* gcc.dg/attr-weakref-1.c: Skip on AIX.
* gcc.dg/torture/pr53922.c: Skip on AIX.
* lib/file-format.exp (gcc_target_object_format): AIX is COFF.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202261 138bc75d-0d04-0410-961f-82ee72b054a4
2013-09-04  Easwaran Raman  <eraman@google.com>

	PR middle-end/57370
	PR tree-optimization/58011
	* tree-ssa-reassoc.c (get_stmt_uid_with_default): New function,
	(build_and_add_sum): Use it.
	(appears_later_in_bb): Simplify code.

gcc/testsuite/ChangeLog:
2013-09-04  Easwaran Raman  <eraman@google.com>

	PR middle-end/57370
	PR tree-optimization/58011
	* gfortran.dg/reassoc_12.f90: New testcase.
	* gcc.dg/tree-ssa/reassoc-31.c: New testcase.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202262 138bc75d-0d04-0410-961f-82ee72b054a4