On Mon, 18 Oct 1999 12:16:32 +0100, Mathew Hendry wrote:
>> From: Richard A. Smith [mailto:[EMAIL PROTECTED]]
>>
>> Perhaps we should examine the compiler assembly output of the 2 test
>> cases.
>/* "array" version */
>L19:
> addl (%ecx,%edx,4),%eax
> subl $1,%edx
> jnc L19
>L17:
> ret
>/* "pointer" version */
>L25:
> addl $-4,%ecx
> addl (%ecx),%eax
> subl $1,%edx
> jnc L25
>L23:
> ret
Well there's the answer. The pointer version has an extra addl
instruction. Does this hold true for an array of floats as well? (I
would check myself but I don't have gcc here at work)
--
Richard A. Smith Bitworks, Inc.
[EMAIL PROTECTED] 501.521.3908
Sr. Design Engineer http://www.bitworks.com
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