------- Additional Comments From stevenb at suse dot de 2005-04-23 23:01 ------- Subject: Re: [4.0/4.1 regression] miscompiled pointer subtraction broke Linux kernel
Yeah, well, ehm... The original bug resurfaces with my patch. This happens because is_gimple_reg_rhs only looks at the outermost level of the expression, e.g. it happily accepts "(intD.0) -xD.1566_4" as a valid GIMPLE rhs. Obviously this is wrong. I'm testing a new patch that simply always runs force_gimple_operand on folded, it's not clear to me why we don't do that anyway (it is cheap and safer). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21173
