[Bug target/51002] SP_H register is used even on targets that do not have it (eg attiny26)

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51002

--- Comment #4 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-12-06 
15:04:17 UTC ---
Author: gjl
Date: Tue Dec  6 15:04:09 2011
New Revision: 182052

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182052
Log:
libgcc/
    Forward-port from gcc-4_6-branch r181936 2011-12-02.

    PR target/51345
    PR target/51002
    * config/avr/lib1funcs.S (__prologue_saves__,
    __epilogue_restores__, __divdi3_moddi3): Enclose parts using
    __SP_H__ in !defined (__AVR_HAVE_8BIT_SP__).  Add FIXME comments.

gcc/
    Forward-port from gcc-4_6-branch r181936 2011-12-02.

    PR target/51002
    * config/avr/avr.md (movhi_sp_r): Set insn condition to
    !AVR_HAVE_8BIT_SP.
    * config/avr/avr.c (output_movhi): Use "clr%B0" instead of "in
    %B0,__SP_H__" if AVR_HAVE_8BIT_SP.
    (avr_file_start): Only print "__SP_H__ = 0x3e" if !AVR_HAVE_8BIT_SP.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr.c
    trunk/gcc/config/avr/avr.md
    trunk/libgcc/ChangeLog
    trunk/libgcc/config/avr/lib1funcs.S