llvm-svn: 2529

the Scalar and Utils subdirectories

llvm-svn: 2523

llvm-svn: 2518

llvm-svn: 2517

llvm-svn: 2516

  is empirically faster by a noticable margin, even though duplicates can
  happen.

llvm-svn: 2511

* Convert to worklist instead of iterative algorithm

llvm-svn: 2510

llvm-svn: 2504

* Convert main constant propogation pass to be worklist driven instead of
  iterative.
* -constprop pass no longer "constant propogates" terminator instructions
   - CFG is now preserved!

llvm-svn: 2502

llvm-svn: 2501

* Remove dead PHI case (which could not work due to getNumOperands rather than
  getNumIncomingValues.  This really belongs in InstCombine, anyway so we'll
  move it there.

llvm-svn: 2497

llvm-svn: 2494

llvm-svn: 2493

llvm-svn: 2490

llvm-svn: 2484

void "test3"(bool %T) {
        br bool %T, label %BB1, label %BB1
BB1:
        ret void
}

llvm-svn: 2472

llvm-svn: 2471

Now use #if 0 instead of #ifdef 0

llvm-svn: 2448

llvm-svn: 2447

    test/Regression/Transforms/SCCP/2002-05-02-EdgeFailure.ll
* SCCP now preserves the CFG:  It leaves conditional branches the way they
  are in the program, not simplifying them.  A seperate pass should eliminate
  the potentially dead basic blocks and edges in the CFG.

llvm-svn: 2446

* Change worklist to a set so that duplicates cannot happen
* Add support for the invoke instruction
* Avoid marking store and free instructions as overdefined, since they
  cannot produce a value anyway.
* Inline the OperandChangedState implementation
* Add isEdgeFeasible in preparation to fix a bug.  Right now it behaves
  exactly as before.
* Remove obsolete comment about constant pools

llvm-svn: 2445

* Do not skip the instruction immediately after a folded instruction.  This
  was causing the testcase failure:
	test/Regression/Transforms/SCCP/2002-05-02-MissSecondInst.ll

llvm-svn: 2443

* Allow elimination of getelementptr X, uint 0 (which is a noop)

llvm-svn: 2428

llvm-svn: 2417

an anonymous namespace where they belong.

llvm-svn: 2415

llvm-svn: 2414

pass built on top of interval analysis

llvm-svn: 2411

This only requires Type.h anyway

llvm-svn: 2405

llvm-svn: 2397

llvm-svn: 2396

to make debugging output a lot nicer.

llvm-svn: 2395

llvm-svn: 2392

llvm-svn: 2391

Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA

llvm-svn: 2386

llvm-svn: 2378

to the global namespace

llvm-svn: 2370

llvm-svn: 2338

  - Rename runOnMethod to runOnFunction
* Transform getAnalysisUsageInfo into getAnalysisUsage
  - Method is now const
  - It now takes one AnalysisUsage object to fill in instead of 3 vectors
    to fill in
  - Pass's now specify which other passes they _preserve_ not which ones
    they modify (be conservative!)
  - A pass can specify that it preserves all analyses (because it never
    modifies the underlying program)
* s/Method/Function/g in other random places as well

llvm-svn: 2333

IDX is out of range instead of returning null.

llvm-svn: 2332

llvm-svn: 2323