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path: root/lib/Analysis/AliasSetTracker.cpp
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2009-03-30getEntryFor() may invalidate DenseMap iterator.Devang Patel
Walking an invalidated iterator is not a good idea. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68047 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-09reimplement AliasSetTracker in terms of DenseMap instead of hash_map,Chris Lattner
hopefully no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66398 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Ignore the debug info intrinsics when adding instructions into alias sets.Zhou Sheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65934 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Tidy up several unbeseeming casts from pointer to intptr_t.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-22Free and vaarg are not really volatile.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51407 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-20Fix PR2346 by marking vaarg as volatile so that licm doesn't try toChris Lattner
hoist them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51356 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-13Clean up the use of static and anonymous namespaces. This turned upDan Gohman
several things that were neither in an anonymous namespace nor static but not intended to be global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-21Fix the way AliasSet::print prints "may alias".Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50051 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-14Teach AliasSetTracker about VAArgInst.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49674 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-20Restore isCFGOnly property of various analysis passes.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48579 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-19PassInfo keep tracks whether a pass is an analysis pass or not.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48554 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-19Do not use virtual function to identify an analysis pass.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48520 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-18Identify Analysis pass.Devang Patel
Do not run analysis pass again if analysis info is still available. This fixes PR1441. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48476 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01Integrate the readonly/readnone logic more deeplyDuncan Sands
into alias analysis. This meant updating the API which now has versions of the getModRefBehavior, doesNotAccessMemory and onlyReadsMemory methods which take a callsite parameter. These should be used unless the callsite is not known, since in general they can do a better job than the versions that take a function. Also, users should no longer call the version of getModRefBehavior that takes both a function and a callsite. To reduce the chance of misuse it is now protected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44487 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-01Executive summary: getTypeSize -> getTypeStoreSize / getABITypeSize.Duncan Sands
The meaning of getTypeSize was not clear - clarifying it is important now that we have x86 long double and arbitrary precision integers. The issue with long double is that it requires 80 bits, and this is not a multiple of its alignment. This gives a primitive type for which getTypeSize differed from getABITypeSize. For arbitrary precision integers it is even worse: there is the minimum number of bits needed to hold the type (eg: 36 for an i36), the maximum number of bits that will be overwriten when storing the type (40 bits for i36) and the ABI size (i.e. the storage size rounded up to a multiple of the alignment; 64 bits for i36). This patch removes getTypeSize (not really - it is still there but deprecated to allow for a gradual transition). Instead there is: (1) getTypeSizeInBits - a number of bits that suffices to hold all values of the type. For a primitive type, this is the minimum number of bits. For an i36 this is 36 bits. For x86 long double it is 80. This corresponds to gcc's TYPE_PRECISION. (2) getTypeStoreSizeInBits - the maximum number of bits that is written when storing the type (or read when reading it). For an i36 this is 40 bits, for an x86 long double it is 80 bits. This is the size alias analysis is interested in (getTypeStoreSize returns the number of bytes). There doesn't seem to be anything corresponding to this in gcc. (3) getABITypeSizeInBits - this is getTypeStoreSizeInBits rounded up to a multiple of the alignment. For an i36 this is 64, for an x86 long double this is 96 or 128 depending on the OS. This is the spacing between consecutive elements when you form an array out of this type (getABITypeSize returns the number of bytes). This is TYPE_SIZE in gcc. Since successive elements in a SequentialType (arrays, pointers and vectors) need to be aligned, the spacing between them will be given by getABITypeSize. This means that the size of an array is the length times the getABITypeSize. It also means that GEP computations need to use getABITypeSize when computing offsets. Furthermore, if an alloca allocates several elements at once then these too need to be aligned, so the size of the alloca has to be the number of elements multiplied by getABITypeSize. Logically speaking this doesn't have to be the case when allocating just one element, but it is simpler to also use getABITypeSize in this case. So alloca's and mallocs should use getABITypeSize. Finally, since gcc's only notion of size is that given by getABITypeSize, if you want to output assembler etc the same as gcc then getABITypeSize is the size you want. Since a store will overwrite no more than getTypeStoreSize bytes, and a read will read no more than that many bytes, this is the notion of size appropriate for alias analysis calculations. In this patch I have corrected all type size uses except some of those in ScalarReplAggregates, lib/Codegen, lib/Target (the hard cases). I will get around to auditing these too at some point, but I could do with some help. Finally, I made one change which I think wise but others might consider pointless and suboptimal: in an unpacked struct the amount of space allocated for a field is now given by the ABI size rather than getTypeStoreSize. I did this because every other place that reserves memory for a type (eg: alloca) now uses getABITypeSize, and I didn't want to make an exception for unpacked structs, i.e. I did it to make things more uniform. This only effects structs containing long doubles and arbitrary precision integers. If someone wants to pack these types more tightly they can always use a packed struct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43620 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-03Use empty() member functions when that's what's being tested for insteadDan Gohman
