PATCH RFA: Split stack [7/7]: tests

[Ian Lance Taylor]

This is the seventh and last of the -fsplit-stack patches.  This patch
provides four test cases for different aspects of the functionality.

I will commit this patch when the other patches are approved.  Comments
welcome.

Ian


2010-09-21  Ian Lance Taylor  <iant@google.com>

	* lib/target-supports.exp (check_effective_target_split_stack):
	New procedure.
	* gcc.dg/split-1.c: New test.
	* gcc.dg/split-2.c: New test.
	* gcc.dg/split-3.c: New test.
	* gcc.dg/split-4.c: New test.


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