target-supports.exp (check_effective_target_fixed_point): New to check if targets have fixed-point supports.

	* lib/target-supports.exp (check_effective_target_fixed_point): New to
	check if targets have fixed-point supports.
	* gcc.dg/fixed-point/fixed-point.exp: New file.
	* gcc.dg/fixed-point/addsub.c, gcc.dg/fixed-point/allconv.c,
	* gcc.dg/fixed-point/allop.c, gcc.dg/fixed-point/call-by-value.c,
	* gcc.dg/fixed-point/cast-bad.c, gcc.dg/fixed-point/composite-type.c,
	* gcc.dg/fixed-point/const-1.c, gcc.dg/fixed-point/constant.c,
	* gcc.dg/fixed-point/constants-pedantic.c,
	* gcc.dg/fixed-point/convert.c, gcc.dg/fixed-point/define.c,
	* gcc.dg/fixed-point/keywords-c89.c, gcc.dg/fixed-point/keywords-c99.c,
	* gcc.dg/fixed-point/keywords-ignored-c99.c,
	* gcc.dg/fixed-point/keywords-pedantic.c,
	* gcc.dg/fixed-point/keywords-reserved.c, gcc.dg/fixed-point/binary.c,
	* gcc.dg/fixed-point/modes.c, gcc.dg/fixed-point/noassoc.c,
	* gcc.dg/fixed-point/types.c, gcc.dg/fixed-point/typespec.c,
	* gcc.dg/fixed-point/unary.c, gcc.dg/fixed-point/func-array.c,
	* gcc.dg/fixed-point/func-scalar.c, gcc.dg/fixed-point/func-struct.c,
	* gcc.dg/fixed-point/func-vararg-mixed.c,
	* gcc.dg/fixed-point/operator-logical.c,
	* gcc.dg/fixed-point/struct-union.c,
	* gcc.dg/fixed-point/bit-complement.c,
	* gcc.dg/fixed-point/operator-bitwise.c,
	* gcc.dg/fixed-point/operator-comma.c,
	* gcc.dg/fixed-point/struct-layout-1.c,
	* gcc.dg/fixed-point/union-init.c,
	* gcc.dg/fixed-point/Wbad-function-cast-1.c,
	* gcc.dg/fixed-point/func-mixed.c,
	* gcc.dg/fixed-point/func-vararg-size0.c,
	* gcc.dg/fixed-point/func-vararg.c, gcc.dg/fixed-point/int-warning.c,
	* gcc.dg/fixed-point/loop-index.c, gcc.dg/fixed-point/operator-cond.c,
	* gcc.dg/fixed-point/operator-unary.c,
	* gcc.dg/fixed-point/allop-const.c,
	* gcc.dg/fixed-point/muldiv-warning.c,
	* gcc.dg/nofixed-point-1.c,
	* gcc.target/mips/dpaq_sa_l_w.c, gcc.target/mips/dpsq_sa_l_w.c,
	* gcc.target/mips/fixed-vector-type.c,
	* gcc.target/mips/fixed-scalar-type.c: New tests.

From-SVN: r128661

1 files changed, 62 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/fixed-point/union-init.c b/gcc/testsuite/gcc.dg/fixed-point/union-init.c
new file mode 100644
index 0000000..126cc9e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fixed-point/union-init.c
@@ -0,0 +1,62 @@
+/* { dg-do run } */
+/* { dg-options "-std=gnu99" } */
+
+/* Cast to union is a GNU C extension.
+   Based on the test from ../dfp/.  */
+
+extern void abort (void);
+
+union u
+{
+  long _Fract lf;
+  double d;
+};
+
+union n
+{
+  double d;
+  _Fract f;
+};
+
+int main ()
+{
+  static union u u1 = { 0.1lr };
+  static union u u2 = { 0.2lr };
+  static union u u4 = { 0.0 };
+
+  static union n n1 = { 0.3r };
+  static union n n2 = { 3.25 };
+
+  long _Fract lf;
+  _Fract f;
+  double d;
+
+  if (u1.lf != 0.1lr)
+    abort ();
+
+  if (u2.lf != 0.2lr)
+    abort ();
+
+  /* cast fixed-point to union type.  */
+  lf = 0.4lr;
+  f = 0.5r;
+  d = 3.25;
+
+  u4 = (union u) lf;
+  if (u4.lf != 0.4lr)
+    abort ();
+
+  u4 = (union u) d;
+  if (u4.d != 3.25)
+    abort ();
+
+  n1 = (union n) f;
+  if (n1.f != 0.5r)
+    abort ();
+
+  n1 = (union n)d;
+  if (n1.d != 3.25)
+    abort ();
+
+  return 0;
+}