David Given
61349389fb
More opcodes. sti can now cope with non-standard sizes (really need a better
...
fix for this). Hack in crude support for mismatched stack pushes and pops (ints
vs longs).
2016-10-29 12:48:05 +02:00
David Given
2cc2c0ae98
Lots more opcodes. Rearrange the stack layout so that fp->ab is a fixed value
...
(needed for CHAINFP and FPTOAB). Wire up lfrs to calls via a phi when
necessary, to allow call-bra-lfr chains.
2016-10-29 11:57:56 +02:00
David Given
abd0cedd61
Massive change to how IR types are handled; we use the type code for matching
...
rather than the size. Much cleaner and simpler.
2016-10-23 21:54:14 +02:00
David Given
b1a3d76d6f
Re-re-add the type inference layer, now I know more about how things work.
...
Remove that terrible float promotion code.
2016-10-22 23:04:13 +02:00
David Given
11b0bc1055
More opcodes.
2016-10-22 20:32:51 +02:00
David Given
2d52b1fdaa
Remove GETRET; values are now returned directly by CALL. Fix a bug in
...
convertstackops which was resulting in duplicate IR groups.
2016-10-22 12:13:57 +02:00
David Given
ceb938fb3c
More opcodes.
2016-10-22 11:26:28 +02:00
David Given
7ae888b754
Hacky workaround the way the Modula-2 compiler generates non-standard sized
...
loads and saves. More opcodes; simplified table using macros.
2016-10-22 10:48:22 +02:00
David Given
f851ab83af
Better (and more correct) floating point conversions; fif; various new opcodes.
2016-10-22 00:48:26 +02:00
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
e4fec71f9c
Lots more opcodes; better eviction behaviour; better register moves. Lots more
...
PowerPC stuff (some working).
2016-10-19 23:29:05 +02:00
David Given
5ad3aa8595
Add a pile of new instructions used by Pascal; I'm going to need to think about
...
how locals and the local base are handled.
2016-10-15 13:07:59 +02:00
David Given
f06b51c981
Keep track of register types as well as attributes --- the type being how we
...
find new registers when evicting values. Input constraints work (they were
being ignored before). Various bug fixing so they actually work.
2016-10-12 22:58:46 +02:00
David Given
23c3575f0f
The register allocator now makes a spirited attempt to honour register
...
attributes when allocating. Unfortunately, backward edges don't work (because
the limited def-use chain stuff doesn't work across basic blocks). Needs more
thought.
2016-10-09 15:09:34 +02:00
David Given
68f98cbad7
Instruction selection now happens on a shadow tree, rather than on the IR tree
...
itself. Currently it's semantically the same but the implementation is cleaner.
2016-10-03 20:52:36 +02:00
David Given
c079e97492
Perform SSA conversion of locals. Much, *much* better code now, at least
...
inasmuch as it looks better before register allocation. Basic blocks now know
their own successors and predecessors (after a certain point in the IR
processing).
2016-10-02 17:50:34 +02:00
David Given
21898f784a
We're going to need some type inference after all, I think. Let's do a little
...
for now and see how it goes.
2016-10-01 19:10:22 +02:00
David Given
a0131fdb47
You know what, the type inference stuff is a complete red herring. What this
...
actually needs is a more intelligent register allocator. So, remove the type
inference.
2016-09-29 19:58:02 +02:00
David Given
cc176e5183
Keep more data around about ir instructions. Implement a half-baked type
...
inference routine to propagate information about floats up the tree, so we know
whether to put floats into special registers as early as possible.
2016-09-26 22:12:46 +02:00
David Given
629e0ddfc6
Some instruction selection is now happening.
2016-09-24 22:46:08 +02:00
David Given
2acc4ed29d
IR codes are now owned by mcgg; ir terminals are inserted into the table during
...
compilation (so you can refer to them).
2016-09-24 18:31:35 +02:00
