llvm-svn: 34536

llvm-svn: 34535

llvm-svn: 34534

llvm-svn: 34525

A spill kills the register being stored. But it is later being reused by spiller, its live range has to be extended.

llvm-svn: 34517

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