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Author SHA1 Message Date
Bill Currie
8ac2c3a04d Check for unused enum values in switch statements. 
Unfortunately, it turns out the value lookup is broken (including for
duplicate cases).
 2013-06-26 09:25:45 +09:00
Bill Currie
35bc981402 Allow use of a jump table when switching on an enum. 2013-06-26 09:25:45 +09:00
Bill Currie
64f76bd762 Use the right value when getting a function's defref. 
Either I had gotten confused while writing the code and mixed up line and
offset, or I had changed offset to line at one stage but missed a place.
This fixes the segfault when compiling chewed-alias.r and return-ivar.r
 2013-06-24 09:16:55 +09:00
Bill Currie
ca0b03687f Change the naming of ALLOC's free-list. 
Rather than prefixing free_ to the supplied name, suffix _freelist to the
supplied name. The biggest advantage of this is it allows the free-list to
be a structure member. It also cleans up the name-space a little.
 2013-03-08 22:16:31 +09:00
Bill Currie
9d418379bf Use the correct type when allocating flow node edges. 
sizeof (struct) vs sizeof (struct *). Ouch.
 2013-01-30 18:08:59 +09:00
Bill Currie
6a3c775270 Correct the emission of meta class ivars. 
type_obj_class is no longer a class, so its ivars are not stored in
type_obj_class.t.class->ivars but rather type_obj_class.t.symtab.

This fixes the segfault Spirit and Randy were experiencing.

In passing, correct the unneeded emission of meta class ivars for non-root
classes. This should make for much smaller progs that use classes.
 2013-01-30 18:06:48 +09:00
Bill Currie
e27d7cbd2d Handle alloca "correctly". 
Use AC_FUNC_ALLOCA and the #ifdef mess suggested by the autoconf docs
(hidden in qfalloca.h).
 2013-01-22 21:02:50 +09:00
Bill Currie
f1aefc969d Fix some 64-bit mingw compile issues. 
Just one more issue to fix (alloca), but with a hack, QF compiles (no clue
yet if it works: wine doesn't seem to be an option at this stage)
 2013-01-22 21:02:49 +09:00
Bill Currie
0186ca993d Allow the uninitialized variable warning to be suppressed. 2013-01-18 16:28:08 +09:00
Bill Currie
eacc59c016 Build the field types array for enums, too. 
However, every element is the same: type_default's type_def. This fixes the
segfault building qwaq introduced by the previous enum commit.
 2013-01-17 22:01:31 +09:00
Bill Currie
46d2959908 Delay calling find_type for enums. 
As find_type encodes the type too, calling find_type before the enumerators
have been created causes the type encoding to lose the enumerators.
 2013-01-17 20:55:25 +09:00
Bill Currie
7a504f8983 Use float for enum defs in v6 progs. 
The values are (or should be!) written as floats, so don't give any
debuggers hernias when displaying enums in v6 progs.
 2013-01-17 20:53:22 +09:00
Bill Currie
00192ea1da Skip field immediates when generating progdefs.h 
They break the very fragile algorithm :P.
 2013-01-17 16:10:17 +09:00
Bill Currie
89ae5cbf7c Remove the old hacks for qp-lex, too. 2013-01-10 19:42:34 +09:00
Bill Currie
737347b0f6 Remove the prototypes hack. 
While configure isn't testing yet, we need recent bison and flex, so many
of the old hacks are no longer necessary.
 2013-01-10 19:27:22 +09:00
Bill Currie
39ae720613 Fix an error in qfcc's man page. 
--qccx-escapes doesn't take an arguement :P
 2013-01-08 16:19:40 +09:00
Bill Currie
76a69d9a53 Implement fteqcc's "nosave" specifier. 
Of course, it's "@nosave" for traditional progs, but that's only a define
away.
 2013-01-07 14:35:34 +09:00
Bill Currie
955e3ee258 Initialize the type to be ev_func. 
This fixes the returning of the wrong function symbol when resolving
overloaded functions and one of the functions takes no parameters.
 2013-01-07 13:52:48 +09:00
Bill Currie
338bb9bba0 Look up the function symbol when resolving overloaded functions. 
This fixes the bogus undefined symbol errors when resolving unambigous
overloaded functions.
 2013-01-07 13:51:01 +09:00
Bill Currie
e0e69ac71a Fix some signed/unsigned comparison warnings. 
It seems mingw's gcc treats pointer subtraction differently to how linux's
gcc does.
 2013-01-05 17:52:48 +09:00
Bill Currie
34c0c82408 Add support for binary constants using the 0b prefix. 
Just because :P (now that gcc support it, it seems worthwhile, I guess)
 2013-01-04 19:32:04 +09:00
Bill Currie
b225879d16 Print all four sets with a legent for live vars. 
Much more informative :)
 2012-12-26 11:54:49 +09:00
Bill Currie
c5179c9e99 Add MOVEP's opc to the use set. 
MOVEP's opc itself is always known and used, whether it's a constant
pointer or variable doesn't matter. This fixes the lost pointer calculation
for va_list.list[j] = object_from_plist (item);
 2012-12-26 11:53:06 +09:00
Bill Currie
412fb4aacd Fix a static out of bounds error. 
I really must compile with optimizations more often :P
 2012-12-26 11:51:40 +09:00
Bill Currie
88c765e210 Add a test for returning @param into an array. 2012-12-26 11:49:39 +09:00
Bill Currie
386a729209 Remove dead nodes from dags. 
Dead nodes are those that generate unused values (unassigned leaf nodes,
expressions or destinationless move(p) nodes). The revoval is done by the
flow analysis code (via the dags code) so that any pre and post removal
flow analysis and manipulation may be done (eg, available expressions).
 2012-12-25 17:07:58 +09:00
Bill Currie
1e3154ecd5 Do not always reset current_storage. 
resetting current_storage in external_def_list's empty rule breaks the
block storage scopes (extern { ... } etc);
 2012-12-25 13:43:52 +09:00
Bill Currie
e414117fe8 Move jump threading into the dead-code removal loop. 
Dead code removal can give more opportunities to the useless branch removal
in the jump threading code.
 2012-12-25 13:33:31 +09:00
Bill Currie
07187cae7c Remove useless conditional branches too. 
"if x" jumping to the next statement is pretty useless.
 2012-12-25 13:23:14 +09:00
Bill Currie
92fffb3c7e Check for a flow var for temp aliases. 2012-12-25 13:22:31 +09:00
Bill Currie
9d27764576 Use new_binary_expr to recreate the assignment. 
assign_expr mangles the destination expression for dereferenced
assignments into something that is invalid as an lvalue, so simply use
new_binary_expr with the same opcode.
 2012-12-24 20:12:56 +09:00
Bill Currie
0fc8aa54e1 Make expr->next edges constrained. 
It turns out expression trees are (mostly?) valid DAGs, so all edges being
constrained works, though the graphs get a little tall (but easier to read).
 2012-12-24 20:06:38 +09:00
Bill Currie
79519bc357 Avoid testing block expressions in truth assignments. 
This fixes the infinite loop in if ((x = self.heat && x))

