https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81268
Bug ID: 81268 Summary: [avr] Support __gcc_isr pseudo-instruction for more efficient ISR prologues Product: gcc Version: unknown Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: gjl at gcc dot gnu.org Target Milestone: --- GNU assembler supports the __gcc_isr pseudo-instruction, cf. https://sourceware.org/bugzilla/show_bug.cgi?id=21683 This can be used up reduce overhead in ISR prologues and epilogues due to GCC's modeling of TMP_REG and ZERO_REG as fixed regs und using cc0 to model SREG.