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| From: | Brian Inglis <Brian DOT Inglis AT SystematicSW DOT Invalid> |
| Newsgroups: | comp.os.msdos.djgpp |
| Subject: | Re: gcc 4.10 thinks it is 5x faster than 4.01 |
| Organization: | Systematic Software |
| Message-ID: | <4jfh22lcje6dd2icmigtf2s3c7n19sigi8@4ax.com> |
| References: | <1143502002 DOT 445175 DOT 231640 AT v46g2000cwv DOT googlegroups DOT com> |
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| Lines: | 26 |
| Date: | Tue, 28 Mar 2006 04:42:15 GMT |
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| X-Complaints-To: | abuse AT shaw DOT ca |
| X-Trace: | pd7tw2no 1143520935 64.59.135.176 (Mon, 27 Mar 2006 21:42:15 MST) |
| NNTP-Posting-Date: | Mon, 27 Mar 2006 21:42:15 MST |
| To: | djgpp AT delorie DOT com |
| DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
| Reply-To: | djgpp AT delorie DOT com |
On 27 Mar 2006 15:26:42 -0800 in comp.os.msdos.djgpp, "Bob W"
<dontsend AT operamail DOT com> wrote:
>After checking out gcc version 4.10 the first test already
>revealed a flaw:
>
>My test-program reported that it was running about
>5 times as fast as compared to its 4.01 compiled version.
>
>As I don't believe in miracles, I suspect that a bug has
>crawled into the clock() function and/or the CLOCKS_PER_SEC
>definition.
>
>I have further noticed a 6% jitter in the values which
>are returned by clock() after about 5 seconds. But this is
>not necessarily related to the above mentioned problem.
>
>(Console window, Win XP-P)
Did you recompile and rebuild libc with gcc 4.01 and 4.10?
--
Thanks. Take care, Brian Inglis Calgary, Alberta, Canada
Brian DOT Inglis AT CSi DOT com (Brian[dot]Inglis{at}SystematicSW[dot]ab[dot]ca)
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