ffreep support on Geode LX (XO-1)

Sascha Silbe sascha-ml-ui-sugar-olpc-devel at silbe.org
Thu May 7 14:03:01 EDT 2009

On Tue, May 05, 2009 at 02:20:42PM +0200, Sascha Silbe wrote:

> As ffreep was added to gcc 3.4 [3] and Build 801 seems to use 4.3.0, 
> I'm wondering whether it has been patched/configured in some way to 
> avoid this issue
Further tests have indicated (though not proven, at least for point a) 
a) ffreep is only emitted if -march=native is used (which I added in an 
attempt to fix point b) and
b) xulrunner- mistakenly enables SSE1 (not ffreep, but also 
causing SIGILL) on all x86 hosts [1].

So while still a serious compiler issue (and reported before for a 
different processor [2]), it only seems to happen if additional compiler 
options are passed.

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=491829
[2] http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37179

CU Sascha

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