Georg-Johann Lay <avr@xxxxxxxx> writes: > Working out recommendations for a new instruction set architecture (no > silicon yet), I run into the following problem with a port based on > gcc_4_3_3_release: postreload complains >From your description, I would have expected reload to handle this correctly. I don't know why it didn't. The first place to look would be to verify that the REG_CLASS_CONTENTS bitmasks are correct. Next, look at the .greg dump to see if the insn in question required any reloads. If not, the next step may be to debug find_reloads to find out why no reloads were required. This can somewhat tedious; you can set a breakpoint to match the insn UID so that you are looking at the right insn in find_reloads, but following the loops can still take a while. Good luck. I've spent many days on this sort of problem. Ian
