When we create a crashdump involving modules, we build a VFS to
reproduce the problem with. This updates the reproduction script to
use that VFS.
llvm-svn: 211876
This function is copying the entire file contents into memory repeatedly and
allocating new file IDs *each time* a source location is processed.
llvm-svn: 211874
This changes the behaviour of the driver for linking to match that of the
Generic_GCC::Assemble. The default link should use "ld" rather than "gcc" for
the linker as gcc does. This avoids the unnecessary round-tripping through gcc.
It also is much more reasonable behaviour from the user's perspective. This
should have been updated with SVN r195554 which changed the behaviour of
Generic_GCC::Assemble.
The gcc_forward test needs to be updated to mark the fact that -march is a flag
for GCC not ld. This was updated as a typo fix, but added a check for a flag
that is not a link flag.
The bindings test covers the change for testing, and thus no new test was added.
llvm-svn: 211866
At least this answers the question of whether .bc/.ll input processed by the
frontend produces identical output to the original compilation.
llvm-svn: 211853
Test that we can consume LLVM bitcode and additionally check that it produces
the same output as a direct compilation.
The feature is crashy and has gone untested until now, but we might as well
provide some coverage as long as it remains in tree.
Also test LL source input in the same way because the existing tests for that
don't look convincing.
llvm-svn: 211844
This silences false positives (leaks, use of uninitialized value) in simple
code that uses containers such as std::vector and std::list. The analyzer
cannot reason about the internal invariances of those data structures which
leads to false positives. Until we come up with a better solution to that
problem, let's just not inline the methods of the containers and allow objects
to escape whenever such methods are called.
This just extends an already existing flag "c++-container-inlining" and applies
the heuristic not only to constructors and destructors of the containers, but
to all of their methods.
We have a bunch of distinct user reports all related to this issue
(radar://16058651, radar://16580751, radar://16384286, radar://16795491
[PR19637]).
llvm-svn: 211832
Avoid a second key lookup when the back reference key is going to be
inserted in the StringMap. The string lookups in the msmangler are the
main responsible for the huge overhead when compared to the itanium
mangler. This patch makes a small but noticeable improvement.
Reviewed by: rnk
Differential Revision: http://reviews.llvm.org/D4130
Patch by Agustín Bergé!
llvm-svn: 211813
when casting a retainable object to a objc_bridge_related
CF type with the suggestion of applying the method
specified in the bridging attribute to the object.
// rdar://15932435
llvm-svn: 211807
The Command will refer back to the Tool as its source,
so it has to outlive the Command.
Having the Tool on the stack would cause us to crash
when using "clang-cl -GR -fallback", because if the
Command fails, Driver::ExecuteCompilation tries to
peek at the Command's source.
Differential Revision: http://reviews.llvm.org/D4314
llvm-svn: 211802
Get the predefined macro for the architecture correct.
cortex-m4: __ARM_ARCH_7EM__
cortex-m3: __ARM_ARCH_7M__
cortex-m0: __ARM_ARCH_6M__
rdar://17420090
llvm-svn: 211792
This commit implements the -fuse-ld= option, so that the user
can specify -fuse-ld=bfd to use ld.bfd.
This commit re-applies r194328 with some test case changes.
It seems that r194328 was breaking macosx or mingw build
because clang can't find ld.bfd or ld.gold in the given sysroot.
We should use -B to specify the executable search path instead.
Patch originally by David Chisnall.
llvm-svn: 211785
Previously dllimport variables inside of template arguments relied on
not using the C++11 codepath when -fms-compatibility was set.
While this allowed us to achieve compatibility with MSVC, it did so at
the expense of MingW.
Instead, try to use the DeclRefExpr we dig out of the template argument.
