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* Don't charge full latency for an anti-dependence, in this simplisticDan Gohman2008-12-091-3/+7
| | | | | | pipeline model. llvm-svn: 60733
* Experimental post-pass scheduling support. Post-pass schedulingDan Gohman2008-11-191-0/+165
is currently off by default, and can be enabled with -disable-post-RA-scheduler=false. This doesn't have a significant impact on most code yet because it doesn't yet do anything to address anti-dependencies and it doesn't attempt to disambiguate memory references. Also, several popular targets don't have pipeline descriptions yet. The majority of the changes here are splitting the SelectionDAG-specific code out of ScheduleDAG, so that ScheduleDAG can be moved to libLLVMCodeGen.a. The interface between ScheduleDAG-using code and the rest of the scheduling code is somewhat rough and will evolve. llvm-svn: 59676
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