r192709 - in /trunk/gcc: ChangeLog cfgloop.h cf...

[hubicka@gcc.gnu.org]

Author: hubicka
Date: Tue Oct 23 09:57:36 2012
New Revision: 192709

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192709
Log:

	PR middle-end/54967
	* cfgloopmanip.c (fix_bb_placements): Add loop_closed_ssa_invalidated;
	track basic blocks that moved out of their loops.
	(unloop): Likewise.
	(remove_path): Update.
	(fix_loop_placements): Update.
	* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Add
	loop_closed_ssa_invalidated parameter; pass it around.
	(canonicalize_loop_induction_variables): Update loop closed
	SSA form if needed.
	(tree_unroll_loops_completely): Likewise; do irred update out of
	the outer loop; verify that SSA form is closed.
	* cfgloop.h (unrloop): Update.

	* gfortran.dg/pr54967.f90: New testcase.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr54967.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgloop.h
    trunk/gcc/cfgloopmanip.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivcanon.c