[PATCH] D33105: [AMDGPU] Turn register pressure estimation into forward tracker

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec updated this revision to Diff 99031.
rampitec added a comment.

Speedup the tracker:

1. Replace MRI.reg_nodbg_empty() with LIS.hasInterval().
2. Delete empty regs from live set when tracking.


Repository:
  rL LLVM

https://reviews.llvm.org/D33105

Files:
  lib/Target/AMDGPU/GCNRegPressure.cpp
  lib/Target/AMDGPU/GCNRegPressure.h
  lib/Target/AMDGPU/GCNSchedStrategy.cpp
  lib/Target/AMDGPU/GCNSchedStrategy.h

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