Re: [avr-gcc-list] quality of gcc-4.1 vs 4.2

[Francesco Sacchi]

Rolf Ebert wrote:
> Does anybode else?

Yes, I tried to compile some gcc-4.1.1 projects with 4.2.

The code generated is quite the same as 4.1.1 but RAM occupation is
increased by 256 byte. This is due to __clz_tab linking. This tab is
used frequently by the compiler to Count Leading zeros. That should not
be linked if you use -Os and use a function call instead. But some times
it is, regardless of -Os option. I've posted a bug report and trying to
build a suitable testcase, but I've not so much time right now.

If somebody else would try, will be very appreciated.

--
_|/ Francesco Sacchi - Develer S.r.l., R&D dept.
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