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* nicer defaults and facilities for cross-compilationlemon2025-12-171-2/+6
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* bitset: better implementation of bsiter() and stufflemon2025-12-161-9/+15
| | | | Also changed the type to size_t for portability
* create distinct interned string typelemon2025-12-151-3/+4
| | | | | | | | | | | | | | Interned strings are used pervasively, so it's a good idea to add a layer of type safety to differentiate them from general cstrs and avoid potential bugs from comparing non-interned and interned strings. Not that that's happened so far that I can remember, but it could. I'm 90% sure it's legal to alias `struct {char c;}` pointers with `char` pointers. This specific typedef gives type safety but with a simple one-way `internstr -> const char *` typecast (with `&istr->c`). Converting the other way around is more intentional: a straight up cast `(internstr)cstr` which sticks out as unchecked and probably wrong, or calling the intern(cstr) function, which is the right way.
* move intern() to mem.clemon2025-12-151-0/+3
| | | | | Being in lex.c was vestigial, since it was being used all over the frontend and backend.
* cpp: support #line directiveslemon2025-12-141-2/+3
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* Add -O optimization flaglemon2025-12-131-0/+4
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* s/amd64/x86_64/lemon2025-12-121-1/+1
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* lex: use pmap for macro lookuplemon2025-12-121-2/+5
| | | | To reduce hashmap code repetition. Also add pmap_del for this purpose
* rename arraylength macro -> countoflemon2025-12-111-1/+1
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* _Alignof and stufflemon2025-12-111-0/+2
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* driver: add -Werrorlemon2025-12-111-0/+1
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* fatal() make noreturnlemon2025-12-111-2/+8
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* make fatal() _Noreturnlemon2025-12-111-1/+1
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* misc fixeslemon2025-12-101-1/+1
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* mem: fix pmap_init and change hashmap load factors to 75%lemon2025-12-091-1/+1
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* lex: make some hashtables resizablelemon2025-12-091-7/+6
| | | | Was hiting the fixed limits trying to preprocess sqlite3amalgamation
* add command-line predefined macros (-D, -U)lemon2025-12-061-0/+3
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* preprocessor: add #ifndef...#endif include guard optimizationlemon2025-12-021-2/+2
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* use bstdout for -Elemon2025-11-261-1/+1
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* debug output to stdoutlemon2025-11-191-0/+1
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* factor type stuff into type.hlemon2025-11-161-208/+1
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* amd64: fix aggregate abi stuff;; ir: fold, peephole optimizing constructorslemon2025-11-051-3/+3
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* c: make builtin va_list an opaque structlemon2025-10-231-2/+2
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* use libc's stdout/stderr; also eliminate some unnecessary recursion in bfmtlemon2025-10-231-6/+13
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* refactor vec_of(T) and misclemon2025-10-201-32/+42
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* c irgen fixeslemon2025-10-191-1/+0
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* #pragma oncelemon2025-10-181-2/+7
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* add -E preprocessing optionlemon2025-10-171-1/+2
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* wide str and char literalslemon2025-10-161-2/+6
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* lowsetsetbitlemon2025-10-151-1/+2
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* c: fix codegen for enum typeslemon2025-10-151-2/+7
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* implement most of preprocessorlemon2025-10-131-0/+11
| | | | | | | | - concatenation (##) - builtin macros (__FILE__ etc) - fails in some edge cases, and code needs cleanup - add embedded system include files (stddef.h, stdarg.h for now) - can handle stdio.h now
* c: call memset for some runtime zero initializationslemon2025-10-091-0/+8
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* alloc changeslemon2025-09-171-0/+4
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* preliminary pie and piclemon2025-09-141-0/+1
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* regset doesnt need all those macroslemon2025-09-141-5/+2
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* change freearena for correctnesslemon2025-09-141-4/+4
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* regalloc improvementslemon2025-09-141-0/+1
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* fixes, delnopslemon2025-09-091-0/+1
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* regalloc: start implementing linear scanlemon2025-09-081-2/+9
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* backend: fix mem2reg & regalloclemon2023-06-261-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | they were broken, especially for unstructured control flow. most significant fix is to register allocator for temporaries that are used before the first definition in the source order, e.g.: @1: %x = add %y, 1 b @3 @2 %y = ... b @1 it's legal for %x to use %y there (assuming @2 dominates @1) but from the point of view of the register allocator %y is defined and freed and then used again, which broke things. the fix is to introduce phis for this situation: @1: %y.1 = phi @2 %y %x = add %y.1, 1 b @3 @2 %y = ... b @1 then regalloc phi handling code makes it work
* frontend: add labels and goto statementlemon2023-06-261-0/+1
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* fix some warningslemon2023-06-251-1/+1
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* backend: fix regalloc to work with more complex dataflowlemon2023-06-241-1/+41
| | | | | | | | basically an allocation map at the beginning (in) and end (out) of each block is kept and after the first allocation pass another pass is ran to resolve allocation conflicts between each edge, plus another pass to finish lowering phi functions. also introduced `regset` and plenty of other miscellaneous fixes
* mem2reg: implement ssa construction; this breaks regalloc right nowlemon2023-06-211-1/+1
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* explicitly store predecessors in each blocklemon2023-06-211-0/+23
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* add basic mem2reglemon2023-06-201-0/+1
| | | | | | | promotes uniform stack slots to temporaries currently only for immutable variables, next thing to implement is ssa construction
* move ctype to common.hlemon2023-06-191-0/+7
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* add endian.h for endian dependent stufflemon2023-06-181-3/+10
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* fix memory bugslemon2023-06-181-1/+1
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