[Bug target/40657] allocate local variables with fewer instructions

[aldot at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40657

Bernhard Reutner-Fischer <aldot at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldot at gcc dot gnu.org

--- Comment #12 from Bernhard Reutner-Fischer <aldot at gcc dot gnu.org> 2012-06-20 18:24:29 UTC ---
Fixed?


$ arm-oe-linux-uclibceabi-gcc -Os -mthumb -march=armv5te -S pr40657.c -o -
    .arch armv5te
    .fpu softvfp
    .eabi_attribute 20, 1
    .eabi_attribute 21, 1
    .eabi_attribute 23, 3
    .eabi_attribute 24, 1
    .eabi_attribute 25, 1
    .eabi_attribute 26, 2
    .eabi_attribute 30, 4
    .eabi_attribute 34, 0
    .eabi_attribute 18, 4
    .code    16
    .file    "pr40657.c"
    .text
    .align    1
    .global    foo
    .code    16
    .thumb_func
    .type    foo, %function
foo:
    push    {r0, r1, r2, lr}
    add    r0, sp, #4
    bl    bar
    @ sp needed for prologue
    ldr    r0, [sp, #4]
    pop    {r1, r2, r3, pc}
    .size    foo, .-foo
    .ident    "GCC: (GNU) 4.7.1 20120421 (prerelease)"
    .section    .note.GNU-stack,"",%progbits