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2012-03-16ScheduleDAGInstrs: When adding uses we add them into a set that's empty at ↵Benjamin Kramer
the beginning, no need to maintain another set for the added regs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152934 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-16Limit the number of memory operands in MachineInstr to 2^16 and store the ↵Benjamin Kramer
number in padding. Saves one machine word on MachineInstr (88->80 bytes on x86_64, 48->44 on i386). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152930 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-16CriticalAntiDepBreaker: BasicBlock::size is an expensive operation, reuse ↵Benjamin Kramer
the cached value. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152927 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-16misched: add DAG edges from vreg defs to ExitSU.Andrew Trick
These edges are not really necessary, but it is consistent with the way we currently create physreg edges. Scheduler heuristics that expect a DAG edge to the block terminator could benefit from this change. Although in the future I hope we have a better mechanism for modeling latency across scheduling regions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152895 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-16Revert r152705, which reapplied r152486 as this appears to be causing failuresChad Rosier
on our internal nightly testers. So, basically revert r152486 again. Abbreviated original commit message: Implement a more intelligent way of spilling uses across an invoke boundary. It looks as if Chander's inlining work, r152737, exposed an issue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152887 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-16Revert r152613 (and r152614), "Inline the d'tor and add an anchor instead." ↵NAKAMURA Takumi
for workaround of g++-4.4's miscompilation. It caused MSP430DAGToDAGISel::SelectIndexedBinOp() to be miscompiled. When two ReplaceUses()'s are expanded as inline, vtable in base class is stored to latter (ISelUpdater)ISU. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152877 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15For types with a parent of the compile unit make sure and emitEric Christopher
the DECL information. rdar://10855921 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152876 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15We actually handle AllocaInst via getRegForValue below just fine.Eric Christopher
Part of rdar://8905263 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152845 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Add some debugging output into fast isel as well.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152844 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Add another debug statement.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152843 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Tabs.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152842 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Typo.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152841 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15When optimizing certain BUILD_VECTOR nodes into other BUILD_VECTOR nodes, ↵Nadav Rotem
add the new node into the work list because there is a potential for further optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152784 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Revert the removal of DW_AT_MIPS_linkage_name when we aren't puttingEric Christopher
out the DW_AT_name. Older gdbs unfortunately still use it to disambiguate member functions in templated classes (gdb.cp/templates.exp). rdar://11043421 (which is now deferred for a bit) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152782 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15Add a xform to the DAG combiner.Bill Wendling
Transform: (fsub x, (fadd x, y)) -> (fneg y) and (fsub x, (fadd y, x)) -> (fneg y) if 'unsafe math' is specified. <rdar://problem/7540295> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152777 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14Silence operator precedence warnings.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152711 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14Reapply r152486 with a fix for the nightly testers.Bill Wendling
There were cases where a value could be used and it's both crossing an invoke and NOT crossing an invoke. This could happen in the landing pads. In that case, we will demote the value to the stack like we did before. <rdar://problem/10609139> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152705 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14Insert the debugging instructions in one fell-swoop so that it doesn't call theBill Wendling
expensive "getFirstTerminator" call. This reduces the time of compilation in PR12258 from >10 minutes to < 10 seconds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152704 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14misched: implemented a framework for top-down or bottom-up scheduling.Andrew Trick
New flags: -misched-topdown, -misched-bottomup. They can be used with the default scheduler or with -misched=shuffle. Without either topdown/bottomup flag -misched=shuffle now alternates scheduling direction. LiveIntervals update is unimplemented with bottom-up scheduling, so only -misched-topdown currently works. Capped the ScheduleDAG hierarchy with a concrete ScheduleDAGMI class. ScheduleDAGMI is aware of the top and bottom of the unscheduled zone within the current region. Scheduling policy can be plugged into the ScheduleDAGMI driver by implementing MachineSchedStrategy. ConvergingScheduler is now the default scheduling algorithm. It exercises the new driver but still does no reordering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152700 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14misched commentsAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152699 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-14Remove the DW_AT_MIPS_linkage name attribute when we don't need itEric Christopher
output (we're emitting a specification already and the information isn't changing). Saves 1% on the debug information for a build of llvm. Fixes rdar://11043421 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152697 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Fortify r152675 a bit. Although I'm not able to come up with a test case ↵Evan Cheng
that would trigger the truncation case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152678 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13DAG combine incorrectly optimize (i32 vextract (v4i16 load $addr), c) toEvan Cheng
(i16 load $addr+c*sizeof(i16)) and replace uses of (i32 vextract) with the i16 load. It should issue an extload instead: (i32 extload $addr+c*sizeof(i16)). rdar://11035895 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152675 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13s/SjLjEHPass/SjLjEHPrepare/Bill Wendling
