BumpPtrAllocator: Make sure threshold cannot be initialized with a value smaller than the slab size.

This replaces r151834 with a simpler fix.

llvm-svn: 151842

Change @import to @__experimental_modules_import.  We are not ready to commit to a particular syntax for modules,
and don't have time to push it forward in the near future.

llvm-svn: 151841

attributes, introduced in r151188.

+ the test to catch it.

Thanks to Ahmed Charles for pointing this out.

llvm-svn: 151840

llvm-svn: 151839

correctly.

Still rdar://10900684

llvm-svn: 151838

llvm-svn: 151837

llvm-svn: 151836

Hardcode the identifier and the execution name in debugserver since we put this into a section and not Xcode variable expansion happens.

llvm-svn: 151835

increase the slab size.

llvm-svn: 151834

llvm-svn: 151833

so that the test will not fail when run on an Intel Atom
processor, due to the Atom scheduler producing an instruction sequence that is
different from that which is normally expected.

llvm-svn: 151832

llvm-svn: 151831

Will bring it up once the issue is fixed properely.

llvm-svn: 151830

Needs llvm update.

llvm-svn: 151829

llvm-svn: 151828

Allow debugserver to be built on a newer kernel and still allow debugging on
older kernels.

llvm-svn: 151827

(b) fixes and improvements to the formatters for NSDate and NSString
(c) adding an introspection formatter for NSCountedSet
(d) making the Objective-C formatters test cases pass on both 64 and 32 bit
    one of the test cases is marked as expected failure on i386 - support needs to be added to the LLDB core for it to pass

llvm-svn: 151826

r151822, sorry sorry. =[

We need 'git svn nothave' or some such...

llvm-svn: 151824

and to print the total count & time in the header.

llvm-svn: 151823

of the proposed standard hashing interfaces (N3333), and to use
a modified and tuned version of the CityHash algorithm.

Some of the highlights of this change:
 -- Significantly higher quality hashing algorithm with very well
    distributed results, and extremely few collisions. Should be close to
    a checksum for up to 64-bit keys. Very little clustering or clumping of
    hash codes, to better distribute load on probed hash tables.
 -- Built-in support for reserved values.
 -- Simplified API that composes cleanly with other C++ idioms and APIs.
 -- Better scaling performance as keys grow. This is the fastest
    algorithm I've found and measured for moderately sized keys (such as
    show up in some of the uniquing and folding use cases)
 -- Support for enabling per-execution seeds to prevent table ordering
    or other artifacts of hashing algorithms to impact the output of
    LLVM. The seeding would make each run different and highlight these
    problems during bootstrap.

This implementation was tested extensively using the SMHasher test
suite, and pased with flying colors, doing better than the original
CityHash algorithm even.

I've included a unittest, although it is somewhat minimal at the moment.
I've also added (or refactored into the proper location) type traits
necessary to implement this, and converted users of GeneralHash over.

My only immediate concerns with this implementation is the performance
of hashing small keys. I've already started working to improve this, and
will continue to do so. Currently, the only algorithms faster produce
lower quality results, but it is likely there is a better compromise
than the current one.

Many thanks to Jeffrey Yasskin who did most of the work on the N3333
paper, pair-programmed some of this code, and reviewed much of it. Many
thanks also go to Geoff Pike Pike and Jyrki Alakuijala, the original
authors of CityHash on which this is heavily based, and Austin Appleby
who created MurmurHash and the SMHasher test suite.

Also thanks to Nadav, Tobias, Howard, Jay, Nick, Ahmed, and Duncan for
all of the review comments! If there are further comments or concerns,
please let me know and I'll jump on 'em.

llvm-svn: 151822

llvm-svn: 151821

llvm-svn: 151820

llvm-svn: 151819

llvm-svn: 151818

llvm-svn: 151816

Allows us to de-virtualize the function and provides access to it in
the instruction printer, which is useful for handling composite
physical registers (e.g., ARM register lists).

llvm-svn: 151815

This reverts commit 151760.

We want to move getSubReg() from TargetRegisterInfo into MCRegisterInfo,
but to do that, the type of the lookup table needs to be the same for
all targets.

llvm-svn: 151814

Make darwin bots happier.

llvm-svn: 151813

llvm-svn: 151812

llvm-svn: 151811

Found-By: Christian Lengauer
llvm-svn: 151810

llvm-svn: 151809

llvm-svn: 151808

Fix a codegen fault in which log2 or exp2 could be dead-code eliminated even though they could have sideeffects.

Only allow log2/exp2 to be converted to an intrinsic if they are declared "readnone".

llvm-svn: 151807

This allows us to make TRC non-polymorphic and value-initializable, eliminating a huge static
initializer and a ton of cruft from the generated code.

Shrinks ARMBaseRegisterInfo.o by ~100k.

llvm-svn: 151806

llvm-svn: 151805

llvm-svn: 151804

llvm-svn: 151803

llvm-svn: 151802

1) solving a bug where, after Jim's fixes to stack frames, synthetic children were not recalculated when necessary, causing them to get out of sync with live data
2) providing an updated list of tagged pointers values for the objc_runtime module - hopefully this one is final
3) changing ValueObject::DumpValueObject to use an Options class instead of providing a bulky list of parameters to pass around
   this change had been laid out previously, but some clients of DumpValueObject() were still using the old prototype and some arguments
   were treated in a special way and passed in directly instead of through the Options class
4) providing new GetSummaryAsCString() and GetValueAsCString() calls in ValueObject that are passed a formatter object and a destination string
   and fill the string by formatting themselves using the formatter argument instead of the default for the current ValueObject
5) removing the option to have formats and summaries stick to a variable for the current stoppoint
   after some debate, we are going with non-sticky: if you say frame variable --format hex foo, the hex format will only be applied to the current command execution and not stick when redisplaying foo
   the other option would be full stickiness, which means that foo would be formatted as hex for its whole lifetime
   we are open to suggestions on what feels "natural" in this regard

llvm-svn: 151801