сб, 16 нояб. 2024 г. в 18:01, Georg-Johann Lay <a...@gjlay.de>:
> > Some passes like CSE kick-up when they see a (clobber (match_dup)) in an > insn pattern, like it is the case for avr.md's *tablejump. > > This patch uses a new "scratch_operand" instead. As the clobbered > entity is known, the casesi expander now uses REG_Z or scratch:HI. > The latter means that the entity is not clobbered. > > The avr-casesi pass and optimization has to be adjusted to the new > anatomy of the casesi / tablejump insns. > > Test results are looking good: > > With -mno-lra there is no change for atmega8, atmega128, atmega2560. > > With -mlra, the ICEs as of PR116781 go away. > > Ok for trunk? Please apply. Denis.
