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path: root/lib/Analysis/LoadValueNumbering.cpp
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2007-05-03Drop 'const'Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-02Use 'static const char' instead of 'static const int'.Devang Patel
Due to darwin gcc bug, one version of darwin linker coalesces static const int, which defauts PassID based pass identification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36652 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01Do not use typeinfo to identify pass in pass manager.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-17Remove use of Instruction::getNextChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36201 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07Expunge DomSet from LoadValueNumbering. This is part of the continuingOwen Anderson
work on PR1171. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35723 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05Make classes in anonymous namespaces use VISIBILITY_HIDDEN to help reduceReid Spencer
LLVM's footprint and speed up linking. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33941 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-28simplify AnalysisGroup registration, eliminating one typeid call.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29932 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-27eliminate RegisterOpt. It does the same thing as RegisterPass.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29925 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-08Fix a problem exposed by the et-forest work. Load-vn needs these passes liveChris Lattner
whenever it is live, not just when load-vn is computed initially git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25146 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-20the correct fix was to fix AliasAnalysis.getModRefInfoAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22268 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-20prevent GCSE from forwarding stores to loads around vaarg. This is uggly, ↵Andrew Lenharth
and I am trying to fix the AliasInfo, as it should catch the problem instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22266 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21Remove trailing whitespaceMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21416 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29Due to previous simplifications, we can simplify the data structures beingChris Lattner
used here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19913 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29Properly handle volatile.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19912 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29Remove some useless map operations. Loads/stores that are in the sameChris Lattner
BB as the load are not included in the Cand* sets at all. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19911 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29Before doing expensive global analysis, check to make sure the pointer isChris Lattner
not invalidated on entry and on exit of the block. This fixes some N^2 behavior in common cases, and speeds up gcc another 5% to 22.35s. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19910 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29Minor simplification/speedup. Replaces a set lookup with a pointer comparison.Chris Lattner
This speeds up 176.gcc from 25.73s to 23.48s, which is 9.5% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19907 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29Eliminate generality that is not buying us anything. In particular, thisChris Lattner
will cause us to miss cases where the input pointer to a load could be value numbered to another load. Something like this: %X = load int* %P1 %Y = load int* %P2 Those are obviously the same if P1/P2 are the same. The code this patch removes attempts to handle that. However, since GCSE iterates, this doesn't actually buy us anything: GCSE will first replace P1 or P2 with the other one, then the load can be value numbered as equal. Removing this code speeds up gcse a lot. On 176.gcc in debug mode, this speeds up gcse from 29.08s -> 25.73s, a 13% savings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19906 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29If we see:Chris Lattner
%A = alloca int %V = load int* %A value number %V to undef, not 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19905 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-15Eliminate a virtual method callChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18964 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
2004-07-29Fix #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
2004-07-27Make the create...() functions for some of these passes return a FunctionPass *.Brian Gaeke
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15276 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-23Implement the interfaces to update value numbering information. Add anChris Lattner
assert. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13679 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-03Implement test/Regression/Transforms/GCSE/undefined_load.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12641 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-16Add some missing functions. Make sure to handle calls together in case theChris Lattner
client has another VN implementation that can VN calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12427 91177308-0d34-0410-b5e6-96231b3b80d8
2004-03-15Implement CSE of call instructions in the most trivial case. This implementsChris Lattner
GCSE/call_cse.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12419 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05In a "seeing the forest through the trees" kinda situation, I realized that aChris Lattner
complete rewrite of load-vn will make it a bit faster. This changes speeds up the gcse pass (which uses load-vn) from 25.45s to 0.42s on the testcase in PR209. I've also verified that this gives the exact same results as the old one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11132 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05This is a big diff with no functionality change. We just reorder some code,Chris Lattner
which causes big reindentation. While I'm at it, I fix the fixme by removing some dead code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11131 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05finegrainify namespacificationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11130 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Fixed Chris' typo.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11128 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-05Implement optimizations for handling large basic blocks.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11126 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
2003-09-11Fixed spelling and grammar.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8478 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-11Spell `definitely' correctly.Misha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8466 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-08Fix bug: RLE-Preserve-Volatile.llChris Lattner
Volatile loads and stores must not be value numbered git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8398 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
2003-06-29If the alias analysis algorithm we are using can provide MUST alias information,Chris Lattner
expose it directly as value numbering information git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6972 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-16Implement forwarding from stores to loads of must-aliased pointers.Chris Lattner
This implements: GCSE/2003-06-13-LoadStoreEliminate.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6694 91177308-0d34-0410-b5e6-96231b3b80d8
2003-02-26Calculate and pass load sizes to the alias analysis infrastructureChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5635 91177308-0d34-0410-b5e6-96231b3b80d8
2002-08-30Initial implementation of value numbering for load instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3540 91177308-0d34-0410-b5e6-96231b3b80d8
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