[Bug target/65296] [avr] fix various issues with specs file generation

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65296

--- Comment #5 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Wed Mar 11 18:51:09 2015
New Revision: 221355

URL: https://gcc.gnu.org/viewcvs?rev=221355&root=gcc&view=rev
Log:
gcc/
    PR target/65296
    * configure.ac [avr]: Check as for options -mrmw, --mlink-relax.
    * configure: Regenerate.
    * config.in: Regenerate.
    * doc/invoke.texi (AVR Options) [-mrmw]: Document it.
    [-mn-flash]: Document it.
    [__AVR_ARCH__]: Document avrtiny.
    * config/avr/gen-avr-mmcu-specs.c (config.h): Include it.
    (*asm_relax): Only define spec if HAVE_AS_AVR_MLINK_RELAX_OPTION.
    (*asm_rmw): Only define spec if HAVE_AS_AVR_MRMW_OPTION.
gcc/testsuite/
    PR target/65296
    * gcc.target/avr/tiny-memx: Use -mmcu instead of -march.
    * gcc.target/avr/tiny-caller-save.c: Same.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config.in
    trunk/gcc/config/avr/gen-avr-mmcu-specs.c
    trunk/gcc/configure
    trunk/gcc/configure.ac
    trunk/gcc/doc/invoke.texi
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/avr/tiny-caller-save.c
    trunk/gcc/testsuite/gcc.target/avr/tiny-memx.c