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3308 Commits

Author SHA1 Message Date
acqn
de630a1245 Fixed quick hack for known registers after calling certain runtime functions, 
and new quick hack for tosshrax.
 2020-09-18 09:04:15 +02:00
acqn
079f4a99dd Added processor state info to the OPCDesc table. However, since some opcodes are affected by the addressing mode, this info is unused in codegen/optimizer but just as quick in-code documentation/hints. 2020-09-18 09:04:15 +02:00
acqn
a7d6eb9190 Added processor flag usage/change-tracking for non-JSR/RTS code entries. 
Some existing optimizations are impacted and need fixes in order to work correctly again.
Fixed and improved OptPrecalc. Now it respects the C/V/Z/N flags.
Fixed optimizations impacted by added support of tracking processor flags.
 2020-09-18 09:04:15 +02:00
acqn
d02b12fa6c Made local code/data labels really local to the functions where they live in. 2020-09-18 09:02:16 +02:00
acqn
86ced2bd4c Avoided unnecessarily boosting the code label numbers with boolean AND. 2020-09-18 08:59:56 +02:00
acqn
b8ae5c28fe Added debug output support for processor flags. 2020-09-13 13:50:35 +02:00
acqn
810e17edfe Fixed processor states tracking for the BIT/TRB/TSB opcode. 
Added new opcode descriptions about whether and how the opcode accesses memory.
 2020-09-13 13:50:35 +02:00
acqn
66c5faeb9a Added processor flags usage tracking. 
Added ZNRegs for tracking what register(s) Z/N flags currently reflect.
Added utility functions to check if the specified processor state is known to be a certain value.
 2020-09-13 13:50:35 +02:00
acqn
fe3f267233 Added new runtime sub bcasta/bcastax/bcasteax opposing to bnega/bnegax/bnegeax. 2020-09-11 13:33:54 +02:00
acqn
142b0bf9b3 Added utility functions to get names of comparison function/transformer subroutines. 2020-09-11 13:33:54 +02:00
acqn
ab7e9f8424 Hotfix for Issue #1250. 2020-09-08 16:28:21 +02:00
Jesse Rosenstock
4e4e4c2d21 Allow char bit-fields 
These are not required to be supported (only int, signed int, and
unsigned int are required), but most compilers support it.

https://port70.net/~nsz/c/c89/c89-draft.html#3.5.2.1
https://port70.net/~nsz/c/c89/c89-draft.html#A.6.5.8

For consistency with other integral types, plain `char` bit-fields
are unsigned, regardless of the `--signed-chars` option.

Fixes #1047
 2020-09-08 14:24:04 +02:00
acqn
41cee0eb44 Extended support for more addressing modes in tos* optimizations. 2020-09-08 14:19:48 +02:00
acqn
7553b60ef0 Improved OptStackOps for optimizating further when operands have equal hi-bytes. 2020-09-08 14:19:48 +02:00
acqn
57117fa687 Utility functions about compare conditions. 2020-09-08 14:19:48 +02:00
acqn
64ef562fa7 Moved all optimization steps from codeopt.c and some optimization steps from coptind.c into new separate files. 2020-09-08 14:18:22 +02:00
Jesse Rosenstock
9a0e4a35e1 Fix enum bit-field ICE #1244 
This previously resulted in an ICE:
cc65: Check failed: (Entry->Type->C & T_MASK_SIGN) == T_SIGN_SIGNED,
file 'cc65/symtab.c', line 874

This CHECK is in the code that deals with changing `int` bitfields to
`unsigned int`.

Work around this by treating enum bit-fields as having their signedness
specified, so this type change code does not get called.

