re PR tree-optimization/44914 (ICE: in calc_dfs_tree, at dominance.c:395 with -fipa-sra -fnon-call-exceptions)

2010-07-23  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/44914
	* tree-sra.c (sra_modify_function_body): Return true if CFG was
	changed, add purging dead eh edges.
	(ipa_sra_modify_function_body): Return true if CFG was changed,
	simplify purging dead eh edges.
	(modify_function): Return true if CFG was changed.
	(perform_intra_sra): Add TODO_cleanup_cfg to the return value if CFG
	was changed.
	(ipa_early_sra): Likewise.

	* testsuite/g++.dg/tree-ssa/pr44914.C:  New test.

From-SVN: r162468