3 Commits

Author	SHA1	Message	Date
Dan Gohman	47ac0f0c7c	When scheduling a block in parts, keep track of the overall ... instruction index across each part. Instruction indices are used to make live range queries, and live ranges can extend beyond scheduling region boundaries. Refactor the ScheduleDAGSDNodes class some more so that it doesn't have to worry about this additional information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64288 91177308-0d34-0410-b5e6-96231b3b80d8	2009-02-11 04:27:20 +00:00
Dan Gohman	9e64bbb322	Factor out more code for computing register live-range informationfor ... scheduling, and generalize is so that preserves state across scheduling regions. This fixes incorrect live-range information around terminators and labels, which are effective region boundaries. In place of looking for terminators to anchor inter-block dependencies, introduce special entry and exit scheduling units for this purpose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64254 91177308-0d34-0410-b5e6-96231b3b80d8	2009-02-10 23:27:53 +00:00
Dan Gohman	6dc75fe527	Move ScheduleDAGInstrs.h to be a private header. Front-ends ... that used this header to select a scheduling policy should use SchedulerRegistry.h instead (llvm-gcc and clang were updated a while ago). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63934 91177308-0d34-0410-b5e6-96231b3b80d8	2009-02-06 17:12:10 +00:00