Revert of [runtime] Fix ES6 9.2.1 [[Call]] when encountering a classConstructor.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 68951ba3f74c285a9b2924bb1563d51787b43a9d..3cf1145a1931b4e3cb4136000a86cfe0c68dd1fd 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -2503,10 +2503,7 @@
 
 
 static void EmitContinueIfStrictOrNative(MacroAssembler* masm, Label* cont) {
-  // ----------- S t a t e -------------
-  // -- a1 : the function to call
-  // -- a3 : the function's shared function info
-  // -----------------------------------
+  __ lw(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ lw(t0, FieldMemOperand(a3, SharedFunctionInfo::kCompilerHintsOffset));
 
   // Do not transform the receiver for strict mode functions.
@@ -2539,23 +2536,6 @@
 }
 
 
-static void EmitClassConstructorCallCheck(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  // -- a1 : the function to call
-  // -- a3 : the function's shared function info
-  // -----------------------------------
-  // ClassConstructor Check: ES6 section 9.2.1 [[Call]]
-  Label non_class_constructor;
-  // Check whether the current function is a classConstructor.
-  __ lbu(t0, FieldMemOperand(a3, SharedFunctionInfo::kFunctionKindByteOffset));
-  __ And(at, t0, Operand(SharedFunctionInfo::kClassConstructorBitsWithinByte));
-  __ Branch(&non_class_constructor, eq, at, Operand(zero_reg));
-  // Step: 2, If we call a classConstructor Function throw a TypeError.
-  __ Jump(masm->isolate()->builtins()->CallFunction(), RelocInfo::CODE_TARGET);
-  __ bind(&non_class_constructor);
-}
-
-
 static void CallFunctionNoFeedback(MacroAssembler* masm,
                                    int argc, bool needs_checks,
                                    bool call_as_method) {
@@ -2571,9 +2551,6 @@
     __ GetObjectType(a1, t0, t0);
     __ Branch(&slow, ne, t0, Operand(JS_FUNCTION_TYPE));
   }
-
-  __ lw(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
-  EmitClassConstructorCallCheck(masm);
 
   // Fast-case: Invoke the function now.
   // a1: pushed function
@@ -2742,10 +2719,6 @@
   __ sw(a3, FieldMemOperand(at, FixedArray::kHeaderSize + kPointerSize));
 
   __ bind(&have_js_function);
-
-  __ lw(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
-  EmitClassConstructorCallCheck(masm);
-
   if (CallAsMethod()) {
     EmitContinueIfStrictOrNative(masm, &cont);
     // Compute the receiver in sloppy mode.