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2010-11-10Factor out the code for testing whether a function accessesDan Gohman
arbitrary memory into a helper function, and adjust some comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-10When checking that the necessary bits are zero inDale Johannesen
order to reduce ((x<<30)>>24) to x<<6, check the correct bits. PR 8547. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-10Make ModRefBehavior a lattice. Use this to clean up AliasAnalysisDan Gohman
chaining and simplify FunctionAttrs' GetModRefBehavior logic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118660 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-09Teach FunctionAttrs about the VAArg instruction.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118627 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-09Use the AliasAnalysis interface to determine how a Function accessesDan Gohman
memory. This isn't a real improvement with present day AliasAnalysis implementations; it's mainly for consistency. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118624 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-09Teach LICM and AliasSetTracker about AccessesArgumentsReadonly.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118618 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-09Teach FunctionAttrs about AccessesArgumentsReadonly.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118617 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08Fix a thinko that Duncan spotted.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118430 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08Make FunctionAttrs TBAA-aware.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118417 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08Extend the AliasAnalysis::pointsToConstantMemory interface to allow itDan Gohman
to optionally look for constant or local (alloca) memory. Teach BasicAliasAnalysis::pointsToConstantMemory to look through Select and Phi nodes, and to support looking for local memory. Remove FunctionAttrs' PointsToLocalOrConstantMemory function, now that AliasAnalysis knows all the tricks that it knew. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118412 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08Make FunctionAttrs use AliasAnalysis::getModRefBehavior, now that itDan Gohman
knows about intrinsic functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-03Rename PointsToLocalMemory to PointsToLocalOrConstantMemory to makeDuncan Sands
the code more self-documenting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118171 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-02Let the -inline-threshold command line argument take precedence over theJakob Stoklund Olesen
threshold given to createFunctionInliningPass(). Both opt -O3 and clang would silently ignore the -inline-threshold option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118117 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-01When folding away a (shl (shr)) pair, we need to check that the bits that ↵Owen Anderson
will BECOME the low bits are zero, not that the current low bits are zero. Fixes <rdar://problem/8606771>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117953 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-30Now that the MallocInst no longer exists, this workaround forDuncan Sands
it claiming not to have side-effects is no longer needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117789 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-30If a function does a volatile load from a global constant, do notDuncan Sands
consider it to be readonly. In fact, don't even consider it to be readonly if it does a volatile load from an AllocaInst either (it is debatable as to whether readonly would be correct or not in this case; play safe for the moment). This fixes PR8279. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117783 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Clean up indentation and other whitespace.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117728 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Remove trailing whitespace.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117727 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Fix 80-column violation.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Change instcombine's getShuffleMask to represent undef with negative values.Bob Wilson
This code had previously used 2*N, where N is the mask length, to represent undef. That is not safe because the shufflevector operands may have more than N elements -- they don't have to match the result type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Make instcombine a little more aggressive in combining vector shuffles.Bob Wilson
Allow splats even if they don't match either of the original shuffles, possibly due to undef entries in the shuffles masks. Radar 8597790. Also fix some 80-column violations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117719 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Give up on doing in-line instruction simplification during correlated value ↵Owen Anderson
propagation. Instruction simplification needs to be guaranteed never to be run on an unreachable block. However, earlier block simplifications may have changed the CFG to make block that were reachable when we began our iteration unreachable by the time we try to simplify them. (Note that this also means that our depth-first iterators were potentially being invalidated). This should not have a large impact on code quality, since later runs of instcombine should pick up these simplifications. Fixes PR8506. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117709 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Inline asm multiple alternative constraints development phase 2 - improved ↵John Thompson
basic logic, added initial platform support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117667 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-27Teach InstCombine not to use Add and Neg on FP. PR 8490.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117510 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25Fix a case where instcombine was stripping metadata (and alignment)Dan Gohman
from stores when folding in bitcasts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117265 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-24Fix PR8445: a block with no predecessors may be the entry block, in which caseDuncan Sands
it isn't unreachable and should not be zapped. The check for the entry block was missing in one case: a block containing a unwind instruction. While there, do some small cleanups: "M" is not a great name for a Function* (it would be more appropriate for a Module*), change it to "Fn"; use Fn in more places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117224 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23SmallVectorize.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117213 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23Switch attribute macros to use 'LLVM_' as a prefix. We retain the old namesChandler Carruth
until other LLVM projects using these are cleaned up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117200 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22Teach instcombine to set the alignment arguments for NEON load/store intrinsics.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117154 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-21RetOp is not actually used for anything useful (thoughDuncan Sands
it looks like maybe it was supposed to be used in the test...), so zap it (gcc-4.6 warning). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117023 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Reapply r116831 and r116839, converting AliasAnalysis to useDan Gohman
uint64_t, plus fixes for places I missed before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Revert r116831 and r116839, which are breaking selfhost builds.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116858 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Passes do not need to recursively initialize passes that they preserve, ifOwen Anderson
they do not also require them. This allows us to reduce inter-pass linkage dependencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116854 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Oops, check in all the files for converting AliasAnalysis toDan Gohman
use uint64_t. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Get rid of static constructors for pass registration. Instead, every pass ↵Owen Anderson
exposes an initializeMyPassFunction(), which must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116820 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116815 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19GlobalOpt: EvaluateFunction() must not evaluate stores to weak_odr globals.Mikhail Glushenkov
Fixes PR8389. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116812 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Trailing whitespace.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116749 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Make AliasSetTracker TBAA-aware, enabling TBAA-enabled LICM.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Transfer debug loc to lowered call.Devang Patel
Patch by Alexander Herz! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116733 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-16Eliminate some calls to Value::getNameStr.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116670 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-15Generalize MemCpyOpt's handling of call slot forwarding to function properly ↵Owen Anderson
when the call slot forwarding is implemented with a load/store pair rather than a memcpy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-13CallGraphSCC passes implicity require CallGraph analysis.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116443 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-13Fix PR8313 by changing ValueToValueMap use a TrackingVH.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116390 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-13Be more consistent in using ValueToValueMapTy.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116387 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-12Begin adding static dependence information to passes, which will allow us toOwen Anderson
perform initialization without static constructors AND without explicit initialization by the client. For the moment, passes are required to initialize both their (potential) dependencies and any passes they preserve. I hope to be able to relax the latter requirement in the future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116334 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09Now using a variant of the existing inlining heuristics to decide whether to ↵Kenneth Uildriks
create a given specialization of a function in PartialSpecialization. If the total performance bonus across all callsites passing the same constant exceeds the specialization cost, we create the specialization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116158 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-08Filter out illegal formulae after updating offsets, not before, so thatDan Gohman
formulae which become illegal as a result of the offset updating don't escape. This is for rdar://8529692. No testcase yet, because the given cases hit use-list ordering differences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-08Update CMake.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116034 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-07Delete the FormulaSorter class and inline its one method into itsDan Gohman
one user. This code will be restructured soon and FormulaSorter is getting in the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116012 91177308-0d34-0410-b5e6-96231b3b80d8
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