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1350 Commits

Author SHA1 Message Date
Chris Lattner
2a88bb7065 - Implement SCCP of getelementptr instructions 
- Implement SCCP of globals into ConstantExprs hopefully opening new
   opportunities for more SCCP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3555 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-30 23:39:00 +00:00
Chris Lattner
2964f3624c Really minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3549 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-30 22:53:30 +00:00
Chris Lattner
14987f16b4 - GCSE now no longer counts instructions not removed (due to no common 
dominator as being removed)
  - GCSE now uses new Value #'ing interface, instead of dealing with AA itself
  - GCSE worklist implementation much simpler, class cleaned up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3533 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-30 20:22:29 +00:00
Chris Lattner
e6f9a91618 - instcombine demorgan's law: and (not A), (not B) == not (or A, B) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3495 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-23 18:32:43 +00:00
Chris Lattner
cc63f1c674 Eliminated the MemAccessInst class, folding contents into GEP class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3487 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 23:37:20 +00:00
Chris Lattner
24ea74eb9a Load & StoreInst no longer derive from MemAccessInst, so we don't have 
to handle indexing anymore


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3485 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 22:49:05 +00:00
Chris Lattner
f5e84aa088 Add capability of using pointer analysis to LICM 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3478 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 21:39:55 +00:00
Chris Lattner
0712d55512 Remove long obsolete comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3476 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 21:25:54 +00:00
Chris Lattner
c20e24524f Instcombine PHI's of the form %PN = phi PN, X into X and 
%PN = phi PN, PN, PN into 0 (because the phi must not be reachable)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3470 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 20:22:01 +00:00
Chris Lattner
d456ec983c Convert GCSE pass to use new alias analysis infrastructure 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3463 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-22 18:24:48 +00:00
Chris Lattner
a69fd90358 - Split Dominators.h into Dominators.h & PostDominators.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3432 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-21 23:43:50 +00:00
Chris Lattner
905641bb01 Remove an optimization that isn't. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3419 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-21 22:10:06 +00:00
Chris Lattner
05bd1b2eee - instcombine (~(a < b)) into (a >= b) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3406 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-20 18:24:26 +00:00
Chris Lattner
f02c46834a - implemented instcombine of phi (X, X, X) -> X 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3397 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-20 15:35:35 +00:00
Chris Lattner
9b76123124 Promote getelementptr instructions to constexprs if we can. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3368 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-17 22:21:59 +00:00
Chris Lattner
3ecce66e25 Handle more cases of cast-of-cast in more general forms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3347 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-15 16:15:25 +00:00
Chris Lattner
5cf6f112e6 Implement capability to fold this: 
uint %test4(int %A, int %B) {
        %COND = setlt int %A, %B                ; <bool> [#uses=1]
        %result = cast bool %COND to uint               ; <uint> [#uses=1]
        ret uint %result
}
into a single cast instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3339 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 23:21:10 +00:00
Chris Lattner
db6e4d6625 Avoid inserting an entry block unless we need it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3336 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 21:35:02 +00:00
Chris Lattner
9b2b80fd48 Fix bug introduced in last checkin due to CastInst not being visible 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3327 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 18:22:19 +00:00
Chris Lattner
0513e9fe03 Remove support for NOT instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3323 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 18:18:02 +00:00
Chris Lattner
48a4531ee4 Remove extra #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3322 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 18:17:32 +00:00
Chris Lattner
b804760b56 Remove support for unary operators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3318 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 17:53:45 +00:00
Chris Lattner
af2930efa0 - Fix InstCombine pass to not generate or process NOT instructions 
- Fixed testcases to not use them either.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3315 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-14 17:51:49 +00:00
Chris Lattner
572f4a01a5 - Rename ConstantGenericIntegral -> ConstantIntegral 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3300 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-13 17:50:24 +00:00
Chris Lattner
233f7dcde3 * Factor a bunch of code by using ReplaceInstUsesWith 
* Move isMaxValue, isMinValue, isAllOnesValue to Constants.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3290 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-12 21:17:25 +00:00
Chris Lattner
8b170945ea New functionality for instcombine: 
* New ReplaceInstUsesWith function to factor out tons of common code
     This needs to be used more in the future still, but it's a good start
   * New InsertNewInstBefore to allow multi-instruction replacements
   * Change getMaxValue functions to isAllOnesValue function, which doesn't
     have to CREATE/lookup a new constant.  Also the name is accurate
   * Add new isMaxValue, isMinValue, isMaxValueMinusOne, isMinValuePlusOne
     functions:  This should be moved to Constant* classes eventually
   * Implement xor X, ALLONES -> not X
   * Fold ALL setcc's of booleans away
   * Handle various SetCC's for integers against values at the end of their
     ranges, possibly off by one.  This implements the setcc-strength-reduce.ll
     testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3286 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-09 23:47:40 +00:00
Chris Lattner
5f0eb8da62 - Cleaned up the interface to AnalysisUsage to take analysis class names 
instead of ::ID's.
 - Pass::getAnalysis<> now no longer takes an optional argument


