David Given [Mon, 3 Oct 2016 22:16:06 +0000 (00:16 +0200)]
Massive rewrite of how emitters and the instruction selector works, after I
realised that the existing approach wasn't working. Now, hopefully, tracks the
instruction trees generated during selection properly.
David Given [Mon, 3 Oct 2016 18:52:36 +0000 (20:52 +0200)]
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.
David Given [Sun, 2 Oct 2016 21:25:54 +0000 (23:25 +0200)]
Get quite a long way towards basic output-register equality constraints (needed
to make special nodes like NOP work properly). Realise that the way I'm dealing
with the instruction selector is all wrong; I need to physically copy chunks of
tree to give to burg (so I can terminate them correctly).
David Given [Sun, 2 Oct 2016 19:51:25 +0000 (21:51 +0200)]
Come up with a syntax for register constraints.
David Given [Sun, 2 Oct 2016 15:50:34 +0000 (17:50 +0200)]
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).
David Given [Sun, 2 Oct 2016 15:24:31 +0000 (17:24 +0200)]
Add array push/pop; fix ghastly memory overrun bug.
David Given [Sun, 2 Oct 2016 14:08:46 +0000 (16:08 +0200)]
Add zrl opcode. Keep track of local sizes as well as offsets.
David Given [Sun, 2 Oct 2016 12:44:21 +0000 (14:44 +0200)]
Add inl and del opcodes.
David Given [Sat, 1 Oct 2016 22:30:33 +0000 (00:30 +0200)]
Refactor mcg.h as it's getting a bit big; keep track of register variables.
David Given [Sat, 1 Oct 2016 21:41:45 +0000 (23:41 +0200)]
Make betterer.
David Given [Sat, 1 Oct 2016 21:41:35 +0000 (23:41 +0200)]
Fix edge case where leftover pushes would occasionally cause infinite loops in
the analysis.
David Given [Sat, 1 Oct 2016 21:41:03 +0000 (23:41 +0200)]
Show expression trees correctly.
David Given [Sat, 1 Oct 2016 21:13:39 +0000 (23:13 +0200)]
Deal with malformed mes instructions emitted by ego.
David Given [Sat, 1 Oct 2016 20:58:29 +0000 (22:58 +0200)]
More rigorous dealing of IR groups; no need for is_generated and is_root any
more (but now passes are required to set IR roots properly when changing
instructions).
David Given [Sat, 1 Oct 2016 17:10:22 +0000 (19:10 +0200)]
We're going to need some type inference after all, I think. Let's do a little
for now and see how it goes.
David Given [Sat, 1 Oct 2016 11:56:52 +0000 (13:56 +0200)]
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.
David Given [Sat, 1 Oct 2016 10:17:14 +0000 (12:17 +0200)]
It doesn't really make a lot of sense to have BURG nonterminal names different
to register classes, so combine them. Refactor the map code.
David Given [Fri, 30 Sep 2016 17:10:30 +0000 (19:10 +0200)]
Move fatal(), warning() and aprintf() into the new data module (because they're
really useful).
David Given [Thu, 29 Sep 2016 20:32:43 +0000 (22:32 +0200)]
More properly keep track of register classes.
David Given [Thu, 29 Sep 2016 20:14:11 +0000 (22:14 +0200)]
Error check fragment rules which don't emit anything.
David Given [Thu, 29 Sep 2016 20:06:04 +0000 (22:06 +0200)]
Much better handling of fragments (no run-time code needed to distinguish them
from registers) and better handling of individual hops within a paragraph ---
no more ghastly hacks to try and distinguish the input from the output.
David Given [Thu, 29 Sep 2016 17:58:02 +0000 (19:58 +0200)]
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.
David Given [Wed, 28 Sep 2016 21:39:00 +0000 (23:39 +0200)]
You can tell whether an item already exists in the array when calling
array_appendu() now.
David Given [Tue, 27 Sep 2016 21:38:47 +0000 (23:38 +0200)]
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.
