d0p1/ack
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
6950 commits 2 branches 0 tags 43 MiB
Commit graph

6950 commits

This branch
This branch
All branches
Author SHA1 Message Date
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
ba1a3656a1 You can tell whether an item already exists in the array when calling 
array_appendu() now.
 2016-09-28 23:39:00 +02:00
David Given
4572f1b774 Actually, I don't need vregs: hops work just as well. Particularly if I 
restructure things so that I don't need to walk the blasted ir / burg tree
every time I look at an instruction.
 2016-09-27 23:38:47 +02:00
David Given
e77c5164cf Fleshed out hops and vregs. The result is almost looking like code now --- 
uncanny.
 2016-09-27 00:19:45 +02:00
David Given
f552c9c7c6 Move map into the data module. 2016-09-26 23:03:04 +02:00
David Given
c4b8e00ae2 Revamp the array module not to use nasty macros any more. Slightly more verbose 
to use, but definitely cleaner.
 2016-09-26 22:48:58 +02:00
David Given
3671892c34 Move the array library into the data module. 2016-09-26 22:24:49 +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
416b13fd76 Start factoring out the hardware op code. 2016-09-25 23:29:59 +02:00
David Given
39aa672422 Sort of keep track of registers and register classes. Start walking the 
generated instruction tree --- holy cow, they look like instructions!
 2016-09-25 22:17:14 +02:00
David Given
bde5792b1a Collapse several rule arrays into one; actually generate the array properly. 2016-09-25 17:14:54 +02:00
David Given
67eb21d428 Rename struct insn to struct em (throughout). 2016-09-25 12:29:03 +02:00
David Given
bcc74ba18d Stupid stringlist is stupid. Use a proper data structure, properly abstracted 
out (so other things can use it).
 2016-09-25 12:18:39 +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
717b77dd0a Instruction selection is so important the file needs a longer name. 2016-09-24 22:50:53 +02:00
David Given
629e0ddfc6 Some instruction selection is now happening. 2016-09-24 22:46:08 +02:00
David Given
c8fcbe282a More grammar changes. 2016-09-24 19:03:55 +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
David Given
1516657907 Crudely bolt on mcgg to mcg itself. 2016-09-24 17:20:40 +02:00
David Given
13132128a1 Parameters are parsed with getopt. Simplify, constify. 2016-09-24 16:59:49 +02:00
David Given
434eafd35d Change the predicate stuff to use costs instead; now you can use when clauses 
on leaves. Remove an iburg premature optimisation (required for above).
 2016-09-24 13:33:59 +02:00
David Given
d96ceea08a Lots of exploratory new grammar for instruction definitions and string and 
fragment emission (none of which is hooked up to anything yet).
 2016-09-24 13:08:17 +02:00
David Given
960259f0b0 Add support for labelled tree nodes. 2016-09-24 12:11:30 +02:00
David Given
6643d39b2c Fix some late-night typo bugs. 2016-09-24 01:09:32 +02:00
David Given
bb9aa030a5 Procedure compilation now happens after the entire EM file has been read in (so 
that we can look inside data blocks which might be defined in the future...
sigh, csa and csb). csa and csb no longer generate invalid IR.
 2016-09-24 01:04:00 +02:00
David Given
ed67d427c9 Replaced the block splicer with a trivial block eliminator (which rewrites 
jumps to blocks which contain only a jump). Don't bother storing the bb graph
in the ir nodes; we can find it on demand by walking the tree instead ---
slower, but much easier to understand and more robust. Added a terrible map
library.
 2016-09-23 23:59:15 +02:00
David Given
f8bbf9e87d Each pass now lives in its own source file; much cleaner. 2016-09-23 21:07:16 +02:00
David Given
9077baa850 Add a bodged in algorithm for converting basic block communication from stacked 
variables to SSA. Also add dead block removal and block splicing. IR code is
much better now.
 2016-09-22 23:19:29 +02:00
David Given
6a74cb2e11 Tracing cleanup. Simplified the IR code. Some more opcodes. 2016-09-22 00:15:48 +02:00
David Given
bbac1193ff Merge pull request #5 from kernigh/fix-isatty 
Implement isatty() for Linux.
 2016-09-21 19:47:00 +02:00
George Koehler
f6dc6f6875 Implement isatty() for Linux. 
If it understands TIOCGETD, then it is a tty, else it isn't one.  This
seems to help Basic's input statement so I can see the prompt before
I enter my input.
 2016-09-20 21:28:37 -04:00
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
David Given
2183c6c622 Run through clang-format. 2016-09-20 21:00:16 +02:00
David Given
03b7202e54 Strip out surplus files. Rewrite README. 2016-09-20 20:46:45 +02:00
David Given
5cb3fbb3d3 Import iburg. 2016-09-20 20:44:51 +02:00
David Given
13c117d15d Import iburg. 2016-09-20 20:37:16 +02:00
David Given
36d7d1ee4e Create hacky fake basic blocks for data fragments, used to track which 
instruction labels descriptor blocks refer to; this allows csa and csb to know
where they're going.
 2016-09-20 00:19:39 +02:00
David Given
dcba03646b Treebuilder now gets to the bottom of my test file, merrily generating 
(probably horribly broken) IR.
 2016-09-19 23:30:41 +02:00
David Given
6ce2495aeb Store the EM code up front and build the basic block graph *before* 
generating the IR code. Lots more IR code.
 2016-09-19 23:06:59 +02:00
David Given
176cd7365c Archival checking of the half-written IR treebuilder. 2016-09-18 23:24:54 +02:00
David Given
f992eb28ac ANSIise to fix warnings. 2016-09-18 00:23:42 +02:00
David Given
24380e2a93 Abstract out the EM reader; skeleton of the tree builder. 2016-09-18 00:02:16 +02:00
David Given
2eee391aef Basic skeleton of em parser. 2016-09-17 22:21:47 +02:00
David Given
80cb6ba927 Eliminate the RELOH2 relocation, as it never worked --- the address would be 
calculated incorrectly because of overflow errors.

Replace it with an extended RELOPPC relocation which understands addis/ori
pairs; add an la pseudoop to the assembler which generates these and the
appropriate relocation. Make good.

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-17 12:43:15 +02:00
David Given
45a950571d Mostly add support for the experimental and largely broken linuxppc platform. 
(Doesn't quite build.)

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-15 23:12:03 +02:00
David Given
4703db0fff Merge from default. 
--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-15 22:59:01 +02:00
David Given
52ad82f8b9 Merge pull request #3 from kernigh/ego-fix 
Fix bugs with memory allocation in ego.
 2016-09-10 11:25:21 +02:00
George Koehler
b1d1b5e1f8 Fix bugs with memory allocation in ego. 
cf/cf_loop.c and share/put.c tried to read the next pointer in an
element of a linked list after freeing the element.  ud/ud_copy.c
tried to read beyond the end of the _defs_ array: it only has
_nrexpldefs_ elements, not _nrdefs_ elements.

These bugs caused core dumps on OpenBSD.  Its malloc() put _defs_ near
the end of a page, so reading beyond the end crossed into an unmapped
page.  Its free() wrote junk bytes and changed the next pointer to
0xdfdfdfdfdfdfdfdf.
 2016-09-09 23:37:43 -04:00
David Given
8c94b1316c Add unlink system call. 2016-09-04 19:23:02 +02:00