An optimizing compiler for C. https://git.richardqin.org/rcc-project/atom?h=master 2026-08-07T20:14:34Z 2026-08-07T20:14:34Z Richard-Qin-X richard.qin.001@gmail.com 2026-08-07T20:14:34Z urn:sha1:77884c967d1cbc48afcbaef7e5a35adcb3c5da1b 2026-07-31T21:27:13Z Richard-Qin-X richard.qin.001@gmail.com 2026-07-31T21:27:13Z urn:sha1:c759cebef15bdac2ef160065efd116fe6ed540a7 Add arena-owned, address-stable MachineFunction, MachineBasicBlock, and MachineInstr nodes with intrusive layout and instruction lists. Model every required MachineOperand category, reciprocal ties, source state, and immutable per-instruction memory references. Implement physical and virtual register def-use chains whose back-links survive operand vector moves, plus vreg properties, tombstones, live-ins, reserved registers, and atomic CFG updates. Exercise ownership, reallocation, unlink/relink, cross-function rejection, and sanitizer paths.