spu.c (array_to_constant): Fix (latent) wrong-code generation due to implicit sign extension.

	* config/spu/spu.c (array_to_constant): Fix (latent) wrong-code
	generation due to implicit sign extension.

From-SVN: r144034

gcc/ChangeLog

+2009-02-09  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* config/spu/spu.c (array_to_constant): Fix (latent) wrong-code
+	generation due to implicit sign extension.
+
 2009-02-09  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR middle-end/38981

gcc/config/spu/spu.c

@@ -4722,9 +4722,8 @@ array_to_constant (enum machine_mode mode, unsigned char arr[16])
     }
   if (mode == DFmode)
     {
-      val = (arr[0] << 24) | (arr[1] << 16) | (arr[2] << 8) | arr[3];
-      val <<= 32;
-      val |= (arr[4] << 24) | (arr[5] << 16) | (arr[6] << 8) | arr[7];
+      for (i = 0, val = 0; i < 8; i++)
+	val = (val << 8) | arr[i];
       return hwint_to_const_double (DFmode, val);
     }