forked from OSchip/llvm-project
36 lines
1.1 KiB
LLVM
36 lines
1.1 KiB
LLVM
; Test basic address sanitizer instrumentation.
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;
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; RUN: opt -asan -asan-module -S < %s | FileCheck %s
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target triple = "x86_64-pc-windows-msvc"
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; CHECK: @llvm.global_ctors = {{.*}}@asan.module_ctor
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define i32 @test_load(i32* %a) sanitize_address {
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; First instrumentation in the function must be to load the dynamic shadow
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; address into a local variable.
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; CHECK-LABEL: @test_load
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; CHECK: entry:
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; CHECK-NEXT: %[[SHADOW:[^ ]*]] = load i64, i64* @__asan_shadow_memory_dynamic_address
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; Shadow address is loaded and added into the whole offset computation.
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; CHECK add i64 %{{.*}}, %[[SHADOW] ]
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entry:
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%tmp1 = load i32, i32* %a, align 4
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ret i32 %tmp1
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}
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define i32 @__asan_options(i32* %a) sanitize_address {
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; Asan functions are not instrumented. Asan function may be called by
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; __asan_init before the shadow initialisation, which may lead to incorrect
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; behavior of the instrumented code.
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; CHECK-LABEL: @__asan_options
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; CHECK: entry:
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; CHECK-NEXT: %tmp1 = load i32, i32* %a, align 4
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; CHECK-NEXT: ret i32 %tmp1
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entry:
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%tmp1 = load i32, i32* %a, align 4
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ret i32 %tmp1
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}
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