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Author SHA1 Message Date
Bill Currie
a91f4cedeb Add the @nil keyword. 
@nil is exactly the same as nil, but it is always available.
 2012-11-27 18:33:42 +09:00
Bill Currie
edeffd64e9 Fix a missed obj_module_s/_t from the class cleanup. 
Doesn't seem to have caused any problems, but still :)
 2012-11-27 18:33:42 +09:00
Bill Currie
026a992179 Add a test case for the alias chain mangling. 
I think I need to rework the tests to better handle compile-only tests.
 2012-11-27 18:33:41 +09:00
Bill Currie
31b07bcbbf Rewrite expr_alias(). 
Modifying the existing alias chain proved to be a bad idea (in retrospect,
I should have known better:P). Instead, just walk down any existing alias
chain to the root operand and build a new alias from that.
 2012-11-27 18:33:41 +09:00
Bill Currie
215ff61216 Add a test for the dead boolean expression. 
This tests the zombie label problem found via ctf.
 2012-11-26 21:05:24 +09:00
Bill Currie
d6b38dd0ee Add an option to control expr tree dumping. 
About bloody time :P
 2012-11-26 21:00:28 +09:00
Bill Currie
e28aa0a5fb Fix some errors in the set code. 
I really need to write some unit tests for the set code, but with this (and
an uncommitted dags patch (still thinking about it)) ctf compiles.
 2012-11-26 17:19:02 +09:00
Bill Currie
8e225cd726 Fix a missing label use count decrement. 
if statements in dead code weren't being removed due to the label.
 2012-11-26 16:13:59 +09:00
Bill Currie
24847857ef Fix some whitespace. 2012-11-26 16:13:40 +09:00
Bill Currie
128547b885 Resurrect the "next" pointers for labels and conditionals. 2012-11-26 16:09:53 +09:00
Bill Currie
f7417345ba Rewrite print_bool to be more informative. 2012-11-26 15:47:10 +09:00
Bill Currie
147d00d41f Rewrite print_block making it more informative. 2012-11-26 15:04:33 +09:00
Bill Currie
ce1d89ba50 Replace some of the quotes around node names. 
Null expression pointers can show up unexpectedly, and printf's (null)
messes up dot.
 2012-11-26 14:18:23 +09:00
Bill Currie
578ad07487 Fix yet another empty block issue. 
I think I need to rework all the code in there, but this will do for now.
 2012-11-25 15:01:36 +09:00
Bill Currie
f6e5428382 Don't create default_expr unless needed. 
The goto for the default expression is the source of the mis-counted label
users: the label was being counted by the goto, but the goto was never
being inserted into the code (only v6 progs or "difficult" types insert the
goto).
 2012-11-24 21:53:00 +09:00
Bill Currie
d0e56c91cc Detect non-initial nodes with no predecessors. 
Such nodes are unreachable code (ie, dead blocks), but the dead block
removal code failed to remove them (current known cause: miscounted label
userrs). As such blocks cause problems for data flow analysis, ignoring
them is not a good idea. Thus make them an internal error.
 2012-11-24 21:39:02 +09:00
Bill Currie
4f8b3b5692 More empty block checks. 2012-11-24 19:06:10 +09:00
Bill Currie
6e7aaac1b9 Fix the wording of a comment. 2012-11-24 19:06:01 +09:00
Bill Currie
b68401e552 Produce a debug print when using jump tables. 2012-11-24 17:55:57 +09:00
Bill Currie
4c1dc568e0 Cop out on uninitialized large variables. 
vectors, quaternions and structs are a little tricky. I need to think about
how to get them working, but I also want qfcc to get through as much code
as possible.
 2012-11-24 16:49:46 +09:00
Bill Currie
40c97f9570 Tread immediate move statements similarly to assignments. 
They're used for structure assignment in near data space. This fixes the
bogus uninitialized warnings on fully initialized structs.
 2012-11-24 16:47:44 +09:00
Bill Currie
7f229b7682 Remove execessive html quoting. 
Heh, I must have put that in long before I did the quoting functions.
 2012-11-24 15:42:21 +09:00
Bill Currie
dbbca47a3b Mark initialized struct/array defs as initalized. 
Also, use the initialized flag for setting up the initalized var set in
flow_uninitialized().
 2012-11-24 15:26:27 +09:00
Bill Currie
f4604d9db5 Remove gotos that go to the following statement. 
eg:
	goto foo:
foo:
	//some code
 2012-11-24 15:08:48 +09:00
Bill Currie
738fc65e0f Treat global vars as always live. 
