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https://github.com/c64scene-ar/llvm-6502.git
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bd0052a0f2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166267 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
2.5 KiB
LLVM
92 lines
2.5 KiB
LLVM
; Test basic address sanitizer instrumentation.
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;
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; RUN: opt < %s -asan -S | FileCheck %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @test_load(i32* %a) address_safety {
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; CHECK: @test_load
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; CHECK-NOT: load
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; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
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; CHECK: lshr i64 %[[LOAD_ADDR]], 3
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; CHECK: or i64
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; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
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; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]]
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; CHECK: icmp ne i8
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; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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;
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; First instrumentation block refines the shadow test.
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; CHECK: and i64 %[[LOAD_ADDR]], 7
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; CHECK: add i64 %{{.*}}, 3
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; CHECK: trunc i64 %{{.*}} to i8
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; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]]
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; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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;
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; The crash block reports the error.
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; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]])
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; CHECK: unreachable
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;
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; The actual load.
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; CHECK: %tmp1 = load i32* %a
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; CHECK: ret i32 %tmp1
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entry:
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%tmp1 = load i32* %a
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ret i32 %tmp1
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}
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define void @test_store(i32* %a) address_safety {
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; CHECK: @test_store
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; CHECK-NOT: store
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; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
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; CHECK: lshr i64 %[[STORE_ADDR]], 3
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; CHECK: or i64
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; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
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; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8* %[[STORE_SHADOW_PTR]]
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; CHECK: icmp ne i8
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; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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;
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; First instrumentation block refines the shadow test.
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; CHECK: and i64 %[[STORE_ADDR]], 7
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; CHECK: add i64 %{{.*}}, 3
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; CHECK: trunc i64 %{{.*}} to i8
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; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]]
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; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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;
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; The crash block reports the error.
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; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]])
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; CHECK: unreachable
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;
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; The actual load.
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; CHECK: store i32 42, i32* %a
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; CHECK: ret void
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;
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entry:
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store i32 42, i32* %a
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ret void
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}
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; Check that asan leaves just one alloca.
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declare void @alloca_test_use([10 x i8]*)
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define void @alloca_test() address_safety {
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entry:
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%x = alloca [10 x i8], align 1
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%y = alloca [10 x i8], align 1
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%z = alloca [10 x i8], align 1
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call void @alloca_test_use([10 x i8]* %x)
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call void @alloca_test_use([10 x i8]* %y)
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call void @alloca_test_use([10 x i8]* %z)
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ret void
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}
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; CHECK: define void @alloca_test()
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; CHECK: = alloca
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; CHECK-NOT: = alloca
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; CHECK: ret void
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