Patch from Richard Henderson for alpha-linux ld.so bug.

	* alpha.md (movdi): Handle CONST_DOUBLE for TARGET_BUILD_CONSTANTS.

From-SVN: r15459

gcc/ChangeLog

 Mon Sep 15 15:24:00 1997  Richard Henderson  <rth@cygnus.com>
 
+	* alpha.md (movdi): Handle CONST_DOUBLE for TARGET_BUILD_CONSTANTS.
+
 	* alpha/alpha.c (output_prolog): New variable sa_reg.  Use it for
 	out-or-range reg_offset.
 	(output_epilog): Likewise.

gcc/config/alpha/alpha.md

@@ -3830,11 +3830,21 @@
       else
 	operands[1] = tem;
     }
-  else if (TARGET_BUILD_CONSTANTS
-	   && GET_CODE (operands[1]) == CONST_INT)
+  else if (CONSTANT_P (operands[1]))
+    {
+      if (TARGET_BUILD_CONSTANTS)
 	{
 #if HOST_BITS_PER_WIDE_INT == 64
-      tem = alpha_emit_set_long_const (operands[0], INTVAL (operands[1]));
+	  HOST_WIDE_INT i;
+
+	  if (GET_CODE (operands[1]) == CONST_INT)
+	    i = INTVAL (operands[1]);
+	  else if (GET_CODE (operands[1]) == CONST_DOUBLE)
+	    i = CONST_DOUBLE_LOW (operands[1]);
+	  else
+	    abort();
+	  
+          tem = alpha_emit_set_long_const (operands[0], i);
           if (rtx_equal_p (tem, operands[0]))
 	    DONE;
           else
@@ -3843,7 +3853,7 @@
           abort();
 #endif
 	}
-  else if (CONSTANT_P (operands[1]))
+      else
 	{
 	  operands[1] = force_const_mem (DImode, operands[1]);
 	  if (reload_in_progress)
@@ -3855,6 +3865,7 @@
 	  else
 	    operands[1] = validize_mem (operands[1]);
 	}
+    }
   else
     abort ();
 }")