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Re: [RP] register variable considered BAD
From: |
shawn |
Subject: |
Re: [RP] register variable considered BAD |
Date: |
Mon, 07 May 2001 23:13:19 -0700 |
>
>Was reading the Gnu CC manual again. It had this interesting
>tidbit: When the address of a variable is taken, it will never
>be assigned a register. EVER. Even if the register keyword
>was used. I believe this is the case with the code in ratpoison
>that does use register, and that would be why I noticed no
>code difference in the generated object files when I compiled
>with and without the register keyword. If you want to actually
>use registers, don't give the compiler hints, use inline assembly.
Hmm, what about this:
void *
xmalloc (size_t size)
{
#ifdef YOU_ARE_DJW
void *value = malloc (size);
#else
register void *value = malloc (size);
#endif
if (value == 0)
fatal ("Virtual memory exhausted");
return value;
}
That should satisfy everyone...