David Given [Mon, 26 Sep 2016 22:19:45 +0000 (00:19 +0200)]
Fleshed out hops and vregs. The result is almost looking like code now ---
uncanny.
David Given [Mon, 26 Sep 2016 21:03:04 +0000 (23:03 +0200)]
Move map into the data module.
David Given [Mon, 26 Sep 2016 20:48:58 +0000 (22:48 +0200)]
Revamp the array module not to use nasty macros any more. Slightly more verbose
to use, but definitely cleaner.
David Given [Mon, 26 Sep 2016 20:24:49 +0000 (22:24 +0200)]
Move the array library into the data module.
David Given [Mon, 26 Sep 2016 20:12:46 +0000 (22:12 +0200)]
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.
David Given [Sun, 25 Sep 2016 21:29:59 +0000 (23:29 +0200)]
Start factoring out the hardware op code.
David Given [Sun, 25 Sep 2016 20:17:14 +0000 (22:17 +0200)]
Sort of keep track of registers and register classes. Start walking the
generated instruction tree --- holy cow, they look like instructions!
David Given [Sun, 25 Sep 2016 15:14:54 +0000 (17:14 +0200)]
Collapse several rule arrays into one; actually generate the array properly.
David Given [Sun, 25 Sep 2016 10:29:03 +0000 (12:29 +0200)]
Rename struct insn to struct em (throughout).
David Given [Sun, 25 Sep 2016 10:18:39 +0000 (12:18 +0200)]
Stupid stringlist is stupid. Use a proper data structure, properly abstracted
out (so other things can use it).
David Given [Sun, 25 Sep 2016 09:49:51 +0000 (11:49 +0200)]
Rethink the way patterns are mapped to rules; generate emitters (probably
badly).
David Given [Sat, 24 Sep 2016 22:21:46 +0000 (00:21 +0200)]
We now record the code fragments to be emitted by each rule.
David Given [Sat, 24 Sep 2016 20:50:53 +0000 (22:50 +0200)]
Instruction selection is so important the file needs a longer name.
David Given [Sat, 24 Sep 2016 20:46:08 +0000 (22:46 +0200)]
Some instruction selection is now happening.
David Given [Sat, 24 Sep 2016 17:03:55 +0000 (19:03 +0200)]
More grammar changes.
David Given [Sat, 24 Sep 2016 16:31:35 +0000 (18:31 +0200)]
IR codes are now owned by mcgg; ir terminals are inserted into the table during
compilation (so you can refer to them).
David Given [Sat, 24 Sep 2016 15:20:40 +0000 (17:20 +0200)]
Crudely bolt on mcgg to mcg itself.
David Given [Sat, 24 Sep 2016 14:59:49 +0000 (16:59 +0200)]
Parameters are parsed with getopt. Simplify, constify.
David Given [Sat, 24 Sep 2016 11:33:59 +0000 (13:33 +0200)]
Change the predicate stuff to use costs instead; now you can use when clauses
on leaves. Remove an iburg premature optimisation (required for above).
David Given [Sat, 24 Sep 2016 11:08:17 +0000 (13:08 +0200)]
Lots of exploratory new grammar for instruction definitions and string and
fragment emission (none of which is hooked up to anything yet).
David Given [Sat, 24 Sep 2016 10:11:30 +0000 (12:11 +0200)]
Add support for labelled tree nodes.
David Given [Fri, 23 Sep 2016 23:09:32 +0000 (01:09 +0200)]
Fix some late-night typo bugs.
David Given [Fri, 23 Sep 2016 23:04:00 +0000 (01:04 +0200)]
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.
David Given [Fri, 23 Sep 2016 21:59:15 +0000 (23:59 +0200)]
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.
David Given [Fri, 23 Sep 2016 19:07:16 +0000 (21:07 +0200)]
Each pass now lives in its own source file; much cleaner.
David Given [Thu, 22 Sep 2016 21:19:29 +0000 (23:19 +0200)]
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.
