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path: root/lib/Transforms/Scalar/SCCP.cpp
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2004-01-12* Implement minor performance optimization for the getelementptr caseChris Lattner
* Implement SCCP of load instructions, implementing Transforms/SCCP/loadtest.ll This allows us to fold expressions like "foo"[2], even if the pointer is only a conditional constant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10767 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Implement SCCP/phitest.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10763 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09Finegrainify namespacificationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10725 91177308-0d34-0410-b5e6-96231b3b80d8
2003-11-11Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-20Added LLVM project notice to the top of every C++ source file.John Criswell
Header files will be on the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-18ADd support for the new varargs instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9225 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-10Fix spelling.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9027 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08Update commentChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8965 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08Use a set to keep track of which edges have been noticed as executable alreadyChris Lattner
to avoid reprocessing PHI nodes needlessly. This speeds up the big bad PHI testcase 43%: from 104.9826 to 73.5157s git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8964 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08Minor fixes here and thereChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8963 91177308-0d34-0410-b5e6-96231b3b80d8
2003-10-08Avoid building data structures we don't really need. This improves the runtimeChris Lattner
of a test that Bill Wendling sent me from 228.5s to 105s. Obviously there is more improvement to be had, but this is a nice speedup which should be "felt" by many programs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8962 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-08Add support for the unwind instructionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8408 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-27Fix bug: SCCP/2003-08-26-InvokeHandling.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8152 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-18Spell `necessary' correctly.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7944 91177308-0d34-0410-b5e6-96231b3b80d8
2003-08-01DEBUG got moved to Support/Debug.hChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7492 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-24Fix bug: SCCP/2003-06-24-OverdefinedPHIValue.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6883 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-20Hopefully, the final fix for `[Pp]ropogate'.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6251 91177308-0d34-0410-b5e6-96231b3b80d8
2003-05-08Handle va_arg instruction correctlyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6030 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-25Fix major problem with PHI node traversal: rechecking PHIs should go intoChris Lattner
the visit function. The worklist is for when their lattice value changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5927 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-25Minor non-functional changes:Chris Lattner
* Spell propagate right * Improve performance of phi node handling * Delete using directive * Other minor changes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5920 91177308-0d34-0410-b5e6-96231b3b80d8
2003-04-23Remove unnecesary &*'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5872 91177308-0d34-0410-b5e6-96231b3b80d8
2002-11-04Make sure to _delete_ memory allocated by worklistsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4523 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-29Fix spelling of `propagate'.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4423 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-21 - Rename AnalysisUsage::preservesAll to getPreservesAll & preservesCFG toChris Lattner
setPreservesCFG to be less confusing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4255 91177308-0d34-0410-b5e6-96231b3b80d8
2002-10-01Updates to work with recent Statistic's changes:Chris Lattner
* 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4002 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-30 - Implement SCCP of getelementptr instructionsChris Lattner
- 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
2002-08-22Eliminated the MemAccessInst class, folding contents into GEP class.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3487 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-14Remove extra #includesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3322 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-14Remove support for unary operatorsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3318 91177308-0d34-0410-b5e6-96231b3b80d8
2002-07-26* Add support for different "PassType's"Chris Lattner
* 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
2002-07-23*** empty log message ***Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3016 91177308-0d34-0410-b5e6-96231b3b80d8
2002-06-25MEGAPATCH checkin.Chris Lattner
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
2002-05-22Use the new DEBUG(x) macro to allow debugging code to be enabled on the ↵Chris Lattner
commandline git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2713 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-22Fix bug: test/Regression/Transforms/SCCP/2002-05-21-InvalidSimplify.llChris Lattner
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
2002-05-20Fix bug: test/Regression/Transforms/SCCP/2002-05-20-MissedIncomingValue.llChris Lattner
That was causing a miscompilation of strtol/atoi plus others git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2669 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-10Add support for printing out statistics information when -stats is added toChris Lattner
the command line git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2601 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-07Merge all individual .h files into a single Scalar.h fileChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2537 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-07Add #include no longer included by llvm/Transforms/Scalar/ConstantProp.hChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2517 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-07* Convert InstWorkList to vector instead of set, because on big programs itChris Lattner
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
2002-05-06Implement constant propogation of shift instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2471 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-02Ok, really it only takes me 3 times to get this right!Chris Lattner
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
2002-05-02Oops, disable debugging code all the way. :)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2447 91177308-0d34-0410-b5e6-96231b3b80d8
2002-05-02* Finish the implementation of isEdgeFeasible this fixes bug:Chris Lattner
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* Enable SCCP debugging to be turned on with a simple change of #defineChris Lattner
* 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* Simplify the code by not bothering to name the folded constantChris Lattner
* 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
2002-04-29Significantly clean up SCCP pass. Now the two classes are merged and inChris Lattner
an anonymous namespace where they belong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2415 91177308-0d34-0410-b5e6-96231b3b80d8
2002-04-29Eliminate duplicate or unneccesary #include'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2397 91177308-0d34-0410-b5e6-96231b3b80d8
2002-04-29Add new optional getPassName() virtual function that a Pass can overrideChris Lattner
to make debugging output a lot nicer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2395 91177308-0d34-0410-b5e6-96231b3b80d8
2002-04-28Tighten up the AnalysisUsage of lots of passes, primarily to correctly ↵Chris Lattner
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
2002-04-28Split ConstantVals.h into Constant.h and Constants.hChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2378 91177308-0d34-0410-b5e6-96231b3b80d8
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