More comment tweaks.

From-SVN: r17525

diff --git a/gcc/config/m32r/m32r.md b/gcc/config/m32r/m32r.md
index fc1b4cc9480ada0e40f7fcaef72900e423c9f84c..5e40acd3a54fa78537a71eb28100412534e190bb 100644 (file)
--- a/gcc/config/m32r/m32r.md
+++ b/gcc/config/m32r/m32r.md
@@ -379,6 +379,8 @@
        {
          /* Try to use auto-inc addressing if we can.  */
          if (GET_CODE (XEXP (operands[1], 0)) == REG
+           /* ??? This is WRONG, dead_or_set_p cannot be used after reload
+              because the REG_DEAD notes are not maintained after reload.  */
              && dead_or_set_p (insn, XEXP (operands[1], 0)))
            {
              operands[1] = XEXP (operands[1], 0);
@@ -389,6 +391,8 @@
     case 3 :
       /* Try to use auto-inc addressing if we can.  */
       if (GET_CODE (XEXP (operands[0], 0)) == REG
+         /* ??? This is WRONG, dead_or_set_p cannot be used after reload
+            because the REG_DEAD notes are not maintained after reload.  */
          && dead_or_set_p (insn, XEXP (operands[0], 0)))
        {
          operands[0] = XEXP (operands[0], 0);
@@ -530,6 +534,8 @@
        {
          /* Try to use auto-inc addressing if we can.  */
          if (GET_CODE (XEXP (operands[1], 0)) == REG
+             /* ??? This is WRONG, dead_or_set_p cannot be used after reload
+                because the REG_DEAD notes are not maintained after reload.  */
              && dead_or_set_p (insn, XEXP (operands[1], 0)))
            {
              operands[1] = XEXP (operands[1], 0);
@@ -540,6 +546,8 @@
     case 3 :
       /* Try to use auto-inc addressing if we can.  */
       if (GET_CODE (XEXP (operands[0], 0)) == REG
+         /* ??? This is WRONG, dead_or_set_p cannot be used after reload
+            because the REG_DEAD notes are not maintained after reload.  */
          && dead_or_set_p (insn, XEXP (operands[0], 0)))
        {
          operands[0] = XEXP (operands[0], 0);