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When the Dwarf Version metadata was initially added (r184276) there was
no support for Module::Max - though the comment suggested that was the
desired behavior. The original behavior was Module::Warn which would
warn and then pick whichever version came first - which is pretty
arbitrary/luck-based if the consumer has some need for one version or
the other.
Now that the functionality's been added (r303590) this change updates
the implementation to match the desired goal.
The general logic here is - if you compile /some/ of your program with a
more recent DWARF version, you must have a consumer that can handle it,
so might as well use it for /everything/.
The only place where this might fall down is if you have a need to use
an old tool (supporting only the older DWARF version) for some subset of
your program. In which case now it'll all be the higher version. That
seems pretty narrow (& the inverse could happen too - you specifically
/need/ the higher DWARF version for some extra expressivity, etc, in
some part of the program)
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hardcoded/aliased to -gdwarf-4
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Summary:
If you're using the Microsoft ABI, chances are that you want PDBs and
codeview debug info. Currently, everyone has to remember to specific
-gcodeview by default, when it would be nice if the standard -g option
did the right thing by default.
Also, do some related cleanup of -cc1 options. When targetting the MS
C++ ABI, we probably shouldn't pass -debugger-tuning=gdb. We were also
passing -gcodeview twice, which is silly.
Reviewers: smeenai, zturner
Subscribers: aprantl, JDevlieghere, llvm-commits
Differential Revision: https://reviews.llvm.org/D54499
llvm-svn: 346907
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target.
This fixes the green dragon builders after r284416.
llvm-svn: 284423
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llvm-svn: 284417
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This is a spiritual re-commit of r201375 with only a brief delay
for upgrading the green dragon builders.
llvm-svn: 281094
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the front end as well.
Note that DWARF5 isn't finalized and any feature support is subject to
change and accepting of the option doesn't mean we're supporting the
full range of the current standard.
llvm-svn: 256516
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Summary:
By default, 'clang' emits dwarf and 'clang-cl' emits codeview. You can
force emission of one or both by passing -gcodeview and -gdwarf to
either driver.
Reviewers: dblaikie, hans
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D11742
llvm-svn: 244097
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Match LLVM changes from r224257.
llvm-svn: 224259
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llvm-svn: 219901
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The Tools.cpp part of the patch partially based on a patch from
FreeBSD's LLVM tree.
llvm-svn: 210883
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I'm holding this change to give maintainers of Darwin buildbots more time
to update their toolchains.
This reverts commit r201375.
llvm-svn: 201520
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llvm-svn: 201375
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llvm-svn: 189823
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Darwin systems currently do not support dwarf version 3 or above. When we are
ready, we can bump the default to gdwarf-4 for Darwin.
For other systems, the default is dwarf version 3, if everything goes smoothly,
we can bump the version to 4.
rdar://13591116
llvm-svn: 185483
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These options will add a module flag with name "Dwarf Version".
The behavior flag is currently set to Warning, so when two values disagree,
a warning will be emitted.
llvm-svn: 184276
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