include guards don't show up as macro definitions in every translation
unit that imports a module. Macro definitions can, however, be
exported with the intentionally-ugly #__export_macro__
directive. Implement this feature by not even bothering to serialize
non-exported macros to a module, because clients of that module need
not (should not) know that these macros even exist.

llvm-svn: 138943

- wrong alignment for double (it was 4, but 8 is desired),
- added checks for _REENTRANT define,
- fixed the issue that defines were not tested (because the check for inside #ifdef).

llvm-svn: 138775

This matches gcc's logic. Second half of PR10661.

llvm-svn: 138730

llvm-svn: 138607

llvm-svn: 138489

llvm-svn: 138470

llvm-svn: 138381

to increased calls to SourceManager::getFileID. (rdar://9992664)

Use a slightly different approach that is more efficient both in terms of speed
(no extra getFileID calls) and in SLocEntries reduction.

Comparing pre-r138129 and this patch we get:

For compiling SemaExpr.cpp reduction of SLocEntries by 26%.
For the boost enum library:
  -SLocEntries -34% (note that this was -5% for r138129)
  -Memory consumption -50%
  -PCH size -31%

Reduced SLocEntries also benefit the hot function SourceManager::getFileID,
evident by the reduced "FileID scans".

llvm-svn: 138380

llvm-svn: 138375

Currently getMacroArgExpandedLocation is very inefficient and for the case
of a location pointing at the main file it will end up checking almost all of
the SLocEntries. Make it faster:

-Use a map of macro argument chunks to their expanded source location. The map
 is for a single source file, it's stored in the file's ContentCache and lazily
 computed, like the source lines cache.
-In SLocEntry's FileInfo add an 'unsigned NumCreatedFIDs' field that keeps track
 of the number of FileIDs (files and macros) that were created during preprocessing
 of that particular file SLocEntry. This is useful when computing the macro argument
 map in skipping included files while scanning for macro arg FileIDs that lexed from
 a specific source file. Due to padding, the new field does not increase the size
 of SLocEntry.

llvm-svn: 138225

llvm-svn: 138127

Currently this includes -pedantic warnings as well; we'll need to consider whether these should
be included.

This works as expected with -Werror.

Test cases were added to Sema/warn-unused-parameters.c, but they should probably be broken off into
their own test file.

llvm-svn: 137910

llvm-svn: 137905

messages. Fi from David Blaikie, tests from Nikola Smiljanic!

llvm-svn: 137851

If we pass it a source location that points inside a function macro argument,
the returned location will be the macro location in which the argument was expanded.
If a macro argument is used multiple times, the expanded location will
be at the first expansion of the argument.
 e.g.
   MY_MACRO(foo);
             ^
Passing a file location pointing at 'foo', will yield a macro location
where 'foo' was expanded into.

Make SourceManager::getLocation call getMacroArgExpandedLocation as well.

llvm-svn: 137794

llvm-svn: 137793

llvm-svn: 137552

Provide diag_iterator for iterating over the built-in diagnostic IDs/names in the internal table of DiagnosticIDs.

llvm-svn: 137108

llvm-svn: 136892

alignment.  This fixes cases where the anonymous bitfield is followed by a 
non-bitfield member.  E.g.,

struct t4
{
  int foo : 1;
  long : 0;
  char bar;
};

Part of rdar://9859156

llvm-svn: 136858

llvm-svn: 136581

Fixes rdar://9866494

llvm-svn: 136524

DiagnosticErrorTraps can be composed (e.g. a trap inside another trap).

Fixes http://llvm.org/PR10462 & rdar://9852007.

llvm-svn: 136447

llvm-svn: 136236

llvm-svn: 136189

the preferred alignment.  Thus, revert r135934, r135935, and r135940.

llvm-svn: 136062

'expansion' rather than 'instantiation' for macro source locations.

llvm-svn: 136058

etc. With this I think essentially all of the SourceManager APIs are
converted. Comments and random other bits of cleanup should be all thats
left.

llvm-svn: 136057

and various other 'expansion' based terms. I've tried to reformat where
appropriate and catch as many references in comments but I'm going to do
several more passes. Also I've tried to expand parameter names to be
more clear where appropriate.

llvm-svn: 136056

llvm-svn: 136054

to isMacroArgExpansion.

llvm-svn: 136053

SourceManager and FullSourceLoc.

llvm-svn: 135969

SourceManager and FullSourceLoc.

llvm-svn: 135965

llvm-svn: 135962

llvm-svn: 135961

getImmediateExpansionRange.

llvm-svn: 135960

FIXME: Override "preferred align" for double and long long for ARM apcs-gnu ABI. 
Also part of rdar://9802874

llvm-svn: 135940

llvm-svn: 135915

FullSourceLoc::getInstantiationLoc to ...::getExpansionLoc. This is part
of the API and documentation update from 'instantiation' as the term for
macros to 'expansion'.

llvm-svn: 135914

llvm-svn: 135855