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| author | David Penry <david.penry@arm.com> | 2022-06-30 11:03:50 -0700 |
|---|---|---|
| committer | David Penry <david.penry@arm.com> | 2022-08-22 12:10:13 -0700 |
| commit | ced705c4407fa18329f8a6a50ce96a8f34a86820 (patch) | |
| tree | 48df310ef7159ac6b0952ed139e725cb0f9dc609 /llvm/lib/CodeGen/MachinePipeliner.cpp | |
| parent | f82c55fa082711f520a7359393b483956b69bf08 (diff) | |
| download | llvm-ced705c4407fa18329f8a6a50ce96a8f34a86820.zip llvm-ced705c4407fa18329f8a6a50ce96a8f34a86820.tar.gz llvm-ced705c4407fa18329f8a6a50ce96a8f34a86820.tar.bz2 | |
[ModuloSchedule] Add interface call to accept/reject SMS schedules
This interface allows a target to reject a proposed
SMS schedule. For Hexagon/PowerPC, all schedules
are accepted, leaving behavior unchanged. For ARM,
schedules which exceed register pressure limits are
rejected.
Also, two RegisterPressureTracker methods now need to be public so
that register pressure can be computed by more callers.
Reapplication of D128941/(reversion:D132037) with small fix.
Differential Revision: https://reviews.llvm.org/D132170
Diffstat (limited to 'llvm/lib/CodeGen/MachinePipeliner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachinePipeliner.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp index 52501ca..e561e0a 100644 --- a/llvm/lib/CodeGen/MachinePipeliner.cpp +++ b/llvm/lib/CodeGen/MachinePipeliner.cpp @@ -2099,6 +2099,12 @@ bool SwingSchedulerDAG::schedulePipeline(SMSchedule &Schedule) { << ")\n"); if (scheduleFound) { + scheduleFound = LoopPipelinerInfo->shouldUseSchedule(*this, Schedule); + if (!scheduleFound) + dbgs() << "Target rejected schedule\n"; + } + + if (scheduleFound) { Schedule.finalizeSchedule(this); Pass.ORE->emit([&]() { return MachineOptimizationRemarkAnalysis( |