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* Clean up normalization of shufflesMon P Wang2008-11-211-30/+31
| | | | llvm-svn: 59792
* Combine the two add with overflow intrinsics lowerings. They differ only in ↵Bill Wendling2008-11-211-18/+5
| | | | | | DAG node type. llvm-svn: 59788
* Set the isAntiDep flag in the MachineInstr scheduler.Dan Gohman2008-11-211-1/+1
| | | | llvm-svn: 59787
* Generate code for llvm.uadd.with.overflow intrinsic. No conversion support yet.Bill Wendling2008-11-211-1/+12
| | | | llvm-svn: 59786
* Add a flag to SDep for tracking which edges are anti-dependence edges.Dan Gohman2008-11-212-8/+8
| | | | llvm-svn: 59785
* Remove chains. Unnecessary.Bill Wendling2008-11-212-14/+8
| | | | llvm-svn: 59783
* Rename SDep's isSpecial to isArtificial, to make this field a littleDan Gohman2008-11-214-43/+43
| | | | | | less mysterious. llvm-svn: 59782
* Rename "ADDO" to "SADDO" and "UADDO". The "UADDO" isn't equivalent to "ADDC"Bill Wendling2008-11-213-7/+14
| | | | | | | because the boolean it returns to indicate an overflow may not be treated like as a flag. It could be stored to memory, for instance. llvm-svn: 59780
* Implement the sadd_with_overflow intrinsic. This is converted intoBill Wendling2008-11-213-2/+56
| | | | | | | | "ISD::ADDO". ISD::ADDO is lowered into a target-independent form that does the addition and then checks if the result is less than one of the operands. (If it is, then there was an overflow.) llvm-svn: 59779
* Use ComputeLatency in the MachineInstr scheduler.Dan Gohman2008-11-212-0/+4
| | | | llvm-svn: 59777
* Remove the CycleBound computation code from the ScheduleDAGRRListDan Gohman2008-11-211-58/+5
| | | | | | | | | | | | | schedulers. This doesn't have much immediate impact because targets that use these schedulers by default don't yet provide pipeline information. This code also didn't have the benefit of register pressure information. Also, removing it will avoid problems with list-burr suddenly starting to do latency-oriented scheduling on x86 when we start providing pipeline data, which would increase spilling. llvm-svn: 59775
* Implement ComputeLatency for MachineInstr ScheduleDAGs. FactorDan Gohman2008-11-212-8/+19
| | | | | | | | some of the latency computation logic out of the SDNode ScheduleDAG code into a TargetInstrItineraries helper method to help with this. llvm-svn: 59761
* Add UADDO and SADDO nodes. These will be used for determining an overflowBill Wendling2008-11-211-0/+2
| | | | | | condition in an addition operation. llvm-svn: 59760
* Change these schedulers to not emit no-ops. It turns out thatDan Gohman2008-11-212-9/+3
| | | | | | | | | the RR scheduler actually does look at latency values, but it doesn't use a hazard recognizer so it has no way to know when a no-op is needed, as opposed to just stalling and incrementing the cycle count. llvm-svn: 59759
* Treat mid-block labels the same as terminators when building theDan Gohman2008-11-201-1/+1
| | | | | | | | | | MachineInstr scheduling DAG, meaning they implicitly depend on all preceding defs. This fixes Benchmarks/Shootout-C++/except and Regression/C++/EH/simple_rethrow in -relocation-model=pic -disable-post-RA-scheduler=false mode. llvm-svn: 59747
* Add another machine-code printing pass when post-pass scheduling is run.Dan Gohman2008-11-201-1/+5
| | | | llvm-svn: 59746
* Add some documentation.Duncan Sands2008-11-201-1/+28
| | | | llvm-svn: 59727
* 80-column violation.Bill Wendling2008-11-201-2/+4
| | | | llvm-svn: 59718
* Remove a remnant of list-burr's fast mode.Dan Gohman2008-11-201-20/+0
| | | | llvm-svn: 59702
* Factor out the SethiUllman numbering logic from the list-burr andDan Gohman2008-11-201-159/+47
| | | | | | list-tdrr schedulers into a common base class. llvm-svn: 59701
* Remove the "fast" form of the list-burr scheduler, and use theDan Gohman2008-11-202-74/+15
| | | | | | | | | dedicated "fast" scheduler in -fast mode instead, which is faster. This speeds up llc -fast by a few percent on some testcases -- the speedup only happens for code not handled by fast-isel. llvm-svn: 59700
* Facter AddPseudoTwoAddrDeps and associated infrasructure out ofDan Gohman2008-11-201-43/+60
| | | | | | | the list-burr scheduler so that it can be used by the list-tdrr scheduler too. llvm-svn: 59698
* - Register scavenger should use MachineRegisterInfo and internal map to find ↵Evan Cheng2008-11-201-32/+62
| | | | | | | | | the first use of a register after a given machine instruction. - When scavenging a register, in addition to the spill, insert a restore before the first use. - Abort if client is looking to scavenge a register even when a previously scavenged register is still live. llvm-svn: 59697