If it has the dllimport attribute, accept it and skip the C++11
null-pointer check.
llvm-svn: 211766
Improve the warning when building with -fprofile-instr-use and a file
appears not to have been profiled at all. This keys on whether a
function is defined in the main file or not to avoid false negatives
when one includes a header with functions that have been profiled.
llvm-svn: 211760
Summary:
The BSDs and Darwin all forward the whole 'u' group, but gcc only
forwards -u so far as I can tell. I only forward -u, since that's a
minimal change, and many people object to magically recognizing and
forwarding linker arguments.
Reviewers: chandlerc, joerg
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4304
llvm-svn: 211756
This is a follow-up to David's r211677. For the following code,
we would end up referring to 'foo' in the initializer for 'arr',
and then fail to link, because 'foo' is dllimport and needs to be
accessed through the __imp_?foo.
__declspec(dllimport) extern const char foo[];
const char* f() {
static const char* const arr[] = { foo };
return arr[0];
}
Differential Revision: http://reviews.llvm.org/D4299
llvm-svn: 211736
For now, this is only used by its unit tests. It is similar to the API
in llvm::sys::fs::recursive_directory_iterator, but without some of the
more complex features like requesting that the iterator not recurse into
the next directory, for example.
llvm-svn: 211732
Consider the following code:
template <typename T> class Base {};
class __declspec(dllexport) class Derived : public Base<int> {}
When the base of an exported or imported class is a class template
specialization, MSVC will propagate the dll attribute to the base.
In the example code, Base<int> becomes a dllexported class.
This commit makes Clang do the proopagation when the base hasn't been
instantiated yet, and warns about it being unsupported otherwise.
This is different from MSVC, which allows changing a specialization
back and forth between dllimport and dllexport and seems to let the
last one win. Changing the dll attribute after instantiation would be
hard for us, and doesn't seem to come up in practice, so I think this
is a reasonable limitation to have.
MinGW doesn't do this kind of propagation.
Differential Revision: http://reviews.llvm.org/D4264
llvm-svn: 211725
With && at the top level of an expression, the last thing done when
emitting the expression was an unconditional jump to the cleanup block.
To reduce the amount of stepping, the DebugLoc is omitted from the
unconditional jump. This is done by clearing the IRBuilder's
"CurrentDebugLocation"*. If this is not set to some non-empty value
before the cleanup block is emitted, the cleanups don't get a location
either. If a call without a location is emitted in a function with debug
info, and that call is then inlined - bad things happen. (without a
location for the call site, the inliner would just leave the inlined
DebugLocs as they were - pointing to roots in the original function, not
inlined into the current function)
Follow up commit to LLVM will ensure that breaking the invariants of the
DebugLoc chains by having chains that don't lead to the current function
will fail assertions, so we shouldn't accidentally slip any of these
cases in anymore. Those assertions may reveal further cases that need to
be fixed in clang, though I've tried to test heavily to avoid that.
* See r128471, r128513 for the code that clears the
CurrentDebugLocation. Simply removing this code or moving the code
into IRBuilder to apply to all unconditional branches would regress
desired behavior, unfortunately.
llvm-svn: 211722
Types defined in function prototype are diagnosed earlier in C++ compilation.
They are put into declaration context where the prototype is introduced. Later on,
when FunctionDecl object is created, these types are moved into the function context.
This patch fixes PR19018 and PR18963.
Differential Revision: http://reviews.llvm.org/D4145
llvm-svn: 211718
Conditionally include x86intrin.h if we are building for x86 or x86_64.
Conditionalise definition of inline assembly routines which use x86 or x86_64
inline assembly. This is needed as clang can target Windows on ARM where these
definitions may be included into user code.
llvm-svn: 211716
[Clang part]
These patches rename the loop unrolling and loop vectorizer metadata
such that they have a common 'llvm.loop.' prefix. Metadata name
changes:
llvm.vectorizer.* => llvm.loop.vectorizer.*
llvm.loopunroll.* => llvm.loop.unroll.*
This was a suggestion from an earlier review
(http://reviews.llvm.org/D4090) which added the loop unrolling
metadata.
Patch by Mark Heffernan.
llvm-svn: 211712
Alp Toker