------- Comment #20 from jakub at gcc dot gnu dot org 2006-11-15 07:37 ------- Looking at i386 backend, also (const (plus (unspec (something)) (const_int))) is special (a whole bunch of routines rely on the unspec being surrounded by CONST, optionally with a PLUS in there). Not sure if make_tree should try to fallback whenever it sees this too (safer option), or if it e.g. can return dummy VAR_DECL with (const (unspec (something))) plus the constant. An, other backends need auditing what exactly they do with CONST.
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