Bill Currie
f9e177efd6
Obtain the label to be removed from the correct place.
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This fixes the undetected dead block after "if return else return".
2011-03-03 17:50:46 +09:00
Bill Currie
ed901bd48f
Drop unused labels rather than adding them to the statement block.
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However, even unused labels create a new statement block if necessary.
2011-03-03 17:35:06 +09:00
Bill Currie
c5ecc170b6
Give labels a usage count to detect unused labels.
2011-03-03 15:28:49 +09:00
Bill Currie
d937172243
Create and use alias operands for alias expressions.
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This avoids the alias expression modifying the operand used in other
expressions.
2011-03-03 13:46:07 +09:00
Bill Currie
022fde666f
Implement unary expression statements.
2011-03-03 13:10:07 +09:00
Bill Currie
45de7327dc
Implement alias expressions (finally).
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Alias expressions are like cast expressions, but never do any conversions.
2011-03-03 11:06:10 +09:00
Bill Currie
497db3ac81
Fix the return symbol extraction when appending a return statement.
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The code is still icky, though :P
2011-02-22 09:20:52 +09:00
Bill Currie
bcaf3687c5
Fix loading structs into params via an offset pointer.
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For certain values of "fix" :/. The code is ugly, but it does the right
thing: calculate the effect address and use the resulting pointer in a
move instruction.
2011-02-14 23:10:45 +09:00
Bill Currie
179c1f7058
Support move statements (structure copy).
2011-02-11 22:29:57 +09:00
Bill Currie
370f0b97ed
Produce cleaner output for a = b op c.
2011-02-11 22:29:57 +09:00
Bill Currie
d93d8d7d46
Remove the dirty hack used for accessing params and the return value.
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Instead of using the equivalent of *(float*)&.return, now use the
equivalent of (float).return. No conversion is done in the "cast".
NOTE: this sort of cast should be separated from normal casts.
2011-02-11 22:29:38 +09:00
Bill Currie
7d2a95ee40
Mark a few problem spots.
2011-02-11 22:29:37 +09:00
Bill Currie
6f625e426f
Use the correct type when deferencing an offset pointer.
2011-02-10 14:26:12 +09:00
Bill Currie
006c16807d
Add the statement for based loads.
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Oops :P
2011-02-09 22:40:16 +09:00
Bill Currie
0d5ab6600d
Store the source expression in a statement.
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This makes problem reporting more informative.
2011-02-08 18:18:34 +09:00
Bill Currie
3c849b970b
Handle union access now that they're detected properly.
2011-02-08 14:45:48 +09:00
Bill Currie
3b080fcbb0
Fix an uninitialized variable.
2011-02-08 13:27:37 +09:00
Bill Currie
65a07ada1c
Implement offset dereferences.
2011-02-07 14:56:29 +09:00
Bill Currie
d2b464053c
Fix assignment sub-expressions.
2011-02-07 14:43:07 +09:00
Bill Currie
ef2ad46f7a
Convert complex types to a suitable low-level type.
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This takes care of moving structures etc around.
2011-02-07 10:55:09 +09:00
Bill Currie
b629c12b31
Do not change the type of the return operand.
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Doing so made a mess of returning expressions. It was probably a holdover
from before getting instructions with void operand types working.
2011-02-07 10:21:54 +09:00
Bill Currie
e4ac92b5f2
Auto-cast between enums and the default type.
2011-02-06 20:08:16 +09:00
Bill Currie
c53001800a
Create a struct for representing specifiers.
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The specifiers are yet to come (next few commits), but this will be
necessary when they do.
2011-02-01 21:15:51 +09:00
Bill Currie
e7424e1496
Don't segfault on bare return statements.
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I will probably need to do something about the required operand for v6
progs, but this will do for now.
2011-01-30 21:43:56 +09:00
Bill Currie
834417b8c8
Add "debug" diagnotic printing, and use it.
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Debug diagnostics are silent for verbosity levels less than 1.
