Add trigonometric table to the snapshot.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index b5a108159ad81bac2a1ef8a7e28a287751e712c0..4a6b0dee2e08b948663f13a2b53b16d4d9985c76 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -7851,27 +7851,33 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_Math_tan) {
 RUNTIME_FUNCTION(MaybeObject*, Runtime_PopulateTrigonometricTable) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 3);
-  CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sin_table, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, cos_table, 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSArray, sin_table, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSArray, cos_table, 1);
   CONVERT_SMI_ARG_CHECKED(samples, 2);
-  RUNTIME_ASSERT(sin_table->type() == kExternalDoubleArray);
-  RUNTIME_ASSERT(cos_table->type() == kExternalDoubleArray);
-  double* sin_buffer = reinterpret_cast<double*>(
-      JSArrayBuffer::cast(sin_table->buffer())->backing_store());
-  double* cos_buffer = reinterpret_cast<double*>(
-      JSArrayBuffer::cast(cos_table->buffer())->backing_store());
+  RUNTIME_ASSERT(sin_table->HasFastDoubleElements());
+  RUNTIME_ASSERT(cos_table->HasFastDoubleElements());
+  // Run only when bootstrapping.
+  RUNTIME_ASSERT(isolate->bootstrapper()->IsActive());
+
+  Handle<FixedDoubleArray> sin_elements(
+      FixedDoubleArray::cast(sin_table->elements()));
+  Handle<FixedDoubleArray> cos_elements(
+      FixedDoubleArray::cast(cos_table->elements()));
+
+  RUNTIME_ASSERT(sin_elements->length() >= samples);
+  RUNTIME_ASSERT(cos_elements->length() >= samples);
 
   static const double pi_half = 3.1415926535897932 / 2;
   double interval = pi_half / samples;
   for (int i = 0; i < samples + 1; i++) {
     double sample = sin(i * interval);
-    sin_buffer[i] = sample;
-    cos_buffer[samples - i] = sample * interval;
+    sin_elements->set(i, sample);
+    cos_elements->set(samples - i, sample * interval);
   }
 
   // Fill this to catch out of bound accesses when calculating Math.sin(pi/2).
-  sin_buffer[samples + 1] = sin(pi_half + interval);
-  cos_buffer[samples + 1] = cos(pi_half + interval) * interval;
+  sin_elements->set(samples + 1, sin(pi_half + interval));
+  cos_elements->set(samples + 1, cos(pi_half + interval) * interval);
 
   return isolate->heap()->undefined_value();
 }