antcc/src/ir_regalloc.c, branch trunk A little C compiler https://git.lemon.rip/antcc/atom?h=trunk 2026-04-08T08:26:18+00:00 Implement basic aarch64 struct arg passing ABI 2026-04-08T08:26:18+00:00 lemon lsof@mailbox.org 2026-04-08T08:26:18+00:00 urn:sha1:8b79b61ae78c91c069447331ed64d400187bdd77 - Missing: vaargs, >2 member HFAs - Reworked the way stack allocation references are lowered. Now RSTACK persists throughout all passes until emit. This allows deferring stack frame layouting until the end in a less messy way than before, which was emiting frame-pointer relative addresses @ isel time and patching them up later in emit to account for actual stack frame layout. regalloc: remove dead code for liveness fixup 2026-03-24T13:40:37+00:00 lemon lsof@mailbox.org 2026-03-24T13:40:37+00:00 urn:sha1:2707c6ccdef9dd557c6733a3753909a93425f87c I tested it and it seems this wasn't doing anything. Maybe at some point in the past it was needed to fix up a worse implementation of mem2reg? So turn it into a check. Maybe it's wrong and it can be necessary. IR: mark free'd instructions as such 2026-03-23T18:20:32+00:00 lemon lsof@mailbox.org 2026-03-23T18:20:32+00:00 urn:sha1:8630aeb8b43c507cd00f5b091ddcee4def464f4d That way they are not copied when inlining. Also rename ninstr -> ninstrtab. opnarg -> opnoper rega/devirt: don't assume unused operands are zeroinitialized 2026-03-23T10:27:34+00:00 lemon lsof@mailbox.org 2026-03-23T10:24:10+00:00 urn:sha1:b9d12248e4c3e698ab35f8f264443d5a4b48be1a aarch64: rem/urem, bswap*, arg bugfix 2026-03-22T18:25:46+00:00 lemon lsof@mailbox.org 2026-03-22T18:25:46+00:00 urn:sha1:cbca5355c0c0b1910735b1430e2552855a2aa5c7 IR: add 3rd operand to Instr 2026-03-22T09:49:26+00:00 lemon lsof@mailbox.org 2026-03-21T21:20:34+00:00 urn:sha1:79874c83bf76a5b3efd3d558933b90d9b53b829e The motivation is for aarch64 msub/madd instrs, for isel to produce. But it should be useful for other things too. regalloc & emit: explicit comparisons over memcmp of small structures 2026-03-19T10:51:13+00:00 lemon lsof@mailbox.org 2026-03-19T10:51:13+00:00 urn:sha1:46fc55e27390ea85eb34ec0367f40426197c9b9f The one in x86-64_emit was not portable due to relying on zero initialization of inactive union fields/padding. regalloc: use in-place mergesort for intervals 2026-03-18T19:28:20+00:00 lemon lsof@mailbox.org 2026-03-18T19:28:20+00:00 urn:sha1:626c927bb70519e630402093ff4fba432d2ac8c5 Instead of constructing an array and doing quicksort. i love .02% speedup microoptimizations Refactor: use typedefs and CamelCase for aggregate types 2026-03-18T10:33:41+00:00 lemon lsof@mailbox.org 2026-03-18T10:33:41+00:00 urn:sha1:1d9e19fb3bb941cdc28e9d4c3063d3e213fd8312 Looks nicer Refactor: move some utils from antcc.h to their own headers 2026-03-17T17:30:37+00:00 lemon lsof@mailbox.org 2026-03-17T17:30:10+00:00 urn:sha1:04930d578e65d560253d0c24af43e0ecd06117c8