Provide a context module to WriteAsOperand

llvm-svn: 10366

llvm-svn: 10364

This is needed since libstdc++ uses pthread_once().

llvm-svn: 10360

llvm-svn: 10359

better job, but this is the majority of the work.  This implements
LICM/sink*.ll

llvm-svn: 10358

llvm-svn: 10357

llvm-svn: 10356

Get rid of %debug - Mac OS X bison doesn't have it.  sigh.

llvm-svn: 10352

llvm-svn: 10351

llvm-svn: 10350

llvm-svn: 10349

llvm-svn: 10348

debugging front-end miscompilations.

llvm-svn: 10347

pass does not do a canonnicalization that the sinker wants.

llvm-svn: 10346

llvm-svn: 10345

llvm-svn: 10344

are sunk

llvm-svn: 10343

should make subsequent changes simpler.  This also allows us to hoist vaarg
and vanext instructions

llvm-svn: 10342

Code cleanups
Make LICM::SafeToHoist marginally more efficient

llvm-svn: 10341

llvm-svn: 10339

llvm-svn: 10338

llvm-svn: 10337

This is here to remind me to get back to this after a while.

llvm-svn: 10336

llvm-svn: 10335

llvm-svn: 10334

Also make sure to clean up any PHI nodes that are inserted which are pointless.

llvm-svn: 10333

We now insert accumulator variables as necessary to eliminate tail recursion
more aggressively.  This is still fairly limited, but allows us to transform
fib/factorial, and other functions into nice happy loops.  :)

llvm-svn: 10332

tail recursion

llvm-svn: 10331

llvm-svn: 10325

llvm-svn: 10324

llvm-svn: 10323

llvm-svn: 10322

llvm-svn: 10321

llvm-svn: 10320

  The first returns a function pointer or a stub if it's not already generated
  The second exposes what was previously JIT specific state to general clients

llvm-svn: 10319

llvm-svn: 10318

llvm-svn: 10317

llvm-svn: 10316

llvm-svn: 10315

llvm-svn: 10314