Fixes #1244.
 2020-09-07 11:21:23 +02:00
Tevo
1e7a9e44af Update comment to reflect addition of integer boundary constants 2020-09-06 23:32:00 +02:00
Tevo
23a8b2c303 Define integer size macros for lacking systems 
Define integer size macros for lacking systems
 2020-09-06 23:32:00 +02:00
acqn
6bb2d1d5d1 Fixed a comment on struct/union types in DoCompare(). 2020-09-06 22:47:11 +02:00
acqn
1cde952cf5 Fixed comparing an enum type with a non-enum type in DoCompare(). 2020-09-06 22:47:11 +02:00
acqn
6e0fb630d7 Fixed check for processor flags usage in case of PHP. 2020-09-06 13:32:38 +02:00
acqn
e2f950b15e Avoided referencing string literals with sizeof so that they are not output if unused elsewhere. 2020-09-05 13:21:21 +02:00
acqn
903e84c24c Std-functions are no longer inlined if they are unevaluated. 2020-09-05 13:21:21 +02:00
acqn
df07e23f2c Fixed bnegeax funcinfo on register usage. 2020-09-05 02:25:56 -04:00
acqn
f849de6769 Object addresses as non-NULL for comparison with NULL. 2020-09-04 19:50:32 +02:00
acqn
8e0b2f0833 Object addresses as non-NULL in boolean context. 2020-09-04 19:50:32 +02:00
acqn
bc5570b708 Fixed logical-NOT in constant context. 2020-09-04 19:50:32 +02:00
acqn
676b14429d Better opt chance for certain optimization steps e.g. OptPtrStore1 etc. 2020-09-04 12:00:10 +02:00
acqn
29d1999947 Rearranged the OptFunc's in alphabetic order. 2020-09-04 12:00:10 +02:00
acqn
761d00b7dc Ignore running removed old optimization steps. Neither list them in help info. 2020-09-04 12:00:10 +02:00
acqn
ae340703f2 OptDupLoads shouldn't silently do optimizations. 2020-09-04 11:58:25 +02:00
acqn
f45d2515eb Fixed OptPush1 in case later code would rely on that pushax zeroes register Y. 2020-09-04 11:58:25 +02:00
acqn
fb6bc275bc Fixed evaluation flags propagation to subexpressions in assignments and function calls. 2020-09-02 21:36:59 +02:00
acqn
2379504449 Fixed AND/OR in certain cases where the 'E_NEED_TEST' flag set for usage only in subexpressions should be cleared. 2020-09-02 21:36:59 +02:00
acqn
28de3423eb Merged some switch cases in code generation subroutines. 2020-08-31 09:12:03 +02:00
acqn
6b64b43395 Made local static data use a separated label pool from the code label pool. 2020-08-31 09:12:03 +02:00
acqn
9398e1cd33 Use a dedicated label pool for literals. 2020-08-31 09:12:03 +02:00
Oliver Schmidt
bee559d5f4
Merge pull request #1220 from acqn/StaticConst 
[cc65] Fixed constant boolean expressions
 2020-08-31 08:59:25 +02:00
acqn
74def4608a The 'E_NEED_TEST' flag shouldn't be overwritten when loading the expression result. 2020-08-31 02:30:12 +08:00
acqn
c0a873e0c8 Reduced exess errors on wrong initializations with curly braces. 2020-08-30 17:35:48 +02:00
acqn
8b580e1191 Disabled struct/union fields of 'void' type. 2020-08-30 17:33:36 +02:00
acqn
f1161daee9 Recursively checking for incomplete/unknown-sized types. 2020-08-30 17:33:36 +02:00
acqn
8541f18340 Improved diagnostic info on assignment to void types. 2020-08-30 17:33:36 +02:00
acqn
abcc2a8f1a Disallowed void arrays of elements of variant sizes. 2020-08-30 17:33:36 +02:00
acqn
d87846e1e1 Improved comments according to PR reviews. 2020-08-30 22:12:30 +08:00
acqn
60c59f59a3 Renamed StaticConstExpr() and StaticConstAbsIntExpr() with clearer comments. 2020-08-30 00:26:52 +08:00
acqn
df755df44d Warning about ESU types declared inside parameter list as they are invisble outside. 2020-08-29 16:37:16 +02:00
acqn
33a75e0a73 Optimized parameter list checking. 
Fixed function type comparison between ANSI and K&R styles.
 2020-08-29 16:37:16 +02:00
acqn
0a96ffc878 Fixed function parameter checking. 
Fixed function return type checking.
 2020-08-29 16:37:16 +02:00
acqn
4e61ae5b36 Fixed function parameter type conversion. 2020-08-29 16:37:16 +02:00
acqn
632da3f4ee Fixed tracking and checking flexible array members. 2020-08-29 16:35:42 +02:00
acqn
504aee3835
Merge branch 'master' into StaticConst 2020-08-27 06:27:23 +08:00
acqn
bb9c203222 Fixed integer promotion of unary operations. 2020-08-26 22:17:16 +02:00
acqn
8d225c32b1 Fixed checks on assignment to incomplete types. 2020-08-26 22:14:51 +02:00
acqn
43cb092a68 Fixed CHECK failures on certain usage of incomplete enums. 2020-08-26 22:14:51 +02:00
acqn
1957dc7a5c Disallowed arrays of incomplete types. 
Fixed diagnostics on incomplete local arrays.
 2020-08-26 22:14:51 +02:00
acqn
f5b1b69376 Forbid struct/union fields of incomplete types. 2020-08-26 22:14:51 +02:00
Jesse Rosenstock
d38e5858f0 Add tests for #1211 
CL_MoveRefs: Add CHECK (E->JumpTo != NULL) to make failure clearer.
 2020-08-24 18:10:22 +02:00
acqn
c3a6b39945 Made struct assignment less hackish. 2020-08-24 18:02:29 +02:00
acqn
d1995fc81a Fixed rvalue-ness of cast results. 2020-08-24 17:16:37 +02:00
acqn
911a79796d Fixed checks and diagnostics on type-casting. 2020-08-24 17:16:37 +02:00
acqn
0486d28abc Fixed Issue #327. 2020-08-22 13:44:18 +02:00
acqn
f289ea6c14 Avoided generating unnecessary true-case labels in logic AND/OR. 2020-08-22 11:10:17 +08:00
acqn
0536f4f9bd Minor fixes on constant expression checking and comments. 2020-08-21 23:27:41 +02:00
acqn
63256fd15d Changed negation of signed long stored in unsigned long to unsigned subtraction. 2020-08-21 23:16:17 +02:00
acqn
f59c2a08d9 Added support for changing multiplications with certain negative multipliers into bit-shifts. Only enable certain kinds of signed mul replacements with shift according to the code size factor settings. 2020-08-21 23:16:17 +02:00
acqn
ea7336591c Removed special-casing code for scaling up. Now it uses the normal multiplying code. 2020-08-21 23:16:17 +02:00
acqn
85ea06687b Fixed logical AND and logical OR. 2020-08-20 07:52:15 +08:00
acqn
725511131a Fixed constant expression checks with no-code requirement. 
Used return-by-value initialization for ExprDesc.
 2020-08-20 07:52:11 +08:00
acqn
3ea3887c77 Fixed warnings on const comparison. 
Warnings on expressions with no effects.
Fixed const ternary.
Fixed ternary with struct/union types as the true/false-branch expressions.
 2020-08-20 07:52:06 +08:00
acqn
17bbba7327 Added integer boolean type string. 
No longer set the "expression tested" flag with constant results in comparison.
 2020-08-20 07:52:03 +08:00
acqn
9fcde120aa Made function signatures in asm output use the parameter lists from original definitions instead of the composites. 2020-08-19 08:40:19 +02:00
Greg King
36dd82f0e6 Added g_branch() to cc65's code generator. 
It uses BRA if the platform's CPU has BRA.  Else, it generates a JMP.

