* gcc-interface/trans.c (can_equal_min_or_max_val_p): Be prepared for

[pf3gnuchains/gcc-fork.git] / gcc / dce.c

diff --git a/gcc/dce.c b/gcc/dce.c
index 93464fe..a36ac61 100644 (file)
--- a/gcc/dce.c
+++ b/gcc/dce.c
@@ -275,11 +275,11 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
     if (GET_CODE (XEXP (p, 0)) == USE
        && MEM_P (XEXP (XEXP (p, 0), 0)))
       {
-       rtx mem = XEXP (XEXP (p, 0), 0), addr, size;
-       HOST_WIDE_INT off = 0;
-       size = MEM_SIZE (mem);
-       if (size == NULL_RTX)
+       rtx mem = XEXP (XEXP (p, 0), 0), addr;
+       HOST_WIDE_INT off = 0, size;
+       if (!MEM_SIZE_KNOWN_P (mem))
          return false;
+       size = MEM_SIZE (mem);
        addr = XEXP (mem, 0);
        if (GET_CODE (addr) == PLUS
            && REG_P (XEXP (addr, 0))
@@ -329,7 +329,7 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
              return false;
          }
        min_sp_off = MIN (min_sp_off, off);
-       max_sp_off = MAX (max_sp_off, off + INTVAL (size));
+       max_sp_off = MAX (max_sp_off, off + size);
       }
 
   if (min_sp_off >= max_sp_off)
@@ -370,7 +370,7 @@ find_call_stack_args (rtx call_insn, bool do_mark, bool fast,
            set = single_set (DF_REF_INSN (defs->ref));
            off += INTVAL (XEXP (SET_SRC (set), 1));
          }
-       for (byte = off; byte < off + INTVAL (MEM_SIZE (mem)); byte++)
+       for (byte = off; byte < off + MEM_SIZE (mem); byte++)
          {
            if (!bitmap_set_bit (sp_bytes, byte - min_sp_off))
              gcc_unreachable ();
@@ -514,11 +514,11 @@ reset_unmarked_insns_debug_uses (void)
              struct df_link *defs;
              for (defs = DF_REF_CHAIN (use); defs; defs = defs->next)
                {
-                 rtx insn;
+                 rtx ref_insn;
                  if (DF_REF_IS_ARTIFICIAL (defs->ref))
                    continue;
-                 insn = DF_REF_INSN (defs->ref);
-                 if (!marked_insn_p (insn))
+                 ref_insn = DF_REF_INSN (defs->ref);
+                 if (!marked_insn_p (ref_insn))
                    break;
                }
              if (!defs)
@@ -527,6 +527,7 @@ reset_unmarked_insns_debug_uses (void)
                 each of the DEFs?  */
              INSN_VAR_LOCATION_LOC (insn) = gen_rtx_UNKNOWN_VAR_LOC ();
              df_insn_rescan_debug_internal (insn);
+             break;
            }
        }
 }
@@ -785,7 +786,6 @@ struct rtl_opt_pass pass_ud_rtl_dce =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func |
   TODO_df_finish | TODO_verify_rtl_sharing |
   TODO_ggc_collect                     /* todo_flags_finish */
  }
@@ -1137,7 +1137,6 @@ struct rtl_opt_pass pass_fast_rtl_dce =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func |
   TODO_df_finish | TODO_verify_rtl_sharing |
   TODO_ggc_collect                      /* todo_flags_finish */
  }