it is highly specific to the object file that will be generated in the end,
this introduces a new TargetLoweringObjectFile interface that is implemented
for each of ELF/MachO/COFF/Alpha/PIC16 and XCore.

Though still is still a brutal and ugly refactoring, this is a major step
towards goodness.

This patch also:
1. fixes a bunch of dangling pointer problems in the PIC16 backend.
2. disables the TargetLowering copy ctor which PIC16 was accidentally using.
3. gets us closer to xcore having its own crazy target section flags and
   pic16 not having to shadow sections with its own objects.
4. fixes wierdness where ELF targets would set CStringSection but not
   CStringSection_.  Factor the code better.
5. fixes some bugs in string lowering on ELF targets.

llvm-svn: 77294

llvm-svn: 77152

and abort()/exit() -> llvm_report_error().

llvm-svn: 75363

Split Support/Registry.h into two files so that we have less to
recompile every time CommandLine.h is changed.

llvm-svn: 62312

llvm-svn: 62307

llvm-svn: 56575

llvm-svn: 56574

llvm-svn: 55092

llvm-svn: 54901

In particular, Collector was confusing to implementors. Several
thought that this compile-time class was the place to implement
their runtime GC heap. Of course, it doesn't even exist at runtime.
Specifically, the renames are:

  Collector               -> GCStrategy
  CollectorMetadata       -> GCFunctionInfo
  CollectorModuleMetadata -> GCModuleInfo
  CollectorRegistry       -> GCRegistry
  Function::getCollector  -> getGC (setGC, hasGC, clearGC)

Several accessors and nested types have also been renamed to be
consistent. These changes should be obvious.

llvm-svn: 54899

llvm-svn: 54891

Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.

llvm-svn: 54881

Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library.

llvm-svn: 54880

llvm-svn: 54574

several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017

llvm-svn: 45700

providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.

llvm-svn: 45676