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2009-08-14Add virtual printMCInst method to AsmPrinter, as a quick way to expose the APIDaniel Dunbar
to print one instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78985 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Add MachineFrameInfo::getPristineRegisters(MBB) method.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78911 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Add callback to allow target to adjust latency of schedule dependency edge.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78910 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Add contexts to some of the MVT APIs. No functionality change yet, just the ↵Owen Anderson
infrastructure work needed to get the contexts to where they need to be first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Fix warnings.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78725 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11struct -> classOwen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78715 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Split EVT into MVT and EVT, the former representing _just_ a primitive type, ↵Owen Anderson
while the latter is capable of representing either a primitive or an extended type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78713 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Make LLVMContext and LLVMContextImpl classes instead of structs.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78690 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Use the default copy-ctor, copy-assignment, and destructor.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Add a comment about the additional meaning of setPreservesCFG() forDan Gohman
MachineFunctionPass passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78669 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Rebuild RegScavenger::DistanceMap each time it is needed.Jakob Stoklund Olesen
The register scavenger maintains a DistanceMap that maps MI pointers to their distance from the top of the current MBB. The DistanceMap is built incrementally in forward() and in bulk in findFirstUse(). It is used by scavengeRegister() to determine which candidate register has the longest unused interval. Unfortunately the DistanceMap contents can become outdated. The first time scavengeRegister() is called, the DistanceMap is filled to cover the MBB. If then instructions are inserted in the MBB (as they always are following scavengeRegister()), the recorded distances are too short. This causes bad behaviour in the included test case where a register use /after/ the current position is ignored because findFirstUse() thinks is is /before/ the current position. A "using an undefined register" assertion follows promptly. The fix is to build a fresh DistanceMap at the top of scavengeRegister(), and discard it after use. This means that DistanceMap is no longer needed as a RegScavenger member variable, and forward() doesn't need to update it. The fix then discloses issue number two in the same test case: The candidate search in scavengeRegister() finds a CSR that has been saved in the prologue, but is currently unused. It would be both inefficient and wrong to spill such a register in the emergency spill slot. In the present case, the emergency slot restore is placed immediately before the normal epilogue restore, leading to a "Redefining a live register" assertion. Fix number two: When scavengerRegister() stumbles upon an unused register that is overwritten later in the MBB, return that register early. It is important to verify that the register is defined later in the MBB, otherwise it might be an unspilled CSR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78650 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Add a new overloaded EVT::vAny type for use in TableGen to allow intrinsicBob Wilson
arguments that are vectors of any size and element type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78631 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11SjLj based exception handling unwinding support. This patch is nasty, brutishJim Grosbach
and short. Well, it's kinda short. Definitely nasty and brutish. The front-end generates the register/unregister calls into the SjLj runtime, call-site indices and landing pad dispatch. The back end fills in the LSDA with the call-site information provided by the front end. Catch blocks are not yet implemented. Built on Darwin and verified no llvm-core "make check" regressions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Modified VNInfo. The "copy" member is now a union which holds the copy for a ↵Lang Hames
register interval, or the defining register for a stack interval. Access is via getCopy/setCopy and getReg/setReg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78620 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Rename MVT to EVT, in preparation for splitting SimpleValueType out into its ↵Owen Anderson
own struct type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78610 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Add support for printing loop structure information in asm comments.David Greene
This definitely slows down asm output so put it under an -asm-exuberant flag. This information is useful when doing static analysis of performance issues. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78567 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Post RA scheduler changes. Introduce a hazard recognizer that uses the ↵David Goodwin
