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
9f926ab88c
compiler.cfg.block-joining: join basic blocks connected by a single edge to improve effectiveness of local optimizations
2009-07-16 02:17:58 -05:00
11731f8d48
compiler.cfg.value-numbering: merge in compiler.cfg.branch-folding
2009-07-14 20:05:01 -05:00
d7aeae45be
compiler.cfg.branch-splitting: split blocks with successors
2009-07-13 10:44:08 -05:00
2de41f01da
compiler.cfg.optimizer: enable branch folding
2009-07-02 01:05:59 -05:00
f894baf60e
compiler.cfg.optimizer: disable branch folding for now
2009-06-30 23:07:27 -05:00
3385e50c43
compiler.cfg.branch-folding: fold away branches where both inputs are the same register. This results in 'push' being compiled slightly better
2009-06-30 22:43:32 -05:00
f412bbc6d6
Change branch splitting around a bit, rename useless-blocks to useless-conditionals and rewrite it
2009-06-30 22:11:15 -05:00
5c6c3ecd85
compiler.cfg.tco: Tail call optimization moved out of compiler.cfg.builder into its own pass
2009-06-30 20:13:35 -05:00
ef32eb2e72
Fix bootstrap and unit test
2009-06-26 17:44:33 -05:00
96baede36a
Redesign compiler.cfg.stack-analysis to make compiler.cfg.height redundant, and to fix some problems
2009-06-26 17:29:55 -05:00
7c207ffa12
compiler.cfg.optimizer: disable CFG checker by default
2009-06-05 18:07:22 -05:00
5bb235d38f
compiler.cfg.checker: run if a variable is set
2009-06-05 17:32:12 -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
dadb9a2c50
Add phi elimination pass
2009-05-27 18:58:01 -05:00
1db81da264
Refactoring low-level optimizer to support stack analysis pass
2009-05-26 19:31:19 -05:00
445e353337
Optimize away useless jumps
2008-11-02 23:09:31 -06:00
885adc8dc9
Various improvements
2008-10-23 05:27:54 -05:00
d723b69990
Value numbering
2008-10-22 21:59:07 -05:00
9a07760542
CFG optimizer
2008-10-22 18:41:37 -05:00
Slava Pestov
Slava Pestov