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3265 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-08 19:01:30 +00:00
Vikram S. Adve
900fd63d12 Eliminate cast instructions: use only GEPs in decomposed sequence. 
Don't decompose if there are 2 indices with 0 as first index.
Compute Changed flag correctly in runOnBasicBlock().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3233 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-03 13:21:15 +00:00
Chris Lattner
8fd217cb29 Fix bug: test/Regression/Transforms/InstCombine/2002-08-02-CastTest.ll 
Implement feature: Cast's can now be converted to bitwise AND expressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3225 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-02 20:00:25 +00:00
Chris Lattner
90ac28cf3e * Cleanups of instcombine 
- Reenable gep (gep x) -> x
   - Make instcombine do dead instruction elimination where it's really
     easy.  Now visitors don't have to ensure they aren't not processing
     dead instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3222 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-02 19:29:35 +00:00
Chris Lattner
be1ecf6050 Fix bug: test/Regression/Transforms/GCSE/2002-05-21-NoSharedDominator.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3215 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-08-02 18:06:01 +00:00
Chris Lattner
446698b63d * Fix bug: test/Regression/Transforms/ADCE/2002-07-17-AssertionFailure.ll 
which was caused by us not running the "drop references of dead
  instructions" code when there were no basic blocks that were dead.

  We still don't want to do some of the stuff we do if there are dead
  basic blocks, but we DO want to drop references of dead instructions,
  so we factor the common code out to a new method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3137 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-30 00:22:34 +00:00
Chris Lattner
a61fab8c6d Add code to ensure that no PHI nodes are left laying around with their 
arguments dropped.  This fixes bug:
   test/Regression/Transforms/ADCE/2002-07-17-PHIAssertion.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3134 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-29 23:40:46 +00:00
Chris Lattner
011de07117 Fix bug: test/Regression/Transforms/ADCE/2002-07-29-Segfault.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3129 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-29 22:31:39 +00:00
Chris Lattner
a59cbb2043 * Standardize how analysis results/passes as printed with the print() virtual 
methods
* Eliminate AnalysisID:  Now it is just a typedef for const PassInfo*
* Simplify how AnalysisID's are initialized
* Eliminate Analysis/Writer.cpp/.h: incorporate printing functionality into
  the analyses themselves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3116 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-27 01:12:17 +00:00
Chris Lattner
a6275ccdf5 * Add support for different "PassType's" 
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Add support for different "PassType's"
* Add new RegisterOpt/RegisterAnalysis templates for registering passes that
  are to show up in opt or analyze
* Register Analyses now
* Change optimizations to use RegisterOpt instead of RegisterPass
* Remove getPassName implementations from various subclasses


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3113 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-26 21:12:46 +00:00
Chris Lattner
ce6ef112c4 *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3105 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-26 18:40:14 +00:00
Chris Lattner
0c0edf8afc *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3075 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-25 06:17:51 +00:00
Chris Lattner
f629309f74 *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3016 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-23 18:06:35 +00:00
Chris Lattner
56d27019e6 *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3002 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-23 17:52:38 +00:00
Chris Lattner
43199a036d Disable folding g-e-p instructions into loads and stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2870 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-07-10 22:37:17 +00:00
Chris Lattner
3e009942ed *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2813 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-06-30 16:25:25 +00:00
Anand Shukla
5ba99bd124 changes to make it compatible with 64bit gcc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2792 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-06-25 21:07:58 +00:00
Chris Lattner
7e70829632 MEGAPATCH checkin. 
For details, See: docs/2002-06-25-MegaPatchInfo.txt


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2779 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-06-25 16:13:24 +00:00
Chris Lattner
84369b323e Avoid deleting individual instructions until AFTER dead blocks have dropped 
their references.  This fixes bug:
    test/Regression/Transforms/ADCE/2002-05-28-Crash*.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2753 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-28 21:38:16 +00:00
Chris Lattner
16da494c81 Simplify the interface to local DCE and Constant prop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2749 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-26 20:18:18 +00:00
Chris Lattner
c2b42b38f9 Fold add X, 0 for floating point types as well 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2734 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-23 17:11:38 +00:00
Chris Lattner
d9036a1aad Fix and implement ADCE to finally work! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2720 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-22 21:32:16 +00:00
Chris Lattner
f016ea4ff8 Use the new DEBUG(x) macro to allow debugging code to be enabled on the commandline 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2713 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-22 17:17:27 +00:00
Chris Lattner
7f9412b50d Fix bug: test/Regression/Transforms/SCCP/2002-05-21-InvalidSimplify.ll 
Improperly handling edges... by not marking them alive properly


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2707 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-05-22 16:07:20 +00:00