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r340079 | rnk | 2018-08-17 13:59:27 -0700 (Fri, 17 Aug 2018) | 20 lines
[MS] Mangle a hash of the main file path into anonymous namespaces
Summary:
This is needed to avoid conflicts in mangled names for codeview types in
anonymous namespaces. In CodeView, types refer to each other typically
through forward declarations, which contain mangled names. These names
have to be unique, otherwise the debugger will look up the mangled name
and find the wrong definition.
Furthermore, ThinLTO will deduplicate the types, and debug info
verification can fail when the types have the wrong sizes. This is
PR38608.
Fixes PR38609.
Reviewers: majnemer, inglorion, hans
Subscribers: mehdi_amini, aprantl, JDevlieghere, dexonsmith, cfe-commits
Differential Revision: https://reviews.llvm.org/D50877
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_70@340087 91177308-0d34-0410-b5e6-96231b3b80d8
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It is not needed after LLVM r327734. Now it will be easier to copy-paste
IR symbol names from Clang.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@327738 91177308-0d34-0410-b5e6-96231b3b80d8
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The tests that failed on a windows host have been fixed.
Original message:
Start setting dso_local for COFF.
With this there are still some GVs where we don't set dso_local
because setGVProperties is never called. I intend to fix that in
followup commits. This is just the bare minimum to teach
shouldAssumeDSOLocal what it should do for COFF.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@325940 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit r325915.
It will take some time to fix the failures on a windows host.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@325929 91177308-0d34-0410-b5e6-96231b3b80d8
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With this there are still some GVs where we don't set dso_local
because setGVProperties is never called. I intend to fix that in
followup commits. This is just the bare minimum to teach
shouldAssumeDSOLocal what it should do for COFF.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@325915 91177308-0d34-0410-b5e6-96231b3b80d8
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details in http://reviews.llvm.org/D9483
goes with llvm checkin r237150
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@237151 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@225303 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This pragma is very rare. We could *hypothetically* lower some uses of
it down to @llvm.global_ctors, but given that GlobalOpt isn't able to
optimize prioritized global ctors today, there's really no point.
If we wanted to do this in the future, I would check if the section used
in the pragma started with ".CRT$XC" and had up to two characters after
it. Those two characters could form the 16-bit initialization priority
that we support in @llvm.global_ctors. We would have to teach LLVM to
lower prioritized global ctors on COFF as well.
This should let us compile some silly uses of this pragma in WebKit /
Blink.
Reviewers: rsmith, majnemer
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4549
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213593 91177308-0d34-0410-b5e6-96231b3b80d8
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By ignoring this pragma with a warning, we're essentially miscompiling
the user's program. WebKit / Blink use this pragma to disable dynamic
initialization and finalization of some static data, and running the
dtors crashes the program.
Error out for now, so that /fallback compiles the TU correctly with
MSVC. This pragma should be implemented some time this month, and we
can remove this hack.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@205554 91177308-0d34-0410-b5e6-96231b3b80d8
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