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author	ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
	Mon, 17 Sep 2012 14:50:13 +0000 (14:50 +0000)
committer	ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
	Mon, 17 Sep 2012 14:50:13 +0000 (14:50 +0000)
commit	2ebfc881dcb0e21ed61983433f570df9118325a4
tree	d096ec551125ec07018795cb4a794091435c90a9	tree \| snapshot
parent	a6e7114223dac3eb9a70fedb120c83d79deca89b	commit \| diff

* tree-cfgcleanup. (cleanup_control_expr_graph) <GIMPLE_COND>: Remove
code doing propagation from degenerate PHI nodes.
* tree-ssa-loop-ivcanon.c (propagate_into_all_uses): New function.
(propagate_constants_for_unrolling): Likewise.
(tree_unroll_loops_completely): If the current loop has been unrolled
and its father isn't the entire function, propagate constants within
the new basic blocks by means of propagate_constants_for_unrolling.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@191387 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gnat.dg/loop_optimization12.adb	[new file with mode: 0644]	blob
gcc/testsuite/gnat.dg/loop_optimization12.ads	[new file with mode: 0644]	blob
gcc/tree-cfgcleanup.c		diff \| blob \| blame \| history
gcc/tree-ssa-loop-ivcanon.c		diff \| blob \| blame \| history

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