Hi, I'm doing some modifections to the avr backend to suit my needs. I would like to add new constrainst for individual registers to use in inline assembly blocks and i was wondering what is the correct way of doing this? in gcc-4.5, i've added a new class for each register to reg_class, REG_CLASS_NAMES and REG_CLASS_CONTENTS, made a need constrainst for each register using its class and it worked as expected. i tried to do the same in gcc-4.7 and i got: internal compiler error: in find_costs_and_classes, at ira-costs.c:1704. So i was wondering whether i did the wrong thing or just forgot to update some target hook. Thanks, Ilya.
