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Re: [patch] Remove dead branches in unrolling/unswitching on trees

From: Diego Novillo <dnovillo at redhat dot com>
To: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
Cc: gcc-patches at gcc dot gnu dot org
Date: Fri, 02 Feb 2007 17:21:22 -0500
Subject: Re: [patch] Remove dead branches in unrolling/unswitching on trees
References: <20070116002624.GA19979@atrey.karlin.mff.cuni.cz>

Zdenek Dvorak wrote on 01/15/07 19:26:

	* cfgloopmanip.c (loop_delete_branch_edge): Removed.
	(remove_path): Use can_remove_branch_p and remove_branch instead
	of loop_delete_branch_edge.
	* tree-ssa-loop-manip.c (scale_dominated_blocks_in_loop): New function.
	(tree_transform_and_unroll_loop): Remove dead branches immediately.
	Update profile using scale_dominated_blocks_in_loop.
	* cfghooks.c (can_remove_branch_p, remove_branch): New functions.
	* cfghooks.h (struct cfg_hooks): Add can_remove_branch_p.
	(can_remove_branch_p, remove_branch): Declare.
	* tree-cfg.c (tree_can_remove_branch_p): New function.
	(tree_cfg_hooks): Add tree_can_remove_branch_p.
	* cfgrtl.c (rtl_can_remove_branch_p): New function.
	(rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Add rtl_can_remove_branch_p.

OK.

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