which isn't needed anymore.

llvm-svn: 55419

llvm-svn: 55418

and various other things.

llvm-svn: 55415

verifier. See PR2711 for details.

llvm-svn: 55414

llvm-svn: 55413

llvm-svn: 55409

llvm-svn: 55401

llvm-svn: 55400

llvm-svn: 55399

This simultaneously makes the code simpler and adds support for sext as well.

llvm-svn: 55398

immediate operands.

llvm-svn: 55397

llvm-svn: 55396

llvm-svn: 55394

llvm-svn: 55393

Put a heuristic in place to prevent GVN from falling into bad cases with massively complicated CFGs.
This speeds up a particular testcase from 12+ hours to 5 seconds with little perceptible loss of quality.

llvm-svn: 55391

of two, and to not need a scratch std::vector. Also, use the
SelectionDAG's topological sort in LegalizeDAG instead of having
a separate implementation.

llvm-svn: 55389

llvm-svn: 55387

put each major step in a separate function. This makes the high
level sequence of events easier to follow.

llvm-svn: 55385

llvm-svn: 55384

llvm-svn: 55383

llvm-svn: 55381

- fix to please VS: add a return after an assert.

llvm-svn: 55380

allowing it to support the full range of conversions people might ask for in a correct manner.

llvm-svn: 55378

llvm-svn: 55377

have a return type that differs from the operand types.

llvm-svn: 55376

was inserted or not.  This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.

llvm-svn: 55375

llvm-svn: 55374

llvm-svn: 55373

llvm-svn: 55372

llvm-svn: 55371

str() mirrors the same method in std::ostringstream.
str() flushes the buffered stream contents to string and returns a reference to the string.

llvm-svn: 55370

llvm-svn: 55363

in the example attached to PR2590, but is a problem in general.

llvm-svn: 55361

llvm-svn: 55360

orders, part of PR2590

llvm-svn: 55359

assign it to a version of the xmm register with the regclass that matches its
type.  This fixes PR2715, a bug handling some crazy xpcom case in mozilla.

llvm-svn: 55358

llvm-svn: 55355

RecyclingAllocator, but this change is needed for the nodes
to actually be recycled. This cuts SelectionDAG's memory
usage high-water-mark in half in some cases.

llvm-svn: 55351

llvm-svn: 55350

Throw the switch to allow FastISel to emit instructions whose return types different from their inputs.  Next step: adding lowering pattens in FastISel that actually use these newly available opcodes.

llvm-svn: 55349