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1117 Commits

Author SHA1 Message Date
Chris Lattner c6509f487b Fix bug: 2002-12-05-MissedConstProp.ll pointed out by Casey Carter 
llvm-svn: 4935
 2002-12-05 22:41:53 +00:00
Chris Lattner a2620ac156 Fix warning 
llvm-svn: 4649
 2002-11-09 00:49:43 +00:00
Chris Lattner 5d606a09ff Instcombine this away: 
%A = getelementptr [4 x int]* %M, long 0, long 0
        %B = getelementptr int* %A, long 2

llvm-svn: 4536
 2002-11-04 16:43:32 +00:00
Chris Lattner 1085bdf49f Add a transformation to turn: 
malloc Ty, C
int
  malloc [C x Ty], 1

llvm-svn: 4534
 2002-11-04 16:18:53 +00:00
Misha Brukman 632df28deb Fix spelling of `propagate'. 
llvm-svn: 4423
 2002-10-29 23:06:16 +00:00
Chris Lattner 820d971233 - Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG to 
setPreservesCFG to be less confusing.

llvm-svn: 4255
 2002-10-21 20:00:28 +00:00
Chris Lattner 394617f38b It is illegal for PHI nodes to have zero values, delete the code to handle them 
llvm-svn: 4071
 2002-10-08 17:07:39 +00:00
Chris Lattner 2e0fb39d87 Fold ashr -1, X into -1 
llvm-svn: 4070
 2002-10-08 16:16:40 +00:00
Chris Lattner bf3a099a62 Updates to work with recent Statistic's changes: 
* Renamed StatisticReporter.h/cpp to Statistic.h/cpp
    * Broke constructor to take two const char * arguments instead of one, so
      that indendation can be taken care of automatically.
    * Sort the list by pass name when printing
    * Make sure to print all statistics as a group, instead of randomly when
      the statistics dtors are called.
    * Updated ProgrammersManual with new semantics.

llvm-svn: 4002
 2002-10-01 22:38:41 +00:00
Chris Lattner 555518c70f Optimize away cases like: 
%cast109 = cast uint %cast212 to short          ; <short> [#uses=1]
        %cast214 = cast short %cast109 to uint          ; <uint> [#uses=1]
        %cast215 = cast uint %cast214 to short          ; <short> [#uses=1]

llvm-svn: 3897
 2002-09-23 23:39:43 +00:00
Chris Lattner a8339e3613 Fix bug: test/Regression/Transforms/InstCombine/2002-09-17-GetElementPtrCrash.ll 
Thanks to Casey for finding it!

llvm-svn: 3783
 2002-09-17 21:05:42 +00:00
Chris Lattner 136dab7d86 - Change getelementptr instruction to use long indexes instead of uint 
indexes for sequential types.

llvm-svn: 3682
 2002-09-11 01:21:33 +00:00
Chris Lattner 55f3d94b40 Add cannonicalization of shl X, 1 -> add X, X 
llvm-svn: 3671
 2002-09-10 23:04:09 +00:00
Chris Lattner e103d178c5 Hack unneccesary now that shifts of pointers are no longer legal! 
llvm-svn: 3640
 2002-09-10 03:50:54 +00:00
Chris Lattner b8bba6f765 Fix Bug: test/Regression/Transforms/InstCombine/2002-09-08-PointerShiftBug.ll 
llvm-svn: 3626
 2002-09-08 21:39:07 +00:00
Chris Lattner b0b412e66e - Renamed Type::isIntegral() to Type::isInteger() 
- Added new method Type::isIntegral() that is the same as isInteger, but
    also accepts bool.

llvm-svn: 3574
 2002-09-03 01:08:28 +00:00
Chris Lattner 99f48c614d Add constant prop & DIE to InstCombine, so it cleans up after itself 
llvm-svn: 3568
 2002-09-02 04:59:56 +00:00
Chris Lattner 65217ff294 - instcombine demorgan's law: and (not A), (not B) == not (or A, B) 
llvm-svn: 3495
 2002-08-23 18:32:43 +00:00
Chris Lattner f6c0efa754 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)

llvm-svn: 3470
 2002-08-22 20:22:01 +00:00
Chris Lattner b8d6e40ed7 - instcombine (~(a < b)) into (a >= b) 
llvm-svn: 3406
 2002-08-20 18:24:26 +00:00
Chris Lattner 9cd1e66155 - implemented instcombine of phi (X, X, X) -> X 
llvm-svn: 3397
 2002-08-20 15:35:35 +00:00
Chris Lattner c59af1d257 Promote getelementptr instructions to constexprs if we can. 
llvm-svn: 3368
 2002-08-17 22:21:59 +00:00
Chris Lattner 3732acab85 Handle more cases of cast-of-cast in more general forms. 
llvm-svn: 3347
 2002-08-15 16:15:25 +00:00
Chris Lattner 0bb75910e2 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.

