aboutsummaryrefslogtreecommitdiff
path: root/lib/CodeGen/RegAllocPBQP.cpp
AgeCommit message (Collapse)Author
2010-08-06Reapply r110396, with fixes to appease the Linux buildbot gods.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Revert r110396 to fix buildbots.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Don't use PassInfo* as a type identifier for passes. Instead, use the ↵Owen Anderson
address of the static ID member as the sole unique type identifier. Clean up APIs related to this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Switched to rendering after allocation (but before rewriting) in PBQP.Lang Hames
Updated renderer to use allocation information from VirtRegMap (if available) to render spilled intervals differently. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108815 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Render MachineFunctions to HTML pages, with options to render registerLang Hames
pressure estimates and liveness alongside. Still experimental. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108698 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-18Added -pbqp-pre-coalescing flag to PBQP. If enabled this will cause PBQP to ↵Lang Hames
require LoopSplitter be run prior to register allocation. Entirely for testing purposes at the moment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17Iterating over sets of pointers in a heuristic was a bad idea. SwitchingLang Hames
any command line paramater changed the register allocation produced by PBQP. Turns out variety is not the spice of life. Fixed some comparators, added others. All good now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16Remove many calls to TII::isMoveInstr. Targets should be producing COPY anyway.Jakob Stoklund Olesen
TII::isMoveInstr is going tobe completely removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12Don't use getPhysicalRegisterRegClass in PBQP. The existing checks that theRafael Espindola
physical register can be allocated in the class of the virtual are sufficient. I think that the test for virtual registers is more strict than it needs to be, it should be possible to coalesce two virtual registers the class of one is a subclass of the other. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108118 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15improve portability to systems that don't have powf/modf (e.g. solaris 9)Chris Lattner
patch by Evzen Muller! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Remove terminating dot in description. Inconsistency pointedDuncan Sands
out by Russell Wallace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Removed an early out which was causing the PBQP allocator to not compute ↵Lang Hames
live-in sets or run the rewriter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96450 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09Fixed a bug in the PBQP allocator's findCoalesces method.Lang Hames
Previously spill registers, whose def indexes are not defined, would sometimes be improperly marked as coalescable with conflicting registers. The new findCoalesces routine conservatively assumes that any register with at least one undefined def is not coalescable with any register it interferes with. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26New PBQP solver.Lang Hames
* Fixed a reduction bug which occasionally led to infinite-cost (invalid) register allocation solutions despite the existence finite-cost solutions. * Significantly reduced memory usage (>50% reduction). * Simplified a lot of the solver code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94514 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92586 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
2009-11-15Added an assert to the PBQP allocator to catch infinite cost solutions which ↵Lang Hames
might otherwise lead to miscompilations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88829 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-03The Indexes Patch.Lang Hames
This introduces a new pass, SlotIndexes, which is responsible for numbering instructions for register allocation (and other clients). SlotIndexes numbering is designed to match the existing scheme, so this patch should not cause any changes in the generated code. For consistency, and to avoid naming confusion, LiveIndex has been renamed SlotIndex. The processImplicitDefs method of the LiveIntervals analysis has been moved into its own pass so that it can be run prior to SlotIndexes. This was necessary to match the existing numbering scheme. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85979 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-25Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces.Nick Lewycky
Chris claims we should never have visibility_hidden inside any .cpp file but that's still not true even after this commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85042 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-03Renamed MachineInstrIndex to LiveIndex.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83254 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20Tabs -> spaces, and remove trailing whitespace.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82355 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-06Remove some not-really-used variables, as warnedDuncan Sands
about by icc (#593, partial). Patch by Erick Tryzelaar. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81115 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-04Replaces uses of unsigned for indexes in LiveInterval and VNInfo withLang Hames
a new class, MachineInstrIndex, which hides arithmetic details from most clients. This is a step towards allowing the register allocator to update/insert code during allocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81040 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-03Fixed a test that ensures the LocalRewriter does not attempt toLang Hames
avoid reloads by reusing clobbered registers. This was causing issues in 256.bzip2 when compiled with PIC for a while (starting at r78217), though the problem has since been masked. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80872 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-20Suppress build warning in -AssertsDaniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79564 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19Added an option to have the PBQP allocator attempt coalescing during allocation.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79397 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-18Changes DOUT references in the PBQP allocator to use DEBUG(errs() ...)Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79378 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
2009-08-11Remove 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
2009-08-10Modified 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
2009-08-10Remove 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
2009-08-08Fix some -Asserts unused variable warnings.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78447 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06New C++ PBQP solver. Currently about as fast (read _slow_) as the old C ↵Lang Hames
based solver, but I'll be working to improve that. The PBQP allocator has been updated to use the new solver. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78354 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Use setPreservesAll and setPreservesCFG in CodeGen passes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77754 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25More migration to raw_ostream, the water has dried up around the iostream hole.Daniel Dunbar
- Some clients which used DOUT have moved to DEBUG. We are deprecating the "magic" DOUT behavior which avoided calling printing functions when the statement was disabled. In addition to being unnecessary magic, it had the downside of leaving code in -Asserts builds, and of hiding potentially unnecessary computations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77019 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17VNInfo cleanup.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73634 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-14Move register allocation preference (or hint) from LiveInterval to ↵Evan Cheng
MachineRegisterInfo. This allows more passes to set them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-30Untabification.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72604 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-17Prevented reg0 from being added to MBB live-in set, which was causing issuesLang Hames
for PostRAScheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71991 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Renamed Spiller classes (plus uses and related files) to VirtRegRewriter.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71057 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-03In some rare cases, the register allocator can spill registers but end up ↵Evan Cheng
not utilizing registers at all. The fundamental problem is linearscan's backtracking can end up freeing more than one allocated registers. However, reloads and restores might be folded into uses / defs and freed registers might not be used at all. VirtRegMap keeps track of allocations so it knows what's not used. As a horrible hack, the stack coloring can color spill slots with *free* registers. That is, it replace reload and spills with copies from and to the free register. It unfold instructions that load and store the spill slot and replace them with register using variants. Not yet enabled. This is part 1. More coming. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70787 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21It has finally happened. Spiller is now using live interval info.Evan Cheng
This fixes a very subtle bug. vr defined by an implicit_def is allowed overlap with any register since it doesn't actually modify anything. However, if it's used as a two-address use, its live range can be extended and it can be spilled. The spiller must take care not to emit a reload for the vn number that's defined by the implicit_def. This is both a correctness and performance issue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69743 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-17r66870 missed this out.Sanjiv Gupta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67082 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-13Convert VirtRegMap to a MachineFunctionPass.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66870 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Reorganization: Move the Spiller out of VirtRegMap.cpp into its own files. ↵Owen Anderson
No (intended) functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66720 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-20Change TargetInstrInfo::isMoveInstr to return source and destination ↵Evan Cheng
sub-register indices as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62600 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-08* Moved author attribution to CREDITS.TXTMisha Brukman
* Removed trailing whitespace git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61927 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-08* Alphabetized #includesMisha Brukman
* Removed trailing whitespace git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61926 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19Fix compilation error on MSVC.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59629 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-29 07:19:53 +0000