Messages in this thread |  | | Date | Thu, 7 Sep 2000 19:10:18 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: spin_lock forgets to clobber memory and other smp fixes [was Re: [patch] waitqueue optimization, 2.4.0-test7] |
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On Thu, 7 Sep 2000, Jamie Lokier wrote:
>int *p; >int func() >{ > int x; > x = *p; > __asm__ __volatile__ ("" : : : "memory"); > x = *p; > return x; >} >
Defintely none difference here (-fstrict-aliasing doesn't change anything either).
andrea@inspiron:~ > gcc -v Reading specs from /usr/lib/gcc-lib/i486-suse-linux/2.95.2/specs gcc version 2.95.2 19991024 (release)
Andrea
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