Really, I think I need to revisit the whole expression tree code. It's
proving to be rather fragile.
 2012-12-24 20:01:16 +09:00
Bill Currie
60af059b6e Allow arbitrary expressions in a bool's block. 
This generates correct code for "if ((x = y))": the assignment still
occurs.
 2012-12-23 19:57:39 +09:00
Bill Currie
f6c4e06183 Reimplement assignment as truth value. 
The source of the assignment is used as the value to test, and the
assignment itself is inserted into the boolean expressions's block. This
fixes the inernal error for "if ((x = 0))".
 2012-12-23 19:53:31 +09:00
Bill Currie
a881fb5f5b Make float values obvious in expression dot dumps. 2012-12-23 19:34:25 +09:00
Bill Currie
f65ce22ddc Fold constants for the return value of test_expr. 
More constantness preservation.
 2012-12-23 19:32:32 +09:00
Bill Currie
22db05dc9c Alias value expressions by aliasing the value. 
This keeps constant expressions constant, even through aliasing.
 2012-12-23 19:31:09 +09:00
Bill Currie
b295524385 Add new_value_expr(). 
This simplifies creating a new expression for an arbitrary value object.
 2012-12-23 19:29:50 +09:00
Bill Currie
42ba0c9d54 Add alias_value() function. 
alias_value returns a new value where only the type is different, the
bit-pattern of the value itself is untouched.
 2012-12-23 19:25:35 +09:00
Bill Currie
82ded2b638 Split the test for assignment and parenthesis. 
This will make it easier to fix the internal error for "if (x = 0)".
 2012-12-23 14:55:16 +09:00
Bill Currie
b9a0e2ce03 Catch the error for undefined++. 2012-12-23 14:47:29 +09:00
Bill Currie
a778d45ebf Drop non-function symbols returned from function_symbol. 
In such situations, everything is a mess from earlier errors.
 2012-12-23 14:25:09 +09:00
Bill Currie
aae0e21a5b Treat class instance access as a normal error. 
Normally, it will happen only as a follow-on error, but I can think of a
way to force it without other errors, so treating it as an internal error
is a bit harsh.
 2012-12-23 06:01:20 +09:00
Bill Currie
996b2734a4 Reset current_class in the top-level error rules. 
This fixes a weird internal error after a parse error in an ivar
declaration.
 2012-12-23 05:57:13 +09:00
Bill Currie
1c76ccc425 Always set current_symtab in class_init(). 
But reset current_symtab to its prior value when done. This fixes a
segfault caused by initializing the class system while parsing a struct
(eg, one of the members is of type id).
 2012-12-22 20:06:14 +09:00
Bill Currie
ff4b232d92 Reset current_storage when resetting current_symtab. 
This helps prevent an internal error caused by ealier errors.
 2012-12-22 20:04:11 +09:00
Bill Currie
85387e02cf Avoid class segfaults caused by parse errors. 2012-12-22 19:35:19 +09:00
Bill Currie
681bd6f4b2 Don't try to emit code if there have been errors. 
The expression tree can't really be trusted if there have been errors.
While warnings as errors are another matter, it's not worth sorting out.
 2012-12-22 19:22:08 +09:00
Bill Currie
adf3e36aee Get the tempop alias's type from the right place. 
Temporyary aliases use only the low-level type, not the full type
descriptor. Fixes the segfault when dumping dot graphs.
 2012-12-22 17:06:00 +09:00