re PR middle-end/42196 (ICE when SRAing partial assigments to complex number)

2009-11-30  Martin Jambor  <mjambor@suse.cz>

	PR middle-end/42196
	* tree-sra.c (struct access): New field grp_different_types.
	(dump_access): Dump grp_different_types.
	(compare_access_positions): Prefer scalars and vectors over other
	scalar types.
	(sort_and_splice_var_accesses): Set grp_different_types if appropriate.
	(sra_modify_expr): Use the original also when dealing with a complex
	 or vector group accessed as multiple types.

	* testsuite/gcc.c-torture/compile/pr42196-1.c: New test.
	* testsuite/gcc.c-torture/compile/pr42196-2.c: New test.
	* testsuite/gcc.c-torture/compile/pr42196-3.c: New test.

From-SVN: r154834