(Used it in the bitfield sign-extending code.)
 2020-08-18 19:11:18 -04:00
Jesse Rosenstock
ff535b8e1a Treat signed int bit-fields as signed 
Prior to this PR, `int`, `signed int`, and `unsigned int`
bitfields are all treated as `unsigned int`.

With this PR, `signed int` will be treated as `signed int`,
and the others remain unsigned.

Since `Type` does not distinguish between `int` and `signed int`,
add an extra `int* SignenessSpecified` param to `ParseTypeSpec`
so we can tell these apart for bit-fields and treat plain `int : N`
as `unsigned int : N` since it is more efficient to zero-extend
than sign-extend.

Fixes #1095
 2020-08-18 12:23:20 +02:00
Jesse Rosenstock
55cebc7b9e Move bit-field adjustment to codegen.c 
Extract functions g_testbitfield and g_extractbitfield from LoadExpr.

This helps prepare for #1192, since g_extractbitfield will get much
longer and call AddCodeLine.
 2020-08-18 10:55:31 +02:00
acqn
56b659c0be Made char type a distinct type. 2020-08-18 10:48:38 +02:00
acqn
87889df9e9 Fixed type checking in relation operations. 2020-08-18 09:39:43 +02:00
acqn
f206833a20 Alternative fix for Issue #1167. 2020-08-17 20:31:02 +02:00
acqn
0afa1a9a95 Fixed function signatures in asm output. 
Improved full type name production.
 2020-08-17 20:30:32 +02:00
acqn
ebae994dc9 Fixed CHECK failure when calling functions defined with repeated parameter names. 
Clarified the terms "parameter" vs "argument" in FunctionParamList().
 2020-08-17 20:27:57 +02:00
acqn
15f28c3a8c Fixed getting the basic raw type names. 2020-08-17 00:00:03 +02:00
acqn
11cd3e5cbd Utility for checking general datatype categories, incomplete ESU types and arrays of unknown sizes. 2020-08-17 00:00:03 +02:00
Jesse Rosenstock
1cf9404c19 Support C2X _Static_assert(expr) syntax 
This makes the message in _Static_assert(expr, message) optional.

Fixes #1188.
 2020-08-16 11:38:20 +02:00
Jesse Rosenstock
c4698dfd07 Use C89 semantics for integer conversions 
Previously, the following rules were used for binary operators:
* If one of the values is a long, the result is long.
* If one of the values is unsigned, the result is also unsigned.
* Otherwise the result is an int.

C89 specifies the "usual arithmetic conversions" as:
* The integral promotions are performed on both operands.
* Then the following rules are applied:
  * If either operand has type unsigned long int, the other operand is
    converted to unsigned long int.
  * Otherwise, if one operand has type long int and the other has type
    unsigned int, if a long int can represent all values of an unsigned int,
    the operand of type unsigned int is converted to long int; if a long int
    cannot represent all the values of an unsigned int, both operands are
    converted to unsigned long int.
  * Otherwise, if either operand has type long int, the other operand is
    converted to long int.
  * Otherwise, if either operand has type unsigned int, the other operand is
    converted to unsigned int.
  * Otherwise, both operands have type int.
https://port70.net/~nsz/c/c89/c89-draft.html#3.2.1.5

As one example, these rules give a different result for an operator
with one long operand and one unsigned int operand.  Previously,
the result type was unsigned long.  With C89 semantics, it is just long,
since long can represent all unsigned ints.

Integral promotions convert types shorter than int to int (or unsigned int).
Both char and unsigned char are promoted to int since int can represent
all unsigned chars.
https://port70.net/~nsz/c/c89/c89-draft.html#3.2.1.1

Rename promoteint to ArithmeticConvert, since this is more accurate.

