re PR c/84100 (Function __attribute__((optimize(align-loops=32))) gives spurious warning and is ignored)

	PR c/84100
	* common.opt (falign-functions=, falign-jumps=, falign-labels=,
	falign-loops=): Add Optimization flag.

	* gcc.dg/pr84100.c: New test.

From-SVN: r257219