Do not invoke SCEV if it will use a different range query.

SCEV always uses the current range_query object.
Ranger's cache uses a global value_query when propagating cache values to
avoid re-invoking ranger during simple vavhe propagations.
when folding a PHI value, SCEV can be invoked, and since it alwys uses
the current range_query object, when ranger is active this causes the
undesired re-invoking of ranger during cache propagation.

This patch checks to see if the fold_using_range specified range_query
object is the same as the one SCEV uses, and does not invoke SCEV if
they do not match.

	PR tree-optimization/115221
	gcc/
	* gimple-range-fold.cc (range_of_ssa_name_with_loop_info): Do
	not invoke SCEV is range_query's do not match.
	gcc/testsuite/
	* gcc.dg/pr115221.c: New.

0 files changed, 0 insertions, 0 deletions