[Bug target/43746] -fmerge-constants and -fmerge-all-constants don't work at AVR target

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43746

--- Comment #7 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-09-12 10:06:52 UTC ---
Author: gjl
Date: Mon Sep 12 10:06:46 2011
New Revision: 178779

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178779
Log:
gcc/
    PR target/43746
    * config/avr/avr.c (AVR_SECTION_PROGMEM): New Define.
    (progmem_section): New Variable.
    (avr_asm_init_sections): Initialize it.
    (TARGET_ASM_SELECT_SECTION): Define to...
    (avr_asm_select_section): ... this new Function.
    (avr_replace_prefix): New Function.
    (avr_asm_function_rodata_section): Use it.
    (avr_insert_attributes): Don't add section attribute for PROGMEM.
    (avr_section_type_flags): Use avr_progmem_p instead of section
    name to detect if object is in PROGMEM.
    (avr_asm_named_section): Set section name prefix for objects in
    PROGMEM.

testsuite/
    PR target/43746
    * testsuite/gcc.target/avr/torture/avr-torture.exp
    (AVR_TORTURE_OPTIONS): Add test cases "-O2 -fdata-sections" and
    "-O2 -fmerge-all-constants".


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/avr/torture/avr-torture.exp