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* regalloc: fixbug with phi move of stack <- stack lemon2025-12-132-6/+5
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* Add -O optimization flag lemon2025-12-134-2/+15
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* fix position independent loads of function symbols. lemon2025-12-139-26/+48
| | | | | | | | For `extern int x[1];`, can use PCREL32 for &x. But for `extern int x(int)`, must use GOTREL, when not being called directly (that's PLT). Therefore the type of an external symbol (actually just whether it denotes a function) matters when deciding what kind of relocation to emit, so keep that information.
* test/14 lemon2025-12-131-0/+12
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* x86-64/emit errata lemon2025-12-121-7/+4
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* x86_64: fix erroneous encoding of index reg in no-pie situations lemon2025-12-121-11/+1
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* s/amd64/x86_64/ lemon2025-12-1210-20/+20
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* emit: turn ADD -imm into SUB imm lemon2025-12-121-1/+5
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* isel: fix bug where sub turned into add, but inplace didn't reflect lemon2025-12-121-2/+2
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* c: switch stmt diagnostics lemon2025-12-121-8/+49
| | | | For duplicate cases, case value overflow
* amd64/emit: change instr desc table a little lemon2025-12-121-157/+158
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* lex: use pmap for macro lookup lemon2025-12-124-134/+100
| | | | To reduce hashmap code repetition. Also add pmap_del for this purpose
* rename arraylength macro -> countof lemon2025-12-1115-106/+106
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* default to C11 lemon2025-12-111-1/+1
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* c: accept C99 `[static N]` style array decls, changes to fn quals lemon2025-12-115-61/+56
| | | | | | Function parameters qualifiers don't matter outside of function definition. `int (const int)` should be compatible with `int(int)` etc. So no need to store them in the typedata.
* _Alignof and stuff lemon2025-12-115-13/+53
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* c: use a look-up table for isdecltok() lemon2025-12-111-14/+18
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* -trigraphs option lemon2025-12-112-3/+5
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* c: optimize environment decl lookup lemon2025-12-111-6/+26
| | | | | Use a hashmap for the toplevel, optimizing for the common use case where the file-scope has many more declarations than local scopes do
* c: disallow mismatched nested extern decl, & more diagnostics lemon2025-12-111-17/+24
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* c: support for noreturn, and decl parsing cleanup lemon2025-12-115-110/+119
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* driver: add -Werror lemon2025-12-113-1/+6
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* fatal() make noreturn lemon2025-12-111-2/+8
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* make fatal() _Noreturn lemon2025-12-112-2/+2
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* lex/expr(): cleanup lemon2025-12-111-29/+29
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* c: expr2reloc() change sig to return addend lemon2025-12-111-15/+12
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* ir: bump MAXINSTR lemon2025-12-101-1/+1
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* embedfilesdir: don't need that much padding lemon2025-12-101-1/+1
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* lexer: properly add padding for cpppredefs lemon2025-12-101-2/+2
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* c: fix static relocation for &sym[offset] lemon2025-12-101-7/+6
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* parallel move; implement reg<->stack swp lemon2025-12-102-5/+21
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* update lua/.gitignore lemon2025-12-101-0/+2
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* regalloc: optimize a little edge case better lemon2025-12-101-4/+6
| | | | | | | | | | | | With two-address instructions one needs to make sure the dst doesn't get allocated to the same reg as the right-hand operand: %r = mul %x, %y ; %y cannot be %r Except, if the operands are the same %r = mul %x, %x ; if %x is dead after this instr, it's fine to allocate %r to the same reg
* c: fix compound assignment type conversions when types don't match lemon2025-12-103-2/+3
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* misc fixes lemon2025-12-103-5/+4
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* elf: initialize str hashtable to a nicer size lemon2025-12-091-0/+1
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* mem: fix pmap_init and change hashmap load factors to 75% lemon2025-12-092-5/+4
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* lex: make some hashtables resizable lemon2025-12-092-36/+73
| | | | Was hiting the fixed limits trying to preprocess sqlite3amalgamation
* rega: change assert for spilled callee. it's ok if nspill==1 lemon2025-12-091-1/+1
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* c: fix some static initialziers lemon2025-12-081-1/+3
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* eval: &*x address constants lemon2025-12-081-0/+4
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* c: fix more declaration parsing bugs lemon2025-12-081-7/+17
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* driver: update help lemon2025-12-081-14/+32
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* driver: use fexecve for -run lemon2025-12-081-17/+18
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* Add lua 5.4.0 test suite lemon2025-12-07121-2/+59828
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* test/12-flt: add some weird float cmp edgecases lemon2025-12-071-2/+9
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* io: just use sprintf for printing doubles lemon2025-12-071-28/+6
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* amd64: fix wrong condition code being used for float gth lemon2025-12-071-1/+1
| | | | ughh
* amd64: use XORPS for floating point negation lemon2025-12-072-3/+7
| | | | | | | | | | Previously `neg x` was being turned into `sub 0, x`. But this gives the wrong result for zero/negative zero (-0.0 == -0.0 but 0.0 - 0.0 == 0.0), so it wasn't IEEE compliant or correct. Do what every other compiler does instead and flip the sign bit with an exclusive or. Should implement someway of deduplicating small data constants like the ones used here though.
* abi: fix aggregate passed by regs 2nd reg offset lemon2025-12-063-27/+35
| | | | | | | | | It was broken for example `struct { i32 a; f64 b; }` (would try to load/store b from byte offset 4, not 8). Introduce r2off, realize in x86-64 it's always 8; even `struct {i32 a; f32 b;}` gets passed in one (integer) register. But not so in (future) ABIs like RISC-V, I believe there `{i32, f32}` would get passed in 1 integer and 1 float register (r2off = 4).
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