llvm-project/llvm/include
Andrew Trick 85a1d4cbc0 MI Sched: eliminate local vreg copies.
For now, we just reschedule instructions that use the copied vregs and
let regalloc elliminate it. I would really like to eliminate the
copies on-the-fly during scheduling, but we need a complete
implementation of repairIntervalsInRange() first.

The general strategy is for the register coalescer to eliminate as
many global copies as possible and shrink live ranges to be
extended-basic-block local. The coalescer should not have to worry
about resolving local copies (e.g. it shouldn't attemp to reorder
instructions). The scheduler is a much better place to deal with local
interference. The coalescer side of this equation needs work.

llvm-svn: 180193
2013-04-24 15:54:43 +00:00
..
llvm MI Sched: eliminate local vreg copies. 2013-04-24 15:54:43 +00:00
llvm-c c vs c++ mistake in header file typedef for AtomicRMW fix in rev 180100. 2013-04-23 13:45:37 +00:00