llvm-svn: 3339
 2002-08-14 23:21:10 +00:00
Chris Lattner 31ae863284 - Fix InstCombine pass to not generate or process NOT instructions 
- Fixed testcases to not use them either.

llvm-svn: 3315
 2002-08-14 17:51:49 +00:00
Chris Lattner 8328263606 - Rename ConstantGenericIntegral -> ConstantIntegral 
llvm-svn: 3300
 2002-08-13 17:50:24 +00:00
Chris Lattner e6794490ec * Factor a bunch of code by using ReplaceInstUsesWith 
* Move isMaxValue, isMinValue, isAllOnesValue to Constants.h

llvm-svn: 3290
 2002-08-12 21:17:25 +00:00
Chris Lattner 6d14f2a7ae 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.

llvm-svn: 3286
 2002-08-09 23:47:40 +00:00
Chris Lattner 650b6da0f9 Fix bug: test/Regression/Transforms/InstCombine/2002-08-02-CastTest.ll 
Implement feature: Cast's can now be converted to bitwise AND expressions.

llvm-svn: 3225
 2002-08-02 20:00:25 +00:00
Chris Lattner ae7a0d39fd * 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.

llvm-svn: 3222
 2002-08-02 19:29:35 +00:00
Chris Lattner c8b7092e54 * 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

llvm-svn: 3113
 2002-07-26 21:12:46 +00:00
Chris Lattner b28b680155 *** empty log message *** 
llvm-svn: 3016
 2002-07-23 18:06:35 +00:00
Chris Lattner b2c5cb2525 Disable folding g-e-p instructions into loads and stores. 
llvm-svn: 2870
 2002-07-10 22:37:17 +00:00
Chris Lattner 113f4f4609 MEGAPATCH checkin. 
For details, See: docs/2002-06-25-MegaPatchInfo.txt

llvm-svn: 2779
 2002-06-25 16:13:24 +00:00
Chris Lattner 9c2765d4aa Fold add X, 0 for floating point types as well 
llvm-svn: 2734
 2002-05-23 17:11:38 +00:00
Chris Lattner 170ed7b6a3 Fix bug: test/Regression/Transforms/InstCombine/2002-05-14-SubFailure.ll 
llvm-svn: 2627
 2002-05-14 16:44:07 +00:00
Chris Lattner 053c0939e3 Fix bug: test/Regression/Transforms/InstCombine/2002-05-14-TouchDeletedInst.ll 
"This testcase caused instcombine to fail because it got the same instruction on
it's worklist more than once (which is ok), but then deleted the instruction.
Since the inst stayed on the worklist, as soon as it came back up to be
processed, bad things happened, and opt asserted."

llvm-svn: 2623
 2002-05-14 15:24:07 +00:00
Chris Lattner 0b18c1d64e Add support for printing out statistics information when -stats is added to 
the command line

llvm-svn: 2601
 2002-05-10 15:38:35 +00:00
Chris Lattner 1fc23f382e Handle setcc <global*>, 0 instructions, Global pointers are never null! 
llvm-svn: 2582
 2002-05-09 20:11:54 +00:00
Chris Lattner ad3c495225 Add ability to transform (x - (y - z)) into (x + (z - y)) 
llvm-svn: 2566
 2002-05-09 01:29:19 +00:00
Chris Lattner 147e975c43 * Combine: A-(-B) -> A + B 
* Bugfix:  A + -B and -A + B

