https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116781
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Georg-Johann Lay <g...@gcc.gnu.org>: https://gcc.gnu.org/g:083892ba18452383a1f240072d2a96dd72321a4f commit r15-5353-g083892ba18452383a1f240072d2a96dd72321a4f Author: Georg-Johann Lay <a...@gjlay.de> Date: Sat Nov 16 14:26:02 2024 +0100 AVR: target/116781 - Fix ICE due to (clobber (match_dup)) in tablejump. This patch avoids (clobber (match_dup)) in insn patterns for tablejump. The machine description now uses a scratch_operand instead which is possible since the clobbered entity is known in advance: 3-byte PC : REG_Z 2-byte PC + JMP : REG_Z 2-byte PC + RJMP : None, hence scratch:HI is used. The avr-casesi pass and optimization has to be adjusted to the new patterns. PR target/116781 gcc/ * config/avr/avr.md (*tablejump_split, *tablejump): Add operand 2 as a "scratch_operand" instead of a match_dup. (casesi): Adjust expander operands accordingly. Use a scratch:HI when the jump address is not clobbered. This is the case for a 2-byte PC + has no JMP instruction. In all the other cases, the affected operand is REG_Z (reg:HI 30). (casesi_<mode>_sequence): Adjust matcher to new anatomy. * config/avr/avr-passes.cc (avr_is_casesi_sequence) (avr_is_casesi_sequence, avr_optimize_casesi) (avr_casei_sequence_check_operands): Adjust to new anatomy.
