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LLVM stopped using MDString-based type references, and DIBuilder no
longer fills 'retainedTypes:' with every DICompositeType that has an
'identifier:' field. There are just minor changes to keep the same
behaviour in CFE.
Leaving 'retainedTypes:' unfilled has a dramatic impact on the output
order of the IR though. There are a huge number of testcase changes,
which were unfortunately not really scriptable.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@267297 91177308-0d34-0410-b5e6-96231b3b80d8
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Since elements of most kinds of DICompositeType have back references,
most are involved in uniquing cycles. Except via the ODR 'identifier:'
field, which doesn't care about the storage type (see r266549),
they have no hope of being uniqued.
Distinct nodes are far more efficient, so use them for most kinds of
DICompositeType definitions (i.e., when DIType::isForwardDecl is false).
The exceptions:
- DW_TAG_array_type, since their elements never have back-references
and they never have ODR 'identifier:' fields;
- DW_TAG_enumeration_type when there is no ODR 'identifier:' field,
since their elements usually don't have back-references.
This breaks the last major uniquing cycle I'm aware of in the debug info
graph. The impact won't be enormous for C++ because references to
ODR-uniqued nodes still use string-based DITypeRefs; but this should
prevent a regression in C++ when we drop the string-based references.
This wouldn't have been reasonable until r266549, when composite types
stopped relying on being uniqued by structural equivalence to prevent
blow-ups at LTO time.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@266556 91177308-0d34-0410-b5e6-96231b3b80d8
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With this change, most 'g' options are rejected by CompilerInvocation.
They remain only as Driver options. The new way to request debug info
from cc1 is with "-debug-info-kind={line-tables-only|limited|standalone}"
and "-dwarf-version={2|3|4}". In the absence of a command-line option
to specify Dwarf version, the Toolchain decides it, rather than placing
Toolchain-specific logic in CompilerInvocation.
Also fix a bug in the Windows compatibility argument parsing
in which the "rightmost argument wins" principle failed.
Differential Revision: http://reviews.llvm.org/D13221
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@249655 91177308-0d34-0410-b5e6-96231b3b80d8
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LLVM r236120 renamed debug info IR constructs to use a `DI` prefix, now
that the `DIDescriptor` hierarchy has been gone for about a week. This
commit was generated using the rename-md-di-nodes.sh upgrade script
attached to PR23080, followed by running clang-format-diff.py on the
`lib/` portion of the patch.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@236121 91177308-0d34-0410-b5e6-96231b3b80d8
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Update testcases for LLVM change in r231082 to use the new debug info
hierarchy.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@231083 91177308-0d34-0410-b5e6-96231b3b80d8
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Match LLVM changes from r224257.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224259 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit r218917, effectively reapplying r218913. Original
commit message follows.
--
Update debug info testcases for an LLVM metadata schema change to fold
metadata constant operands into a single `MDString`.
Part of PR17891.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@219011 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit r218913 while I investigate some bots.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218917 91177308-0d34-0410-b5e6-96231b3b80d8
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Update debug info testcases for an LLVM metadata schema change to fold
metadata constant operands into a single `MDString`.
Part of PR17891.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218913 91177308-0d34-0410-b5e6-96231b3b80d8
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This makes the C++ ABI depend entirely on the target: MS ABI for -win32 triples,
Itanium otherwise. It's no longer possible to do weird combinations.
To be able to run a test with a specific ABI without constraining it to a
specific triple, new substitutions are added to lit: %itanium_abi_triple and
%ms_abi_triple can be used to get the current target triple adjusted to the
desired ABI. For example, if the test suite is running with the i686-pc-win32
target, %itanium_abi_triple will expand to i686-pc-mingw32.
Differential Revision: http://llvm-reviews.chandlerc.com/D2545
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199250 91177308-0d34-0410-b5e6-96231b3b80d8
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It controls everything that -flimit-debug-info used to, plus the
vtable type optimization. The old -fno-limit-debug-info option is now an
alias to -fstandalone-debug and vice versa.
Standalone is the default on Darwin until dtrace is updated to work with
non-standalone debug info (rdar://problem/15758808).
Note: I kept the LimitedDebugInfo name in CodeGenOptions::DebugInfoKind
because NoStandaloneDebugInfo sounded even more confusing.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198655 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@197281 91177308-0d34-0410-b5e6-96231b3b80d8
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DW_TAG_pointer_type is updated to use DITypeRef.
Paired commit with r192018.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192019 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191968 91177308-0d34-0410-b5e6-96231b3b80d8
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DW_TAG_pointer_type is updated to use DITypeRef.
Paired commit with r191800.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191801 91177308-0d34-0410-b5e6-96231b3b80d8
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We use CXX mangler to generate unique identifier for external C++ struct,
union, class and enum. Types with unique identifier are added to retained
types by DIBuilder.
Testing cases are updated to reflect the unique identifier generated for types.
The order of MDNodes is changed because of retained types and testing cases
are updated accordingly.
Testing case debug-info-uuid.cpp now emits error with Itanium mangler, since
uuid is not yet handled in Itanium mangler. And it will check for the error
message.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189622 91177308-0d34-0410-b5e6-96231b3b80d8
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We had further discussions on how to retain types, whether to do it in front end
or in DIBuilder. And we agree to do it in DIBuilder so front ends
generating unique identifier do not need to worry about retaining them.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189609 91177308-0d34-0410-b5e6-96231b3b80d8
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We use CXX mangler to generate unique identifier for external C++ struct,
union, class and enum. Types with unique identifier are added to RetainedTypes
to make sure they are treated as used even when all uses are replaced with
the identifiers.
A single type can be added to RetainedTypes multiple times. For example, both
createForwardDecl and createLimitedType can add the same type to RetainedTypes.
A set is used to avoid duplication when updating AllRetainTypes in DIBuilder.
Testing cases are updated to reflect the unique identifier generated for types.
The order of MDNodes is changed because of retained types and testing cases
are updated accordingly.
Testing case debug-info-uuid.cpp now emits error with Itanium mangler, since
uuid is not yet handled in Itanium mangler.
We choose to update RetainedTypes in clang, then at finalize(), we update
AllRetainTypes in DIBuilder. The other choice is to update AllRetainTypes
in DIBuilder when creating a DICompositeType with unique identifier. This
option requires using ValueHandle for AllRetainTypes in DIBuilder since
the created DICompositeType can be modified later on by setContainingType etc.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189600 91177308-0d34-0410-b5e6-96231b3b80d8
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variables that have static storage duration, it removes debug info on the
emitted initializer function but not all debug info about this variable.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160659 91177308-0d34-0410-b5e6-96231b3b80d8
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for concrete type in -flimit-debug-info mode. This fixes some of the failures from bs15503.exp tests in gdb testsuite.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143227 91177308-0d34-0410-b5e6-96231b3b80d8
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