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152658 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Add a return type.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152614 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Inline the d'tor and add an anchor instead.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152613 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Refactor the SelectionDAG's 'dump' methods into their own .cpp file.Bill Wendling
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152611 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Fixed typo in comment.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152610 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-12Revert due to nightly test failures.Bill Wendling
--- Reverse-merging r152486 into '.': U lib/CodeGen/SjLjEHPrepare.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152571 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11DwarfDebug: Store the filename/dirname pair as a zero-separated string in a ↵Benjamin Kramer
stringmap, instead of using a highly inefficient std::map of a pair of std::strings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152541 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11llvm::SwitchInstStepan Dyatkovskiy
Renamed methods caseBegin, caseEnd and caseDefault with case_begin, case_end, and case_default. Added some notes relative to case iterators. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152532 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Microoptimize getVRegDef. def_begin isn't free, don't compute it twice.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152492 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Implement a more intelligent way of spilling uses across an invoke boundary.Bill Wendling
The old way of determine when and where to spill a value that was used inside of a landing pad resulted in spilling that value everywhere and not just at the invoke edge. This algorithm determines which values are used within a landing pad. It then spills those values before the invoke and reloads them before the uses. This should prevent excessive spilling in many cases, e.g. inside of loops. <rdar://problem/10609139> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152486 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Report the defining instruction.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152460 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Add SSA verification to MachineVerifier.Jakob Stoklund Olesen
Somehow we never verified SSA dominance before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152458 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Use SmallPtrSet instead of DenseSet.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152457 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Give dagcombiner's worklist some inline capacity.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152454 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09Assert on SSA errors in LiveVariables.Jakob Stoklund Olesen
All uses of a virtual register must be dominated by its def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152449 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09misched: handle scheduler that insert instructions at empty region boundaries.Andrew Trick
And add comments, since this is obviously confusing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152445 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09misched: handle scheduling region boundaries nicely.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152393 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09misched interface: rename Begin/End to RegionBegin/RegionEnd since they are ↵Andrew Trick
not private. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152382 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09misched commentsAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152374 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09revert 152356: verify misched changes using -misched=shuffle.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152373 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09misched: allow the default scheduler to be one chosen by the target.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152360 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09Cache MBB->begin. It's possible the scheduler / bundler may change MBB->begin().Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152356 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-08Use uint16_t to store instruction implicit uses and defs. Reduces static data.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152301 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-08Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012:Stepan Dyatkovskiy
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120130/136146.html Implemented CaseIterator and it solves almost all described issues: we don't need to mix operand/case/successor indexing anymore. Base iterator class is implemented as a template since it may be initialized either from "const SwitchInst*" or from "SwitchInst*". ConstCaseIt is just a read-only iterator. CaseIt is read-write iterator; it allows to change case successor and case value. Usage of iterator allows totally remove resolveXXXX methods. All indexing convertions done automatically inside the iterator's getters. Main way of iterator usage looks like this: SwitchInst *SI = ... // intialize it somehow for (SwitchInst::CaseIt i = SI->caseBegin(), e = SI->caseEnd(); i != e; ++i) { BasicBlock *BB = i.getCaseSuccessor(); ConstantInt *V = i.getCaseValue(); // Do something. } If you want to convert case number to TerminatorInst successor index, just use getSuccessorIndex iterator's method. If you want initialize iterator from TerminatorInst successor index, use CaseIt::fromSuccessorIndex(...) method. There are also related changes in llvm-clients: klee and clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152297 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-08misched interface: Expose the MachineScheduler pass.Andrew Trick
Allow targets to provide their own schedulers (subclass of ScheduleDAGInstrs) to the misched pass. Select schedulers using -misched=... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152278 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-07Cleanup VLIWPacketizer to use the updated ScheduleDAGInstrs interface.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152262 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-07misched prep: Expose the ScheduleDAGInstrs interface so targets mayAndrew Trick
implement their own MachineScheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152261 91177308-0d34-0410-b5e6-96231b3b80d8
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