Fixes #170
 2020-08-15 19:14:31 +02:00
acqn
b19bb14348 Fixed checking conflitcing declarations with external vs other linkage. 2020-08-14 18:33:54 +02:00
acqn
13ed557b92 Fixed compatibility checking of function declarations by using the composite types of them. 2020-08-14 18:33:54 +02:00
acqn
44d52935da Utility for getting the composite types of functions. 2020-08-14 18:33:54 +02:00
acqn
8a417ff039 Improved ESU declaration failure handling. 2020-08-14 18:15:31 +02:00
acqn
0dfe9ff5fe Fixed testing 'struct->field'. 2020-08-14 08:32:22 +08:00
acqn
0fa18886c0 Fixed copying structs/unions > 4 bytes. 2020-08-13 08:59:05 +02:00
acqn
03b37cf712 Fixed type comparisons of typedefs and arrays. 2020-08-12 15:04:26 +02:00
acqn
eb4464e828 Fixed type comparisons of ESU types with stricter rules. 2020-08-12 15:04:26 +02:00
acqn
fe44fe963f Disallowed empty enums. 2020-08-12 15:02:43 +02:00
acqn
97065faf1a Disallowed struct/union types of 0 size as cc65 is not ready to support them. 2020-08-12 15:02:43 +02:00
acqn
4dfc1a5ded Using a dedicated SC_FICTITIOUS flag in case of parsing errors. 2020-08-12 15:01:31 +02:00
acqn
bde5be6793 Improved error message on initializing extern variables inside functions. 2020-08-12 15:01:31 +02:00
acqn
b62b1650f5 Improved error messages on struct/union type multiple definitions. 2020-08-12 15:01:31 +02:00
acqn
fe3f726fd6 Improved incomplete enum typed diagnostics. 2020-08-12 15:01:31 +02:00
acqn
0d53806490 Avoided excess errors in incomplete struct assignment. 2020-08-12 15:01:31 +02:00
acqn
9317db6642 Slightly improved type error messages of 'op='. 2020-08-12 15:01:31 +02:00
acqn
9fcfa3fc49 Fixed full type names of functions with "empty" parameter list. 2020-08-12 15:01:31 +02:00
acqn
68d63b089d Reduced error flood raised by misplaced variable declarations. 2020-08-12 15:01:31 +02:00
acqn
0f1a5e0520 Set enum tag definition flags. 2020-08-09 22:12:36 +02:00
acqn
1dd899c7c9 Fixed non-file-scope multiple definition checking. 2020-08-09 22:12:36 +02:00
acqn
d68cd90e47 Function declaration in functions cannot have storage classes other than 'extern'. 2020-08-07 10:16:33 +02:00
acqn
43efc256f1 Changed error/warning messages not using the term 'tentative' according to PR reviews. 2020-08-07 10:16:33 +02:00
acqn
b2d3b8379c Warning about forward declaration of enum types in non-cc65 modes. 2020-08-07 10:16:33 +02:00
acqn
8cdffc1944 No storage for unsuccessfully parsed variables. 2020-08-07 10:16:33 +02:00
acqn
fdef067629 Fixed tentative definition of variables of incomplete types that may be completed later. 
Tenative arrays that never get completed are now assumed each to have one element.
 2020-08-07 10:16:33 +02:00
acqn
fdd120db49 Enabled to output errors and warnings about tentative definitions. 2020-08-07 10:16:33 +02:00
acqn
f59d6b8f6a Redefining enums/structs/unions of 0 size is no longer treated as declarations and thus forbidden. 2020-08-07 10:16:33 +02:00
Jesse Rosenstock
cdfc1afd89 Fix vacuous comparison warning from 0df45fe 
cc65/symentry.c:306:60: warning: address of array 'Sym->Name' will always evaluate to 'true' [-Wpointer-bool-conversion]
    sprintf (TypeName, "%s %s", GetBasicTypeName (T), Sym->Name ? Sym->Name : "<unknown>");
                                                      ~~~~~^~~~ ~
 2020-08-05 17:48:13 +02:00
