PATCH: PR middle-end/37269: extract_bit_field_1 doesn't handle vector mode properly

[Andrew Pinski]

On Thu, Aug 28, 2008 at 2:32 PM, H.J. Lu <hjl.tools@gmail.com> wrote:

> But my version generates shorter code on my testcase. I will
> compare your testcase on x86.

Well it might generate smaller code but I think there is a missing
optimization.  I think generic vector operands expand to use
BIT_FIELD_REF instead of producing an array which is used for the
extraction at that point which produces worse code in some cases, see
PR 28366.  So my patch is correct, just we are missing out because of
the generic vector operators expansion is doing something that
produces worse code in the first place.

Thanks,
Andrew Pinski