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RE: [PATCH, combine] Try REG_EQUAL for nonzero_bits


> From: Jeff Law [mailto:law@redhat.com]
> Sent: Saturday, April 25, 2015 3:00 AM
> Do you have a testcase where this change can result in better generated
> code.  If so please add that testcase.  It's OK if it's ARM specific.

Hi Jeff,

Last time I tried I couldn't reduce the code to a small testcase but if I remember
well it was mostly due to the problem of finding a good test for creduce
(zero extension is not unique enough). I'll try again with a more manual approach
and get back to you.

Best regards,

Thomas




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