Testcase to verify that FP regs are properly saved/restored across unwind.

PR target/20670
* g++.dg/eh/fp-regs.C: New test.

From-SVN: r98432

gcc/testsuite/ChangeLog

+2005-04-19  James E. Wilson  <wilson@specifixinc.com>
+
+	PR target/20670
+	* g++.dg/eh/fp-regs.C: New test.
+
 2005-04-20  Joseph S. Myers  <joseph@codesourcery.com>
 
 	* gcc.dg/Wint-to-pointer-cast-1.c,

gcc/testsuite/g++.dg/eh/fp-regs.C

+// PR 20670: f29 corrupted when unwind stack.  This tries to test that FP
+// registers are properly saved and restored by defining 20 different FP
+// local variables.
+// { dg-do run }
+// { dg-options "-O" }
+#include <stdlib.h>
+ 
+double zero = 0.0;
+double another_zero = 0.0;
+ 
+int
+sub (void)
+{
+  throw (0);
+}
+ 
+int
+main (void)
+{
+  double a, b, c, d, e, f, g, h, i, j;
+  double a1, b1, c1, d1, e1, f1, g1, h1, i1, j1;
+ 
+  a = zero;
+  b = a + 1;
+  c = b + 1;
+  d = c + 1;
+  e = d + 1;
+  f = e + 1;
+  g = f + 1;
+  h = g + 1;
+  i = h + 1;
+  j = i + 1;
+   
+  a1 = another_zero;
+  b1 = a1 + 1;
+  c1 = b1 + 1;
+  d1 = c1 + 1;
+  e1 = d1 + 1;
+  f1 = e1 + 1;
+  g1 = f1 + 1;
+  h1 = g1 + 1;
+  i1 = h1 + 1;
+  j1 = i1 + 1;
+   
+  try
+    {
+      sub ();
+    }
+  catch (...)
+    {
+      if (a != 0.0)
+        abort ();
+      if (b != 1.0)
+        abort ();
+      if (c != 2.0)
+        abort ();
+      if (d != 3.0)
+        abort ();
+      if (e != 4.0)
+        abort ();
+      if (f != 5.0)
+        abort ();
+      if (g != 6.0)
+        abort ();
+      if (h != 7.0)
+        abort ();
+      if (i != 8.0)
+        abort ();
+      if (j != 9.0)
+        abort ();
+ 
+      if (a1 != 0.0)
+        abort ();
+      if (b1 != 1.0)
+        abort ();
+      if (c1 != 2.0)
+        abort ();
+      if (d1 != 3.0)
+        abort ();
+      if (e1 != 4.0)
+        abort ();
+      if (f1 != 5.0)
+        abort ();
+      if (g1 != 6.0)
+        abort ();
+      if (h1 != 7.0)
+        abort ();
+      if (i1 != 8.0)
+        abort ();
+      if (j1 != 9.0)
+        abort ();
+    }
+  return 0;
+}