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Re: [PATCH] Don't optimize function addresses
Jeff Law wrote:
I think John's argument is worth pondering though. I'm having trouble
coming up with any reasonably common case where user code would be
peeking at the alignment of a function (by peeking at the low order bits
of its address). Sure you can do it, but in what context is it
generally useful and are those cases worth worrying about from an
optimization standpoint.
I'd bet that on the ARM people have code that manually looks at the
addresses to determine whether a given pointer is ARM vs. Thumb. I
can't really justify this too well, either, but it seems a shame for the
compiler to lose information that might be useful in performing an
optimization.
--
Mark Mitchell
CodeSourcery
mark@codesourcery.com
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