Implement -Winfinite-recursion [PR88232].

Implement -Winfinite-recursion [PR88232].

Resolves:
PR middle-end/88232 - Please implement -Winfinite-recursion

gcc/ChangeLog:

	PR middle-end/88232
	* Makefile.in (OBJS): Add gimple-warn-recursion.o.
	* common.opt: Add -Winfinite-recursion.
	* doc/invoke.texi (-Winfinite-recursion): Document.
	* passes.def (pass_warn_recursion): Schedule a new pass.
	* tree-pass.h (make_pass_warn_recursion): Declare.
	* gimple-warn-recursion.c: New file.

gcc/c-family/ChangeLog:

	PR middle-end/88232
	* c.opt: Add -Winfinite-recursion.

gcc/testsuite/ChangeLog:

	PR middle-end/88232
	* c-c++-common/attr-used-5.c: Suppress valid warning.
	* c-c++-common/attr-used-6.c: Same.
	* c-c++-common/attr-used-9.c: Same.
	* g++.dg/warn/Winfinite-recursion-2.C: New test.
	* g++.dg/warn/Winfinite-recursion-3.C: New test.
	* g++.dg/warn/Winfinite-recursion.C: New test.
	* gcc.dg/Winfinite-recursion-2.c: New test.
	* gcc.dg/Winfinite-recursion.c: New test.