calls.c (emit_library_call_value_1): Handle partial registers correctly when…

calls.c (emit_library_call_value_1): Handle partial registers correctly when building up CALL_INSN_FUNCTION_USAGE.

	* calls.c (emit_library_call_value_1): Handle partial registers
	correctly when building up CALL_INSN_FUNCTION_USAGE.

From-SVN: r122396

gcc/ChangeLog

+2007-02-28  Bernd Schmidt  <bernd.schmidt@analog.com>
+
+	* calls.c (emit_library_call_value_1): Handle partial registers
+	correctly when building up CALL_INSN_FUNCTION_USAGE.
+	
 2007-02-27  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	* pa/predicates.md (move_src_operand): Allow zero for mode.

gcc/calls.c

@@ -3774,7 +3774,18 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
       if (reg != 0 && GET_CODE (reg) == PARALLEL)
 	use_group_regs (&call_fusage, reg);
       else if (reg != 0)
-	use_reg (&call_fusage, reg);
+        {
+	  int partial = argvec[count].partial;
+	  if (partial)
+	    {
+	      int nregs;
+              gcc_assert (partial % UNITS_PER_WORD == 0);
+	      nregs = partial / UNITS_PER_WORD;
+	      use_regs (&call_fusage, REGNO (reg), nregs);
+	    }
+	  else
+	    use_reg (&call_fusage, reg);
+	}
     }
 
   /* Pass the function the address in which to return a structure value.  */