remove some completely wrong code.  1 is never < 16.  It turns out that GCC appears to put strings of any length into the ELF cstring equivalent, so just rip out the code.

llvm-svn: 77429

llvm-svn: 77422

llvm-svn: 77415

Leopard.

llvm-svn: 77414

to ptest instruction plus setcc. Revamp ptest instruction. Add test.

llvm-svn: 77407

llvm-svn: 77404

Thumb-2: fix typo that caused incorrect stack elimination for VFP operations and very large stack frames.

llvm-svn: 77401

llvm-svn: 77384

llvm-svn: 77376

dealing with Data.

llvm-svn: 77372

New name is Metadata.h.

llvm-svn: 77370

llvm-svn: 77366

In thumb2 mode, add pc is unpredictable. Use add + mov pc instead (that is until more optimization goes in).

llvm-svn: 77364

llvm-svn: 77363

llvm-svn: 77362

llvm-svn: 77350

llvm-svn: 77347

llvm-svn: 77340

llvm-svn: 77336

mode, and "ld64" (the default linker) falls back to it in -static
mode.

llvm-svn: 77334

llvm-svn: 77329

llvm-svn: 77326

llvm-svn: 77305

llvm-svn: 77301

- This change also makes it possible to switch between ARM / Thumb on a
  per-function basis.
- Fixed thumb2 routine which expand reg + arbitrary immediate. It was using
  using ARM so_imm logic.
- Use movw and movt to do reg + imm when profitable.
- Other code clean ups and minor optimizations.

llvm-svn: 77300

llvm-svn: 77295

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: 77293

llvm-svn: 77275

 - My DFS traversal of LLVM is, at least for now, nearly complete! :)

llvm-svn: 77258

MCSections soon instead of Section for all targets, and we need something to
own them.

llvm-svn: 77252

llvm-svn: 77247

Remove TPat. No patterns depend on just isThumb(). Must use either T1Pat (isThumb1Only()) or T2Pat (is Thumb2).

llvm-svn: 77242

implementations that need it, rearrange ELFTAI.

llvm-svn: 77236

llvm-svn: 77233

llvm-svn: 77231

convertToThreeAddress can't handle Thumb2 instructions (which don't have same address mode as ARM instructions).

llvm-svn: 77230

llvm-svn: 77227

llvm-svn: 77222

llvm-svn: 77221