regclass.c (scan_one_insn): Update REG_N_REFS when optimizing handling of two-address insns.

* regclass.c (scan_one_insn): Update REG_N_REFS when optimizing handling of two-address insns. From-SVN: r41925

regclass.c (scan_one_insn): Update REG_N_REFS when optimizing handling of two-address insns.
* regclass.c (scan_one_insn): Update REG_N_REFS when optimizing handling of two-address insns. From-SVN: r41925
d3c7d45e · Alexandre Oliva · Alexandre Oliva · d08d4a19 · d3c7d45e · d3c7d45e
Commit d3c7d45e authored May 09, 2001 by Alexandre Oliva Committed by Alexandre Oliva May 09, 2001
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gcc/ChangeLog
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gcc/regclass.c
+6 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+Wed May  9 10:40:25 2001  Alexandre Oliva  <aoliva@redhat.com>
+
+	* regclass.c (scan_one_insn): Update REG_N_REFS when optimizing
+	handling of two-address insns.
+
 Wed May  9 10:36:18 2001  Alexandre Oliva  <aoliva@redhat.com>

 	* Makefile.in (NM_FOR_TARGET): Look for ./nm, then

--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -1058,11 +1058,16 @@ scan_one_insn (insn, pass)

      /* This makes one more setting of new insns's dest.  */
      REG_N_SETS (REGNO (recog_data.operand[0]))++;
+      REG_N_REFS (REGNO (recog_data.operand[0]))++;

      *recog_data.operand_loc[1] = recog_data.operand[0];
+      REG_N_REFS (REGNO (recog_data.operand[0]))++;
      for (i = recog_data.n_dups - 1; i >= 0; i--)
 	if (recog_data.dup_num[i] == 1)
-	  *recog_data.dup_loc[i] = recog_data.operand[0];
+	  {
+	    *recog_data.dup_loc[i] = recog_data.operand[0];
+	    REG_N_REFS (REGNO (recog_data.operand[0]))++;
+	  }

      return PREV_INSN (newinsn);
    }