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Author SHA1 Message Date
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 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 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
David Given 56e13e24e0 Cleanup some stray files. 2016-09-03 19:22:38 +02:00
David Given 1b8df04e58 Add modeline, fix formatting. 2016-09-03 19:17:09 +02:00
David Given 95ad06849b Updated. 2016-09-03 19:07:12 +02:00
David Given de2f99dc1a More documentation. 2016-09-03 19:01:47 +02:00
David Given ea4142daee First half of the ackbuilder documentation. 2016-09-03 01:04:16 +02:00
David Given ff9bf5b08a Makefiles are now slightly less inaccurate. Does actually seem to do sensible 
incremental builds now. I loathe make.
 2016-09-03 00:20:11 +02:00
David Given de7023dd61 Add an install target. 2016-09-02 23:03:57 +02:00
David Given f67c98e239 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.
 2016-09-02 23:00:38 +02:00
David Given 612e38f1c6 Remove the old make-based build system, plus some big chunks of horribly 
obsolete protomake build system.
 2016-09-02 22:17:51 +02:00
David Given 96e7447bfa Clean up the top level makefile. 2016-09-01 23:36:39 +02:00
David Given 2b6d251dec 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.
 2016-08-22 23:53:01 +02:00
David Given 2a95b1c5e3 Forgot to check a file in. 2016-08-22 22:45:32 +02:00
David Given 5bae29a00c 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.
 2016-08-21 22:01:19 +02:00
David Given 08823a172c 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).
 2016-08-21 21:55:21 +02:00
David Given 84ee7c9cc4 Fix linking bug where em_decode would generate binary data instead of text. 2016-08-21 20:27:52 +02:00
David Given 2b2bd93e44 Run through clang-format. 2016-08-21 20:08:05 +02:00
David Given 44b6421519 Run through clang-format. 2016-08-21 19:53:14 +02:00
David Given 671bf250f5 Run through clang-format. 2016-08-21 19:46:19 +02:00
David Given 918f300513 Run through clang-format. 2016-08-21 19:38:54 +02:00
David Given 1b66b63eae Run through clang-format. 2016-08-21 19:38:02 +02:00
David Given 3584ddb6e9 Push through clang-format. 2016-08-21 19:34:54 +02:00
David Given a4f136f999 Run through clang-format. 2016-08-21 18:51:36 +02:00
David Given 03a0b182c4 Push em_ego.c through clang-format before working on it. 2016-08-21 18:45:25 +02:00
David Given 1a7b4f8729 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.
 2016-08-20 14:05:24 +02:00
David Given 53c9731036 aal doesn't build the ranlib table if you don't set -DAAL. 2016-08-20 14:04:46 +02:00
David Given 856eb120b3 Add files which got missed in the initial build pass. 2016-08-20 14:04:17 +02:00
David Given edee22510b liblinux is no more; its files are now in libsys. 2016-08-20 14:03:49 +02:00
David Given 52eaf753b6 rpi has a time() function; don't try to call gettimeofday(). 2016-08-20 14:03:19 +02:00
David Given f561b94b49 Print hex numbers actually properly this time. 2016-08-20 14:02:12 +02:00
David Given 204f932ed2 Raspberry Pi backend now builds. 2016-08-20 12:40:13 +02:00
David Given 23e8d5af5a Wildcards are allowed to match no files now. 2016-08-20 12:40:00 +02:00