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2009-12-17Sundry dependent-name fixes flagged by clang++.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91636 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-17Introduce EVT::getHalfSizedIntegerVT() for use in ExpandUnalignedStore() inKen Dyck
LegalizeDAG.cpp. Unlike the code it replaces, which simply decrements the simple type by one, getHalfSizedIntegerVT() searches for the smallest simple integer type that is at least half the size of the type it is called on. This approach has the advantage that it will continue working if a new value type (such as i24) is added to MVT. Also, in preparation for new value types, remove the assertions that non-power-of-2 8-bit-mutiple types are Extended when legalizing extload and truncstore operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91614 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-17BIT_CONVERT nodes are used for vector types, too.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91582 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Reapply r91392, it was only unmasking the bug, and since TOT is still broken ↵Daniel Dunbar
having it reverted does no good. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91560 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Revert "Initial work on disabling the scheduler. This is a work in progress, andDaniel Dunbar
this", this broke llvm-gcc bootstrap for release builds on x86_64-apple-darwin10. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91533 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Change indirect-globals to use a dedicated allocIndirectGV. This lets usJeffrey Yasskin
remove start/finishGVStub and the BufferState helper class from the MachineCodeEmitter interface. It has the side-effect of not setting the indirect global writable and then executable on ARM, but that shouldn't be necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91464 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Lang verified that SlotIndex is "pod like" even though it isn't a pod.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91423 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Remove isPod() from DenseMapInfo, splitting it out to its ownChris Lattner
isPodLike type trait. This is a generally useful type trait for more than just DenseMap, and we really care about whether something acts like a pod, not whether it really is a pod. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91421 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Initial work on disabling the scheduler. This is a work in progress, and thisBill Wendling
stuff isn't used just yet. We want to model the GCC `-fno-schedule-insns' and `-fno-schedule-insns2' flags. The hypothesis is that the people who use these flags know what they are doing, and have hand-optimized the C code to reduce latencies and other conflicts. The idea behind our scheme to turn off scheduling is to create a map "on the side" during DAG generation. It will order the nodes by how they appeared in the code. This map is then used during scheduling to get the ordering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91392 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Revert these. They may have been causing 483_xalancbmk to fail:Bill Wendling
$ svn merge -c -91161 https://llvm.org/svn/llvm-project/llvm/trunk --- Reverse-merging r91161 into '.': U lib/CodeGen/BranchFolding.cpp U lib/CodeGen/MachineBasicBlock.cpp $ svn merge -c -91113 https://llvm.org/svn/llvm-project/llvm/trunk --- Reverse-merging r91113 into '.': G lib/CodeGen/MachineBasicBlock.cpp $ svn merge -c -91101 https://llvm.org/svn/llvm-project/llvm/trunk --- Reverse-merging r91101 into '.': U include/llvm/CodeGen/MachineBasicBlock.h G lib/CodeGen/MachineBasicBlock.cpp $ svn merge -c -91092 https://llvm.org/svn/llvm-project/llvm/trunk --- Reverse-merging r91092 into '.': G include/llvm/CodeGen/MachineBasicBlock.h G lib/CodeGen/MachineBasicBlock.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91376 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14Move Flag and isVoid after the vector types, since bit arithmetic withDan Gohman
those enum values is less common. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91361 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14Update this comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91356 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14Moved spill weight calculation out of SimpleRegisterCoalescing and into its ↵Lang Hames
own pass: CalculateSpillWeights. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91273 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-13Fix weird typo which leads to unallocated memory access for nodes with 4 ↵Anton Korobeynikov
results. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91233 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11Implement vector widening, splitting, and scalarizing for SIGN_EXTEND_INREG.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91158 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11Address comments on last patch:Bill Wendling
- Loosen the restrictions when checking of it branches to a landing pad. - Make the loop more efficient by checking the '.insert' return value. - Do cheaper checks first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91101 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11A machine basic block may end in an unconditional branch, however it may haveBill Wendling
more than one successor. Normally, these extra successors are dead. However, some of them may branch to exception handling landing pads. If we remove those successors, then the landing pads could go away if all predecessors to it are removed. Before, it was checking if the direct successor was the landing pad. But it could be the result of jumping through multiple basic blocks to get to it. If we were to only check for the existence of an EH_LABEL in the basic block and not remove successors if it's in there, then it could stop actually dead basic blocks from being removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Remove a broken, unused headerDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91058 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Also attempt trivial coalescing for live intervals that end in a copy.Jakob Stoklund Olesen
The coalescer is supposed to clean these up, but when setting up parameters for a function call, there may be copies to physregs. If the defining instruction has been LICM'ed far away, the coalescer won't touch it. The register allocation hint does not always work - when the register allocator is backtracking, it clears the hints. This patch is more conservative than r90502, and does not break 483.xalancbmk/i686. It still breaks the PowerPC bootstrap, so it is disabled by default, and can be enabled with the -trivial-coalesce-ends option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91049 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Added a new "splitting" spiller.Lang Hames