This fixes the infloop.r test.
 2012-11-24 14:56:30 +09:00
Bill Currie
2478b053de Add a test for writes to global vars in a loop. 2012-11-24 14:53:45 +09:00
Bill Currie
bdafdad0d5 Treat flow control statements separately. 
I'm not convinced this is the correct fix for while (count--), but it does
work.
 2012-11-24 12:53:51 +09:00
Bill Currie
bc26cd24c8 Make structptr.r a little quieter. 2012-11-22 21:59:01 +09:00
Bill Currie
607d7dd45e Simplify the child match in dagnode_match. 
I have no idea why I did it that way when all that's needed is to check the
child pointers. Well, that's modulo.r fixed :)
 2012-11-22 21:59:01 +09:00
Bill Currie
64d9bbd230 Make the failure message clearer. 2012-11-22 21:59:01 +09:00
Bill Currie
b920a4dec9 Add a new test case. 
It turns out that the optimizer completely breaks (a + b) % (a - b) with v6
code.
 2012-11-22 21:59:01 +09:00
Bill Currie
47decd58d0 Support testing v6 progs. 
v6 progs return float rather than int (they don't have int).
 2012-11-22 21:59:01 +09:00
Bill Currie
eef399209d Add some very evil pragmas. 
The evil comment is not just "pragmas are bad, ok?", but switching between
advanced, extended and tradtitional modes when compiling truly is evil and
not guaranteed to work. However, I needed it to make building test cases
easier (it's mostly ok to go from advanced to extended or tradtional, but
going the other way will probably cause all sorts of fun).

In the process, opcode_init now copies the opcode table data rather than
modifying it.
 2012-11-22 21:59:01 +09:00
Bill Currie
538879b451 Get automatic dependencies working for the progs files. 
Including dependencies on QFCC itself :)
 2012-11-22 21:59:01 +09:00
Bill Currie
92d2b4107c Make the --developer and --trace options work. 2012-11-22 21:59:01 +09:00
Bill Currie
a5a7780a21 Fix make dist for qfcc's test. 2012-11-22 21:59:01 +09:00
Bill Currie
99b34232f8 Add a test harness for qfcc. 
It's only the beginning, but finally make check is useful for qfcc :)
It even has a failing test :D
 2012-11-22 21:59:01 +09:00
Bill Currie
eb8dfd78d0 Fix a comment. 
The information I most wanted wasn't there :P
 2012-11-22 21:59:00 +09:00
Bill Currie
95bd4ad410 Add a test for while (count--) 2012-11-22 21:59:00 +09:00
Bill Currie
49ca09a64f Clean up qfcc's test directory. 
I don't remember what half these tests were for :/
 2012-11-22 21:58:52 +09:00
Bill Currie
4b5e00afdf Do a bunch of refactoring. 
The dag creation loop was getting too messy.
 2012-11-21 18:30:44 +09:00
Bill Currie
c5f2e3c4ad Make dag dumping from gdb easier. 2012-11-21 15:03:44 +09:00
Bill Currie
bedde02307 Make flow graphs with dags easier to read. 
The node contents are now the dag rather than the dag being attached to the
node.
 2012-11-21 13:43:03 +09:00
Bill Currie
c759b73b24 Cope with empty sblocks when producing dot graphs. 2012-11-21 12:23:15 +09:00
Bill Currie
2c09464e80 Don't attach a dag label to its own node. 
This kills a = a; statements :)
 2012-11-21 12:16:10 +09:00
Bill Currie
0583dc82d3 Treat uninitialized temps as a bug. 
It really should be impossible, but I'm not sure where the bug is yet
(though there are uninitialized variables that are false positives that
most definitely are initialized, might be related)
 2012-11-21 10:26:41 +09:00
Bill Currie
2aaa380098 Fix some uninitialized variable warnings. 
While they're false positives (qfcc doesn't know about noreturn), at least
qfcc is doing its job :)
 2012-11-21 10:25:29 +09:00
Bill Currie
86968f662e Store the function type in function values. 
This fixes IMP msg = nil;
 2012-11-21 10:06:15 +09:00
Bill Currie
686937123c Ensure flowvars always point to the var itself. 
Pointing to aliases of the var causes all sorts of problems, but this time
it was causing the uninitialized variable detector to miss certain
parameters.
 2012-11-21 09:43:59 +09:00
Bill Currie
0dc306c4b7 Fix the initialized var data flow. 
Now most false positives have been fixed. Just some problems with aliased
vars (next) and then the usual false positives caused by branches.
 2012-11-21 09:42:02 +09:00