[patch] Allow merging blocks with phi nodes

[Richard Henderson]

On Mon, May 16, 2005 at 09:18:22PM +0200, Zdenek Dvorak wrote:
> 	* tree-cfg.c (tree_can_merge_blocks_p): Allow phi nodes in the
> 	merged block.
> 	(replace_uses_by): New function.
> 	(tree_merge_blocks): Eliminate the phi nodes in the merged block.
> 	* tree-flow.h (fold_stmt_inplace): Declare.
> 	* tree-ssa-ccp.c (fold_stmt_inplace): New function.
> 	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Update dominance
> 	info after cfg cleanup.

Ok.


r~