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Roman Levenstein 6b37114590 Use std::set instead of std::priority_queue for the RegReductionPriorityQueue. 
This removes the existing bottleneck related to the removal of elements from 
the middle of the queue.

Also fixes a subtle bug in ScheduleDAGRRList::CapturePred:
It was updating the state of the SUnit before removing it. As a result, the
comparison operators were working incorrectly and this SUnit could not be removed 
from the queue properly.

Reviewed by Evan and Dan. Approved by Dan.

llvm-svn: 50412
 		2008-04-29 09:07:59 +00:00
clang Update typestate logic to support GC-mode. 2008-04-29 05:44:10 +00:00
llvm Use std::set instead of std::priority_queue for the RegReductionPriorityQueue. 2008-04-29 09:07:59 +00:00