The Query class now holds two iterators instead of an InterferenceResult
instance. The iterators are used as bookmarks for repeated
collectInterferingVRegs calls.

llvm-svn: 137380

warning. 

llvm-svn: 137378

llvm-svn: 137376

llvm-svn: 137375

llvm-svn: 137372

llvm-svn: 137371

llvm-svn: 137370

llvm-svn: 137368

llvm-svn: 137367

It caused an unexpected behavior since r137254.

llvm-svn: 137365

llvm-svn: 137364

llvm-svn: 137363

inserts and extracts. This simple combine makes us generate only 1
instruction instead of 11 in the v8 case.

llvm-svn: 137362

1) check for the "v" version of movaps
2) add a couple of CHECK-NOT to guarantee the behavior
3) move to a more appropriate test file

llvm-svn: 137361

llvm-svn: 137359

llvm-svn: 137358

llvm-svn: 137356

collectInterferingVRegs will be the primary function for interference
checks.

llvm-svn: 137354

llvm-svn: 137353

llvm-svn: 137352

llvm-svn: 137351

No clients are iterating over interference overlaps.

llvm-svn: 137350

llvm-svn: 137347

The InterferenceResult iterator turned out to be less important than we
thought it would be.  LiveIntervalUnion clients want higher level
information, like the list of interfering virtual registers.

llvm-svn: 137346

llvm-svn: 137345

llvm-svn: 137344

llvm-svn: 137342

ancestor loops.

I have a unit test that depends on scev-unroll, which unfortunately
isn't checked in. But I will check it in when I can.

llvm-svn: 137341

llvm-svn: 137340

llvm-svn: 137339

llvm-svn: 137337

llvm-svn: 137336

llvm-svn: 137335

llvm-svn: 137333

llvm-svn: 137332

llvm-svn: 137331

llvm-svn: 137325

llvm-svn: 137324

llvm-svn: 137323

Correct immediate range for shifter operands.  Patch by James Molloy, with additional encoding fixes added by me.

llvm-svn: 137322