[Bug target/52741] [avr] -mtiny-stack must not make assumptions on upper 8 bits of SP resp. FP

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52741

--- Comment #1 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-03-28 
10:07:06 UTC ---
Author: gjl
Date: Wed Mar 28 10:06:51 2012
New Revision: 185912

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=185912
Log:
    PR target/52741
    Revert r181936 from 2011-12-02 for:
    * config/avr/libgcc.S (__prologue_saves__, __epilogue_restores__)
    * config/avr/avr.md (movhi_sp_r_irq_off, movhi_sp_r_irq_on)
    * config/avr/avr.c (output_movhi, avr_file_start)


Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/config/avr/avr.c
    branches/gcc-4_6-branch/gcc/config/avr/avr.md
    branches/gcc-4_6-branch/gcc/config/avr/libgcc.S