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Re: PR/14899 patch ping^2
It is not. It is created from V2SI_type_node :-/ in
config/rs6000/rs6000.c; my template specialization testcase still fails
without these two lines.
Then lets fix the rs6000 back end.
How? What type shall I base the opaque type on? I thought about void,
but then I have to special case build_vector_type because IIRC
sizeof(void)=GET_MODE_SIZE(VOIDmode)=0. It seems like useless
complication for a feature that almost nobody uses and probably nobody
has ever put much care in designing---surely more complicated than two
lines in comptypes plus three for a comment.