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18fb2a6682
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144 Commits

Author SHA1 Message Date
Chris Lattner
18fb2a6682 Implement elimination of loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2620 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-14 05:02:40 +00:00
Chris Lattner
2172db04e7 Trivial cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2617 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-13 22:04:46 +00:00
Chris Lattner
e0e734eea0 Initial checkin of LICM pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2615 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-10 22:44:58 +00:00
Chris Lattner
3dec1f2722 Add support for printing out statistics information when -stats is added to 
the command line


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2601 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-10 15:38:35 +00:00
Chris Lattner
55547274bc Fix some bugs, straighten stuff out, more work needs to be done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2600 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-10 15:37:35 +00:00
Chris Lattner
87fea85934 Initial checkin of the PiNodeInsertion pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2593 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-10 05:41:34 +00:00
Chris Lattner
53a5b57737 Handle setcc <global*>, 0 instructions, Global pointers are never null! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2582 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-09 20:11:54 +00:00
Chris Lattner
0aa7cd605d Give the longer name to the instruction that will probably be eliminated later 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2581 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-09 20:11:23 +00:00
Chris Lattner
403717156b Add ability to transform (x - (y - z)) into (x + (z - y)) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2566 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-09 01:29:19 +00:00
Chris Lattner
5c4afb9034 * Combine: A-(-B) -> A + B 
* Bugfix:  A + -B and -A + B


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2561 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-08 22:46:53 +00:00
Chris Lattner
4fd56003ab Initial checkin of expression reassociation pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2559 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-08 22:19:27 +00:00
Chris Lattner
ea54ab9cd2 Fix bug: test/Regression/Transforms/ADCE/2002-01-31-UseStuckAround.ll 
Cleanup code a lot


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2547 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 22:11:39 +00:00
Chris Lattner
022103b3f3 Merge all individual .h files into a single Scalar.h file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2537 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 20:03:00 +00:00
Chris Lattner
c8cc4cb03b Updates to move some header files out of include/llvm/Transforms into 
the Scalar and Utils subdirectories


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2523 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 18:36:35 +00:00
Chris Lattner
497c60c0ed Reduce dependance on TransformInternals.h, instead using the TransformUtils library 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2518 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 18:12:18 +00:00
Chris Lattner
6d7491c3cc Add #include no longer included by llvm/Transforms/Scalar/ConstantProp.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2517 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 18:11:30 +00:00
Chris Lattner
2ed01d8f0b Factor code out to the TransformUtils library 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2516 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 18:10:55 +00:00
Chris Lattner
071d0ad2f1 * Convert InstWorkList to vector instead of set, because on big programs it 
is empirically faster by a noticable margin, even though duplicates can
  happen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2511 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 04:29:32 +00:00
Chris Lattner
92deeaf7a3 * Remove all cfg simplification stuff for a new cfg simplify pass (todo) 
* Convert to worklist instead of iterative algorithm


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2510 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-07 04:24:11 +00:00
Chris Lattner
d661937352 Only do masking for unsigned values! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2504 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 18:54:59 +00:00
Chris Lattner
89df1b58a9 * Eliminate dead code that should have been removed in last revision 
* Convert main constant propogation pass to be worklist driven instead of
  iterative.
* -constprop pass no longer "constant propogates" terminator instructions
   - CFG is now preserved!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2502 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 18:21:31 +00:00
Chris Lattner
473945d1dc Handle X = phi Y --> X = Y 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2501 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 18:06:38 +00:00
Chris Lattner
f51825e3fb * Use simplified interface to constant propogation stuff. 
* 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2497 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 17:54:10 +00:00
Chris Lattner
dfe81ab87a Clean up ADCE by removing extraneous wrapper class 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2494 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 17:27:57 +00:00
Chris Lattner
ed3a55005d Combine not (not X) -> X 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2493 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 17:03:21 +00:00
Chris Lattner
b35dde1df4 Support more cases... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2490 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 16:49:18 +00:00
Chris Lattner
3f5b877dd4 Add many more instruction combination simplifications 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2484 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 16:14:14 +00:00
Chris Lattner
cdac78b8a4 Merge blocks like this: 
void "test3"(bool %T) {
        br bool %T, label %BB1, label %BB1
BB1:
        ret void
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2472 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 03:02:02 +00:00
Chris Lattner
4c1061f58c Implement constant propogation of shift instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2471 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-06 03:01:37 +00:00
Chris Lattner
904ec289c2 Ok, really it only takes me 3 times to get this right! 
Now use #if 0 instead of #ifdef 0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2448 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-02 21:49:50 +00:00
Chris Lattner
52a9a1def8 Oops, disable debugging code all the way. :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2447 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-02 21:47:40 +00:00
Chris Lattner
b9a6634466 * Finish the implementation of isEdgeFeasible this fixes bug: 
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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2446 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-02 21:44:00 +00:00
Chris Lattner
59f0ce2a41 * Enable SCCP debugging to be turned on with a simple change of #define 
* 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2445 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-02 21:18:01 +00:00
Chris Lattner
0e9c515439 * Simplify the code by not bothering to name the folded constant 
* 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2443 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-02 20:32:51 +00:00
Chris Lattner
a1be566213 * Add ability to eliminate a bunch of different cascading cast variations 
* Allow elimination of getelementptr X, uint 0 (which is a noop)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2428 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-02 17:06:02 +00:00
Chris Lattner
6c1ce21ee6 Add folding rules for mul X, 0 and mul X, 2 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2417 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 22:24:47 +00:00
Chris Lattner
0dbfc05a2a Significantly clean up SCCP pass. Now the two classes are merged and in 
an anonymous namespace where they belong.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2415 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 21:26:08 +00:00
Chris Lattner
f737121054 Range insertion now returns an iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2414 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 21:25:34 +00:00
Chris Lattner
94cf3b1c67 Remove unused files: This is the old induction varaible cannonicalization 
pass built on top of interval analysis


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2411 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 20:18:00 +00:00
Chris Lattner
72a1d4e126 changes because iMemory.h no longer #includes DerivedTypes.h 
This only requires Type.h anyway


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2405 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 18:48:30 +00:00
Chris Lattner
c6f3ae5c66 Eliminate duplicate or unneccesary #include's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2397 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 17:42:12 +00:00
Chris Lattner
8b054c0eb9 Remove broken assertion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2396 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 16:20:25 +00:00
Chris Lattner
96c466b06a Add new optional getPassName() virtual function that a Pass can override 
to make debugging output a lot nicer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2395 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 14:57:45 +00:00
Chris Lattner
097632eae3 More cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2392 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 01:58:47 +00:00
Chris Lattner
2f6f03bddd Code cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2391 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-29 01:22:55 +00:00
Chris Lattner
97e52e4336 Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2386 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-28 21:27:06 +00:00
Chris Lattner
31bcdb822f Split ConstantVals.h into Constant.h and Constants.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2378 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-28 19:55:58 +00:00
Chris Lattner
1b7f7dc4b4 Eliminate the cfg namespace, moving LoopInfo, Dominators, Interval* classes 
to the global namespace


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2370 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-28 16:21:30 +00:00
Chris Lattner
d80e973cec Initial checkin of simple&fast SSA based GCSE algorithm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2338 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-28 00:47:11 +00:00
Chris Lattner
f57b845547 * Rename MethodPass class to FunctionPass 
- 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2333 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-27 06:56:12 +00:00