* config/sh/lib1funcs-Os-4-200.asm: Guard entire file with

[pf3gnuchains/gcc-fork.git] / gcc / tree-ssa-math-opts.c

diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c
index 609c408..1ff0628 100644 (file)
--- a/gcc/tree-ssa-math-opts.c
+++ b/gcc/tree-ssa-math-opts.c
@@ -304,8 +304,8 @@ insert_reciprocals (block_stmt_iterator *def_bsi, struct occurrence *occ,
       type = TREE_TYPE (def);
       recip_def = make_rename_temp (type, "reciptmp");
       new_stmt = build2 (MODIFY_EXPR, void_type_node, recip_def,
-                        fold_build2 (RDIV_EXPR, type,
-                                     build_real (type, dconst1), def));
+                        fold_build2 (RDIV_EXPR, type, build_one_cst (type),
+                                     def));
   
   
       if (occ->bb_has_division)
@@ -417,17 +417,20 @@ execute_cse_reciprocals_1 (block_stmt_iterator *def_bsi, tree def)
   threshold = targetm.min_divisions_for_recip_mul (TYPE_MODE (TREE_TYPE (def)));
   if (count >= threshold)
     {
+      tree use_stmt;
       for (occ = occ_head; occ; occ = occ->next)
        {
          compute_merit (occ);
          insert_reciprocals (def_bsi, occ, def, NULL, threshold);
        }
 
-      FOR_EACH_IMM_USE_SAFE (use_p, use_iter, def)
+      FOR_EACH_IMM_USE_STMT (use_stmt, use_iter, def)
        {
-         tree use_stmt = USE_STMT (use_p);
          if (is_division_by (use_stmt, def))
-           replace_reciprocal (use_p);
+           {
+             FOR_EACH_IMM_USE_ON_STMT (use_p, use_iter)
+               replace_reciprocal (use_p);
+           }
        }
     }
 
@@ -457,7 +460,8 @@ execute_cse_reciprocals (void)
                                sizeof (struct occurrence),
                                n_basic_blocks / 3 + 1);
 
-  calculate_dominance_info (CDI_DOMINATORS | CDI_POST_DOMINATORS);
+  calculate_dominance_info (CDI_DOMINATORS);
+  calculate_dominance_info (CDI_POST_DOMINATORS);
 
 #ifdef ENABLE_CHECKING
   FOR_EACH_BB (bb)
@@ -494,7 +498,8 @@ execute_cse_reciprocals (void)
        }
     }
 
-  free_dominance_info (CDI_DOMINATORS | CDI_POST_DOMINATORS);
+  free_dominance_info (CDI_DOMINATORS);
+  free_dominance_info (CDI_POST_DOMINATORS);
   free_alloc_pool (occ_pool);
   return 0;
 }