llvm-svn: 2561
 2002-05-08 22:46:53 +00:00
Chris Lattner b4cfa7ff97 Merge all individual .h files into a single Scalar.h file 
llvm-svn: 2537
 2002-05-07 20:03:00 +00:00
Chris Lattner 9b55e5a2f4 Reduce dependance on TransformInternals.h, instead using the TransformUtils library 
llvm-svn: 2518
 2002-05-07 18:12:18 +00:00
Chris Lattner a6e047a5d9 Only do masking for unsigned values! 
llvm-svn: 2504
 2002-05-06 18:54:59 +00:00
Chris Lattner bbbdd852b8 Handle X = phi Y --> X = Y 
llvm-svn: 2501
 2002-05-06 18:06:38 +00:00
Chris Lattner 5d6bec5e26 Combine not (not X) -> X 
llvm-svn: 2493
 2002-05-06 17:03:21 +00:00
Chris Lattner 9fa53de7e9 Support more cases... 
llvm-svn: 2490
 2002-05-06 16:49:18 +00:00
Chris Lattner f4cdbf34e5 Add many more instruction combination simplifications 
llvm-svn: 2484
 2002-05-06 16:14:14 +00:00
Chris Lattner 48a44f7e23 * Add ability to eliminate a bunch of different cascading cast variations 
* Allow elimination of getelementptr X, uint 0 (which is a noop)

llvm-svn: 2428
 2002-05-02 17:06:02 +00:00
Chris Lattner 31ba129cbe Add folding rules for mul X, 0 and mul X, 2 
llvm-svn: 2417
 2002-04-29 22:24:47 +00:00
Chris Lattner d5a847057b Eliminate duplicate or unneccesary #include's 
llvm-svn: 2397
 2002-04-29 17:42:12 +00:00
Chris Lattner 37104aace8 Add new optional getPassName() virtual function that a Pass can override 
to make debugging output a lot nicer.

llvm-svn: 2395
 2002-04-29 14:57:45 +00:00
Chris Lattner f12cc842b3 Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA 
llvm-svn: 2386
 2002-04-28 21:27:06 +00:00
Chris Lattner c8e665431b * 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

llvm-svn: 2333
 2002-04-27 06:56:12 +00:00
Chris Lattner 2716b5e524 Change Constant::getNullConstant to Constant::getNullValue 
llvm-svn: 2323
 2002-04-27 02:25:14 +00:00
Chris Lattner 260ab20422 Significantly rework InstructionCombining to work better and to be cleaner. 
We now use an InstVisitor to delegate to different cases that we are
interested in handling.  We also fix the FIXME's by adding users to the
worklist when appropriate.

llvm-svn: 2292
 2002-04-18 17:39:14 +00:00
Chris Lattner f40379e403 Store instructions always return void, so they never get a name 
llvm-svn: 2283
 2002-04-18 14:43:54 +00:00
Chris Lattner 3a60d04722 Eliminate cast of same type instructions. 
llvm-svn: 2251
 2002-04-15 19:45:29 +00:00
Chris Lattner 65b529fe6d ConstantHandling moved into VMCore library 
llvm-svn: 2165
 2002-04-08 20:18:09 +00:00
Chris Lattner 62b7fd136e Change references to the Method class to be references to the Function 
class.  The Method class is obsolete (renamed) and all references to it
are being converted over to Function.

llvm-svn: 2144
 2002-04-07 20:49:59 +00:00
Chris Lattner bee86626e1 Fix bug: test/Regression/Other/2002-03-11-InstCombineHang.ll 
llvm-svn: 1864
 2002-03-11 23:28:45 +00:00
Chris Lattner 04805fa29c Change over to use new style pass mechanism, now passes only expose small 
creation functions in their public header file, unless they can help it.

llvm-svn: 1816
 2002-02-26 21:46:54 +00:00
Chris Lattner 83d485b310 * Pull BasicBlock::pred_* and BasicBlock::succ_* out of BasicBlock.h and into 
llvm/Support/CFG.h
* Make pred & succ iterators for intervals global functions
* Add #includes that are now neccesary because BasicBlock.h doesn't include
  InstrTypes.h anymore

llvm-svn: 1750
 2002-02-12 22:39:50 +00:00
Chris Lattner 60a6591d83 Method.h no longer includes BasicBlock.h 
Method::inst_* is now in llvm/Support/InstIterator.h
GraphTraits specializations for BasicBlock and Methods are now in llvm/Support/CFG.h

llvm-svn: 1746
 2002-02-12 21:07:25 +00:00
Chris Lattner ee965abc36 Move stuff out of the Optimizations directories into the appropriate Transforms 
directories.  Eliminate the opt namespace.

llvm-svn: 1520
 2002-01-21 23:17:48 +00:00
Chris Lattner 7f74a56e24 Changes to build successfully with GCC 3.02 
llvm-svn: 1503
 2002-01-20 22:54:45 +00:00
Chris Lattner ca081257e5 initial checkin 
llvm-svn: 1480
 2001-12-14 16:52:21 +00:00