43f269e4eb
Register allocation now uses SSA properties to coalesce values with different representations
2010-05-03 17:34:20 -04:00
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
4b7ba38aab
compiler.cfg: virtual registers are integers now, and representations are stored off to the side. Fix bug in representation selection that would manifest if a value was used as a float and a fixnum in different branches; cannot globally unbox float in this case
2009-08-08 04:02:18 -05:00
725280d424
Split off the notion of a register representation from a register class
2009-08-07 17:44:50 -05:00
857ef94acc
compiler.cfg.linear-scan: use compiler.cfg.parallel-copy in resolve pass
2009-07-28 07:39:46 -05:00
89db2e745d
Move liveness back to compiler.cfg.liveness, fix a corner-case where it didn't work on some forms of non-SSA code
2009-07-22 06:07:28 -05:00
21a012e3d7
compiler.cfg: Major restructuring -- do not compute liveness before local optimization, and instead change local optimizations to be more permissive of undefined values. Now, liveness is only computed once, after phi elimination and before register allocation. This means liveness analysis does not need to take phi nodes into account and can now use the new compiler.cfg.dataflow-analysis framework
2009-07-22 03:08:28 -05:00
8ff473e42c
compiler.cfg.linear-scan.resolve: get it to work on CFGs with critical edges
2009-07-12 23:00:33 -05:00
c20e6c290f
compiler.cfg.linear-scan: split off parallel mapping code from resolve pass, use it in assignment pass to resolve parallel copies
2009-07-08 23:07:06 -05:00
e2044602aa
compiler.cfg.linear-scan: debugging spilling, add more assertions
2009-07-07 13:01:27 -05:00
5a78956956
compiler.cfg.linear-scan: Working on resolve pass
2009-06-21 00:20:01 -05:00
d0f6a7d048
Split up compiler.cfg.linear-scan.allocation into a number of sub-vocabularies; start work on compiler.cfg.linear-scan.resolve; start work on inactive interval splitting
2009-06-11 17:55:14 -05:00
04c72d0a72
Linear scan: correctly compute live spill slots
2009-06-05 18:06:47 -05:00
e04df76f60
Various codegen improvements:
...
- new-insn word to construct instructions
- cache RPO in the CFG
- re-organize low-level optimizer so that MR is built after register allocation
- register allocation now stores instruction numbers in the instructions themselves
- split defs-vregs into defs-vregs and temp-vregs
2009-05-29 13:11:34 -05:00
c0d89b061e
Fixing register allocator prspilling
2008-10-19 01:10:21 -05:00
cf46a832e7
Debugging register allocator and inline allocation
2008-10-08 23:42:53 -05:00
7b6d9c4c4f
Debugging new codegen
2008-10-07 20:00:38 -05:00
f436fd0c0f
Merging in new codegen
2008-10-07 16:16:50 -05:00
Slava Pestov
Slava Pestov