2017-10-11  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* fold-const.c (fold_binary_loc) [X +- Y CMP X]: Move ...
	* match.pd: ... here.
	((T) X == (T) Y): Relax condition.

gcc/testsuite/
	* gcc.dg/Wstrict-overflow-7.c: Xfail.
	* gcc.dg/pragma-diag-3.c: Likewise.

From-SVN: r253642