}
}
-/* Returns the name associated to OLD_NAME in MAP. */
+/* Returns the expression associated to OLD_NAME in MAP. */
static tree
get_rename (htab_t map, tree old_name)
return old_name;
}
-/* Register in MAP the rename tuple (old_name, expr). */
+/* Register in MAP the rename tuple (OLD_NAME, EXPR). */
void
set_rename (htab_t map, tree old_name, tree expr)
*slot = new_rename_map_elt (old_name, expr);
}
+static void rename_variables_in_expr (htab_t, tree);
+
+/* Renames the operand OP of expression T following the tuples
+ (OLD_NAME, EXPR) in RENAME_MAP. */
+
+static void
+rename_variables_in_operand (htab_t rename_map, tree t, int op)
+{
+ tree operand = TREE_OPERAND (t, op);
+
+ if (TREE_CODE (operand) == SSA_NAME)
+ {
+ tree new_name = get_rename (rename_map, operand);
+
+ if (new_name != operand)
+ TREE_OPERAND (t, op) = new_name;
+ }
+ else
+ rename_variables_in_expr (rename_map, operand);
+}
+
+/* Renames the expression T following the tuples (OLD_NAME, EXPR) in
+ RENAME_MAP. */
+
+static void
+rename_variables_in_expr (htab_t rename_map, tree t)
+{
+ if (!t)
+ return;
+
+ switch (TREE_CODE_LENGTH (TREE_CODE (t)))
+ {
+ case 3:
+ rename_variables_in_operand (rename_map, t, 2);
+
+ case 2:
+ rename_variables_in_operand (rename_map, t, 1);
+
+ case 1:
+ rename_variables_in_operand (rename_map, t, 0);
+
+ default:
+ return;
+ }
+}
+
+/* Renames all the loop->nb_iterations expressions following the
+ tuples (OLD_NAME, EXPR) in RENAME_MAP. */
+
+void
+rename_nb_iterations (htab_t rename_map)
+{
+ loop_iterator li;
+ struct loop *loop;
+
+ FOR_EACH_LOOP (li, loop, 0)
+ {
+ rename_variables_in_expr (rename_map, loop->nb_iterations);
+ }
+}
+
/* Adjusts the phi nodes in the block BB for variables defined in
SCOP_REGION and used outside the SCOP_REGION. The code generation
moves SCOP_REGION in the else clause of an "if (1)" and generates
unsigned i;
unsigned false_i = 0;
gimple phi = gsi_stmt (si);
+ tree res = gimple_phi_result (phi);
- if (!is_gimple_reg (PHI_RESULT (phi)))
+ if (!is_gimple_reg (res))
{
sese_adjust_vphi (region, phi, true_e);
continue;
}
SET_PHI_ARG_DEF (phi, i, expr);
+ set_rename (rename_map, old_name, res);
}
}
}