On Tue, 11 Nov 2003, Thies C. Arntzen wrote:
> still working onm this php-compiler;-)
> thanx for all the replies on my last issue..
>
> next question: calling conventions.
> in the calling_convertion.pod you say that the callee should
> do a saveall, restoreall. shouldn't imcc be smart about those
> things and save all registers that are used in a function?
If you take a look at the generated bytecode (try a "make disassemble" to
get the pbc disassembler) you'll see that it does do savetops where
needed. Registers 0-15 are mor or less scratch, though we should make that
clearer. (FWIW, saving all the registers of a particular type is faster
than saving three or more individual registers individually)
Dan
--------------------------------------"it's like this"-------------------
Dan Sugalski even samurai
[EMAIL PROTECTED] have teddy bears and even
teddy bears get drunk
