derek.holloway
7502bf64a4
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29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
; Remove possible memory effects from functions that are invalidated by
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; AddressSanitizer instrumentation.
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; RUN: opt -passes='asan<use-after-scope>' -S %s | FileCheck %s
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; CHECK: @foo(ptr writeonly) #[[ATTRS_FOO:[0-9]+]]
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declare void @foo(ptr writeonly) memory(argmem: write)
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; CHECK: @foo2(ptr writeonly) #[[ATTRS_FOO2:[0-9]+]]
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declare void @foo2(ptr writeonly) memory(argmem: readwrite, inaccessiblemem: write)
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; CHECK: @foo3(ptr) #[[ATTRS_FOO3:[0-9]+]]
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declare void @foo3(ptr) memory(inaccessiblemem: write)
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; CHECK: @bar() #[[ATTRS_BAR:[0-9]+]]
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define void @bar() sanitize_address {
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entry:
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%x = alloca i32, align 4
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call void @llvm.lifetime.start.p0(ptr %x)
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call void @foo(ptr %x)
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call void @llvm.lifetime.end.p0(ptr %x)
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ret void
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}
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; CHECK: attributes #[[ATTRS_FOO]] = { nobuiltin memory(readwrite, argmem: write, inaccessiblemem: none
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; CHECK: attributes #[[ATTRS_FOO2]] = { nobuiltin memory(readwrite, inaccessiblemem: write
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; CHECK: attributes #[[ATTRS_FOO3]] = { memory(inaccessiblemem: write) }
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; CHECK: attributes #[[ATTRS_BAR]] = { sanitize_address }
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