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path: root/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
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2007-08-04refactor some code to shrink PromoteMem2Reg::run a bitChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40805 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04add a typedef, no other change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40804 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04avoid an unneeded vector copy. This speeds up mem2reg on the testcase Chris Lattner
in PR1432 by 6% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40803 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-04make RenamePassWorkList a local var instead of an ivar.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40802 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-07Use DominatorTree instead of ETForest.Devang Patel
This allows faster immediate domiantor walk. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37500 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-25Mem2Reg does not need TargetData.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36444 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-25Remove unused function argument.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36441 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-21Fix a comment.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36299 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-20Move more passes to using ETForest instead of DominatorTree.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36271 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-26Reduce malloc/free traffic.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35370 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-09Remove dead comments.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35053 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-09Avoid recursion. Use iterative algorithm for RenamePass().Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35052 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-07redesign the primary datastructure used by mem2reg to eliminate anChris Lattner
std::map of std::vector's (ouch!). This speeds up mem2reg by 10% on 176.gcc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33974 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05With the last change, we no longer need both directions of mapping fromChris Lattner
BBNumbers. Instead of using a bi-directional mapping, just use a single densemap. This speeds up mem2reg on 176.gcc by 8%, from 1.3489 to 1.2485s. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33940 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05Simplify use of DFBlocks, this makes no noticable performance difference,Chris Lattner
but paves the way to eliminate BBNumbers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33938 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05Switch InsertedPHINodes back to SmallPtrSet now that the SmallPtrSet::eraseChris Lattner
bug is fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33932 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05switch a SmallPtrSet back to an std::set for now, this caused problems.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33930 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05switch an std::set over to a SmallPtrSet, speeding up mem2reg 6% on 176.gcc.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33929 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05switch an std::set over to SmallPtrSet, speeding up mem2reg 3.4% on 176.gcc.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33928 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05eliminate some malloc traffic, this speeds up mem2reg by 3.4%.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33927 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-27s|llvm/Support/Visibility.h|llvm/Support/Compiler.h|Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29911 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Use hidden visibility to make symbols in an anonymous namespace getChris Lattner
dropped. This shrinks libllvmgcc.dylib another 67K git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28975 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-27Fix some nondeterminstic behavior in the mem2reg pass that (in addition toChris Lattner
nondeterminism being bad) could cause some trivial missed optimizations (dead phi nodes being left around for later passes to clean up). With this, llvm-gcc4 now bootstraps and correctly compares. I don't know why I never tried to do it before... :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27984 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18Implement a refinement to the mem2reg algorithm for cases where an allocaChris Lattner
has a single def. In this case, look for uses that are dominated by the def and attempt to rewrite them to directly use the stored value. This speeds up mem2reg on these values and reduces the number of phi nodes inserted. This should address PR665. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24411 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18This needs proper dominanceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24410 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05This code can handle non-dominating instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22667 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization intoNate Begeman
BasicBlock's removePredecessor routine. This requires shuffling around the definition and implementation of hasContantValue from Utils.h,cpp into Instructions.h,cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22664 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27Eliminate all remaining tabs and trailing spaces.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-30Fix PR590 and Transforms/Mem2Reg/2005-06-30-ReadBeforeWrite.ll.Chris Lattner
The optimization for locally used allocas was not safe for allocas that were read before they were written. This change disables that optimization in that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22318 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21Remove trailing whitespaceMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-30Fix test/Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llxChris Lattner
This only fails on darwin or on X86 under valgrind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18377 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-18Correction to allow compilation with Visual C++.Reid Spencer
Patch contributed by Morten Ofstad. Thanks Morten! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17123 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-18Fix a bug that occurs when the constant value is the result of an invoke. InChris Lattner
particular, invoke ret values are only live in the normal dest of the invoke not in the unwind dest. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17108 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-17When inserting PHI nodes, don't insert any phi nodes that are obviouslyChris Lattner
unneccesary. This allows us to delete several hundred phi nodes of the form PHI(x,x,x,undef) from 253.perlbmk and probably other programs as well. This implements Mem2Reg/UndefValuesMerge.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17098 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-16When promoting mem2reg, make uninitialized values become undef isntead of 0.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17045 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-19Remove a whole bunch of horrible hacky code that was used to promote allocasChris Lattner
whose addresses where used by trivial phi nodes and select instructions. This is now performed by the instcombine pass, which is more powerful, is much simpler, and is faster. This allows the deletion of a bunch of code, two FIXME's and two gotos. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16406 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-18Make sure to remove the Select instruction as wellChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16389 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-15If given an AliasSetTracker object to update, update it.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16347 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-03Fixes to make LLVM compile with vc7.1.Alkis Evlogimenos
Patch contributed by Paolo Invernizzi! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16152 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-01Changes For Bug 352Reid Spencer
Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-29Fix #includes of i*.h => Instructions.h as per PR403.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15334 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-19Change to use the StableBasicBlockNumbering classChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14247 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-19Do not let the numbering of PHI nodes placed in the function depend onChris Lattner
non-deterministic things like the ordering of blocks in the dominance frontier of a BB. Unfortunately, I don't know of a better way to solve this problem than to explicitly sort the BB's in function-order before processing them. This is guaranteed to slow the pass down a bit, but is absolutely necessary to get usable diffs between two different tools executing the mem2reg or scalarrepl pass. Before this, bazillions of spurious diff failures occurred all over the place due to the different order of processing PHIs: - %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.0, uint 0, uint 0 + %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.1, uint 0, uint 0 Now, the diffs match. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14244 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-08Implement ScalarRepl/select_promote.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12779 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03Bunch up all locally used allocas by the block they are allocated in, andChris Lattner
process them all as a group. This speeds up SRoA/mem2reg from 28.46s to 0.62s on the testcase from PR209. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11100 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-03Handle extremely trivial cases extremely efficiently. This speeds upChris Lattner
SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11099 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-12Implement Transforms/ScalarRepl/phinodepromote.ll, which is an importantChris Lattner
case that the C/C++ front-end generates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10761 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-09Finegrainify namespacificationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10727 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
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