8849e370ca
Register allocation now uses SSA properties to coalesce values with different representations
2010-05-03 17:34:20 -04:00
88d15dfbea
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
2d575d7ec9
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
4d2160799f
Split off the notion of a register representation from a register class
2009-08-07 17:44:50 -05:00
f19ee61d3a
compiler.cfg.linear-scan: use compiler.cfg.parallel-copy in resolve pass
2009-07-28 07:39:46 -05:00
c355c21de6
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
5d9f7b0ed2
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
31ae0845f3
compiler.cfg.linear-scan.resolve: get it to work on CFGs with critical edges
2009-07-12 23:00:33 -05:00
65cb2d84a7
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
4ef76762e3
compiler.cfg.linear-scan: debugging spilling, add more assertions
2009-07-07 13:01:27 -05:00
39dba00279
compiler.cfg.linear-scan: Working on resolve pass
2009-06-21 00:20:01 -05:00
d09ece8152
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
ad5ef2a3cc
Linear scan: correctly compute live spill slots
2009-06-05 18:06:47 -05:00
968a9bb666
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