------- Additional Comments From jsm at polyomino dot org dot uk 2004-10-20 22:41 ------- Subject: Re: usual arithmetic conversion not applying correctly
On Wed, 20 Oct 2004, schlie at comcast dot net wrote: > It's a pretty major screw-up to presume > all target machines are large, and then to encode that presumption into > C's front end; not to mention it seems pretty stupid to do, and then This is not a GCC presumption, it is a property of the C language that there are certain promotions that may not be optimally efficient for 8-bit targets. If there is a "major screw-up", it is either in the choice to use a language designed for systems that are at least 16-bit on an 8-bit target, or in the language design if you think 8-bit targets should have been given greater importance when the language was being standardised in the 1980s; it is nothing to do with the front end. The AVR target has a -mint8 option which puts the compiler in a nonconforming mode with 8-bit int, which might however give you better code than you can get with standard C on an 8-bit target. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18065
