- Code quality is poor, but simple.

llvm-svn: 63083

PTH: Use Token::setLiteralData() to directly store a pointer to cached spelling data in the PTH file.  This removes a ton of code for looking up spellings using sourcelocations in the PTH file.  This simplifies both PTH-generation and reading.

Performance impact for -fsyntax-only on Cocoa.h (with Cocoa.h in the PTH file):
- PTH generation time improves by 5%
- PTH reading improves by 0.3%.

llvm-svn: 63072

llvm-svn: 63071

case correctly.

llvm-svn: 63068

as well (for nonfragile-abi).

llvm-svn: 63062

  - When it's safe, ActionResult uses the low bit of the pointer for
  the "invalid" flag rather than a separate "bool" value. This keeps
  GCC from generating some truly awful code, for a > 3x speedup in the
  result-passing microbenchmark.
  - When DISABLE_SMART_POINTERS is defined, store an ActionResult
  within ASTOwningResult rather than an ASTOwningPtr. Brings the
  performance benefits of the above to smart pointers with
  DISABLE_SMART_POINTERS defined.

Sadly, these micro-benchmark performance improvements don't seem to
make much of a difference on Cocoa.h right now. However, they're
harmless and might help with future optimizations.

llvm-svn: 63061

optimize it to use the LiteralData when possible.

llvm-svn: 63060

to crash when given an instantiation location.  Thanks to Fariborz for
the testcase.

llvm-svn: 63057

llvm-svn: 63055

llvm-svn: 63054

llvm-svn: 63047

Embed the offset of the PTH table inside the prologue of the PTH file.  This will help improve gradual versioning of PTH files instead of relying that the PTH table is at a fixed offset.

llvm-svn: 63045

meta-data.

llvm-svn: 63043

llvm-svn: 63039

a unified return).

llvm-svn: 63038

instantiation history in an effort to speed up c99-intconst-1.c.
Now that multiple nested instantiations are allowed, we just
make them and don't pay the cost of lookups.  With the other
changes that went in before this, reverting this is actually
a speedup for c99-intconst-1.c, speeding it up from 1.96s to 1.80s,
and preserves much better loc info.

llvm-svn: 63036

history

llvm-svn: 63035

source locations, allow creation of them.  We can now say that
a token was instantiated here, then here, then here.

llvm-svn: 63034

locations, and move the slow case out of line.  No perf change on cocoa.h

llvm-svn: 63033

llvm-svn: 63032

llvm-svn: 63031

which I think is rdar://6527005, and make getDecomposedSpellingLocSlowCase
handle nested spelling locations.

llvm-svn: 63030

Token now has a class of kinds for "literals", which include 
numeric constants, strings, etc.  These tokens can optionally have
a pointer to the start of the token in the lexer buffer.  This 
makes it faster to get spelling and do other gymnastics, because we
don't have to go through source locations.

This change is performance neutral, but will make other changes
more feasible down the road.

llvm-svn: 63028

llvm-svn: 63020

llvm-svn: 63016

unique the Filenames in #line directives, assigning them UIDs.

llvm-svn: 63010

testing code.

llvm-svn: 63006

llvm-svn: 63003

Use tag classes instead of typedefs for GDM entries 'ConstNotEq' and 'ConstEq'.  This avoids collisions in the GDM.

llvm-svn: 63002

llvm-svn: 63000

we just discard them.

llvm-svn: 62999

This reduces fsyntax-only time on c99-intconst-1.c from 2.43s down to 
2.01s (20%), reducing the number of fileid lookups from 2529040 linear 
and 64771121 binary to 5625902 linear and 4151182 binary.

This knocks getFileID down to only 4.6% of compile time on this testcase.
At this point, malloc/free is over 35% of compile time, primarily allocating
MacroArgs objects and their argument preexpansion vectors.

I don't feel like malloc avoiding right now, so I'm just going to call
this good.

llvm-svn: 62994

of a macro.  Since these tokens may themselves be from macro 
expansions, we need to resolve down to the spelling loc when the
macro ends up being instantiated.  Instead of resolving this for
each token expanded from the macro definition, just do it once when
the macro is defined.  This speeds up clang on c99-intconst-1.c from
2.66s to 2.43s (9.5%), reducing the FileID lookups from 407244 linear and
114175649 binary to 2529040 linear and 64771121 binary.

llvm-svn: 62993

per token lexed from it.  This speeds up clang on c99-intconst-1.c from
the GCC testsuite from 3.64s to 2.66s (36%).  This reduces the number of
binary search FileID lookups from 251570522 to 114175649 on this testcase.

llvm-svn: 62992

CompoundLiteralExpr so that there aren't any null pointers in the AST.

llvm-svn: 62981

ground work for implementing #line, and fixes the "out of macro ID's" 
problem.

There is nothing particularly tricky about the code, other than the
very performance sensitive SourceManager::getFileID() method.

llvm-svn: 62978

llvm-svn: 62971

llvm-svn: 62960

llvm-svn: 62959

everything that we aren't intending to implement in Expr::Evaluate.

llvm-svn: 62953