Commit Graph

28 Commits

Author SHA1 Message Date
Eric Christopher a6b96004b5 Reorganize the C API headers to improve build times.
Type specific declarations have been moved to Type.h and error handling
routines have been moved to ErrorHandling.h. Both are included in Core.h
so nothing should change for projects directly including the headers,
but transitive dependencies may be affected.

llvm-svn: 255965
2015-12-18 01:46:52 +00:00
Rafael Espindola 434e956181 Change linkInModule to take a std::unique_ptr.
Passing in a std::unique_ptr should help find errors when the module
is used after being linked into another module.

llvm-svn: 255842
2015-12-16 23:16:33 +00:00
Rafael Espindola 9d2bfc4874 Use diagnostic handler in the LLVMContext
This patch converts code that has access to a LLVMContext to not take a
diagnostic handler.

This has a few advantages

* It is easier to use a consistent diagnostic handler in a single program.
* Less clutter since we are not passing a handler around.

It does make it a bit awkward to implement some C APIs that return a
diagnostic string. I will propose new versions of these APIs and
deprecate the current ones.

llvm-svn: 255571
2015-12-14 23:17:03 +00:00
Rafael Espindola f49a38fc08 Always pass a diagnostic handler to the linker.
Before this patch the diagnostic handler was optional. If it was not
passed, the one in the LLVMContext was used.

That is probably not a pattern we want to follow. If each area has an
optional callback, there is a sea of callbacks and it is hard to follow
which one is called.

Doing this also found cases where the callback is a nice addition, like
testing that no errors or warnings are reported.

The other option is to always use the diagnostic handler in the
LLVMContext. That has a few problems

* To implement the C API we would have to set the diag handler and then
  set it back to the original value.
* Code that creates the context might be far away from code that wants
  the diagnostics.

I do have a patch that implements the second option and will send that as
an RFC.

llvm-svn: 254777
2015-12-04 22:08:53 +00:00
Rafael Espindola 0e309fe860 Use references now that it is natural to do so.
The linker never takes ownership of a module or changes which module it
is refering to, making it natural to use references.

llvm-svn: 254449
2015-12-01 19:50:54 +00:00
Duncan P. N. Exon Smith c8925b1871 unittests: Remove implicit ilist iterator conversions, NFC
llvm-svn: 250843
2015-10-20 18:30:20 +00:00
Duncan P. N. Exon Smith 4fb46cb818 Linker: Move distinct MDNodes instead of cloning
Instead of cloning distinct `MDNode`s when linking in a module, just
move them over.  The module linker destroys the source module, so the
old node would otherwise just be leaked on the context.  Create the new
node in place.  This also reduces the number of cloned uniqued nodes
(since it's less likely their operands have changed).

This mapping strategy is only correct when we're discarding the source,
so the linker turns it on via a ValueMapper flag, `RF_MoveDistinctMDs`.

There's nothing observable in terms of `llvm-link` output here: the
linked module should be semantically identical.

I'll be adding more 'distinct' nodes to the debug info metadata graph in
order to break uniquing cycles, so the benefits of this will partly come
in future commits.  However, we should get some gains immediately, since
we have a fair number of 'distinct' `DILocation`s being linked in.

llvm-svn: 243883
2015-08-03 17:09:38 +00:00
Benjamin Kramer f1d570d4c5 [LinkerTest] Use LLVMDisposeMessage to free error string.
LLVMDisposeMessage is just a thing wrapper around free at the moment, but it's
the proper API to use here.

llvm-svn: 239731
2015-06-15 15:42:26 +00:00
Benjamin Kramer a4b87dbd8d [LinkerTest] Don't leak error string.
llvm-svn: 239673
2015-06-13 12:53:21 +00:00
Eli Bendersky ff715e2d5e Fix returning error message in LLVMLinkModules
On error, the temporary output stream wouldn't be flushed and therefore the
caller would see an empty error message.

Patch by Antoine Pitrou

Differential Revision: http://reviews.llvm.org/D10241 

llvm-svn: 239646
2015-06-12 23:26:42 +00:00
Alexander Kornienko f817c1cb9a Use 'override/final' instead of 'virtual' for overridden methods
The patch is generated using clang-tidy misc-use-override check.

This command was used:

  tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py \
    -checks='-*,misc-use-override' -header-filter='llvm|clang' \
    -j=32 -fix -format

http://reviews.llvm.org/D8925

llvm-svn: 234679
2015-04-11 02:11:45 +00:00
David Blaikie 156d46eda0 Opaque Pointer Types: GEP API migrations to specify the gep type explicitly
The changes to InstCombine (& SCEV) do seem a bit silly - it doesn't make
anything obviously better to have the caller access the pointers element
type (the thing I'm trying to remove) than the GEP itself, but it's a
helpful migration step. This will allow me to more obviously lock down
GEP (& Load, etc) API usage, then fix all the code that accesses pointer
element types except the places that need to be removed (most of the
InstCombines) anyway - at which point I'll need to just remove all that
code because it won't be meaningful anymore (there will be no pointer
types, so no bitcasts to combine)

SCEV looks like it'll need some restructuring - we'll have to do a bit
more work for GEP canonicalization, since it'll depend on how it's used
if we can even manage to canonicalize it to a non-ugly GEP. I guess we
can do some fun stuff like voting (do 2 out of 3 load from the GEP with
a certain type that gives a pretty GEP? Does every typed use of the GEP
use either a specific type or a generic type (i8*, etc)?)

llvm-svn: 233131
2015-03-24 23:34:31 +00:00
Chandler Carruth d9903888d9 [cleanup] Re-sort all the #include lines in LLVM using
utils/sort_includes.py.