David Given [Wed, 21 Sep 2016 22:15:48 +0000 (00:15 +0200)]
Tracing cleanup. Simplified the IR code. Some more opcodes.
David Given [Tue, 20 Sep 2016 22:43:10 +0000 (00:43 +0200)]
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.
David Given [Tue, 20 Sep 2016 19:00:16 +0000 (21:00 +0200)]
Run through clang-format.
David Given [Tue, 20 Sep 2016 18:46:45 +0000 (20:46 +0200)]
Strip out surplus files. Rewrite README.
David Given [Tue, 20 Sep 2016 18:44:51 +0000 (20:44 +0200)]
Import iburg.
David Given [Tue, 20 Sep 2016 18:37:16 +0000 (20:37 +0200)]
Import iburg.
David Given [Mon, 19 Sep 2016 22:19:39 +0000 (00:19 +0200)]
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.
David Given [Mon, 19 Sep 2016 21:30:41 +0000 (23:30 +0200)]
Treebuilder now gets to the bottom of my test file, merrily generating
(probably horribly broken) IR.
David Given [Mon, 19 Sep 2016 21:06:59 +0000 (23:06 +0200)]
Store the EM code up front and build the basic block graph *before*
generating the IR code. Lots more IR code.
David Given [Sun, 18 Sep 2016 21:24:54 +0000 (23:24 +0200)]
Archival checking of the half-written IR treebuilder.
David Given [Sat, 17 Sep 2016 22:23:42 +0000 (00:23 +0200)]
ANSIise to fix warnings.
David Given [Sat, 17 Sep 2016 22:02:16 +0000 (00:02 +0200)]
Abstract out the EM reader; skeleton of the tree builder.
David Given [Sat, 17 Sep 2016 20:21:47 +0000 (22:21 +0200)]
Basic skeleton of em parser.
David Given [Sat, 10 Sep 2016 09:25:21 +0000 (11:25 +0200)]
Merge pull request #3 from kernigh/ego-fix
Fix bugs with memory allocation in ego.
George Koehler [Sat, 10 Sep 2016 03:37:43 +0000 (23:37 -0400)]
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.
David Given [Sun, 4 Sep 2016 17:23:02 +0000 (19:23 +0200)]
Add unlink system call.
David Given [Sat, 3 Sep 2016 17:22:38 +0000 (19:22 +0200)]
Cleanup some stray files.
David Given [Sat, 3 Sep 2016 17:17:09 +0000 (19:17 +0200)]
Add modeline, fix formatting.
David Given [Sat, 3 Sep 2016 17:07:12 +0000 (19:07 +0200)]
Updated.
David Given [Sat, 3 Sep 2016 17:01:47 +0000 (19:01 +0200)]
More documentation.
David Given [Fri, 2 Sep 2016 23:04:16 +0000 (01:04 +0200)]
First half of the ackbuilder documentation.
David Given [Fri, 2 Sep 2016 22:20:11 +0000 (00:20 +0200)]
Makefiles are now slightly less inaccurate. Does actually seem to do sensible
incremental builds now. I loathe make.
David Given [Fri, 2 Sep 2016 21:03:57 +0000 (23:03 +0200)]
Add an install target.
David Given [Fri, 2 Sep 2016 21:00:38 +0000 (23:00 +0200)]
Distributions are a pain --- let's not bother any more. Instead, we just tag
the repository and download a complete snapshot, old and ancient stuff and all.
David Given [Fri, 2 Sep 2016 20:17:51 +0000 (22:17 +0200)]
Remove the old make-based build system, plus some big chunks of horribly
obsolete protomake build system.
David Given [Thu, 1 Sep 2016 21:36:39 +0000 (23:36 +0200)]
Clean up the top level makefile.
David Given [Mon, 22 Aug 2016 21:53:01 +0000 (23:53 +0200)]
Fix a fun bug where, every now again, ego would get its temporary files mangled
and generate invalid calls to the optimisers.
