• Andi Kleen's avatar
    [PATCH] x86: Use -maccumulate-outgoing-args · cdfce1f5
    Andi Kleen authored
    This avoids some problems with gcc 4.x and earlier generating
    invalid unwind information. In 4.1 the option is default
    when unwind information is enabled.
    
    And it seems to generate smaller code too, so it's probably
    a good thing on its own. With gcc 4.0:
    
    i386:
    4683198  902112  480868 6066178  5c9002 vmlinux (before)
    4449895  902112  480868 5832875  5900ab vmlinux (after)
    
    x86-64:
    4939761 1449584  648216 7037561  6b6279 vmlinux (before)
    4854193 1449584  648216 6951993  6a1439 vmlinux (after)
    
    On 4.1 it shouldn't make much difference because it is
    default when unwind is enabled anyways.
    
    Suggested by Michael Matz and Jan Beulich
    
    Cc: jbeulich@novell.com
    Signed-off-by: default avatarAndi Kleen <ak@suse.de>
    cdfce1f5
Makefile 4.54 KB