Adds padding between bases or virtual bases in an attempt to avoid 
aliasing of zero-sized sub-objects.  The approach used by the ABI adds 
two more bits of state.  Detailed comments are in the code.  Test cases 
included.

Differential Revision: http://llvm-reviews.chandlerc.com/D2258

llvm-svn: 196602

This more accurately represents the actual walk - pubnames/pubtypes are
emitted into the .o, not the .dwo, and reference the skeletons not the
full units.

Use the newly established ID->index invariant to lookup the underlying
full unit to retrieve its public names and types.

llvm-svn: 196601

This simplifies reasoning about the code and enables simple navigation
from a skeleton to its full unit. (currently there are no type unit
skeletons, so the skeleton list doesn't have the same ID == index
property)

Eventually we should get rid of this ID and just store the labels we
need as the IDs are allowing this code to create difficult to
manage/understand associations (loops over non-skeletal units are
implicitly referencing their skeletal units during pub* emission, for
example). It may be necessary to have some kind of skeleton->full unit
association and a more direct pointer or similar device would be
preferable than an index.

llvm-svn: 196600

This is another regression fixed by reverting r189090.

In this case, the problem is not live variables but the approach that was taken in r189090. This regression was caused by explicitly binding "true" to the condition when we take the true branch. Normally that's okay, but in this case we're planning to reuse that condition as the value of the expression.

llvm-svn: 196599

This reverts commit r189090.

The original patch introduced regressions (see the added live-variables.* tests). The patch depends on the correctness of live variable analyses, which are not computed correctly. I've opened PR18159 to track the proper resolution to this problem.

The patch was a stepping block to r189746. This is why part of the patch reverts temporary destructor tests that started crashing. The temporary destructors feature is disabled by default.

llvm-svn: 196593

Turning the __w64 attribute into an ignored attribute to match other Microsoft extensions we do not currently support. Note that __w64 has been deprecated in MSVC since 2008.

llvm-svn: 196592

Suggested by Alp Toker.

llvm-svn: 196591

and call it from its only user. The linux toolchain. This saves quite
a lot of directory searching on other platforms.

llvm-svn: 196590

Summary:
GCC uses -fauto-profile to enable sample-based PGO. This patch
adds it to Clang as an alias for -fprofile-sample-use.

Differential Revision: http://llvm-reviews.chandlerc.com/D2353

llvm-svn: 196589

The current peephole optimizing for compare inst assumes an instr that
uses CPSR has an MO for ARM Cond code.However, for VSEL instructions
(vseqeq, vselgt, vselgt, vselvs), there is no such operand nor do
they support the modification of Cond Code.

llvm-svn: 196588

llvm-svn: 196587

llvm-svn: 196586

llvm-svn: 196585

llvm-svn: 196584

Reverting changes from r196415; this patch exposed a different, but unrelated bug regarding the __has_attribute implementation. Reverting to unblock the Chrome tsan builds.

llvm-svn: 196583

Before:
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
      [aaaaaaaaaaaa];
After:
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>
      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];

llvm-svn: 196582

llvm-svn: 196581

...since it os equivalent to comparison with +0.

llvm-svn: 196580

instcombine prefers to put extended operands first, so this patch
handles that case for C(L)GFR.

llvm-svn: 196579

Since z has no setcc instruction as such, the choice of setBooleanContents
is a bit arbitrary.  Currently it's set to ZeroOrOneBooleanContent,
so we produced a branch-free form when selecting between 0 and 1,
but not when selecting between 0 and -1.  This patch handles the latter
case too.

At some point I'd like to measure whether it's better to use conditional
moves for constant selects on z196, but that's future work.

llvm-svn: 196578

llvm-svn: 196577

llvm-svn: 196576

This fixes CMake build on Darwin.

llvm-svn: 196575

llvm-svn: 196574

In order to make the migration to modules easier, it seems to be helpful
to allow a 1:1 mapping between target names of a current build system
and the corresponding C++ modules. As  such targets commonly contain
characters like "-". ":" and "/", allowing arbitrary quote-escaped
strings seems to be a straightforward option.

After several offline discussions, the precise mechanisms for C++
module names especially regarding submodules and import statements has
yet to be determined. Thus, this patch only enables string literals as
names inside the module map files which can be used by automatic module
import (through #include).

Also improve the error message on missing use-declarations.

llvm-svn: 196573

llvm-svn: 196572

llvm-svn: 196569

Summary:
Rewrite asan's stack frame layout.
First, most of the stack layout logic is moved into a separte file
to make it more testable and (potentially) useful for other projects.
Second, make the frames more compact by using adaptive redzones
(smaller for small objects, larger for large objects).
Third, try to minimized gaps due to large alignments (this is hypothetical since
today we don't see many stack vars aligned by more than 32).

The frames indeed become more compact, but I'll still need to run more benchmarks
before committing, but I am sking for review now to get early feedback.

This change will be accompanied by a trivial change in compiler-rt tests
to match the new frame sizes.

Reviewers: samsonov, dvyukov

Reviewed By: samsonov

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2324

llvm-svn: 196568

Not only does it trigger -Wparentheses, I think the assert actually
relies on incorrect operator precedence.

Also, the grammar as questionable, but I might not know enough about the
problem at hand.

llvm-svn: 196567

llvm-svn: 196566

Use internal links to provide easier access to recent and ongoing work.

Also shift up the order of standards in the page title in order to avoid web
search results focusing on C++98 in the summary.

This is done to highlight the modern standards support in clang that was
previously languishing at the bottom of the page.

  "C++98/03 is sooooo yesterday" - dgregor

llvm-svn: 196565

llvm-svn: 196564

llvm-svn: 196563

llvm-svn: 196562

Patch by Marius Wachtler.

llvm-svn: 196561

Patch by Marius Wachtler.

llvm-svn: 196560

clang-tools-extra/test/clang-modernize/HeaderReplacements/main.cpp: Dequote safe chars rather than hairy quoting.

Thanks to Lang, to let me noticed.

llvm-svn: 196559

of whether the initializer list is dependent.

llvm-svn: 196558

For logical backtrace work, lldb needs to track Module unloads etc & symoblicate an address based on a point in time

<rdar://problem/15314403> 

This patch adds a new lldb_private::SectionLoadHistory class that tracks what shared libraries were loaded given a process stop ID. This allows us to keep a history of the sections that were loaded for a time T. Many items in history objects will rely upon the process stop ID in the future.

llvm-svn: 196557

Differential Revision: http://llvm-reviews.chandlerc.com/D2335

llvm-svn: 196556