DJ Delorie <[EMAIL PROTECTED]> writes: >> One thing to do is to call simplify_gen_subreg. > > As I noted, that may return NULL, which is fatal in the case I'm > referencing.
You mentioned simplify_subreg. simplify_gen_subreg will only return NULL when the RTL is already bogus. >> But I don't think that will help. I think this code is simply >> incorrect. It seems to assume that op_mode is at least as large as >> GET_MODE (xop0), probably because that will be the case on the m68k. > > Do we want to just fail that function if we detect the > smaller-than-mode case? Otherwise, I've been using the below function > to constuct endian-aware subregs, it seems to work. I think that something like your function is correct, except that it should call simplify_gen_subreg rather than gen_rtx_SUBREG. Ian
