-Wcast-align and performance

[John Boncek]

John Boncek wrote:
> 
> I have turned on -Wcast-align in a big C++ project for ARM PXA270
> architecture and am receiving many warnings of the form:
> 
> warning: cast from `BYTE*' to `short int*' increases required alignment of
> target type
> 
> This sounds like there will be a performance penalty to generate the
> correct alignment for this.  Is that correct?
> 
> Thanks for your attention.
> 
> John Boncek
> 

We've been building this with -Wall, which, as previous posters have
observed, doesn't turn on many of the more obscure warnings such as this
one.  Are there any (other) warnings which have direct performance
implications?

John Boncek
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