David Given
8fd3e1f5ce
Merge pull request #131 from davidgiven/dtrg-mips
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Add an mcg-based MIPS code generator.
2018-09-20 23:05:55 +01:00
David Given
985d3dc7d1
Remove some old, hopefully unused PowerPC code. Teach the code generator about
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non-volatile long registers.
2018-09-20 23:30:38 +02:00
David Given
65a20ce2d6
Fix subtle register corruption bug where aliases weren't taken into account
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when assigning input registers to phis, which could cause the same hreg to be
assigned to two vregs of different types. Also improve tracing.
2018-09-20 23:24:46 +02:00
David Given
436d50b54c
Create correctly sized csa descriptors in the Basic compiler.
2018-09-20 00:49:31 +02:00
David Given
cb20856aea
A few more minor optimisations.
2018-09-20 00:39:13 +02:00
David Given
ac856f3b09
The approach I was taking to csa and csb turns out not to work --- critical
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edge splitting can cause new basic blocks to be added to the graph, but while
the graph itself gets properly rewritten the descriptor tables can't be updated
to take these into account, so they end up pointing at the wrong blocks. This
causes really hard-to-debug problems.
The new approach is to parse the descriptor blocks and then generate a
comparison chain. Brute force, but much easier for the compiler to reason
about.
2018-09-20 00:12:03 +02:00
David Given
ac921080b7
Fix incorrect ori encoding.
2018-09-20 00:06:26 +02:00
David Given
8fda024ec8
Remember to save longs and doubles. Yikes.
2018-09-19 00:09:50 +02:00
David Given
365c89c9e7
Updated READMEs with the MIPS platform.
2018-09-18 23:49:31 +02:00
David Given
9333b323a5
Make the MIPS boot code produce correct code.
2018-09-18 23:39:04 +02:00
David Given
d23d2dd1b3
Loads and stores (except longs, which are difficult) are now loaded with two
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instructions rather than three.
2018-09-18 23:38:37 +02:00
David Given
52ee317878
Fixed some bad mcg ir code generation: only nodes which have been appendir'd
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may be used multiple times.
2018-09-18 23:32:53 +02:00
David Given
692caa2b0a
Add unsigned comparison rules.
2018-09-18 00:19:40 +02:00
David Given
f362d12dee
Add extern declaration which I forget to check in.
2018-09-17 23:59:49 +02:00
David Given
fe177bd688
Add specialist rules for signed integer comparisons; much better code.
2018-09-17 23:53:18 +02:00
David Given
ec0891469f
Array descriptor ranges are inclusive; adjust aar and the tests to check for
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this. All the tests except rotate build now!
2018-09-17 19:34:38 +01:00
David Given
f61500c51b
Fix lar and sar, which were horribly, horribly broken. Add tests.
2018-09-17 18:44:17 +01:00
David Given
abb7e3e105
Fix aar; add test.
2018-09-17 16:59:45 +01:00
David Given
b665efca04
ACK loi 1 and sti 1 load and store unsigned bytes. I think.
2018-09-17 15:03:44 +01:00
David Given
c2dc1e184e
rotate() now generates valid code.
2018-09-17 13:13:39 +01:00
David Given
0202ac8700
Fix bls4.
2018-09-17 12:53:27 +01:00
David Given
1e073e944a
Added cms, and a test for it.
2018-09-17 12:42:10 +01:00
David Given
0b65591972
Add hacky 64-bit comparisons (used by M2).
2018-09-17 12:16:17 +01:00
David Given
15ae171aef
Added a test for set. Fix mips set implementation.
2018-09-17 11:56:15 +01:00
David Given
7efb749003
Set fixes; also add discrete tests for and, ior, xor.
2018-09-14 14:13:35 +01:00
David Given
08b1e8d71b
Make inn work; fix broken 64-bit loads and stores.
2018-09-14 13:48:43 +02:00
David Given
5d0876a30b
Implement a working .trp.
2018-09-14 12:26:27 +02:00
David Given
ba0849c87c
Remove la; turns out that the assembler gets upset if you ask it to
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generate more than one fixup per instruction (I think).
2018-09-14 11:30:15 +02:00
David Given
ac33bdd031
Clang-format before editing.
2018-09-14 09:28:35 +02:00
David Given
c4e3d0903e
Bugfix rck.
2018-09-14 00:38:31 +02:00
David Given
8c0b2f8aee
Fix csa and csb.
2018-09-14 00:15:43 +02:00
David Given
9b0a1c1c10
Make work with clang.
2018-09-14 00:04:25 +02:00
David Given
57338b1991
Fix an incorrect instruction, and incredibly broken li handling.
2018-09-12 23:59:09 +02:00
David Given
ecb3395aba
Converting floats and doubles to integers now works, as much as these ever do
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on MIPS; turns out that it can't (or at least can't in qemu) reliably turn
INT_MIN from a double to an int.
2018-09-12 23:58:48 +02:00
David Given
642956fa2f
mcg now uses dataf4 and dataf8 to emit floating point constants, and so doesn't
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need flt_arith any more. (And also generates them correctly on little-endian
systems.) as now parses numbers properly, doesn't trash memory all over the
place, and can handle negative numbers.
2018-09-12 23:19:32 +02:00
David Given
8105281534
Make sure li works properly when loading fixed up values which end up as 0. Use
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lui rather than li to load high values.
2018-09-12 22:28:40 +02:00
David Given
a8df9721d3
Adding new tokens to the assembler isn't quite as easy as I thought: ensure
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that NUMBERF is stored properly in the temporary file.
2018-09-12 22:27:39 +02:00
David Given
5264db860d
Values are more useful shown in hex.
2018-09-11 23:17:09 +02:00
David Given
8379969b6f
Fix an unsubtle bug where subtractions were done backwards...
2018-09-11 23:16:50 +02:00
David Given
8230ec42ac
Fix a subtle thinko which was causing bits 2-3 of jump targets to be reset.
2018-09-11 23:16:30 +02:00
David Given
b81e060372
Add huge numbers of failing tests.
2018-09-10 23:40:03 +02:00
David Given
0ce368324e
Add the bitset helpers. We now have enough helpers for the tests to run (and
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massively fail).
2018-09-10 23:37:28 +02:00
David Given
2f8fe3ce6e
Do some cleanup; ha16[] and friends can now be used with li.
2018-09-10 23:37:04 +02:00
David Given
3122946a6f
Replaced some incorrect hi16s with ha16s.
2018-09-10 23:21:54 +02:00
David Given
008737ed19
Added some more very untested helper functions.
2018-09-10 23:20:52 +02:00
David Given
a1747ac916
Add the .dataf4 and .dataf8 directives to the assembler --- manually converting
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floats and doubles to bytes is not fun. It might even work!
2018-09-10 22:56:18 +02:00
David Given
53f7de794a
Ansify.
2018-09-10 22:55:05 +02:00
David Given
9733454d8e
Clang-format before editing.
2018-09-10 22:42:30 +02:00
David Given
976fa0efca
Clang-format before editing.
2018-09-10 22:37:04 +02:00
David Given
6275896a11
Clang-format before editing.
2018-09-10 22:25:14 +02:00
