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[Bug middle-end/39976] [4.5/4.6/4.7 Regression] Big sixtrack degradation on powerpc 32/64 after revision r146817
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 08 Dec 2011 22:00:52 +0000
- Subject: [Bug middle-end/39976] [4.5/4.6/4.7 Regression] Big sixtrack degradation on powerpc 32/64 after revision r146817
- Auto-submitted: auto-generated
- References: <bug-39976-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39976
--- Comment #42 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-12-08 22:00:52 UTC ---
Author: wschmidt
Date: Thu Dec 8 22:00:38 2011
New Revision: 182140
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182140
Log:
2011-12-08 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR middle-end/39976
* tree-ssa-dom.c (enum expr_kind): Add EXPR_PHI.
(struct hashable_expr): Add struct phi field.
(initialize_hash_element): Handle phis; change to use XCNEWVEC.
(hashable_expr_equal_p): Handle phis.
(iterative_hash_hashable_expr): Likewise.
(print_expr_hash_elt): Likewise.
(free_expr_hash_elt): Likewise.
(dom_opt_enter_block): Create equivalences from redundant phis.
(eliminate_redundant_computations): Handle redundant phis.
(lookup_avail_expr): Handle phis.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-dom.c