the chunk ID not the file ID.  This exposes problems in 
TextDiagnosticPrinter where it should have been using the canonical
file ID but wasn't.  Fix these along the way.

llvm-svn: 62427

llvm-svn: 62426

method.  This lets us clean up the interface and make it more obvious that
this method is *really really* _Pragma specific.

Note that _Pragma handling uglifies the Lexer in the critical path.  It would
be very interesting to consider making _Pragma remapping be a new special
lexer class of its own.

llvm-svn: 62425

llvm-svn: 62424

Remove tabs.

llvm-svn: 62423

of a SourceLocation.  This should speed it up and definitely simplifies it.

llvm-svn: 62422

llvm-svn: 62421

creating a whole lexer when we just want one static method.

llvm-svn: 62420

llvm-svn: 62419

llvm-svn: 62418

embedded magic.

llvm-svn: 62417

llvm-svn: 62416

llvm-svn: 62415

entire file.

llvm-svn: 62414

llvm-svn: 62413

llvm-svn: 62412

llvm-svn: 62411

llvm-svn: 62410

llvm-svn: 62409

the implementation of PTHManager::getSpelling.

llvm-svn: 62408

"FileID" a concept that is now enforced by the compiler's type checker
instead of yet-another-random-unsigned floating around.

This is an important distinction from the "FileID" currently tracked by
SourceLocation.  *That* FileID may refer to the start of a file or to a
chunk within it.  The new FileID *only* refers to the file (and its 
#include stack and eventually #line data), it cannot refer to a chunk.

FileID is a completely opaque datatype to all clients, only SourceManager
is allowed to poke and prod it.

llvm-svn: 62407

llvm-svn: 62406

llvm-svn: 62405

X86. This code:

void f() {
  uint32_t x;
  float y = (float)x;
}

used to be:

     movl     %eax, -8(%ebp)
     movl     [2^52 double], -4(%ebp)
     movsd    -8(%ebp), %xmm0
     subsd    [2^52 double], %xmm0
     cvtsd2ss %xmm0, %xmm0

Is now:

   movsd        [2^52 double], %xmm0
   movsd        %xmm0, %xmm1
   movd         %ecx, %xmm2
   orps         %xmm2, %xmm1
   subsd        %xmm0, %xmm1
   cvtsd2ss     %xmm1, %xmm0

This is faster on X86. Note that there's an extra load of %xmm0 into %xmm1. That
will be fixed in a later coalescer fix.

llvm-svn: 62404

llvm-svn: 62403

llvm-svn: 62402

content cache directly.  Content cache has a 1-1 mapping with fileentries,
whereas multiple FileIDs can be the same FileEntry.

llvm-svn: 62401

llvm-svn: 62400

llvm-svn: 62397

llvm-svn: 62396

Fix analyzer crash found when scanning Wine sources where the analyzer used old logic to determine the value of a switch 'case' label.

llvm-svn: 62395

llvm-svn: 62394

llvm-svn: 62391

llvm-svn: 62390

result of an internal implementation detail of gcc.

llvm-svn: 62389

llvm-svn: 62388

llvm-svn: 62387

even when we are still defining the TagDecl. This is required so that
qualified name lookup of a class name within its definition works (see
the new bits in test/SemaCXX/qualified-id-lookup.cpp).

As part of this, move the nested redefinition checking code into
ActOnTag. This gives us diagnostics earlier (when we try to perform
the nested redefinition, rather than when we try to complete the 2nd
definition) and removes some code duplication.

llvm-svn: 62386

if this works out, I'll change the others next.

llvm-svn: 62385

llvm-svn: 62384