re PR debug/65678 (internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:909)

2015-04-07  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/65678
	* lra-remat.c (do_remat): Process input and non-input insn
	registers separately.

From-SVN: r221901

gcc/ChangeLog

+2015-04-07  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/65678
+	* lra-remat.c (do_remat): Process input and non-input insn
+	registers separately.
+
 2015-04-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/65678

gcc/lra-remat.c

@@ -1234,22 +1234,25 @@ do_remat (void)
 		for (i = 0; i < nregs; i++)
 		  CLEAR_HARD_REG_BIT (live_hard_regs, hard_regno + i);
 	      }
-	    else if (reg->type != OP_IN
-		     && find_regno_note (insn, REG_UNUSED, reg->regno) == NULL)
+	  /* Process also hard regs (e.g. CC register) which are part
+	     of insn definition.  */
+	  for (reg = static_id->hard_regs; reg != NULL; reg = reg->next)
+	    if (reg->type == OP_IN
+		&& find_regno_note (insn, REG_DEAD, reg->regno) != NULL)
+	      CLEAR_HARD_REG_BIT (live_hard_regs, reg->regno);
+	  /* Inputs have been processed, now process outputs.  */
+	  for (reg = id->regs; reg != NULL; reg = reg->next)
+	    if (reg->type != OP_IN
+		&& find_regno_note (insn, REG_UNUSED, reg->regno) == NULL)
 	      {
 		if ((hard_regno = get_hard_regs (reg, nregs)) < 0)
 		  continue;
 		for (i = 0; i < nregs; i++)
 		  SET_HARD_REG_BIT (live_hard_regs, hard_regno + i);
 	      }
-	  /* Process also hard regs (e.g. CC register) which are part
-	     of insn definition.  */
 	  for (reg = static_id->hard_regs; reg != NULL; reg = reg->next)
-	    if (reg->type == OP_IN
-		&& find_regno_note (insn, REG_DEAD, reg->regno) != NULL)
-	      CLEAR_HARD_REG_BIT (live_hard_regs, reg->regno);
-	    else if (reg->type != OP_IN
-		     && find_regno_note (insn, REG_UNUSED, reg->regno) == NULL)
+	    if (reg->type != OP_IN
+		&& find_regno_note (insn, REG_UNUSED, reg->regno) == NULL)
 	      SET_HARD_REG_BIT (live_hard_regs, reg->regno);
 	}
     }