Commit Graph

9 Commits (c794c347a3ddedfc8cdf65d6eb82d11b53d6a918)

Author SHA1 Message Date
Slava Pestov d0c393aa60 compiler.cfg: new system to track when results of analyses need to be recomputed (reverse post order, linear order, predecessors, dominance, loops). Passes can now call needs-predecessors, needs-dominance, needs-loops at the beginning, and cfg-changed, predecessors-changd at the end. Linearization order now takes loop nesting into account, and linear scan now uses linearization order instead of RPO. 2009-08-08 20:02:56 -05:00
Slava Pestov 74766d1ccd compiler.cfg.linear-scan.assignment: modifies instructions in place instead of storing a registers assoc for further compile-time performance improvement 2009-07-29 06:36:14 -05:00
Slava Pestov d394dd3c36 compiler.cfg.branch-splitting: re-enable with a better heuristic 2009-07-28 08:48:05 -05:00
Slava Pestov 93c58a8bb5 compiler.cfg.branch-splitting: now that we do SSA construction we can split branches with fixnum overflow ops (which have a live-out) 2009-07-23 18:02:29 -05:00
Slava Pestov e76dce8aff Overflowing fixnum intrinsics now expand into several CFG nodes. This speeds up the common case since only the uncommon case is now a stack syncpoint 2009-07-16 18:29:40 -05:00
Slava Pestov 4ac74e9304 compiler.cfg.branch-splitting: don't split if there's one predecessor 2009-07-14 20:42:50 -05:00
Slava Pestov d7aeae45be compiler.cfg.branch-splitting: split blocks with successors 2009-07-13 10:44:08 -05:00
Slava Pestov f412bbc6d6 Change branch splitting around a bit, rename useless-blocks to useless-conditionals and rewrite it 2009-06-30 22:11:15 -05:00
Doug Coleman ea072731d4 add branch splitting pass to compiler.cfg 2009-06-30 15:31:48 -05:00