rs6000.c (num_insns_constant_wide): Constants are sign-extended.

        * rs6000.c (num_insns_constant_wide): Constants are sign-extended.
        (num_insns_constant): CONST_INT can be 64-bits.

From-SVN: r42099

gcc/ChangeLog

+2001-05-14  David Edelsohn  <edelsohn@gnu.org>
+
+	* rs6000.c (num_insns_constant_wide): Constants are sign-extended.
+	(num_insns_constant): CONST_INT can be 64-bits.
+
 2001-05-14  Stan Shebs  <shebs@apple.com>
 
 	* config/darwin.h (LIB_SPEC): Just use -lSystem.

gcc/config/rs6000/rs6000.c

@@ -754,9 +754,11 @@ num_insns_constant_wide (value)
 #if HOST_BITS_PER_WIDE_INT == 64
   else if (TARGET_POWERPC64)
     {
-      unsigned HOST_WIDE_INT low  = value & 0xffffffff;
+      HOST_WIDE_INT low  = value & 0xffffffff;
       HOST_WIDE_INT high = value >> 32;
 
+      low = (low ^ 0x80000000) - 0x80000000;  /* sign extend */
+
       if (high == 0 && (low & 0x80000000) == 0)
 	return 2;
 
@@ -782,7 +784,14 @@ num_insns_constant (op, mode)
      enum machine_mode mode;
 {
   if (GET_CODE (op) == CONST_INT)
+    {
+#if HOST_BITS_PER_WIDE_INT == 64
+      if (mask64_operand (op, mode))
+	    return 2;
+      else
+#endif
 	return num_insns_constant_wide (INTVAL (op));
+    }
 
   else if (GET_CODE (op) == CONST_DOUBLE && mode == SFmode)
     {