llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-12 18:33:22 +00:00

History

Jakob Stoklund Olesen 5928046306 Allow allocatable ranges from global live range splitting to be split again.

These intervals are allocatable immediately after splitting, but they may be
evicted because of later splitting. This is rare, but when it happens they
should be split again.

The remainder intervals that cannot be allocated after splitting still move
directly to spilling.

SplitEditor::finish can optionally provide a mapping from new live intervals
back to the original interval indexes returned by openIntv().

Each original interval index can map to multiple new intervals after connected
components have been separated. Dead code elimination may also add existing
intervals to the list.

The reverse mapping allows the SplitEditor client to treat the new intervals
differently depending on the split region they came from.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129925 91177308-0d34-0410-b5e6-96231b3b80d8

2011-04-21 18:38:15 +00:00

Analysis

Use ArrayRef variants.

2011-04-18 23:51:03 +00:00