On Wed, Oct 10, 2012 at 11:25 PM, Teresa Johnson <tejohn...@google.com> wrote: > What I did to address this is to call get_attr_mode from the machine model > to get the actual mode of the insn. In this case, it returns MODE_SI. > There doesn't seem to be any code that maps from the attr_mode (MODE_SI) > to the machine_mode (SImode), so I am doing the mapping in ree.c before > the comparison with the mode from the second extend.
The "mode" attribute is not a default attribute, i.e. targets are free to define an attribute mode with target-specific semantics. So AFAIU, I don't think you can just use the i386 "mode" attribute in ree.c. So maybe you need a target hook, something similar to mode_rep_extended. Ciao! Steven
