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b9a6634466
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113 Commits

Author SHA1 Message Date
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
Chris Lattner
f2361c5e5c Changes because the Terminator::getSuccessor function now FAILS if successor 
IDX is out of range instead of returning null.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2332 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-27 03:15:45 +00:00
Chris Lattner
1a18b7cf80 Change Constant::getNullConstant to Constant::getNullValue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2323 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-27 02:25:14 +00:00
Chris Lattner
dd841aeb8d 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2292 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-18 17:39:14 +00:00
Chris Lattner
2a632551a7 Convert SCCP over to use InstVisitor instead of hand crafted switch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2286 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-18 15:13:15 +00:00
Chris Lattner
6428a27ee3 GEP instructions can never be constant propogated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2284 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-18 14:44:13 +00:00
Chris Lattner
27e3420ce9 Store instructions always return void, so they never get a name 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2283 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-18 14:43:54 +00:00
Chris Lattner
8d70cd9607 Eliminate cast of same type instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2251 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-15 19:45:29 +00:00
Chris Lattner
73e214244f Move FunctionArgument out of iOther.h into Argument.h and rename class to 
be 'Argument' instead of FunctionArgument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2216 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-09 19:48:49 +00:00
Chris Lattner
42a412711c Add #includes to make up for #includes pruned out of header files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2207 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-09 18:37:46 +00:00
Chris Lattner
237e6d10f2 s/Method/Function 
Remove extraneous #includes of llvm/Assembly/Writer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2178 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-08 22:03:00 +00:00
Chris Lattner
968ddc921e ConstantHandling moved into VMCore library 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2165 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-08 20:18:09 +00:00
Chris Lattner
2fbfdcffd3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2144 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-04-07 20:49:59 +00:00
Chris Lattner
79df7c0aaa Change references from Method to Function 
change references from MethodARgument to FunctionArgument


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1991 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-03-26 18:01:55 +00:00
Vikram S. Adve
98d64f8d51 Major overhaul to support arbitrary mixed array and structure indices. 
Also moved to the Scalar/ directory and renamed to "MultiDim".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1961 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-03-24 03:21:18 +00:00
Vikram S. Adve
dfbbf7a631 New pass to decompose multi-dimensional array references into 
a sequence of 1-D references, using a sequence of getElementPtrs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1948 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-03-23 20:43:39 +00:00
Chris Lattner
a007bc2c14 Fix bug: test/Regression/Other/2002-03-11-InstCombineHang.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1864 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-03-11 23:28:45 +00:00
Chris Lattner
0fce76a009 Fix bug: test/Regression/Other/2002-03-11-ConstPropCrash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1858 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-03-11 22:11:07 +00:00
Chris Lattner
bd0ef77cde 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1816 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-02-26 21:46:54 +00:00
Chris Lattner
455889aa79 * 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1750 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-02-12 22:39:50 +00:00
Chris Lattner
221d688a5e 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1746 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-02-12 21:07:25 +00:00
Chris Lattner
fcc93d2c0a MethodPass's are now guaranteed to not be run on external methods! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1611 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-31 00:51:24 +00:00
Chris Lattner
793c6b80d3 Convert xforms over to new pass structure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1605 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-31 00:45:11 +00:00
Chris Lattner
699a7bfd6b Remove extraneous #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1588 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-26 22:47:32 +00:00
Chris Lattner
33fa13c57c Remove opt namespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1587 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-26 22:47:07 +00:00
Chris Lattner
c560f88e91 Implement new DeadInstElmination pass 
remove old comment


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1555 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-23 05:48:24 +00:00
Chris Lattner
59b6b8e0b3 Move stuff out of the Optimizations directories into the appropriate Transforms 
directories.  Eliminate the opt namespace.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1520 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-21 23:17:48 +00:00
Chris Lattner
697954c15d Changes to build successfully with GCC 3.02 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1503 91177308-0d34-0410-b5e6-96231b3b80d8
 2002-01-20 22:54:45 +00:00
Chris Lattner
8a2a311939 initial checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1480 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-12-14 16:52:21 +00:00
Chris Lattner
9102aee528 Assertion could never fail because another one would in it's place. :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1449 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-12-13 00:45:40 +00:00
Chris Lattner
4753bf21a4 Actually return true when a change has been made 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1425 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-12-05 19:41:33 +00:00
Chris Lattner
3bf915f2a2 Fix bugs, don't do external methods which causes segv. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1414 91177308-0d34-0410-b5e6-96231b3b80d8
 2001-12-04 08:13:06 +00:00