Hi, wanted to thank all of you for your rapid and excellent help! Compiling with --nogcse made everything work, with a 5% (if not more) codesize increase, which put me right up to full. Reading the docs and using #pragma to turn it off for my (pretty long) main() solved it with little codesize increase.
Back on track! Thanks again everyone. Now for a 2nd question... I recently fixed a bug due to what I think is incorrect type promotion. Given the polish SDCC has I suspect it is my misunderstanding, but I wanted to ask. unsigned long var32; unsigned short var16; If I do this: var32= var16 * 60; I get a 16-bit multiply, not a 32-bit. This caused an overflow and a bug. doing this: var32= *(unsigned long)var16) * 60; solves that. But, I thought that there was automatic type promotion such that if the l-value is 32bits, then var16 would be promoted to 32bits prior to the multiply. Am I just wrong here? Is there any way to make SDCC do it that way? I'd rather waste some codespace/execution speed and never have an unanticipated overflow... Thanks all J > Message: 3 Date: Tue, 09 Sep 2008 11:31:31 -0500 From: Bobby Garner > <[EMAIL PROTECTED]> Subject: Re: [Sdcc-user] Emergency help... linker > memory error with DSEG To: sdcc-user@lists.sourceforge.net > Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; > charset="iso-8859-1" > > 'Spill loactions' is mentioned one time in the manual: "3.2.8 > Optimization Options --nogcse Will not do global subexpression > elimination, this option may be used when the compiler creates > undesirably large stack/data spaces to store compiler temporaries > (spill locations, sloc). A warning message will be generated when > this happens and the compiler will indicate the number of extra bytes > it allocated. It is recommended that this option NOT be used, > #pragma nogcse can be used to turn off global subexpression > elimination for a given function only." > > Would it help to use this option, maybe as a test? > > Bobby > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
