New tests.

From-SVN: r56924

gcc/testsuite/gcc.c-torture/execute/ieee/inf-1.c

+extern void abort (void);
+
+int main()
+{
+  float fi = __builtin_inff();
+  double di = __builtin_inf();
+  long double li = __builtin_infl();
+
+  float fh = __builtin_huge_valf();
+  double dh = __builtin_huge_val();
+  long double lh = __builtin_huge_vall();
+
+  if (fi + fi != fi)
+    abort ();
+  if (di + di != di)
+    abort ();
+  if (li + li != li)
+    abort ();
+
+  if (fi != fh)
+    abort ();
+  if (di != dh)
+    abort ();
+  if (li != lh)
+    abort ();
+
+  if (fi <= 0)
+    abort ();
+  if (di <= 0)
+    abort ();
+  if (li <= 0)
+    abort ();
+
+  return 0;
+}

gcc/testsuite/gcc.dg/builtin-inf-1.c

+/* { dg-do compile } */
+
+float fi = __builtin_inff();
+double di = __builtin_inf();
+long double li = __builtin_infl();
+
+float fh = __builtin_huge_valf();
+double dh = __builtin_huge_val();
+long double lh = __builtin_huge_vall();
+
+/* { dg-warning "does not support infinity" "INF unsupported" { target vax-*-* i370-*-* c4x-*-* } 3 } */
+/* { dg-warning "does not support infinity" "INF unsupported" { target vax-*-* i370-*-* c4x-*-* } 4 } */
+/* { dg-warning "does not support infinity" "INF unsupported" { target vax-*-* i370-*-* c4x-*-* } 5 } */