On Thu, Jul 15, 2004 at 06:40:43AM -0700, Shawn Jefferson wrote: > Is this optimization intended for other similiar cases > as well? The optimization is intended for things like j = i; if (j == 0) { } Since the value of j is already in the register, there's no need to load it again from the memory cell where is was stored just before. > I solved my immediate problem by moving the store up > several lines in the code, which seems to force the > compiler to reload it and compare. I guess the > optmizer only knows about so many previous > instructions? It's not the number of instructions but the fact that any other code will destroy the contents of the A register, which contains the value of $D104. If the compiler finds that the register contents are destroyed, the following load from $D104 cannot be removed. Regards Uz -- Ullrich von Bassewitz uz@musoftware.de ---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo@musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.Received on Thu Jul 15 16:14:03 2004
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