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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
2009-08-13Change MCSectionELF to represent a section semantically instead ofBruno Cardoso Lopes
syntactically as a string, very similiar to what Chris did with MachO. The parsing support and validation is not introduced yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78890 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Various AsmWriter output cleanups. Use WriteAsOperand instead ofDan Gohman
PrintUnmangledNameSafely. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78878 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Fix counting of Post-RA scheduling stalls. Improve debug output.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78843 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Added RegisterCoalescer to required passes for PBQP.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78840 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Use WriteAsOperand to print BasicBlock names.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78838 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Fix a few more places to use PadToColumn instead of tabs. And fixDan Gohman
the basic block label printing to check whether a block has a name before printing a comment character and whitespace for it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78830 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Use PadToColumn instead of tabs for aligning comments. Fix one placeDan Gohman
that emitted unnecessary whitespace outside of VerboseAsm mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78828 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Enhance the InstrStage object to enable the specification of an Itinerary ↵David Goodwin
with overlapping stages. The default is to maintain the current behavior that the "next" stage immediately follows the previous one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78827 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Add catch block handling to SjLj exception handling.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78817 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Change TargetAsmInfo to be constructed via TargetRegistry from a Target+TripleChris Lattner
pair instead of from a virtual method on TargetMachine. This cuts the final ties of TargetAsmInfo to TargetMachine, meaning that MC can now use TargetAsmInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78802 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12This logic was accidentally inverted in r78767.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78773 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12Factor out the code for finding an available register for useDan Gohman
in breaking an anti-dependence into a separate function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78767 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
2009-08-11Change the asmprinter to print the comment character before theChris Lattner
"inlineasmstart/end" strings so that the contents of the directive are separate from the comment character. This lets elf targets get #APP/#NOAPP for free even if they don't use "#" as the comment character. This also allows hoisting the darwin stuff up to the shared TAI class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Allow a zero cycle stage to reserve/require a FU without advancing the cycle ↵David Goodwin
counter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78736 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
2009-08-11Split 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
2009-08-11"TAI::JumpTableDirective" is always null for current arm targets, simplifyChris Lattner
the code based on this and make it fall through better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78708 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Use DEBUG macro for debug output.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78694 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Add some debug output.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78687 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Tidy #includes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78677 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Remove unnecessary throw() specifications; LLVM doesn't use exceptions.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78667 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Remove unnecessary casts.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78664 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Add const qualifiers.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78663 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
2009-08-11Fix a -Asserts warning.Daniel Dunbar
- Since the function is never called in NDEBUG mode, just dropped the DEBUG() uses here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78649 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Replace DOUT.David Goodwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78634 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
2009-08-10Fix a bug in the DAGCombiner's handling of multiple linkedDan Gohman
MERGE_VALUES nodes. Replacing the result values with the operands in one MERGE_VALUES node may cause another MERGE_VALUES node be CSE'd with the first one, and bring its uses along, so that the first one isn't dead, as this code expects. Fix this by iterating until the node is really dead. This fixes PR4699. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78619 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Fix a bug where DAGCombine was producing an illegal ConstantFPDan Gohman
node after legalize, and remove the workaround code from the ARM backend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78615 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
2009-08-10Remove a bunch of debugging code that was slowing PBQP down by 25% or so.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78601 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Start moving TargetLowering away from using full MVTs and towards ↵Owen Anderson
SimpleValueType, which will simplify the privatization of IntegerType in the future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78584 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Make this comment more closely reflect the code.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78569 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
2009-08-10Move ConstantExpr handling to ResolveConstantExpr method and alsoBruno Cardoso Lopes
add support for PtrToInt, Add, Mul. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78552 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08sink the 'name' and 'isdirective' state out of MCSection into its derived ↵Chris Lattner
classes. This totally optimizes PIC16 sections by not having an 'isdirective' bit anymore!! ;-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78517 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-081. Make MCSection an abstract class.Chris Lattner
2. Move section switch printing to MCSection virtual method which takes a TAI. This eliminates textual formatting stuff from TLOF. 3. Eliminate SwitchToSectionDirective, getSectionFlagsAsString, and TLOFELF::AtIsCommentChar. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08eliminate TargetLoweringObjectFileSparc in favor of a TAI hook.Chris Lattner
A TAI hook is appropriate in this case because this is just an asm syntax issue, not a semantic difference. TLOF should model the semantics of the section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78498 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08Don't build illegal ops in DAGCombiner::SimplifyBinOpWithSameOpcodeHands().Jakob Stoklund Olesen
Blackfin supports and/or/xor on i32 but not on i16. Teach DAGCombiner::SimplifyBinOpWithSameOpcodeHands to not produce illegal nodes after legalize ops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78497 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
2009-08-08Clean out per-function data after the machine code verifier is done with it.Jakob Stoklund Olesen
Also don't dereference old pointers after they have been deleted causing random crashes when enabling the machine code verifier. Ahem... I have not included a test case for the crash. It hapened when enabling the verifier on CodeGen/X86/2009-08-06-branchfolder-crash.ll. The crash depends on an MBB being allocated at the same address as a previously deleted MBB. I don't think that can be reproduced reliably. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78472 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08Update the machine code verifier to keep up with the scavenger.Jakob Stoklund Olesen
* Cleaner handling of <undef>. * <def> takes precedence over <def,dead>. * Implement the OK-to-redefine-a-register-that-was- live-in-but-has-not-been-used-before rule. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78467 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
2009-08-08Fix some -Asserts unused variable warnings.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78447 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07code cleanupChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78432 91177308-0d34-0410-b5e6-96231b3b80d8
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