2011-01-28 13:28:45 +09:00
Bill Currie
a37bdd9fb5
Free removed sblocks.
2011-01-28 13:23:20 +09:00
Bill Currie
80424f6ad5
Ensure functions are always properly terminated.
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Control that reaches the end of a function must see a return statement.
2011-01-28 13:14:30 +09:00
Bill Currie
9159daf99d
Do simple unreachable block analysis and dead block removal.
2011-01-28 11:45:04 +09:00
Bill Currie
90a2738459
Add the label to the block to which it refers.
2011-01-28 11:41:53 +09:00
Bill Currie
4738c767a2
Fix branch label handling.
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Conditional branches and goto now go to the correct location.
2011-01-27 21:11:32 +09:00
Bill Currie
71b5decbe8
Get assignments to .return working.
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I really do not like the mechanism I currently use for handling pointer
derefences vs pointer assignments, but this will have to do for now until
I can get qfcc producing code again.
2011-01-27 15:44:11 +09:00
Bill Currie
56106892c8
The & operator produces a pointer, not void.
2011-01-27 15:44:10 +09:00
Bill Currie
6ce3c5a59a
Get statments being emitted to the code segment.
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The first function seems to work fine, but there's a problems with the
scope of params causing params to get their knickers in a twist (tangled
linked list).
2011-01-25 15:46:48 +09:00
Bill Currie
fd3b594ca5
Move label relocs to the relevant statement block.
2011-01-25 15:45:31 +09:00
Bill Currie
0624408317
Move the diagnostic functions into their own file.
2011-01-24 21:54:57 +09:00
Bill Currie
d618e51dc8
Move save_string and make_string into strpool
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Might not be the perfect place, but at least they're strongly related.
2011-01-24 21:32:48 +09:00
Bill Currie
a79b6f0a6c
Partially implement casts.
2011-01-23 11:53:08 +09:00
Bill Currie
55d3d17807
Add a missing break.
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"return" falling through to "goto" was bad news :)
2011-01-22 15:52:01 +09:00
Bill Currie
3b462e16cf
Produce flow diagrams of the basic blocks.
2011-01-22 11:40:53 +09:00
Bill Currie
bcb2667b73
Possibly get vector calls working.
2011-01-21 19:40:46 +09:00
Bill Currie
52b561f7cb
Nuke bind expressions.
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Since I'm planning on implementing CSE and other optimizations, they're
rather redundant (and I'm having trouble getting them to work).
2011-01-21 19:07:58 +09:00
Bill Currie
977c48d728
Make operator type overrides clear.
2011-01-21 15:57:53 +09:00
Bill Currie
aec9f256a7
Get calls mostly working.
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Bind seems to be broken, but parameters seem to be being set correctly.
2011-01-21 15:54:53 +09:00
Bill Currie
96fae582e3
Implement bind expressions.
2011-01-21 11:27:40 +09:00
Bill Currie
4a24393d8d
Temp expressions now use operands instead of defs.
2011-01-21 11:26:43 +09:00
Bill Currie
2998e578fb
Get very basic deref assignments working.
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More complicated expressions will not work yet.
2011-01-21 10:59:16 +09:00
Bill Currie
ff6e2584da
Handle block sub-expressions that produce results.
2011-01-21 10:57:47 +09:00
Bill Currie
16e013ff5d
Allow the operand to override the symbol's type.
2011-01-21 10:56:32 +09:00
Bill Currie
3f2793ef72
Get a lot of statements being generated.
2011-01-20 23:26:13 +09:00
Bill Currie
e45ea4b2ae
Move the statement printing near the top of the file.
2011-01-20 18:07:24 +09:00
Bill Currie
0594609b3a
Get the label from the right expression.
2011-01-19 22:25:43 +09:00
Bill Currie
5deda9c9b9
Clean out ex_def as ex_symbol replaces it.
2011-01-19 22:25:04 +09:00
Bill Currie
b5424bca7d
Start work on getting expressions converted to internal statements.
2011-01-19 15:47:45 +09:00
