2016-11-20  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* fold-const.c (fold_comparison): Ignore EXACT_DIV_EXPR.
	* match.pd (A /[ex] B CMP C): New simplifications.

gcc/testsuite/
	* gcc.dg/tree-ssa/cmpexactdiv.c: New file.

From-SVN: r242638