target schedule information to accurately model the pipeline. Update the scheduler to correctly handle multi-issue targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78563 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08ELF improvements:Bruno Cardoso Lopes
Handle large integers, x86_fp80, ConstantAggregateZero, and two more ConstantExpr: GetElementPtr and IntToPtr Set SHF_MERGE bit for mergeable strings Avoid zero initialized strings to be classified as a bss symbol Don't allow common symbols to be classified as STB_WEAK Add a constant to be used as a global value offset in data relocations git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78476 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08Remove RegisterScavenger::isSuperRegUsed(). This completely reverses the ↵Jakob Stoklund Olesen
mistaken commit r77904. Now there is no special treatment of instructions that redefine part of a super-register. Instead, the super-register is marked with <imp-use,kill> and <imp-def>. For instance, from LowerSubregs on ARM: subreg: CONVERTING: %Q1<def> = INSERT_SUBREG %Q1<undef>, %D1<kill>, 5 subreg: %D2<def> = FCPYD %D1<kill>, 14, %reg0, %Q1<imp-def> subreg: CONVERTING: %Q1<def> = INSERT_SUBREG %Q1, %D0<kill>, 6 subreg: %D3<def> = FCPYD %D0<kill>, 14, %reg0, %Q1<imp-use,kill>, %Q1<imp-def> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78466 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08Simplify RegScavenger::forward a bit more.Jakob Stoklund Olesen
Verify that early clobber registers and their aliases are not used. All changes to RegsAvailable are now done as a transaction so the order of operands makes no difference. The included test case is from PR4686. It has behaviour that was dependent on the order of operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78465 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07remove a bunch of now-dead crud from the asmprinter and TAI interfaces.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Get rid of RegScavenger::backwards() before the bitrot spreads.Jakob Stoklund Olesen
If we need it one day, there is nothing wrong with putting it back in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78337 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Reg Scavenging generalization (Thumb support):John Mosby
- start support for new PEI w/reg alloc, allow running RS from emit{Pro,Epi}logue() target hooks. - fix minor issue with recursion detection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78318 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Fix some column padding bugs, reorganize things as suggested by ChrisDavid Greene
and eliminate complexity. Yay! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78243 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Major calling convention code refactoring.Dan Gohman
Instead of awkwardly encoding calling-convention information with ISD::CALL, ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering provides three virtual functions for targets to override: LowerFormalArguments, LowerCall, and LowerRet, which replace the custom lowering done on the special nodes. They provide the same information, but in a more immediately usable format. This also reworks much of the target-independent tail call logic. The decision of whether or not to perform a tail call is now cleanly split between target-independent portions, and the target dependent portion in IsEligibleForTailCallOptimization. This also synchronizes all in-tree targets, to help enable future refactoring and feature work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78142 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-051) Proper emit displacements for x86, using absolute relocations where necessaryBruno Cardoso Lopes
for ELF to work. 2) RIP addressing: Use SIB bytes for absolute relocations where RegBase=0, IndexReg=0. 3) The JIT can get the real address of cstpools and jmptables during code emission, fix that for object code emission git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78129 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Factor some of the constants+context related code out into a separate ↵Owen Anderson
header, to make LLVMContextImpl.h not hideous. Also, fix some MSVC compile errors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78115 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03eliminate CurrentSection, rename CurrentSection_ -> CurrentSection, make it ↵Chris Lattner
private, eliminate IsInTextSection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Kill off SwitchToDataSection and SwitchToTextSection, woo.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78015 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Re-apply LiveInterval index dumping patch, with fixes suggested by BillDavid Greene
and others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78003 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03make getObjFileLowering() return a non-const reference.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77984 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Add 'Indirect' LocInfo class and use to pass __m128 on win64. Also minore ↵Anton Korobeynikov
fixes here and there (mostly __m64). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77964 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Fix some comments referring to std::cerr.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77931 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02Scavenger asserts.Jakob Stoklund Olesen
Allow imp-def and imp-use of anything in the scavenger asserts, just like the machine code verifier. Allow redefinition of a sub-register of a live register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77904 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-01Give MachineFunctionAnalysis a destructor so it can verify thatDan Gohman
