[Bug other/109910] GCC prologue/epilogue saves/restores callee-saved registers that are never changed

2023-08-04 Thread gjl at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109910 Georg-Johann Lay changed: What|Removed |Added Last reconfirmed||2023-08-04

[Bug other/109910] GCC prologue/epilogue saves/restores callee-saved registers that are never changed

2023-05-19 Thread gjl at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109910 --- Comment #1 from Georg-Johann Lay --- Note that df_regs_ever_live_p may be used before reload_completed, for example in INITIAL_ELIMINATION_OFFSET. Hence, scanning the insns by hand using, say, note_stores, does not work because reload