* Makefile.in (OBJS): Add gimple-ssa-warn-alloca.o.
	* passes.def: Add two instances of pass_walloca.
	* tree-pass.h (make_pass_walloca): New.
	* gimple-ssa-warn-walloca.c: New file.
	* doc/invoke.texi: Document -Walloca, -Walloca-larger-than=, and
	-Wvla-larger-than= options.

From-SVN: r241318