Followup - it seems that CANNOT_CHANGE_MODE_CLASS governs whether these subregs are attempted. It's not clear from the documentation that it does this.
- Re: subreg_get_info vs mode restrictions in regis... DJ Delorie
- Re: subreg_get_info vs mode restrictions in ... DJ Delorie
- Re: subreg_get_info vs mode restrictions in ... DJ Delorie
- Re: subreg_get_info vs mode restrictions... Ian Lance Taylor
- Re: subreg_get_info vs mode restrictions... Rask Ingemann Lambertsen