Jesse Rosenstock
d8f9201ecd LoadExpr: Optimize <= 8-bit bit-field loads 
Set CF_FORCECHAR to do as many operations as char ops as possible.
Clear high byte at the end.
 2020-08-05 12:49:46 +02:00
Jesse Rosenstock
0c72647edd Remove extra ED_TestDone call 
Accidentally added in #1141.
 2020-08-03 12:40:58 +02:00
acqn
bae431eab0 Fixed error message of CheckedPSizeOf(). 2020-08-03 06:18:28 +02:00
acqn
d6aa446b54 Error info for loading expressions of incomplete enum types. 
No more "Illegal type 0016".
 2020-08-02 23:51:11 +02:00
acqn
6df4f1996b Improved diagnostics with more detailed type names. 2020-08-02 23:51:11 +02:00
acqn
11a5f0edf1 No "Statement has no effect" warnings on statements with errors. 2020-08-02 23:51:11 +02:00
acqn
7e68a24625 Clearer warning messages on unused symbols. 2020-08-02 23:51:11 +02:00
acqn
e8c2886455 Improved error messages on redefinitions of constants and bit-fields. 2020-08-02 23:51:11 +02:00
acqn
ef5a4db12e Improved warning messages on UB shifts. 2020-08-02 23:51:11 +02:00
acqn
2ab7272673 Improved warning on comparison of unsigned type < 0. 2020-08-02 23:51:11 +02:00
acqn
99ac1c46da Made errors/warnings statistic message visible when there are errors. 2020-08-02 23:51:11 +02:00
acqn
44e3080ea9 Increased upper limit of allowed errors before aborting. 2020-08-02 23:51:11 +02:00
acqn
00c16d34a4 Minor fixes for HandleSymRedefinition(). 2020-08-02 23:51:11 +02:00
acqn
80b0e57543 Changed parameter constness of TypeConversion(). 2020-08-02 18:55:46 +02:00
acqn
003d47cc8b Improved type conversion diagnostic messages. 
Allowed incompatible pointer assignments with warnings.
Fixed Issue #1089.
 2020-08-02 18:55:46 +02:00
acqn
d841bbe498 Utility to check for castability. 2020-08-02 18:55:46 +02:00
acqn
52051f444e Using tracked individual string buffers instead of a shared static string buffer for full type names. 2020-08-02 18:55:46 +02:00
acqn
4ccf10f3fa Utility to get full type names. 2020-08-02 18:55:46 +02:00
acqn
0df45fe2f2 Utility for getting ESU tag type symbols. 2020-08-02 18:55:46 +02:00
Oliver Schmidt
c831f40e9b Unfortunately there's no other way than using the absolute path to init the correct MSVC 2017 environment. 2020-08-02 18:44:13 +02:00
Oliver Schmidt
992596c981 Initialize MSVC 2017 environment before build. 2020-08-02 17:32:36 +02:00
Jesse Rosenstock
adda28f5c5 LoadExpr: Set CF_FORCECHAR if test is required 
If we are testing, we do not need to load the high byte(s).
 2020-08-02 12:31:57 +02:00
acqn
2a555d198c Changed 'switch' to 'if' according PR review comments. 2020-08-02 12:28:11 +02:00
acqn
30fd8592ae Avoid internal errors when using function-type objects in expressions. 2020-08-02 12:28:11 +02:00
acqn
e526cbbff6 Fixed handling multiple storage specifiers in one declaration. 2020-08-02 02:20:25 +02:00
Oliver Schmidt
e1043fac12 Adjusted to https://github.com/cc65/cc65/pull/1124. 2020-08-01 10:56:05 +02:00
Jesse Rosenstock
9c70bd44a6 Clarify comment about large shift 
This is to avoid overflow on host platform.
 2020-07-31 19:33:28 +02:00
Jesse Rosenstock
847982c6bf Handle bit-field test after shift/mask 
Previously, bit-field tests were incorrectly combined with load in
`if (x.bitfield)`.  Delay the test until after the shift/mask
is done.  Still combine tests with load if no shift/mask is required.

