[Bug target/118000] [avr] memcpy from __flash1 clobbers RAMPZ on EBI devices

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118000

--- Comment #1 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:c94ac10ffc422d4c9a28266b1340382d69518464

commit r15-6175-gc94ac10ffc422d4c9a28266b1340382d69518464
Author: Georg-Johann Lay <a...@gjlay.de>
Date:   Thu Dec 12 16:13:39 2024 +0100

    AVR: target/118000 - Fix copymem from address-spaces.

    * rampz_rtx et al. were missing MEM_VOLATILE_P.  This is needed because
      avr_emit_cpymemhi is setting RAMPZ explicitly with an own insn.

    * avr_out_cpymem was missing a final RAMPZ = 0 on EBI devices.

    This only affects the __flash1 ... __flash5 spaces since the other ASes
    use different routines,

    gcc/
            PR target/118000
            * config/avr/avr.cc (avr_init_expanders) <sreg_rtx>
            <rampd_rtx, rampx_rtx, rampy_rtx, rampz_rtx>: Set MEM_VOLATILE_P.
            (avr_out_cpymem) [ELPM && EBI]: Restore RAMPZ to 0 after.