Richard, Zdenek, On 08/28/2011 11:43 AM, Mikael Pettersson wrote: > The recent r178104 change to tree-ssa-loop-ivopts.c broke bootstrap on > i686-linux > because stage2 gcc considers the variable 'comp' used but possibly > uninitialized, > see PR50218. Initializing it to ERROR_MARK solves the problem, and is > consistent > with how other parts of r178104 represent absent/impossible 'comp' values. > > Ok for trunk? (I don't have svn write access.) > > /Mikael > > gcc/ >
If you can ok this, I'll check it in. Thanks, - Tom > 2011-08-20 Mikael Pettersson <mi...@it.uu.se> > > PR bootstrap/50218 > * tree-ssa-loop-ivopts.c (determine_use_iv_cost_condition): Initialize > comp. > > --- gcc-4.7-20110827/gcc/tree-ssa-loop-ivopts.c.~1~ 2011-08-26 > 15:36:28.000000000 +0200 > +++ gcc-4.7-20110827/gcc/tree-ssa-loop-ivopts.c 2011-08-28 > 10:13:34.000000000 +0200 > @@ -4757,7 +4757,7 @@ determine_use_iv_cost_condition (struct > bool ok; > int elim_inv_expr_id = -1, express_inv_expr_id = -1, inv_expr_id; > tree *control_var, *bound_cst; > - enum tree_code comp; > + enum tree_code comp = ERROR_MARK; > > /* Only consider real candidates. */ > if (!cand->iv)
