gcc 4.3.0 i386 default question

[Joel Sherrill]

Hi,

Did the default i386 CPU model that gcc generates
code for change between 4.2.x and 4.3.0?  I didn't
see anything in the release notes that jumps out at
me about this. 

Using i386-rtems4.9 as the target, I was running
code compiled by gcc 4.3.0 on a  vanilla i386 and
was getting illegal instruction  exceptions.  I looked
at the assembly and noticed instructions which were
not on the i386.  Obviosuly, when I added -mtune=i386
and the issue went away.

This probably impacts no one on a GNU/Linux computer
since very few of those are base i386's anymore.  Just
venerable embedded systems. :)


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joel.sherrill@OARcorp.com        On-Line Applications Research
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