From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Hadsell To: EGCS mailing list Subject: Re: sizeof bool > sizeof int ?!? Date: Thu, 13 Aug 1998 17:47:00 -0000 Message-id: <35D36C50.52BF@blueskystudios.com> References: <1083.490T1577T7154237@kampsax.k-net.dk> <35A0EDDC.167E@blueskystudios.com> X-SW-Source: 1998-08/msg00399.html Richard Hadsell wrote: > > I realize that some (all?) alpha processors do not handle 1-byte data > efficiently. I hope that the situation will change with future > versions. But it's hard to believe that alphas don't have an efficient > instruction set for (4-byte) int data. What about short data? Are they > handled as badly as 1-byte data? > > I would prefer that bool be implemented with the best performance in > mind, including the effects of using memory efficiently, too. I haven't seen any comments from the compiler group on their decision to implement bool as an 8-byte datum on alphas. If the performance is so much better that it is worth the cost in memory usage, why is an int only 4 bytes. Since the standard allows it to be as big as a long, why not? I thought that we could expect an int to be whatever size gives the best integer performance. So I don't understand why a bool is any longer than an int. What other considerations were there in making the decision? -- Dick Hadsell 914-381-8400 x5446 Fax: 914-381-9790 Reply-to: hadsell@blueskystudios.com Blue Sky | VIFX http://www.bluesky-vifx.com 1 South Road, Harrison, NY 10528