When a call is placed to spill an interval this spiller will first try to break the interval up into its component values. Single value intervals and intervals which have already been split (or are the result of previous splits) are spilled by the default spiller. Splitting intervals as described above may improve the performance of generated code in some circumstances. This work is experimental however, and it still miscompiles many benchmarks. It's not recommended for general use yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90951 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Move isConsecutiveLoad to SelectionDAG. It's not target dependent and it's ↵Evan Cheng
primary used by selectdag passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90922 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Add const qualifier.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90918 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Refactor InferAlignment out of DAGCombine.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90917 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07Pre-regalloc tale duplication. Work in progress.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05Remove old DBG_LABEL code.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90669 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05Remove the unused DisableLegalizeTypes option and related code.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90668 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05Temporarily revert r90502. It was causing the llvm-gcc bootstrap on PPC to fail.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90653 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-05Make TargetSelectInstruction protected and called from FastISel.cppDan Gohman
instead of SelectionDAGISel.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90636 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04Add a pre-regalloc tail duplication pass.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90567 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04Also attempt trivial coalescing for live intervals that end in a copy.Jakob Stoklund Olesen
The coalescer is supposed to clean these up, but when setting up parameters for a function call, there may be copies to physregs. If the defining instruction has been LICM'ed far away, the coalescer won't touch it. The register allocation hint does not always work - when the register allocator is backtracking, it clears the hints. This patch takes care of a few more cases that r90163 missed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90502 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03Fill out codegen SSA updater. It's not yet tested.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90395 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03improve portability to avoid conflicting with std::next in c++'0x.Chris Lattner
Patch by Howard Hinnant! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90365 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Skeleton for MachineInstr level SSA updater.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90353 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Factor the stack alignment calculations out into a target independent pass.Jim Grosbach
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01Add edge source labels to SelectionDAG graphs, now that the graph printingDan Gohman
framework omits differentiated edge sources in the case where the labels are empty strings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90254 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01Move PHIElimination::isLiveOut method to LiveVariables.Jakob Stoklund Olesen
We want LiveVariables clients to use methods rather than accessing the getVarInfo data structure directly. That way it will be possible to change the LiveVariables representation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90240 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-01Fix PR5614: parts of a physical register def may be killed the rest.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90180 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-30Added support to allow clients to custom widen. For X86, custom widen ↵Mon P Wang
vectors for divide/remainder since these operations can trap by unroll them and adding undefs for the resulting vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90108 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-26Rename new TailDuplicationPass to avoid name conflict with the old one.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89968 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-26Split tail duplication into a separate pass. This is needed to avoidBob Wilson
running tail duplication when doing branch folding for if-conversion, and we also want to be able to run tail duplication earlier to fix some reg alloc problems. Move the CanFallThrough function from BranchFolding to MachineBasicBlock so that it can be shared by TailDuplication. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89904 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24Use StringRef instead of std::string in DIEString.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89793 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-24Remove DebugLabelFolder pass. It is not used by dwarf writer anymore.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89790 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23Remove ISD::DEBUG_LOC and ISD::DBG_LABEL, which are no longer used.Dan Gohman
Note that "hasDotLocAndDotFile"-style debug info was already broken; people wanting this functionality should implement it in the AsmPrinter/DwarfWriter code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89711 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23Allow more than one stub to be being generated at the same time.Jeffrey Yasskin
It's probably better in the long run to replace the indirect-GlobalVariable system. That'll be done after a subsequent patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89708 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23Rename SelectionDAGLowering to SelectionDAGBuilder, and renameDan Gohman
SelectionDAGBuild.cpp to SelectionDAGBuilder.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89681 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21We are not using DBG_STOPPOINT anymore.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89536 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-21Be more clever about calculating live variables through new basic blocks.Jakob Stoklund Olesen
When splitting a critical edge, the registers live through the edge are: - Used in a PHI instruction, or - Live out from the predecessor, and - Live in to the successor. This allows the coalescer to eliminate even more phi joins. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89530 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20Target-independent support for TargetFlags on BlockAddress operands,Dan Gohman
and support for blockaddresses in x86-32 PIC mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89506 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20Remove some old experimental code that is no longer needed. Remove ↵David Goodwin
additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89471 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-20Fix fast-isel to avoid selecting the return instruction if aDan Gohman
tail call has been encountered. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89444 91177308-0d34-0410-b5e6-96231b3b80d8
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