antcc/src/t_x86-64_isel.c, branch trunk A little C compiler https://git.lemon.rip/antcc/atom?h=trunk 2026-04-09T17:32:24+00:00 x86-64/isel: always test for ZF after shift 2026-04-09T17:32:24+00:00 lemon lsof@mailbox.org 2026-04-09T17:32:24+00:00 urn:sha1:010ed5bc8a6840602776ddd1a2d4b7f817b0c56e The shift instructions do not update flags if the shift amount was zero, so can't realiably do this micro optimization x86-64/isel: fix stack addr regression from 8b79b61ae7 2026-04-09T08:24:07+00:00 lemon lsof@mailbox.org 2026-04-09T08:22:24+00:00 urn:sha1:7355aa3e9e88b7236fc86226b50ce820c7ff5220 Checks for RADDR should also look for RSTACK when fusing addresses x86-64/isel: use integer stores for storing float constants 2026-04-09T07:54:58+00:00 lemon lsof@mailbox.org 2026-04-09T07:54:58+00:00 urn:sha1:53c789eb351e0281026d7145dc6dbc83338d7aa8 Because the integer mov can have immediate operands, avoids a round trip through an XMM register. 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. style: change uvlong -> u64int, vlong -> s64int 2026-03-22T21:00:35+00:00 lemon lsof@mailbox.org 2026-03-22T21:00:35+00:00 urn:sha1:7c5dd45eca377a3b675b6f0d4a9331bc3f971ac9 Is much nicer. I don't know whether I want to do it for the other int types too. char and uchar are fine as bytes. u/short -> u/s16int, maybe. 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. 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: finish renaming 2026-03-17T15:10:00+00:00 lemon lsof@mailbox.org 2026-03-17T12:43:05+00:00 urn:sha1:3eeb6f219e4d32160fa10895b57a8ddfefff5ff7 REFACTOR: move sources to src/ 2026-03-17T12:22:00+00:00 lemon lsof@mailbox.org 2026-03-17T12:22:00+00:00 urn:sha1:a8d6f8bf30c07edb775e56889f568ca20240bedf