The major changes are:
1) LinkerOptions has been merged into TargetInfo
2) LinkerInvocation has been merged into Driver
3) Drivers no longer convert arguments into an intermediate (core) argument 
   list, but instead create a TargetInfo object and call setter methods on 
   it. This is only how in-process linking would work. That is, you can 
   programmatically set up a TargetInfo object which controls the linking.
4) Lots of tweaks to test suite to work with driver changes
5) Add the DarwinDriver
6) I heavily doxygen commented TargetInfo.h

Things to do after this patch is committed:
a) Consider renaming TargetInfo, given its new roll. 
b) Consider pulling the list of input files out of TargetInfo. This will 
   enable in-process clients to create one TargetInfo the re-use it with 
   different input file lists.
c) Work out a way for Drivers to format the warnings and error done in 
   core linking.

llvm-svn: 178776

deprecated typedef to subclass or invoke a class method.
// rdar://13569424

llvm-svn: 178775

llvm-svn: 178774

The Thumb2SizeReduction pass avoids false CPSR dependencies, except it
still aggressively creates tMOVi8 instructions because they are so
common.

Avoid creating false CPSR dependencies even for tMOVi8 instructions when
the the CPSR flags are known to have high latency. This allows integer
computation to overlap floating point computations.

Also process blocks in a reverse post-order and propagate high-latency
flags to successors.

<rdar://problem/13468102>

llvm-svn: 178773

llvm-svn: 178771

Add test case to show that 'availability' and 'deprecated' do *not* inherit when redeclaring ObjC properties.

llvm-svn: 178770

llvm-svn: 178769

Having these not be the same makes an easy to misuse API. We should audit the
uses and probably rename to something like

foo->hasExternalLinkage():
  The c++ standard one. That is UniqueExternalLinkage or ExternalLinkage.

foo->hasUniqueExternalLinkage():
  Is UniqueExternalLinkage.

foo->hasCogeGenExternalLinkage():
  Is ExternalLinkage.

llvm-svn: 178768

llvm-svn: 178767

Now that we don't have a semantic storage class, use the linkage.

Thanks to Bruce Stephens for reporting this.

llvm-svn: 178766

llvm-svn: 178765

Somehow search_n never got tested, so of course it had a bug in it.  This fixes http://llvm.org/bugs/show_bug.cgi?id=15667.

llvm-svn: 178764

llvm-svn: 178763

llvm-svn: 178762

llvm-svn: 178761

llvm-svn: 178760

llvm-svn: 178758

[asan] fill first 4K of malloc-ed memory with garbage, implement flags max_malloc_fill_size and malloc_fill_byte

llvm-svn: 178757

llvm-svn: 178756

Fixes Mac build.

llvm-svn: 178755

Add wrappers for all user signal handlers to unpoison the handler's arguments.

llvm-svn: 178754

llvm-svn: 178750

llvm-svn: 178749

llvm-svn: 178747

support.

Caveat: Other than the existing segmented stacks support, no
claims are made of this working.

llvm-svn: 178744

Revert r177948.  We decided that we do not want ObjC property redeclarations to inherit "deprecated".

llvm-svn: 178743

llvm-svn: 178742

keep the call at the current location.

llvm-svn: 178741

llvm-svn: 178740

This mostly reverts 178733, but keeps the tests.

I don't claim to understand how hidden sub modules work or when we need to see
them (is that documented?), but this has the same semantics and avoids adding
hasExternalLinkageUncached which has the same foot gun potential as the old
hasExternalLinkage.

Last but not least, not computing linkage when it is not needed is more
efficient.

llvm-svn: 178739

so it can be re-entered while iterating over a directory safely.

llvm-svn: 178738

This requires v9 cmov instructions using the %xcc flags instead of the
%icc flags.

Still missing:
- Select floats on %xcc flags.
- Select i64 on %fcc flags.

llvm-svn: 178737

llvm-svn: 178736

This test was exactly the opposite of what it should be. We should check if
there old decl has linkage (where it makes sense) and if the new decl has
the extern keyword.

llvm-svn: 178735

children - which it may have to compute.  Thus it needs to take the API lock.

<rdar://problem/13560869>

llvm-svn: 178734

caching the linkage for a declaration before we set up its redeclaration chain,
when determining whether a declaration could be a redeclaration of something
from an unimported submodule. We actually want to look at the declaration as if
it were not a redeclaration here, so compute the linkage but don't cache it.

llvm-svn: 178733

<rdar://problem/11319574>

llvm-svn: 178732

of a property just in case the property's getter happens to be +1.
We won't synthesize a getter for such a property, but we will allow
the user to define a +1 method for it.
rdar://13115896

llvm-svn: 178731

Looks like cmake on windows is not expanding ENABLE_EXPORTS to
-Wl,--export-all-symbols on mingw or cygwin, so add this back.

llvm-svn: 178730

The __NSArrayI synthetic children provider was running expressions to generate children, which is inefficient for large amounts of data
Reimplementing to use a faster algorithm

llvm-svn: 178729