* Add #include <climits> to get the definition of INT_MAX.Dan Gohman2008-11-201-0/+1
| | | | llvm-svn: 59692
* Factor out the code for verifying the work of the scheduler,Dan Gohman2008-11-204-87/+58
| | | | | | | extend it a bit, and make use of it in all schedulers, to ensure consistent checking. llvm-svn: 59689
* Simplify this code a little. In the fast scheduler, CreateNewSUnitDan Gohman2008-11-191-17/+5
| | | | | | and CreateClone don't add any extra value. llvm-svn: 59679
* Experimental post-pass scheduling support. Post-pass schedulingDan Gohman2008-11-1917-824/+1012
| | | | | | | | | | | | | | | | | is currently off by default, and can be enabled with -disable-post-RA-scheduler=false. This doesn't have a significant impact on most code yet because it doesn't yet do anything to address anti-dependencies and it doesn't attempt to disambiguate memory references. Also, several popular targets don't have pipeline descriptions yet. The majority of the changes here are splitting the SelectionDAG-specific code out of ScheduleDAG, so that ScheduleDAG can be moved to libLLVMCodeGen.a. The interface between ScheduleDAG-using code and the rest of the scheduling code is somewhat rough and will evolve. llvm-svn: 59676
* Move the code for printing a graph node label for an SUnit intoDan Gohman2008-11-192-22/+19
| | | | | | a virtual method of SelectionDAG. llvm-svn: 59667
* Convert SUnit's dump method into a print method and implementDan Gohman2008-11-191-6/+10
| | | | | | dump in terms of it. llvm-svn: 59665
* Fix compilation error on MSVC.Argyrios Kyrtzidis2008-11-191-1/+1
| | | | llvm-svn: 59629
* Add support for rematerialization in pre-alloc-splitting.Owen Anderson2008-11-191-3/+95
| | | | llvm-svn: 59587
* Rearrange code to reduce the nesting level. No functionality change.Dan Gohman2008-11-191-36/+36
| | | | llvm-svn: 59580
* Fix debug printing of flagged SDNodes in SUnits so that theyDan Gohman2008-11-191-12/+12
| | | | | | print in the correct order. llvm-svn: 59567
* Make the same change to RegScavenger::backward.Evan Cheng2008-11-181-9/+28
| | | | llvm-svn: 59566
* We also need to keep the operand index for two address check.Evan Cheng2008-11-181-9/+11
| | | | llvm-svn: 59562
* Register scavenger should process early clobber defs first. A dead early ↵Evan Cheng2008-11-181-23/+37
| | | | | | clobber def should not interfere with a normal def which happens one slot later. llvm-svn: 59559
* Tidy up ScheduleNodeBottomUp methods, and make them moreDan Gohman2008-11-182-10/+8
| | | | | | consistent with ScheduleNodeTopDown methods. llvm-svn: 59550
* Update a comment to reflect the current code.Dan Gohman2008-11-181-3/+2
| | | | llvm-svn: 59549
* Remove integer promotion support for FP_EXTENDDuncan Sands2008-11-182-16/+1
| | | | | | | | | and FP_ROUND. Not sure what these were doing here - probably they were sometimes (wrongly) created with integer operands somewhere that has since been fixed. llvm-svn: 59548
* Simplify code using helper routines. There is notDuncan Sands2008-11-182-67/+53
| | | | | | supposed to be any functionality change. llvm-svn: 59545
* Fix a bug introduced by my previous patch. With this change, SPEC is now ↵Owen Anderson2008-11-181-1/+1
| | | | | | clean with prealloc splitting enabled. llvm-svn: 59544
* Add more const qualifiers. This fixes build breakage from r59540.Dan Gohman2008-11-181-1/+1
| | | | llvm-svn: 59542
* Make some methods const.Dan Gohman2008-11-181-2/+4
| | | | llvm-svn: 59540
* Whitespace cleanups.Dan Gohman2008-11-181-2/+2
| | | | llvm-svn: 59532
* LegalizeTypes support for splitting and scalarizingDuncan Sands2008-11-182-11/+27
| | | | | | | | SCALAR_TO_VECTOR. I didn't add the testcase, because once llc gets past scalar-to-vector it hits a SPU target lowering bug and explodes. llvm-svn: 59530
* Rename stackprotector_create intrinsic to stackprotector.Bill Wendling2008-11-182-2/+2
| | | | llvm-svn: 59519
* Reapply r59464, this time using the correct typeDuncan Sands2008-11-182-4/+188
| | | | | | when softening FNEG. llvm-svn: 59513
* Remove the stackprotector_check intrinsic. Use a volatile load instead.Bill Wendling2008-11-182-19/+4
| | | | llvm-svn: 59504
* - Use "moveAfter" instead of "remove/insert" of a basic block.Bill Wendling2008-11-181-103/+104
| | | | | | | | | - Use less indentation in coding. - Shorten description. - Update comments. - Move code around llvm-svn: 59496
* Fix a typo in a comment.Dan Gohman2008-11-181-1/+1
| | | | llvm-svn: 59489
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