llvm-svn: 34516

llvm-svn: 34512

Initial check in of register scavenger. Its only current functionality is tracking live registers per MBB.

llvm-svn: 34511

llvm-svn: 34503

llvm-svn: 34502

llvm-svn: 34501

llvm-svn: 34500

llvm-svn: 34499

llvm-svn: 34497

llvm-svn: 34496

llvm-svn: 34494

llvm-svn: 34493

llvm-svn: 34492

llvm-svn: 34491

llvm-svn: 34481

llvm-svn: 34479

llvm-svn: 34478

llvm-svn: 34476

llvm-svn: 34475

llvm-svn: 34473

llvm-svn: 34461

llvm-svn: 34460

llvm-svn: 34435

llvm-svn: 34428

Revert patches that caused the problem. Evan, please investigate and reapply
when you've discovered the problem.

llvm-svn: 34399

- When coalescing a copy MI, if its destination is "dead", propagate the
  property to the source MI's destination if there are no intervening uses.
- Detect dead function live-in's and remove them.

llvm-svn: 34383

llvm-svn: 34382

llvm-svn: 34381

llvm-svn: 34380

- Allow LiveVariables to track liveness of more registers.

llvm-svn: 34379

llvm-svn: 34369

test/CodeGen/PowerPC/2007-02-16-InlineAsmNConstraint.ll

llvm-svn: 34368

llvm-svn: 34359

llvm-svn: 34343

llvm-svn: 34342

llvm-svn: 34337

llvm-svn: 34307

abort case.

llvm-svn: 34306

llvm-svn: 34302

Change use of "packed" term to "vector" in comments, strings, variable
names, etc.

llvm-svn: 34300