that it released its allocated memory. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77775 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Simplify operand padding by keying off tabs in the asm stream. IfDavid Greene
padding is disabled, tabs get replaced by spaces except in the case of the first operand, where the tab is output to line up the operands after the mnemonics. Add some better comments and eliminate redundant code. Fix some testcases to not assume tabs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77740 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Delete spurious semicolons.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77712 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31switch off of 'Section' onto MCSection. We're not properly usingChris Lattner
MCSection subclasses yet, but this is a step in the right direction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77708 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31MachineFunction no longer needs Annotation.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77704 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Reapply r77654 with a fix: MachineFunctionPass's getAnalysisUsageDan Gohman
shouldn't do AU.setPreservesCFG(), because even though CodeGen passes don't modify the LLVM IR CFG, they may modify the MachineFunction CFG, and passes like MachineLoop are registered with isCFGOnly set to true. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77691 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Revert r77654, it appears to be causing llvm-gcc bootstrap failures, and manyDaniel Dunbar
failures when building assorted projects with clang. --- Reverse-merging r77654 into '.': U include/llvm/CodeGen/Passes.h U include/llvm/CodeGen/MachineFunctionPass.h U include/llvm/CodeGen/MachineFunction.h U include/llvm/CodeGen/LazyLiveness.h U include/llvm/CodeGen/SelectionDAGISel.h D include/llvm/CodeGen/MachineFunctionAnalysis.h U include/llvm/Function.h U lib/Target/CellSPU/SPUISelDAGToDAG.cpp U lib/Target/PowerPC/PPCISelDAGToDAG.cpp U lib/CodeGen/LLVMTargetMachine.cpp U lib/CodeGen/MachineVerifier.cpp U lib/CodeGen/MachineFunction.cpp U lib/CodeGen/PrologEpilogInserter.cpp U lib/CodeGen/MachineLoopInfo.cpp U lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp D lib/CodeGen/MachineFunctionAnalysis.cpp D lib/CodeGen/MachineFunctionPass.cpp U lib/CodeGen/LiveVariables.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77661 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Manage MachineFunctions with an analysis Pass instead of the AnnotableDan Gohman
mechanism. To support this, make MachineFunctionPass a little more complete. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77654 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30Removed the BigBlock register allocator.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77640 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30Allow targets to define libcall names for mem(cpy,set,move) intrinsics, ↵Sanjiv Gupta
rather than hardcoding them in DAG lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77586 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30I've changed the semantics of MERGE_VALUES a bit. It's now allowed to live ↵Evan Cheng
until scheduling. It's deleted when the scheduler translate DAG nodes to machine instructions. This is currently used by X86 to handle atomic_load_add when the output of the node is not used. I believe there is a better solution. But I find MERGE_VALUES useful for selecting multi-output node when the dead output can be selected as a IMPLICIT_DEF. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77583 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Move types back to the 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77516 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Rip all of the global variable lowering logic out of TargetAsmInfo. SinceChris Lattner
it is highly specific to the object file that will be generated in the end, this introduces a new TargetLoweringObjectFile interface that is implemented for each of ELF/MachO/COFF/Alpha/PIC16 and XCore. Though still is still a brutal and ugly refactoring, this is a major step towards goodness. This patch also: 1. fixes a bunch of dangling pointer problems in the PIC16 backend. 2. disables the TargetLowering copy ctor which PIC16 was accidentally using. 3. gets us closer to xcore having its own crazy target section flags and pic16 not having to shadow sections with its own objects. 4. fixes wierdness where ELF targets would set CStringSection but not CStringSection_. Factor the code better. 5. fixes some bugs in string lowering on ELF targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77294 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27hoist MCContext/MCStreamer up to AsmPrinter since we're going to start creatingChris Lattner
MCSections soon instead of Section for all targets, and we need something to own them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77252 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27simplify #includes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77250 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Move more to raw_ostream, provide support for writing MachineBasicBlock,Daniel Dunbar
LiveInterval, etc to raw_ostream. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76965 91177308-0d34-0410-b5e6-96231b3b80d8
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