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path: root/include/llvm/CodeGen/RegisterPressure.h
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* Update LLVM for rebase to r212749.Stephen Hines2014-07-211-2/+0
| | | | | | | Includes a cherry-pick of: r212948 - fixes a small issue with atomic calls Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18
* Update LLVM for 3.5 rebase (r209712).Stephen Hines2014-05-291-7/+8
| | | | Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
* Represent RegUnit liveness with LiveRange instanceMatthias Braun2013-10-101-2/+2
| | | | | | | Previously LiveInterval has been used, but having a spill weight and register number is unnecessary for a register unit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192397 91177308-0d34-0410-b5e6-96231b3b80d8
* mi-sched: cleanup register pressure update, remove a FIXME.Andrew Trick2013-09-061-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190181 91177308-0d34-0410-b5e6-96231b3b80d8
* Added -misched-regpressure option.Andrew Trick2013-09-041-0/+2
| | | | | | | | Register pressure tracking is half the complexity of the scheduler. It's useful to be able to turn it off for compile time and performance comparisons. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189987 91177308-0d34-0410-b5e6-96231b3b80d8
* Free PressureDiffs instead of leaking.Benjamin Kramer2013-08-311-0/+1
| | | | | | Found by valgrind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189725 91177308-0d34-0410-b5e6-96231b3b80d8
* mi-sched: update PressureDiffs on-the-fly for liveness.Andrew Trick2013-08-301-1/+1
| | | | | | | This removes all expensive pressure tracking logic from the scheduling critical path of node comparison. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189643 91177308-0d34-0410-b5e6-96231b3b80d8
* mi-sched: improve the generic register pressure comparison.Andrew Trick2013-08-301-3/+2
| | | | | | | Only compare pressure within the same set. When multiple sets are affected, we prioritize the most constrained set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189641 91177308-0d34-0410-b5e6-96231b3b80d8
* mi-sched: Precompute a PressureDiff for each instruction, adjust for ↵Andrew Trick2013-08-301-21/+102
| | | | | | | | | | | | | liveness later. Created SUPressureDiffs array to hold the per node PDiff computed during DAG building. Added a getUpwardPressureDelta API that will soon replace the old one. Compute PressureDelta here from the precomputed PressureDiffs. Updating for liveness will come next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189640 91177308-0d34-0410-b5e6-96231b3b80d8
* MI Sched: Track live-thru registers.Andrew Trick2013-07-301-3/+34
| | | | | | | | | | | When registers must be live throughout the scheduling region, increase the limit for the register class. Once we exceed the original limit, they will be spilled, and there's no point further reducing pressure. This isn't a perfect heuristics but avoids a situation where the scheduler could become trapped by trying to achieve the impossible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187436 91177308-0d34-0410-b5e6-96231b3b80d8
* MI Sched: Register pressure heuristics.Andrew Trick2013-07-251-0/+4
| | | | | | Consider which set is being increased or decreased before comparing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187110 91177308-0d34-0410-b5e6-96231b3b80d8
* RegPressureTracker::dump(): Remove unnecessary argument.Andrew Trick2012-12-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169443 91177308-0d34-0410-b5e6-96231b3b80d8
* RegisterPressureTracker: unify virtual registers and physical regunits.Andrew Trick2012-12-051-20/+43
| | | | | | Now that live register units are tracked individually, the code can be simplified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169426 91177308-0d34-0410-b5e6-96231b3b80d8
* RegisterPresssureTracker: Track live physical register by unit.Andrew Trick2012-12-051-3/+10
| | | | | | | | This is much simpler to reason about, more efficient, and fixes some corner cases involving implicit super-register defs. Fixed rdar://12797931. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169425 91177308-0d34-0410-b5e6-96231b3b80d8
* Added RegisterPressureTracker::dump() for debugging.Andrew Trick2012-12-051-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169359 91177308-0d34-0410-b5e6-96231b3b80d8
* Sort the #include lines for the include/... tree with the script.Chandler Carruth2012-12-031-1/+1
| | | | | | | | | | AKA: Recompile *ALL* the source code! This one went much better. No manual edits here. I spot-checked for silliness and grep-checked for really broken edits and everything seemed good. It all still compiles. Yell if you see something that looks goofy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169133 91177308-0d34-0410-b5e6-96231b3b80d8
* misched: Fix RegisterPressureTracker handling of DebugVals.Andrew Trick2012-12-011-1/+6
| | | | | | | Assertion failed: (TopRPTracker.getPos() == RegionBegin && "bad initial Top tracker"). rdar://12790302. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169072 91177308-0d34-0410-b5e6-96231b3b80d8
* misched: handle on-the-fly regpressure queries better for 2-addrAndrew Trick2012-11-071-1/+2
| | | | | | instructions without relying on liveintervals. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167526 91177308-0d34-0410-b5e6-96231b3b80d8
* misched: When querying RegisterPressureTracker, always save current and max ↵Andrew Trick2012-06-111-5/+8
| | | | | | pressure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158340 91177308-0d34-0410-b5e6-96231b3b80d8
* Register pressure: added getPressureAfterInstr.Andrew Trick2012-06-091-0/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158256 91177308-0d34-0410-b5e6-96231b3b80d8
* Move RegisterPressure.h.Andrew Trick2012-06-061-0/+255
Make it a general utility for use by Targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158097 91177308-0d34-0410-b5e6-96231b3b80d8
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