instead of label ID's.  This cleans up and regularizes a bunch 
of code and makes way for future progress.

Unfortunately, this pointed out to me that JITDwarfEmitter.cpp
is largely copy and paste from DwarfException/MachineModuleInfo
and other places.  This is very sad and disturbing. :(

One major change here is that TidyLandingPads moved from being
called in DwarfException::BeginFunction to being called in
DwarfException::EndFunction.  There should not be any 
functionality change from doing this, but I'm not an EH expert.

llvm-svn: 98459

llvm-svn: 98451

and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to 
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.

llvm-svn: 98450

llvm-svn: 98433

instead of as a stem+idx pair, simplify the "is a new 
location" check to use symbol comparison.

llvm-svn: 98432

llvm-svn: 98429

llvm-svn: 98426

entries to not thrash std::strings and MCSymbols.

llvm-svn: 98415

llvm-svn: 98392

some of its callers.

llvm-svn: 98388

llvm-svn: 98378

for a global instead of messing around with string buffers.

llvm-svn: 98366

llvm-svn: 98365

No functionality change.

llvm-svn: 98363

can get it from the context now.

llvm-svn: 98361

by A.Mazur!

llvm-svn: 98360

several fields to make it easier to figure out where bugs might be creeping in.

llvm-svn: 98358

ppc calls copysignl with a 128 bit ppc long double, resulting
in a node that the type legalizer doesn't know how to expand.

llvm-svn: 98357

llvm-svn: 98348

(it seems that FreeBSD doesn't have copysignl).  Done by
removing a bunch of assumptions from the code.  This may also
help with sparc 128 bit floats.

llvm-svn: 98346

whose true value was not Val#0.

llvm-svn: 98336

llvm-svn: 98302

llvm-svn: 98295

llvm-svn: 98293

where we used ot create an MCSymbol for ".".  Now emit an assembler
temporary label and reference it instead of "." textually.

rdar://7739457

llvm-svn: 98292

llvm-svn: 98289

an MCExpr and not an MCSymbol.  Change it to take an MCStreamer,
which is currently unused.

No functionality change.

llvm-svn: 98278

llvm-svn: 98277

llvm-svn: 98268

are inside the function by the target at the point of use.

llvm-svn: 98255

cl = EXTRACT_SUBREG reg1024, 1, is overly conservative. It should check
for overlaps of vr's live interval with the super registers of the
physical register (ECX in this case) and let JoinIntervals() handle checking
the coalescing feasibility against the physical register (cl in this case).

llvm-svn: 98251

llvm-svn: 98225

llvm-svn: 98224

llvm-svn: 98222

Move methods out of line and M-x whitespace-cleanup.
Promote common method arguments to member variables.

llvm-svn: 98207

when it looked past a trunc.

llvm-svn: 98203

llvm-svn: 98202

indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct information to add to non-lazy
pointers. That will be explained further when this bit is used.

llvm-svn: 98199

No functional effect yet.  This is still evolving and should
not be viewed as final.

llvm-svn: 98195

patch by Micah Villmow for PR6572.

llvm-svn: 98188