[Bug testsuite/26344] [4.2 Regression] three testsuite failures in gcc.dg/tree-ssa/

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-02-17 18:24 -------
Maybe even between 111172 and 111175.
Which means the following change cause this:
 2006-02-16  Jeff Law  <law@redhat.com>

+       * tree-vrp.c (set_value_range_to_nonnegative): New function.
+       (vrp_expr_computes_nonnegative, ssa_name_nonnegative_p): Likewise.
+       (ssa_name_nonzero_p): Likewise.
+       (get_value_range): Return NULL if VRP is not running.
+       (extract_range_from_expr): Fallback to tree_expr_XXX_p if
+       VRP routines do not discover a range.
+       (vrp_finalize): Clear VR_VALUE to indicate VRP is not running.
+       * tree.h (ssa_name_nonzero_p, ssa_name_nonnegative_p): Prototype.
+       * fold-const.c (tree_expr_nonzero_p): For SSA_NAMEs, query VRP.
+       (tree_expr_nonnegative_p): Similarly.
+       * tree-ssa-dom.c (nonzero_vars, nonzero_vars_stack): Remove.
+       (restore_nonzero_vars_to_original_value): Remove.
+       (unsafe_associative_fp_binop): Remove.
+       (tree_ssa_dominator_optimize): Remove initialization and
+       finalization of nonzero_vars and nonzero_vars_stack.
+       (dom_opt_initialize_block): No longer push marker on
+       nonzero_vars_stack.
+       (dom_opt_finalize_block): No longer call
+       restore_nonzero_vars_to_original_value.
+       (record_equivalences_from_phis): No longer look for
+       nonzero PHI arguments.
+       (cprop_into_successor_phis): No longer propagate nonzero
+       property into PHI arguments.  Lose unused argument.  Caller
+       updated.
+       (record_equivalences_from_stmt): No longer record nonzero
+       values for SSA_NAMEs.
+       (lookup_avail_expr): No longer use nonzero_vars.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26344