On Mon, Feb 11, 2013 at 11:29 AM, Paulo Matos <pma...@broadcom.com> wrote: > Hello, > > I just noticed when moving port from 4.7.2 to HEAD that genattrtab gets into > an infinite loop with: > (define_insn "br_pred" > [(set (pc) > (if_then_else > (match_operator 2 "easy_comparison" > [(match_operand:BI 0 "register_operand" "c") > (const_int 0)]) > (label_ref (match_operand 1 "" "")) > (pc)))] > "" > "brtest" > [(set (attr "length") (const_int 4)) > (set (attr "size") > (if_then_else (eq_attr "length" "4") > (const_string "short") > (const_string "long")))]) > > This is a simplified version of what I have but it manages to trigger the > problem. > I am not sure why this is happening yet but I looked through the gcc > internals manual and I don't think I am doing anything wrong. > > If you confirm that this is a bug and no infinite loop should occur I will > write a bug report. I will, in the meantime, look at the genattrtab.c code > and try to find an explanation for this.
Does it work with -fno-aggressive-loop-optimizations? > Thanks, > > Paulo Matos > >
