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r149199 - in /trunk/gcc: ChangeLog tree-ssa-dce.c
- From: hubicka at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Thu, 02 Jul 2009 22:56:21 -0000
- Subject: r149199 - in /trunk/gcc: ChangeLog tree-ssa-dce.c
Author: hubicka
Date: Thu Jul 2 22:56:21 2009
New Revision: 149199
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=149199
Log:
* tree-ssa-dce.c (bb_contains_live_stmts): New bitmap.
(mark_stmt_necessary): Set it.
(mark_operand_necessary): Set it.
(mark_control_dependent_edges_necessary): Set it.
(mark_virtual_phi_result_for_renaming): New function.
(get_live_post_dom): New function.
(forward_edge_to_pdom): New function.
(remove_dead_stmt): Fix handling of control dependences.
(tree_dce_init): Init new bitmap.
(tree_dce_done): Free it.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-dce.c