predicates.md (easy_fp_constant): Reject TFmode constants for E500 double.

	* config/rs6000/predicates.md (easy_fp_constant): Reject TFmode
	constants for E500 double.

testsuite:
	* gcc.c-torture/compile/20080628-1.c: New test.

From-SVN: r137232

gcc/ChangeLog

+2008-06-28  Joseph Myers  <joseph@codesourcery.com>
+
+	* config/rs6000/predicates.md (easy_fp_constant): Reject TFmode
+	constants for E500 double.
+
 2008-06-28  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
 
 	* doc/rtl.texi (const_vector): Document const_fixed as legitimate

gcc/config/rs6000/predicates.md

@@ -213,6 +213,9 @@
   switch (mode)
     {
     case TFmode:
+      if (TARGET_E500_DOUBLE)
+	return 0;
+
       REAL_VALUE_FROM_CONST_DOUBLE (rv, op);
       REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, k);
 

gcc/testsuite/ChangeLog

+2008-06-28  Joseph Myers  <joseph@codesourcery.com>
+
+	* gcc.c-torture/compile/20080628-1.c: New test.
+
 2008-06-28  Richard Guenther  <rguenther@suse.de>
 
 	* gcc.c-torture/execute/pta-field-1.c: Add return 0.

gcc/testsuite/gcc.c-torture/compile/20080628-1.c

+void f (long double, long double);
+
+struct s {
+  char c;
+  struct s *p;
+} *p;
+
+void
+g (void)
+{
+  long double ld;
+  p->p->c = 1;
+  ld = p->p->c;
+  f (ld, 1.0L);
+}