PCH.  This works now, except for limitations not being able to do things
with identifiers.  The basic example in the testcase works though.

llvm-svn: 68832

llvm-svn: 68831

into clang-cc.cpp.  This makes it so clang-cc constructs the *entire* predefines 
buffer, not just half of it.  A bonus of this is that we get to kill a copy
of DefineBuiltinMacro.

llvm-svn: 68830

llvm-svn: 68829

fixme's, e.g. for tokens with identifiers) but does not actually install
them.  Some details with the predefines buffer needs to be sorted out first.

llvm-svn: 68828

llvm-svn: 68827

llvm-svn: 68826

llvm-svn: 68825

llvm-svn: 68824

more, it gives us a tremendous amount of flexibility for extending the analyzer
to handle arbitrary program points.

llvm-svn: 68823

llvm-svn: 68822

llvm-svn: 68821

file. When de-serializing LangOptions, we check that the
currently-provided language options are consistent with the options
used to compile the PCH file. If they are not, we emit a diagnostic
and ignore the PCH file.

llvm-svn: 68820

do not support it.

llvm-svn: 68819

their emission was deferred.
 - <rdar://problem/6775234> variables with internal linkage should not
   be exposed with -fvisibility=hidden.

llvm-svn: 68818

llvm-svn: 68817

llvm-svn: 68816

 - Patch by Shantonu Sen (with a minor tweak to split out
   getDarwin{OSX,IPhoneOS}Defines)!

 - <rdar://problem/6776277> Need clang-cc/ccc-analyzer support for
   -miphoneos-version-min

llvm-svn: 68815

llvm-svn: 68814

DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used.

llvm-svn: 68813

blocks, so that the outer blocks use it as well.  Radar 6762279

llvm-svn: 68811

No functional changes.

llvm-svn: 68808

llvm-svn: 68807

in @protocol expression.

llvm-svn: 68806

llvm-svn: 68805

llvm-svn: 68804

llvm-svn: 68803

llvm-svn: 68801

llvm-svn: 68800

llvm-svn: 68799

llvm-svn: 68798

Note that we don't do anything useful with identifier infos yet
and don't emit the tokens that the macros are defined to.

llvm-svn: 68797

llvm-svn: 68795

llvm-svn: 68794

cleanup. Aside from a minor tweak to the PCH file format, no
functionality change. 

llvm-svn: 68793

llvm-svn: 68791

llvm-svn: 68790

llvm-svn: 68789

llvm-svn: 68788

1. Sinking would crash when the first instruction of a block was
   sunk due to iterator problems.
2. Instructions could be sunk to their current block, causing an
   infinite loop.

This fixes PR3968

llvm-svn: 68787