On Wed, Feb 14, 2007 at 05:31:36PM +0000, Sami Khawam wrote: > (define_insn "scale_28_4" > [(set (match_operand:SI 0 "register_operand" "=r") > (ior:SI > (ashift:SI (match_operand:SI 1 "register_operand" "r") > (const_int 28 )) > (lshiftrt:SI (match_operand:SI 2 "register_operand" "r") > (const_int 4)) > ))] > "" > "SCALE_28_4 tout= %0 in1= %1 tin2= %2" > [(set_attr "type" "logic") > (set_attr "length" "1")]) > > Instruction canonicalization doesn't work, since as explained in > http://gcc.gnu.org/onlinedocs/gccint/Insn-Canonicalizations.html > it only works if the second operand is a constant.
It is not clear what isn't being canonicalized. Please provide an example of an insn which isn't canonical and what it should look like canonicalized. -- Rask Ingemann Lambertsen
