moves the MacroInfo pointer to a side hash table (which currently 
lives in IdentifierTable.cpp).  This removes a pointer from 
Identifier info, but doesn't shrink it, as it requires a new bit 
be added.  This strange approach with the 'hasmacro' bit is needed
to not lose preprocessor performance.

llvm-svn: 42722

This fixes strange assertions that just started triggering.

llvm-svn: 42721

llvm-svn: 42720

fit in 32-bits, shrinking IdentifierInfo by a word.

This shrinks the total size of the identifier pool from 
1817264 to 1634428 bytes (11%) on carbon.h.

llvm-svn: 42719

llvm-svn: 42718

llvm-svn: 42717

number of arguments now and does the right thing, but the nullary/unary
accessors are preserved as convenience functions.  This allows us to
slightly simplify clients.

llvm-svn: 42716

llvm-svn: 42715

llvm-svn: 42714

llvm-svn: 42713

llvm-svn: 42712

llvm-svn: 42711

NamedDecl is a Decl that has an IdentifierInfo (for example, ScopedDecl), 
but not ObjcMethodDecl.

Simplify some code in ActOnAddMethodsToObjcDecl, by doing the cast from 
DeclTy to Decl at the start of the method.

llvm-svn: 42710

Every decl has a SourceLocation, move the location info into the Decl class instead of being in subclasses.

llvm-svn: 42709

llvm-svn: 42708

llvm-svn: 42707

llvm-svn: 42706

llvm-svn: 42705

llvm-svn: 42704

llvm-svn: 42703

llvm-svn: 42702

bindings (part le deux).

llvm-svn: 42701

llvm-svn: 42700

llvm-svn: 42699

llvm-svn: 42698

llvm-svn: 42697

llvm-svn: 42696

Inspired by Laurence Tratt's patch

llvm-svn: 42695

llvm-svn: 42692

llvm-svn: 42691

llvm-svn: 42690

for holding builtin target-specific macros.

llvm-svn: 42689

stringmap operations when there are no secondary targets.

llvm-svn: 42688

llvm-svn: 42687

llvm-svn: 42686

llvm-svn: 42685

llvm-svn: 42684

llvm-svn: 42683

llvm-svn: 42682

llvm-svn: 42681