of comparing begin() and end(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42585 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-23when merging two alias sets together, be sure to propagate the volatility ofChris Lattner
the inner set. This fixes PR1435 and Transforms/LICM/2007-05-22-VolatileSink.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37305 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06Fix typo in comment.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36873 91177308-0d34-0410-b5e6-96231b3b80d8
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
2007-02-05Make 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
2006-12-07Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, areBill Wendling
now cerr, cout, and NullStream resp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32298 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-28Removed some of the iostream #includes. Moved towards converting to usingBill Wendling
llvm streams git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31983 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-17Explain change with a comment.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30443 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-17Fix PR912. The input to erase() must not be a reference to the dataNick Lewycky
being erased. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30442 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
2006-06-27Handle alias sets that have been unified, and thus can have other referencesChris Lattner
to them. This fixes a regression in my previous checkin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28951 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-27Don't implement AliasSetTracker::remove in terms of deleteValue. deleteValueChris Lattner
causes the pointer to be removed from the underlying alias analysis implementation as well. This impl of remove is also significantly faster than the old one. This fixes: Regression/Transforms/DeadStoreElimination/2006-06-27-AST-Remove.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28950 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-26Fix a stale pointer issue that caused 300.twolf to fail to build on zionChris Lattner
last night. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28916 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-03Make the -print-alias-sets pass work for printing out something other thanChris Lattner
the default aa impl results. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25062 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
2005-03-25Treat free operations as volatile, since they cannot be moved. This fixesChris Lattner
Transforms/LICM/2005-03-24-LICM-Aggregate-Crash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20830 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-17Fix the missing symbols problem Bill was hitting. Patch contributed byChris Lattner
Bill Wendling!! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20649 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-15Adjust to new alias analysis interfacesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18957 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-07For PR387:\Reid Spencer
Make only one print method to avoid overloaded virtual warnings when \ compiled with -Woverloaded-virtual git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18589 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-27When merging to alias sets, if they are both must alias, the result is notChris Lattner
a must alias set unless all of the pointers in the resultant set are must aliased together. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18275 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-26Add a new interfaceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18266 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-05Remove dead varChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17485 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-15Add some assertionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16366 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-14Implement an AliasSetTracker::copyValue methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16344 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
2004-07-27Remove a bogus assertionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15261 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-27Use context-sensitive alias analysis to avoid pessimization in clients ofChris Lattner
AliasSetTracker (dse and licm). This implements DeadStoreElimination/context-sensitive.llx git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15254 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-26Add some new methodsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15230 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-25Fix a latent bug in the AliasSetTracker that was exposed by the FreeInst ↵Chris Lattner
additions and broke a bunch of programs last night. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15214 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-25Add support for free instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15197 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22Clean up reference counting to stop "leaking" alias setsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15099 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21Add capability to remove aliasing aliassets from an ASTChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15066 91177308-0d34-0410-b5e6-96231b3b80d8
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