David Given
4db402f229
Add (pretty crummy) support for register aliases and static pairs of registers.
...
We should have enough functionality now for rather buggy 8-bit ints and
doubles. Rework the table and the platform.c to match.
2016-10-21 23:31:00 +02:00
David Given
d6984d60ac
Add parsing support for register aliases.
2016-10-20 21:47:28 +02:00
David Given
6a06ce798b
Add missing header that was causing builds to fail on Travis.
2016-10-16 17:58:01 +02:00
David Given
bb17aea73a
You can now mark a register as corrupting a certain register class; calls work,
...
or at least look like they work. The bad news is that the register allocator
has a rare talent for putting things in the wrong register.
2016-10-15 01:15:08 +02:00
David Given
cfe5312fcc
Predicates can now take numeric arguments. The PowerPC predicates have been
...
turned into generic ones (as they'll be useful everywhere). Node arguments for
predicates require the '%' prefix for consistency. Hex numbers are permitted.
2016-10-09 12:32:36 +02:00
David Given
7f901aa4d0
We're not using 'allocates' any more; clean up.
2016-10-06 21:33:43 +02:00
David Given
3aa30e50d1
Come up with a syntax for register constraints.
2016-10-02 21:51:25 +02:00
David Given
91e277e046
Predicates work; we now have prefers and requires clauses. Predicates must be
...
functions. Not convinced that semantic types are actually working --- there are
still problems with earlier statements leaving things in the wrong registers.
2016-10-01 13:56:52 +02:00
David Given
39aa672422
Sort of keep track of registers and register classes. Start walking the
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generated instruction tree --- holy cow, they look like instructions!
2016-09-25 22:17:14 +02:00
David Given
9f78e0b36b
Rethink the way patterns are mapped to rules; generate emitters (probably
...
badly).
2016-09-25 11:49:51 +02:00
David Given
7c028bdd45
We now record the code fragments to be emitted by each rule.
2016-09-25 00:21:46 +02:00
David Given
629e0ddfc6
Some instruction selection is now happening.
2016-09-24 22:46:08 +02:00
David Given
d96ceea08a
Lots of exploratory new grammar for instruction definitions and string and
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fragment emission (none of which is hooked up to anything yet).
2016-09-24 13:08:17 +02:00
David Given
4546dd5f22
Massive grammar overhaul and refactor. Hacked in support for predicates, where
...
instructions can be turned on and off based on their parameters. New lexer
using a lexer. Now quite a lot of the way towards being a real instruction
selector.
2016-09-21 00:43:10 +02:00