I clearly haven't done this in a while, so more changed than usual. This
even uncovered a missing include from the InstrProf library that I've
added. No functionality changed here, just mechanical cleanup of the
include order.

llvm-svn: 225974
2015-01-14 11:23:27 +00:00
Rafael Espindola 78873a3f66 Fix the autoconf build.
llvm-svn: 222173
2014-11-17 21:06:38 +00:00
Rafael Espindola 5cb9c82a5d Factor common code it Linker::init.
The TypeFinder was not being used in one of the constructors.

llvm-svn: 222172
2014-11-17 20:51:01 +00:00
Rafael Espindola 9f8eff31db Remove the PreserveSource linker mode.
I noticed that it was untested, and forcing it on caused some tests to fail:

    LLVM :: Linker/metadata-a.ll
    LLVM :: Linker/prefixdata.ll
    LLVM :: Linker/type-unique-odr-a.ll
    LLVM :: Linker/type-unique-simple-a.ll
    LLVM :: Linker/type-unique-simple2-a.ll
    LLVM :: Linker/type-unique-simple2.ll
    LLVM :: Linker/type-unique-type-array-a.ll
    LLVM :: Linker/unnamed-addr1-a.ll
    LLVM :: Linker/visibility1.ll

If it is to be resurrected, it has to be fixed and we should probably have a
-preserve-source command line option in llvm-mc and run tests with and without
it.

llvm-svn: 220741
2014-10-28 00:24:16 +00:00
Rafael Espindola d12b4a334b Update the error handling of lib/Linker.
Instead of passing a std::string&, use the new diagnostic infrastructure.

llvm-svn: 220608
2014-10-25 04:06:10 +00:00
Craig Topper 66f09ad041 [C++11] Use 'nullptr'.
llvm-svn: 210442
2014-06-08 22:29:17 +00:00
NAKAMURA Takumi 0f250ed55f LinkModulesTest.cpp: Reformat.
llvm-svn: 207537
2014-04-29 15:52:46 +00:00
NAKAMURA Takumi b49b99b8f0 LinkModulesTest.cpp: Use test-specific Ctx instead of getGlobalContext(). The global context might not be free'd. [vg_leak]
llvm-svn: 207535
2014-04-29 15:52:27 +00:00
Ahmed Charles 56440fd820 Replace OwningPtr<T> with std::unique_ptr<T>.
This compiles with no changes to clang/lld/lldb with MSVC and includes
overloads to various functions which are used by those projects and llvm
which have OwningPtr's as parameters. This should allow out of tree
projects some time to move. There are also no changes to libs/Target,
which should help out of tree targets have time to move, if necessary.

llvm-svn: 203083
2014-03-06 05:51:42 +00:00
Chandler Carruth 6cc07df4ec [Layering] Sink Linker.h into a Linker subdirectory to make it
consistent with every other sub-library header in LLVM.

llvm-svn: 203065
2014-03-06 03:42:23 +00:00
Chandler Carruth 442f784814 [cleanup] Re-sort all the includes with utils/sort_includes.py.
llvm-svn: 202811
2014-03-04 10:07:28 +00:00
Bill Wendling 91686d6dee Reapply r194218 with fix:
Move copying of global initializers below the cloning of functions.

The BlockAddress doesn't have access to the correct basic blocks until the
functions have been cloned. This causes the BlockAddress to point to the old
values. Just wait until the functions have been cloned before copying the
initializers.
PR13163

llvm-svn: 199354
2014-01-16 06:29:36 +00:00
Adrian Prantl a473a2ba19 Revert "Move copying of global initializers below the cloning of functions."
This would cause internal symbols that are only referenced by global initializers to be removed.

This reverts commit 194219.

llvm-svn: 194304
2013-11-09 00:43:18 +00:00
Adrian Prantl c6e97f66c1 Revert "Run clang-format on file."
This reverts commit 194219.

llvm-svn: 194303
2013-11-09 00:43:12 +00:00
Bill Wendling b805c68f4d Run clang-format on file.
llvm-svn: 194219
2013-11-07 20:18:21 +00:00
Bill Wendling 8890460431 Move copying of global initializers below the cloning of functions.
The BlockAddress doesn't have access to the correct basic blocks until the
functions have been cloned. This causes the BlockAddress to point to the old
values. Just wait until the functions have been cloned before copying the
initializers.
PR13163

llvm-svn: 194218
2013-11-07 20:14:51 +00:00