEL: @test_load
|
|
; CHECK-NOT: load
|
|
; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
|
|
; CHECK: lshr i64 %[[LOAD_ADDR]], 3
|
|
; CHECK: {{or|add}}
|
|
; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
|
|
; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8, i8* %[[LOAD_SHADOW_PTR]]
|
|
; CHECK: icmp ne i8
|
|
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}!prof ![[PROF:[0-9]+]]
|
|
;
|
|
; First instrumentation block refines the shadow test.
|
|
; CHECK: and i64 %[[LOAD_ADDR]], 7
|
|
; CHECK: add i64 %{{.*}}, 3
|
|
; CHECK: trunc i64 %{{.*}} to i8
|
|
; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]]
|
|
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
|
|
;
|
|
; The crash block reports the error.
|
|
; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]])
|
|
; CHECK: unreachable
|
|
;
|
|
; The actual load.
|
|
; CHECK: %tmp1 = load i32, i32* %a
|
|
; CHECK: ret i32 %tmp1
|
|
|
|
|
|
|
|
entry:
|
|
%tmp1 = load i32, i32* %a, align 4
|
|
ret i32 %tmp1
|
|
}
|
|
|
|
define void @test_store(i32* %a) sanitize_address {
|
|
; CHECK-LABEL: @test_store
|
|
; CHECK-NOT: store
|
|
; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
|
|
; CHECK: lshr i64 %[[STORE_ADDR]], 3
|
|
; CHECK: {{or|add}}
|
|
; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
|
|
; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8, i8* %[[STORE_SHADOW_PTR]]
|
|
; CHECK: icmp ne i8
|
|
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
|
|
;
|
|
; First instrumentation block refines the shadow test.
|
|
; CHECK: and i64 %[[STORE_ADDR]], 7
|
|
; CHECK: add i64 %{{.*}}, 3
|
|
; CHECK: trunc i64 %{{.*}} to i8
|
|
; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]]
|
|
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
|
|
;
|
|
; The crash block reports the error.
|
|
; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]])
|
|
; CHECK: unreachable
|
|
;
|
|
; The actual load.
|
|
; CHECK: store i32 42, i32* %a
|
|
; CHECK: ret void
|
|
;
|
|
|
|
entry:
|
|
store i32 42, i32* %a, align 4
|
|
ret void
|
|
}
|
|
|
|
; Check that asan leaves just one alloca.
|
|
|
|
declare void @alloca_test_use([10 x i8]*)
|
|
define void @alloca_test() sanitize_address {
|
|
entry:
|
|
%x = alloca [10 x i8], align 1
|
|
%y = alloca [10 x i8], align 1
|
|
%z = alloca [10 x i8], align 1
|
|
call void @alloca_test_use([10 x i8]* %x)
|
|
call void @alloca_test_use([10 x i8]* %y)
|
|
call void @alloca_test_use([10 x i8]* %z)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define void @alloca_test()
|
|
; CHECK: = alloca
|
|
; CHECK-NOT: = alloca
|
|
; CHECK: ret void
|
|
|
|
define void @LongDoubleTest(x86_fp80* nocapture %a) nounwind uwtable sanitize_address {
|
|
entry:
|
|
store x86_fp80 0xK3FFF8000000000000000, x86_fp80* %a, align 16
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: LongDoubleTest
|
|
; CHECK: __asan_report_store_n
|
|
; CHECK: __asan_report_store_n
|
|
; CHECK: ret void
|
|
|
|
|
|
define void @i40test(i40* %a, i40* %b) nounwind uwtable sanitize_address {
|
|
entry:
|
|
%t = load i40, i40* %a
|
|
store i40 %t, i40* %b, align 8
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: i40test
|
|
; CHECK: __asan_report_load_n{{.*}}, i64 5)
|
|
; CHECK: __asan_report_load_n{{.*}}, i64 5)
|
|
; CHECK: __asan_report_store_n{{.*}}, i64 5)
|
|
; CHECK: __asan_report_store_n{{.*}}, i64 5)
|
|
; CHECK: ret void
|
|
|
|
define void @i64test_align1(i64* %b) nounwind uwtable sanitize_address {
|
|
entry:
|
|
store i64 0, i64* %b, align 1
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: i64test_align1
|
|
; CHECK: __asan_report_store_n{{.*}}, i64 8)
|
|
; CHECK: __asan_report_store_n{{.*}}, i64 8)
|
|
; CHECK: ret void
|
|
|
|
|
|
define void @i80test(i80* %a, i80* %b) nounwind uwtable sanitize_address {
|
|
entry:
|
|
%t = load i80, i80* %a
|
|
store i80 %t, i80* %b, align 8
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: i80test
|
|
; CHECK: __asan_report_load_n{{.*}}, i64 10)
|
|
; CHECK: __asan_report_load_n{{.*}}, i64 10)
|
|
; CHECK: __asan_report_store_n{{.*}}, i64 10)
|
|
; CHECK: __asan_report_store_n{{.*}}, i64 10)
|
|
; CHECK: ret void
|
|
|
|
; asan should not instrument functions with available_externally linkage.
|
|
define available_externally i32 @f_available_externally(i32* %a) sanitize_address {
|
|
entry:
|
|
%tmp1 = load i32, i32* %a
|
|
ret i32 %tmp1
|
|
}
|
|
; CHECK-LABEL: @f_available_externally
|
|
; CHECK-NOT: __asan_report
|
|
; CHECK: ret i32
|
|
|
|
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
|
|
declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) nounwind
|
|
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) nounwind
|
|
|
|
define void @memintr_test(i8* %a, i8* %b) nounwind uwtable sanitize_address {
|
|
entry:
|
|
tail call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 100, i32 1, i1 false)
|
|
tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %a, i8* %b, i64 100, i32 1, i1 false)
|
|
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 100, i32 1, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: memintr_test
|
|
; CHECK: __asan_memset
|
|
; CHECK: __asan_memmove
|
|
; CHECK: __asan_memcpy
|
|
; CHECK: ret void
|
|
|
|
; CHECK: define internal void @asan.module_ctor()
|
|
; CHECK: call void @__asan_init()
|
|
|
|
; PROF
|
|
; CHECK: ![[PROF]] = !{!"branch_weights", i32 1, i32 100000}
|