------- Comment #2 from uweigand at gcc dot gnu dot org 2006-05-31 16:59 ------- I'm not sure (subreg:SF (const_int)) is canonical RTL, I haven't seen subregs of anything but REG or MEM.
In any case, I don't really see what this would buy us over an UNSPEC -- will the generic simplifier be able to evaluate this by re-interpreting the bit pattern as float according to the target representation? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27842