Upgrade V8 to 3.1.8.14

deps/v8/src/arm/code-stubs-arm.cc

@@ -3425,6 +3425,8 @@ void TypeRecordingBinaryOpStub::GenerateInt32Stub(MacroAssembler* masm) {
         // Save the left value on the stack.
         __ Push(r5, r4);
 
+        Label pop_and_call_runtime;
+
         // Allocate a heap number to store the result.
         heap_number_result = r5;
         GenerateHeapResultAllocation(masm,
@@ -3432,7 +3434,7 @@ void TypeRecordingBinaryOpStub::GenerateInt32Stub(MacroAssembler* masm) {
                                      heap_number_map,
                                      scratch1,
                                      scratch2,
-                                     &call_runtime);
+                                     &pop_and_call_runtime);
 
         // Load the left value from the value saved on the stack.
         __ Pop(r1, r0);
@@ -3440,6 +3442,10 @@ void TypeRecordingBinaryOpStub::GenerateInt32Stub(MacroAssembler* masm) {
         // Call the C function to handle the double operation.
         FloatingPointHelper::CallCCodeForDoubleOperation(
             masm, op_, heap_number_result, scratch1);
+
+        __ bind(&pop_and_call_runtime);
+        __ Drop(2);
+        __ b(&call_runtime);
       }
 
       break;

deps/v8/src/builtins.cc

@@ -818,8 +818,8 @@ BUILTIN(ArraySplice) {
       const int delta = actual_delete_count - item_count;
 
       if (actual_start > 0) {
-        Object** start = elms->data_start();
-        memmove(start + delta, start, actual_start * kPointerSize);
+        AssertNoAllocation no_gc;
+        MoveElements(&no_gc, elms, delta, elms, 0, actual_start);
       }
 
       elms = LeftTrimFixedArray(elms, delta);

deps/v8/src/runtime.cc

@@ -2625,7 +2625,7 @@ MUST_USE_RESULT static MaybeObject* StringReplaceRegExpWithEmptyString(
     end = RegExpImpl::GetCapture(match_info_array, 1);
   }
 
-  int length = subject->length();
+  int length = subject_handle->length();
   int new_length = length - (end - start);
   if (new_length == 0) {
     return Heap::empty_string();

deps/v8/src/version.cc

@@ -35,7 +35,7 @@
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     1
 #define BUILD_NUMBER      8
-#define PATCH_LEVEL       10
+#define PATCH_LEVEL       14
 #define CANDIDATE_VERSION false
 
 // Define SONAME to have the SCons build the put a specific SONAME into the