Hi last night I was optimising my code and I noticed that SDCC generated 'needless' code to save and restore some 'internal' registers.
The interrupt servicer routine prologue contains 00002A C??? F??? 00368 MOVFF r0x00, POSTDEC1 00002E C??? F??? 00369 MOVFF r0x01, POSTDEC1 now as far as I understand r0x00,r0x01 just variables that the compiler generated to hold temp values and as they are not declared global in the assembler no one else can be using them and thus there is no need to save/restore them? How can I get rid of that? How about taking advantage of the 'FAST REGISTER STACK' of PIC16 architecture? I guess I can declare the function naked and resort to had crafter prologue/epilogue, but I'd rather have the compiler take care of that of course, at least as far as possible... br Kusti ' This e-mail may contain confidential or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. We will not be liable for direct, indirect, special or consequential damages arising from alteration of the contents of this message by a third party or as a result of any virus being passed on or as of transmission of this e-mail in general. ------------------------------------------------------------------------------ Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
