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r112639 - in /branches/gcc-4_1-branch/gcc: Chan...


Author: bonzini
Date: Mon Apr  3 13:37:07 2006
New Revision: 112639

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=112639
Log:
2006-04-03  Paolo Bonzini  <bonzini@gnu.org>

	PR tree-optimization/26830
	* tree-cfg.c (tree_duplicate_sese_region): Do not update SSA.
	* tree-ssa-loop-ch.c (copy_loop_headers): Count successfully duplicated
	headers and, if there was any, update SSA at the end.
        
	Backport from mainline:
	2006-03-30  Paolo Bonzini  <bonzini@gnu.org>

	* tree-ssa-copy.c (copy_prop_visit_assignment): Do not check loop depth.
	(copy_prop_visit_stmt): Remove write-only variable ann.
	(init_copy_prop): Check variable loop depth here.  Do not simulate
	memory-tag and virtual operand PHIs except for store copy prop.


Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/tree-cfg.c
    branches/gcc-4_1-branch/gcc/tree-ssa-copy.c
    branches/gcc-4_1-branch/gcc/tree-ssa-loop-ch.c


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