re PR target/27858 (ICE in spill_failure, at reload1.c:1911while bootstrapping 4.2 on alpha)

	PR target/27858
	Revert incorrect fix for PR target/27158
	2006-05-08  Roger Sayle  <roger@eyesopen.com>
	* reload.c (find_reloads_toplev): Only return the simplified SUBREG
	of a reg_equiv_constant if the result is a legitimate constant.

From-SVN: r114559

gcc/ChangeLog

 2006-06-11  Roger Sayle  <roger@eyesopen.com>
 
+	PR target/27858
+	Revert incorrect fix for PR target/27158
+	2006-05-08  Roger Sayle  <roger@eyesopen.com>
+	* reload.c (find_reloads_toplev): Only return the simplified SUBREG
+	of a reg_equiv_constant if the result is a legitimate constant.
+
+2006-06-11  Roger Sayle  <roger@eyesopen.com>
+
 	PR target/27158
 	* config/rs6000/rs6000.c (const_vector_elt_as_int): New function to
 	extract a CONST_VECTOR element and interpret it as an integer.

gcc/reload.c

@@ -4572,8 +4572,7 @@ find_reloads_toplev (rtx x, int opnum, enum reload_type type,
 	  && reg_renumber[regno] < 0
 	  && reg_equiv_constant[regno] != 0
 	  && (tem = gen_lowpart_common (GET_MODE (x),
-					reg_equiv_constant[regno])) != 0
-	  && LEGITIMATE_CONSTANT_P (tem))
+					reg_equiv_constant[regno])) != 0)
 	return tem;
 
       if (regno >= FIRST_PSEUDO_REGISTER
@@ -4584,8 +4583,7 @@ find_reloads_toplev (rtx x, int opnum, enum reload_type type,
 	    simplify_gen_subreg (GET_MODE (x), reg_equiv_constant[regno],
 				 GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x));
 	  gcc_assert (tem);
-	  if (LEGITIMATE_CONSTANT_P (tem))
-	    return tem;
+	  return tem;
 	}
 
       /* If the subreg contains a reg that will be converted to a mem,