[sdcc-devel] Commit: better static array intialization for DS390

[Kevin V. <ke...@vi...>]

I just comitted a change to improve static array initialization
(currently only for the DS390 port).

If a port has the arrayInitializerSuppported bool in the port structure
set, instead of breaking the array initialization down into a series of
pointer sets, it instead creates a new iCode, ARRAYINIT, which takes one
operand (the array to initialize) and a list of values to initialize the
array with. This allows the port specific code generator to handle this
case, and hopefully generate better code.

See ds390/gen.c:genArrayInit for the '390 implementation. The 8051
version should be similar, but can't make the assumption that the array
in in XDATA space.

The generated code looks much better (and is generated much faster for
large static arrays), but I haven't actually tested it on real hardware
yet. If problems occur, please change the arrayInitializerSuppported
value in the DS390 port structure (ds390/main.c) to FALSE, which should
fix the problem, and let me know.

        Peace,
                Kevin