Previously ego would generate a temporary file template that looked like
/tmp/ego.A.BB.XXXXXX, call mktemp() on it to randomise the XXXXXX, and then
replace A and BB with data.
However, it used strrchr to find the A and B. Which would fine, except when
mktemp produced an A or a B in the randomised part...
This code was written on 4 March 1991. I was 16.
David Given [Mon, 22 Aug 2016 20:45:32 +0000 (22:45 +0200)]
Forgot to check a file in.
David Given [Sun, 21 Aug 2016 20:01:19 +0000 (22:01 +0200)]
ego now builds and is used.
This needed lots of refactoring to ego --- not all platforms have ego descr
files, and ego will just crash if you invoke it without one. I think originally
it was never intended that these platforms would be used at -O2 or above.
Plats now only specify the ego descr file if they have one.
David Given [Sun, 21 Aug 2016 19:55:21 +0000 (21:55 +0200)]
filenamesof() an installable now returns all installed files, not just the ones
at the top level (necessary to make a lot of the dependency stuff work when
using tools which depend on installables).
David Given [Sun, 21 Aug 2016 18:27:52 +0000 (20:27 +0200)]
Fix linking bug where em_decode would generate binary data instead of text.
David Given [Sun, 21 Aug 2016 18:08:05 +0000 (20:08 +0200)]
Run through clang-format.
David Given [Sun, 21 Aug 2016 17:53:14 +0000 (19:53 +0200)]
Run through clang-format.
David Given [Sun, 21 Aug 2016 17:46:19 +0000 (19:46 +0200)]
Run through clang-format.
David Given [Sun, 21 Aug 2016 17:38:54 +0000 (19:38 +0200)]
Run through clang-format.
David Given [Sun, 21 Aug 2016 17:38:02 +0000 (19:38 +0200)]
Run through clang-format.
David Given [Sun, 21 Aug 2016 17:34:54 +0000 (19:34 +0200)]
Push through clang-format.
David Given [Sun, 21 Aug 2016 16:51:36 +0000 (18:51 +0200)]
Run through clang-format.
David Given [Sun, 21 Aug 2016 16:45:25 +0000 (18:45 +0200)]
Push em_ego.c through clang-format before working on it.
David Given [Sat, 20 Aug 2016 12:05:24 +0000 (14:05 +0200)]
Build the examples when doing a normal build; this exercises the compiler as a
whole and is one step further towards a proper test suite.
David Given [Sat, 20 Aug 2016 12:04:46 +0000 (14:04 +0200)]
aal doesn't build the ranlib table if you don't set -DAAL.
David Given [Sat, 20 Aug 2016 12:04:17 +0000 (14:04 +0200)]
Add files which got missed in the initial build pass.
David Given [Sat, 20 Aug 2016 12:03:49 +0000 (14:03 +0200)]
liblinux is no more; its files are now in libsys.
David Given [Sat, 20 Aug 2016 12:03:19 +0000 (14:03 +0200)]
rpi has a time() function; don't try to call gettimeofday().
David Given [Sat, 20 Aug 2016 12:02:12 +0000 (14:02 +0200)]
Print hex numbers actually properly this time.
David Given [Sat, 20 Aug 2016 10:40:13 +0000 (12:40 +0200)]
Raspberry Pi backend now builds.
David Given [Sat, 20 Aug 2016 10:40:00 +0000 (12:40 +0200)]
Wildcards are allowed to match no files now.
David Given [Sun, 14 Aug 2016 22:47:08 +0000 (00:47 +0200)]
Filename variables now get passed into ackbuilder on the command line.
David Given [Sun, 14 Aug 2016 22:46:43 +0000 (00:46 +0200)]
Fix dependency error (only shows up with make, not ninja. Odd).
David Given [Sun, 14 Aug 2016 21:01:12 +0000 (23:01 +0200)]
Fix compiler warnings and 64bitisms.