forked from Mirrors/tinycc
101 lines
3.6 KiB
Plaintext
101 lines
3.6 KiB
Plaintext
TODO list:
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Bugs:
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- i386 fastcall is mostly wrong
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- FPU st(0) is left unclean (kwisatz haderach). Incompatible with
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optimized gcc/msc code
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- see transparent union pb in /urs/include/sys/socket.h
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- precise behaviour of typeof with arrays ? (__put_user macro)
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but should suffice for most cases)
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- handle '? x, y : z' in unsized variable initialization (',' is
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considered incorrectly as separator in preparser)
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- transform functions to function pointers in function parameters
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(net/ipv4/ip_output.c)
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- fix function pointer type display
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- check section alignment in C
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- fix invalid cast in comparison 'if (v == (int8_t)v)'
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- finish varargs.h support (gcc 3.2 testsuite issue)
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- fix static functions declared inside block
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- fix multiple unions init
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- make libtcc fully reentrant (except for the compilation stage itself).
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- struct/union/enum definitions in nested scopes (see also Debian bug #770657)
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- __STDC_IEC_559__: float f(void) { static float x = 0.0 / 0.0; return x; }
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- memory may be leaked after errors (longjmp).
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Portability:
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- it is assumed that int is 32-bit and sizeof(int) == 4
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- int is used when host or target size_t would make more sense
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- TCC handles target floating-point (fp) values using the host's fp
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arithmetic, which is simple and fast but may lead to exceptions
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and inaccuracy and wrong representations when cross-compiling
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Linking:
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- static linking (-static) does not work
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Bound checking:
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- fix bound exit on RedHat 7.3
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- setjmp is not supported properly in bound checking.
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- fix bound check code with '&' on local variables (currently done
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only for local arrays).
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- bound checking and float/long long/struct copy code. bound
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checking and symbol + offset optimization
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Missing features:
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- disable-asm and disable-bcheck options
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- __builtin_expect()
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- atexit (Nigel Horne)
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- C99: add complex types (gcc 3.2 testsuite issue)
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- postfix compound literals (see 20010124-1.c)
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- interactive mode / integrated debugger
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Optimizations:
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- suppress specific anonymous symbol handling
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- more parse optimizations (=even faster compilation)
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- memory alloc optimizations (=even faster compilation)
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- optimize VT_LOCAL + const
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- better local variables handling (needed for other targets)
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Not critical:
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- C99: fix multiple compound literals inits in blocks (ISOC99
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normative example - only relevant when using gotos! -> must add
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boolean variable to tell if compound literal was already
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initialized).
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- add PowerPC generator and improve codegen for RISC (need
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to suppress VT_LOCAL and use a base register instead).
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- fix preprocessor symbol redefinition
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- add portable byte code generator and interpreter for other
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unsupported architectures.
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- C++: variable declaration in for, minimal 'class' support.
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- win32: __intxx. use resolve for bchecked malloc et al.
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check exception code (exception filter func).
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- handle void (__attribute__() *ptr)()
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- VLAs are implemented in a way that is not compatible with signals:
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http://lists.gnu.org/archive/html/tinycc-devel/2015-11/msg00018.html
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Fixed (probably):
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- bug with defines:
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#define spin_lock(lock) do { } while (0)
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#define wq_spin_lock spin_lock
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#define TEST() wq_spin_lock(a)
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- typedefs can be structure fields
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- see bugfixes.diff + improvement.diff from Daniel Glockner
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- long long constant evaluation
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- add alloca()
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- gcc '-E' option.
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- #include_next support for /usr/include/limits ?
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- function pointers/lvalues in ? : (linux kernel net/core/dev.c)
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- win32: add __stdcall, check GetModuleHandle for dlls.
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- macro substitution with nested definitions (ShangHongzhang)
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- with "-run" and libtcc, a PLT is now built.
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- '-E' option was improved
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- packed attribute is now supported
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- ARM and ARM64 code generators have been added.
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