Reland (and fix) "Add hydrogen support for ArrayPop, and remove the handwritten call stubs."

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index e5cb2001c580ff905899f79b79b3a90e885a1cdd..23ef6ece97ea53c6463a48e40c07286fb37b250e 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -1556,78 +1556,6 @@ Handle<Code> CallStubCompiler::CompileCallField(Handle<JSObject> object,
 }
 
 
-Handle<Code> CallStubCompiler::CompileArrayPopCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  // If object is not an array or is observed or sealed, bail out to regular
-  // call.
-  if (!object->IsJSArray() ||
-      !cell.is_null() ||
-      Handle<JSArray>::cast(object)->map()->is_observed() ||
-      !Handle<JSArray>::cast(object)->map()->is_extensible()) {
-    return Handle<Code>::null();
-  }
-
-  Label miss, return_undefined, call_builtin;
-  Register receiver = a0;
-  Register scratch = a1;
-  Register elements = a3;
-  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
-
-  // Get the elements array of the object.
-  __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset));
-
-  // Check that the elements are in fast mode and writable.
-  __ CheckMap(elements,
-              scratch,
-              Heap::kFixedArrayMapRootIndex,
-              &call_builtin,
-              DONT_DO_SMI_CHECK);
-
-  // Get the array's length into t0 and calculate new length.
-  __ lw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset));
-  __ Subu(t0, t0, Operand(Smi::FromInt(1)));
-  __ Branch(&return_undefined, lt, t0, Operand(zero_reg));
-
-  // Get the last element.
-  __ LoadRoot(t2, Heap::kTheHoleValueRootIndex);
-  STATIC_ASSERT(kSmiTagSize == 1);
-  STATIC_ASSERT(kSmiTag == 0);
-  // We can't address the last element in one operation. Compute the more
-  // expensive shift first, and use an offset later on.
-  __ sll(t1, t0, kPointerSizeLog2 - kSmiTagSize);
-  __ Addu(elements, elements, t1);
-  __ lw(scratch, FieldMemOperand(elements, FixedArray::kHeaderSize));
-  __ Branch(&call_builtin, eq, scratch, Operand(t2));
-
-  // Set the array's length.
-  __ sw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset));
-
-  // Fill with the hole.
-  __ sw(t2, FieldMemOperand(elements, FixedArray::kHeaderSize));
-  const int argc = arguments().immediate();
-  __ mov(v0, scratch);
-  __ DropAndRet(argc + 1);
-
-  __ bind(&return_undefined);
-  __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
-  __ DropAndRet(argc + 1);
-
-  __ bind(&call_builtin);
-  __ TailCallExternalReference(
-      ExternalReference(Builtins::c_ArrayPop, isolate()), argc + 1, 1);
-
-  HandlerFrontendFooter(&miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
 Handle<Code> CallStubCompiler::CompileFastApiCall(
     const CallOptimization& optimization,
     Handle<Object> object,