Restore saved caller FP registers on stub failure

test/mjsunit/regress/regress-clobbered-fp-regs.js

Index: test/mjsunit/regress/regress-clobbered-fp-regs.js
diff --git a/test/mjsunit/regress/regress-1387.js b/test/mjsunit/regress/regress-clobbered-fp-regs.js
similarity index 73%
copy from test/mjsunit/regress/regress-1387.js
copy to test/mjsunit/regress/regress-clobbered-fp-regs.js
index d171d381ad27f2ac101105dbe0419211adf10b46..7795ae9a304f5cee33c55d1225903d4c18495ba6 100644
--- a/test/mjsunit/regress/regress-1387.js
+++ b/test/mjsunit/regress/regress-clobbered-fp-regs.js
@@ -24,15 +24,31 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Flags: --allow-natives-syntax
 
-// Tests that we always return the same type error function when trying to
-// access strict mode caller and callee.
-
-function foo() {
-  'use strict';
-  return arguments;
+function store(a, x, y) {
+  var f1 = 0.1 * y;
+  var f2 = 0.2 * y;
+  var f3 = 0.3 * y;
+  var f4 = 0.4 * y;
+  var f5 = 0.5 * y;
+  var f6 = 0.6 * y;
+  var f7 = 0.7 * y;
+  var f8 = 0.8 * y;
+  a[0] = x;
+  var sum = (f1 + f2 + f3 + f4 + f5 + f6 + f7 + f8);
+  assertEquals(1, y);
+  var expected = 3.6;
+  if (Math.abs(expected - sum) > 0.01) {
+    assertEquals(expected, sum);
+  }
 }
 
-var get1 = Object.getOwnPropertyDescriptor(foo(), "caller").get;
-var get2 = Object.getOwnPropertyDescriptor(foo(), "callee").get;
-assertEquals(get1, get2);
+// Generate TransitionElementsKindStub.
+store([1], 1, 1);
+store([1], 1.1, 1);
+store([1], 1.1, 1);
+%OptimizeFunctionOnNextCall(store);
+// This will trap on allocation site in TransitionElementsKindStub.
+store([1], 1, 1)