Fixes #1139
 2020-07-31 19:33:28 +02:00
Jesse Rosenstock
d0c7108dcf Change copyright notice to "The cc65 Authors" 2020-07-30 19:17:11 +02:00
Jesse Rosenstock
3df6c383c0 Add support for static_assert 
Add C11's _Static_assert and static_assert macro.

This is like #error, but is handled at a later stage
of translation, so it is possible to check sizes of
types, values of enums, etc.

https://en.cppreference.com/w/c/language/_Static_assert
https://port70.net/~nsz/c/c11/n1570.html#6.7.10
 2020-07-30 19:17:11 +02:00
Jesse Rosenstock
2d5fd0fc63 Use char ops if possible for bit-field loads 
Set CF_FORCECHAR and change type to char once we have
shifted into a char.

This saves some unnecessary ldx #0 instructions.
 2020-07-30 14:59:23 +02:00
acqn
e38f601fcc Fixed padding at the ends of structs with bit-fields. 2020-07-30 08:38:24 +02:00
acqn
8a511bb63d Fixed nested array initializers. 2020-07-30 08:38:24 +02:00
acqn
9075a853dc Allows one trailing comma before the closing curly of a struct/union initializer. 2020-07-30 08:38:24 +02:00
acqn
25d10d9d9a Fixed nested struct/union initialization. 
Fixed bit-fields offsets in anonymous structs.
 2020-07-30 08:38:24 +02:00
acqn
d6d667a688 Improved error handling with symbol redefinitions. 2020-07-30 08:22:29 +02:00
acqn
92de4fa0d0 Enabled to recognize labels when parsing local variable declarations. 2020-07-30 08:22:29 +02:00