antcc/ir/regalloc.c, branch trunk A little C compiler https://git.lemon.rip/antcc/atom?h=trunk 2026-03-17T12:22:00+00:00 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 regalloc: improve spilling and cleanup 2026-03-16T17:15:37+00:00 lemon lsof@mailbox.org 2026-03-16T17:15:37+00:00 urn:sha1:28261b6b1b55184ce7084eb14cdcb42edc7f8480 Instead of spilling current interval when running out of registers, spill the longest-lived active interval with a lower spill cost than current. Spill costs are estimated based on multiplicative loop depth. Also cleanup regalloc.c somewhat. Update todo.txt too. regalloc: fix minor regression with storing of regs into spilled stack slots 2026-03-04T16:26:23+00:00 lemon lsof@mailbox.org 2026-03-04T16:26:23+00:00 urn:sha1:4fa7cc840f591392d1d2c58c60e4f3e403050f1f ir: make address ref hash table resizable 2026-02-28T19:38:55+00:00 lemon lsof@mailbox.org 2026-02-28T19:38:55+00:00 urn:sha1:f06da11d8524a9eb7fe984171d4462cef8eac2e6 Would hit the limit on very large functions (thanks csmith). regalloc: fix defn of spilled var with immediate 2026-02-28T08:12:18+00:00 lemon lsof@mailbox.org 2026-02-28T08:12:18+00:00 urn:sha1:c0db7d92c14b242daf008f7e3731a5d080e23fa1 With `i64 %a = copy 0xabcdef12345`, if `%a` was spilled, this would turn into a `storei64` instruction with an unencondable immediate operand (larger than 32 bits in x86, non-zero in aarch64). ir: regalloc & x86-64 isel bugfixes 2026-02-18T17:19:29+00:00 lemon lsof@mailbox.org 2026-02-18T17:19:29+00:00 urn:sha1:350a56d155e4dc5a5fc48bd2ab724dcbfc103d45 codegen: eliminate redudant consecutive ret sequences 2026-01-08T11:21:40+00:00 lemon lsof@mailbox.org 2026-01-08T11:21:40+00:00 urn:sha1:2769a58ab256522eafec1f833676ceffb4baff24 rega: fix spill copy of i32 -> i64 2026-01-04T07:58:04+00:00 lemon lsof@mailbox.org 2026-01-04T07:58:04+00:00 urn:sha1:b826bf418330b9b13a26195ee541e9e7fd9e77ac backend: separate instrs for integer/float store 2025-12-31T10:13:15+00:00 lemon lsof@mailbox.org 2025-12-31T10:13:15+00:00 urn:sha1:97c6d5c44f30b29b52d1dc431ab9f2df4bb47fd2 ir: use BIT macro for regset (1<< is wrong for u64) 2025-12-23T09:08:34+00:00 lemon lsof@mailbox.org 2025-12-23T09:08:34+00:00 urn:sha1:56cf12a2aca36fabf3c3918947a88cbc4a605bb2