llvm-svn: 46000

   abc+L"foo" -> abc L"foo", not abcL"foo"

llvm-svn: 45999

discussion of this change.

llvm-svn: 45410

both Preprocessor and ASTContext, we no longer need to explicitly pass
MainFileID around in function calls that also pass either Preprocessor or
ASTContext. This resulted in some nice cleanups in the ASTConsumers and the
driver.

llvm-svn: 45228

llvm-svn: 45060

not the start of a logical line.  Be careful about this distinction, which 
affects when newlines are printed and when paste-avoidance happens, etc.  
This fixes PR1848, thanks to Neil for noticing this!

llvm-svn: 44743

This would cause us to emit different code (in -E mode) for these two files:

---
#define t(x) x

t(a
3)
---
#define t(x) x
t(a
3)
---

In one case, -E would print "a\n3", in the other it printed "a3".  Now
it prints "a3" for both.

This is part of PR1848.

llvm-svn: 44742

llvm-svn: 42846

llvm-svn: 42838

predefined macros.  Previously, these were handled by the driver,
now they are handled by the preprocessor.

Some fallout of this:

1. Instead of preprocessing two buffers (the predefines, then the 
   main source file)  we now start preprocessing the main source 
   file and inject the predefines as a "psuedo #include" from the
   main source file.
2. #1 allows us to nuke the Lexer::IsMainFile flag and simplify
   Preprocessor::isInPrimaryFile.
3. The driver doesn't have to know about standard #defines, the
   preprocessor knows, which is nice for people wanting to define
   their own drivers.
4. This allows us to put normal tokens in the predefine buffer,
   for example a definition for __builtin_va_list that is 
   target-specific, and a typedef for id in objc.

llvm-svn: 42818

llvm-svn: 42800

by Hartmut Kaiser!

llvm-svn: 41684

llvm-svn: 40462

This speeds up -E on xalancbmk by 2.4%

llvm-svn: 40461

by Neil Booth.  This fixes Preprocessor/output_paste_avoid.c

llvm-svn: 40454

llvm-svn: 40424

This speeds up -E on 447.dealII by 5.8%

llvm-svn: 40423

trivial to handle and very very common.  This speeds up -E on 
447.dealII by 2.5%

llvm-svn: 40422

and avoid computing the spelling of tokens when not needed.  This speeds
up -E on 447.dealII by 2.2%

llvm-svn: 40421

without having to get the whole token.  This speeds up -E on 
447.dealII by 1.8%

llvm-svn: 40420

llvm-svn: 40419

token was not -> and if the token before it was -, the - and > would avoid pasting.

llvm-svn: 40409

llvm-svn: 40386

llvm-svn: 40385

Since that point is now long gone, we should rename LexerToken to
Token, as it is the only kind of token we have.

llvm-svn: 40105

fileid/offset pair, it now contains a bit discriminating between
mapped locations and file locations.  This separates the tables for
macros and files in SourceManager, and allows better separation of
concepts in the rest of the compiler.  This allows us to have *many*
macro instantiations before running out of 'addressing space'.

This is also more efficient, because testing whether something is a
macro expansion is now a bit test instead of a table lookup (which
also used to require having a srcmgr around, now it doesn't).

This is fully functional, but there are several refinements and
optimizations left.

llvm-svn: 40103

out of the llvm namespace.  This makes the clang namespace be a sibling of
llvm instead of being a child.

The good thing about this is that it makes many things unambiguous.  The
bad things is that many things in the llvm namespace (notably data structures
like smallvector) now require an llvm:: qualifier.  IMO, libsystem and libsupport
should be split out of llvm into their own namespace in the future, which will fix
this issue.

llvm-svn: 39659

llvm-svn: 39210

state, not aspects of the language standard being parsed.

llvm-svn: 39209

at once.

llvm-svn: 39207

llvm-svn: 39205

of having a loose collection of function pointers.  This also allows clients to
maintain state, and reduces the size of the Preprocessor.h interface.

llvm-svn: 39203

from gcc mainline.

llvm-svn: 39067

llvm-svn: 39013

llvm-svn: 39009

llvm-svn: 38796

llvm-svn: 38784

llvm-svn: 38783

llvm-svn: 38767

llvm-svn: 38708