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* fix some warnings lemon2023-06-253-11/+2
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* lex: use a circular buffer cache for pre-pre-processed chars lemon2023-06-252-56/+67
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* regalloc: fix temporary rename clobbering return register with multiple returns lemon2023-06-251-2/+13
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* regalloc add sources lemon2023-06-251-1/+3
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* abi0: fix agg return by pointer not updating arg count lemon2023-06-241-0/+1
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* fix regalloc thinking some ins are dead by adding ins.keep lemon2023-06-243-3/+8
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* update todo.txt lemon2023-06-241-1/+1
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* ir: dattab shouldn't reset for every function lemon2023-06-241-1/+1
| | | | this was causing later functions' data to override earlier data
* amd64/emit: more float fixes lemon2023-06-241-21/+24
| | | | | optimize loading 0.0 in phis as well as regular copies and also don't use inc or addr for float addition
* backend: don't mixup float and int temps lemon2023-06-244-11/+29
| | | | | | copy propagation only happens when dataclasses match, register allocator ignores hints if hint register class and instruction class differ, also add mov between int and float regs in amd64/emit
* fix replcuses lemon2023-06-243-19/+19
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* backend: fix regalloc to work with more complex dataflow lemon2023-06-2412-225/+748
| | | | | | | | 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
* change RMORE -> RADDR; use RXXX (RNONE) for special args,also undef lemon2023-06-229-74/+73
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* Add .editorconfig lemon2023-06-221-0/+14
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* misc fix lemon2023-06-223-18/+55
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* mem2reg: implement ssa construction; this breaks regalloc right now lemon2023-06-219-159/+300
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* explicitly store predecessors in each block lemon2023-06-218-115/+135
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* amd64: fix aggregate return in regs lemon2023-06-201-3/+3
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* amd64: conform to ABI for varargs func calls lemon2023-06-202-1/+9
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* elf: fix emitting small dats lemon2023-06-201-3/+3
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* fix type of undeclared functions lemon2023-06-201-0/+1
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* improve codegen for div a little (bikeshedding) lemon2023-06-202-1/+7
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* amd64/emit: ensure stack is 16-byte aligned lemon2023-06-203-10/+34
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* add basic mem2reg lemon2023-06-208-14/+221
| | | | | | | promotes uniform stack slots to temporaries currently only for immutable variables, next thing to implement is ssa construction
* fix regression wiht ret args not being fixed lemon2023-06-201-2/+7
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* fix out of bounds read lemon2023-06-201-0/+1
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* regalloc: fix bug in spilling code lemon2023-06-201-7/+24
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* another emit() errata lemon2023-06-201-1/+1
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* fix regression lemon2023-06-201-4/+4
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* don't lower params and args to registers in abi0 lemon2023-06-206-57/+101
| | | | | it's better to do it later, currently in isel(), but perhaps in a pre-isel abi1 pass
* fix cls logic for comparison instrs lemon2023-06-206-17/+23
| | | | | | | | previously instr.cls always represented the output dataclass. this doesn't work for comparisons because we know the output is always a boolean integer and we care about the actual comparison dataclass. so now .cls represents the operation dataclass, which matches the result class except for comparisons where the result is always KI4V
* errata lemon2023-06-201-2/+2
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* elf: fix type mismatch from bfore lemon2023-06-191-3/+3
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* regalloc: alloc extra memory for alloc map lemon2023-06-191-1/+1
| | | | | regalloc itself can insert instructions so this was causing out of bounds read errors
* backend: compile comparison instrs and branches lemon2023-06-198-40/+370
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* amd64/emit: fix mov(zx/sx)w lemon2023-06-191-6/+6
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* oops lemon2023-06-191-1/+1
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* frontend: disallow non-local decls in for initializer lemon2023-06-191-6/+14
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* frontend: rename parser -> lexer and document c.c lemon2023-06-193-233/+251
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* frontend: separate compiler & lexer lemon2023-06-197-381/+386
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* frontend: add for, break, continue statements lemon2023-06-193-75/+202
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* fix isel & emit for sym constants lemon2023-06-193-9/+11
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* add %y symbol printing lemon2023-06-192-4/+14
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* move ctype to common.h lemon2023-06-192-11/+7
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* don't try to compile when debugging IR lemon2023-06-193-8/+13
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* oops lemon2023-06-191-1/+1
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* forgot some statics lemon2023-06-182-3/+3
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* update todo.txt lemon2023-06-181-2/+0
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* separate elf64 and elf32 structures lemon2023-06-182-180/+354
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* add endian.h for endian dependent stuff lemon2023-06-187-55/+150
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