[Bug middle-end/34852] [4.3 Regression] Revision 131576 miscompiled 178.galgel

[hjl dot tools at gmail dot com]

------- Comment #7 from hjl dot tools at gmail dot com  2008-01-20 16:43 -------
Oops. This one

--- regmove.c.freq      2008-01-17 07:31:56.000000000 -0800
+++ regmove.c   2008-01-20 08:42:42.000000000 -0800
@@ -1695,7 +1695,7 @@ fixup_match_1 (rtx insn, rtx set, rtx sr
   rtx p;
   rtx post_inc = 0, post_inc_set = 0, search_end = 0;
   int success = 0;
-  int num_calls = 0, s_num_calls = 0;
+  int num_calls = 0, freq_calls = 0, s_num_calls = 0, s_freq_calls = 0;
   enum rtx_code code = NOTE;
   HOST_WIDE_INT insn_const = 0, newconst = 0;
   rtx overlap = 0; /* need to move insn ? */
@@ -1887,10 +1887,13 @@ fixup_match_1 (rtx insn, rtx set, rtx sr
            break;

          num_calls++;
+         freq_calls += REG_FREQ_FROM_BB  (BLOCK_FOR_INSN (p));

          if (src_note)
-           s_num_calls++;
-
+           {
+             s_num_calls++;
+             s_freq_calls += REG_FREQ_FROM_BB  (BLOCK_FOR_INSN (p));
+           }
        }
     }

@@ -1939,7 +1942,7 @@ fixup_match_1 (rtx insn, rtx set, rtx sr
     {
       rtx note = find_reg_note (insn, REG_EQUAL, NULL_RTX);
       rtx q, set2 = NULL_RTX;
-      int num_calls2 = 0, s_length2 = 0;
+      int num_calls2 = 0, s_length2 = 0, freq_calls2 = 0;

       if (note && CONSTANT_P (XEXP (note, 0)))
        {
@@ -1968,7 +1971,10 @@ fixup_match_1 (rtx insn, rtx set, rtx sr
                  break;
                }
              if (CALL_P (p))
-               num_calls2++;
+               {
+                 num_calls2++;
+                 freq_calls2 += REG_FREQ_FROM_BB  (BLOCK_FOR_INSN (p));
+               }
            }
          if (q && set2 && SET_DEST (set2) == src && CONSTANT_P (SET_SRC
(set2))
              && validate_change (insn, &SET_SRC (set), XEXP (note, 0), 0))
@@ -1976,6 +1982,7 @@ fixup_match_1 (rtx insn, rtx set, rtx sr
              delete_insn (q);
              INC_REG_N_SETS (REGNO (src), -1);
              REG_N_CALLS_CROSSED (REGNO (src)) -= num_calls2;
+             REG_FREQ_CALLS_CROSSED (REGNO (src)) -= freq_calls2;
              REG_LIVE_LENGTH (REGNO (src)) -= s_length2;
              insn_const = 0;
            }
@@ -2044,12 +2051,14 @@ fixup_match_1 (rtx insn, rtx set, rtx sr
       REG_NOTES (p) = src_note;

       REG_N_CALLS_CROSSED (REGNO (src)) += s_num_calls;
+      REG_FREQ_CALLS_CROSSED (REGNO (src)) += s_freq_calls;
     }

   INC_REG_N_SETS (REGNO (src), 1);
   INC_REG_N_SETS (REGNO (dst), -1);

   REG_N_CALLS_CROSSED (REGNO (dst)) -= num_calls;
+  REG_FREQ_CALLS_CROSSED (REGNO (dst)) -= freq_calls;

   REG_LIVE_LENGTH (REGNO (src)) += s_length;
   if (REG_LIVE_LENGTH (REGNO (dst)) >= 0)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34852