[PATCH][ARM] one_cmpldi2 in NEON

[Andrew Stubbs]

This patch adds a one's complement pattern for doing DImode 'not' in 
NEON registers.

There are already patterns for doing one's complement of vectors, and 
even though it boils down to the same instruction, the DImode case was 
missing.

The patch needs to be a little more complicated than using a mode 
iterator that includes DI because it needs to coexist with the non-neon 
one_cmpldi2 (renamed by this patch to "one_cmpldi2_core").

OK for when stage 1 opens again?

Andrew
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