antcc/amd64/emit.c, branch trunk A little C compiler https://git.lemon.rip/antcc/atom?h=trunk 2025-12-12T16:40:35+00:00 s/amd64/x86_64/ 2025-12-12T16:40:35+00:00 lemon lsof@mailbox.org 2025-12-12T16:40:35+00:00 urn:sha1:24bcc929477751b056e81e7772dc2bb3d11ce4a5 emit: turn ADD -imm into SUB imm 2025-12-12T11:04:38+00:00 lemon lsof@mailbox.org 2025-12-12T11:04:38+00:00 urn:sha1:3cd8e39ff61217a37b41cee47f2682f5291317d6 amd64/emit: change instr desc table a little 2025-12-12T09:46:55+00:00 lemon lsof@mailbox.org 2025-12-12T09:46:55+00:00 urn:sha1:8b5570c855d58ea75d991d027040eb351ffadb80 rename arraylength macro -> countof 2025-12-11T19:43:24+00:00 lemon lsof@mailbox.org 2025-12-11T19:43:24+00:00 urn:sha1:88652eeb10cd9381aafb2d55e9474bb0799630b1 parallel move; implement reg<->stack swp 2025-12-10T20:16:54+00:00 lemon lsof@mailbox.org 2025-12-10T20:16:54+00:00 urn:sha1:97882e8d32fd99e1edaf5361bfd3b6852dbb1a3d misc fixes 2025-12-10T08:57:22+00:00 lemon lsof@mailbox.org 2025-12-10T08:57:22+00:00 urn:sha1:15cf067c4e65c1728c48ab049d48219daa436265 amd64: fix wrong condition code being used for float gth 2025-12-07T11:32:51+00:00 lemon lsof@mailbox.org 2025-12-07T11:32:51+00:00 urn:sha1:66a58cee57b5b3025d441d84e9e0b1df2885118e ughh amd64: use XORPS for floating point negation 2025-12-07T11:29:27+00:00 lemon lsof@mailbox.org 2025-12-07T11:29:27+00:00 urn:sha1:4d4e61e82cd693d2800bf409c8e3dde1ac2b75a5 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. amd64: fix pseudo-push/pop float reg 2025-12-05T18:11:15+00:00 lemon lsof@mailbox.org 2025-12-05T18:11:15+00:00 urn:sha1:bb3bc012c9349c05299069ec19d6bee4abacfb77 With add/sub flags can be trashed which can result in miscompilations, use lea. This shouldn't even exist, need to get rid of xsave/xrestore, but for now fix this kludge amd64: handle unoredered float cmps 2025-12-05T18:10:37+00:00 lemon lsof@mailbox.org 2025-12-05T18:10:37+00:00 urn:sha1:e0e6650883ce3fe9c96c0f1b1770a19de33faacc