PTH: Remove some methods and simplify some conditions in PTHLexer::Lex().  No big functionality change.

llvm-svn: 61381

- This reduces the PTH size for Cocoa.h by 7%.
- The increases PTH -Eonly speed for Cocoa.h by 0.8%.

llvm-svn: 61377

llvm-svn: 61375

llvm-svn: 61370

llvm-svn: 61367

- Encode the token length with 2 bytes instead of 4.
- This reduces the size of the .pth file for Cocoa.h by 12%.
- This speeds up PTH time (-Eonly) on Cocoa.h by 1.6%.

llvm-svn: 61364

- In PTHLexer::Lex read all of the token data from PTH file before
  constructing the token.  The idea is to enhance locality.
- Do not use Read8/Read32 in PTHLexer::Lex.  Inline these operations manually.
- Change PTHManager::ReadIdentifierInfo() to PTHManager::GetIdentifierInfo().
  They are functionally the same except that PTHLexer::Lex() reads the
  persistent id.

These changes result in a 3.3% speedup for PTH on Cocoa.h (-Eonly).

llvm-svn: 61363

- Embed 'eom' tokens in PTH file.
- Use embedded 'eom' tokens to not lazily generate them in the PTHLexer.
  This means that PTHLexer can always advance to the next token after
  reading a token (instead of buffering tokens using a copy).
- Moved logic of 'ReadToken' into Lex.  GetToken & ReadToken no longer exist.
- These changes result in a 3.3% speedup (-Eonly) on Cocoa.h.
- The code is a little gross.  Many cleanups are possible and should be done.

llvm-svn: 61360

llvm-svn: 61359

DeclContext. Instead, just keep the list of currently-active
declarations and only build the OverloadedFunctionDecl when we
absolutely need it.

This is a half-step toward eliminating the need to explicitly build
OverloadedFunctionDecls that store sets of overloaded
functions. This was suggested by Argiris a while back, and it's a good
thing for several reasons: first, it eliminates the messy logic that
currently tries to keep the OverloadedFunctionDecl in sync with the 
declarations that are being added. Second, it will (eventually)
eliminate the need to allocate memory for overload sets, which could
help performance. Finally, it helps set us up for when name lookup can
return multiple (possibly ambiguous) results, as can happen with
lookup of class members in C++.

Next steps: make the IdentifierResolver store overloads as separate
entries in its list rather than replacing them with an
OverloadedFunctionDecl now, then see how far we can go toward
eliminating OverloadedFunctionDecl entirely.

llvm-svn: 61357

outer-most const of pointer types.

llvm-svn: 61355

llvm-svn: 61351

llvm-svn: 61348

llvm-svn: 61346

Support conversion from a null pointer constant o any Objective-C object pointer type. Fixes rdar://problem/6463298

llvm-svn: 61340

instance methods by building print-class-info.m,
whose output is now identical to what gcc puts out.

llvm-svn: 61339

llvm-svn: 61337

property in a category and to issue diagnostics
for mismatch method in some other cases.

llvm-svn: 61336

llvm-svn: 61335

llvm-svn: 61334

llvm-svn: 61333

llvm-svn: 61332

llvm-svn: 61331

llvm-svn: 61330

  - Overloading has to cope with having both static and non-static
    member functions in the overload set.
  - The call may or may not have an implicit object argument,
    depending on the syntax (x.f() vs. f()) and the context (static
    vs. non-static member function).
  - We now generate MemberExprs for implicit member access expression.
  - We now cope with mutable whenever we're building MemberExprs.

llvm-svn: 61329

llvm-svn: 61328

llvm-svn: 61327

llvm-svn: 61326

llvm-svn: 61325

llvm-svn: 61324

llvm-svn: 61323

llvm-svn: 61322

llvm-svn: 61321

llvm-svn: 61320

us to measure the effect of this optimization.

llvm-svn: 61319

Add composite conversion intrinsics - will implement them shortly.

llvm-svn: 61318

llvm-svn: 61317

llvm-svn: 61316

llvm-svn: 61315

llvm-svn: 61314