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Re: recent troubles with float vectors & bitwise ops
On 8/22/07, Andrew Pinski <pinskia@gmail.com> wrote:
> Which hardware (remember GCC is a generic compiler)? VMX/Altivec and
> SPU actually does not have different instructions for bitwise
> and/ior/xor for different vector types (it is all the same
> instruction). I have ran into ICEs with even bitwise on vector
> float/double on x86 also in the past which is the other reason why I
> disabled them. Since this is an extension, it would be nice if it was
> nicely defined extension which means disabling them for vector
> float/double.
One more note, the "C/C++ Language extensions for the CBEA"
specifications, says that the bitwise operators don't work on vector
float/double but do work on the integer vector types. So the other
reason why this change I did was to make us more conforming with that
standard (yes I worked on that spec but I did not write that part).
-- Pinski