Revert of [runtime] Introduce dedicated JSBoundFunction to represent bound functions.

src/mips64/builtins-mips64.cc

Index: src/mips64/builtins-mips64.cc
diff --git a/src/mips64/builtins-mips64.cc b/src/mips64/builtins-mips64.cc
index df80e0ded77cc643c3f3b39def9b7430ae3a28f1..6ec462a7f8c95fee86c28f0a38607c2d19ecac18 100644
--- a/src/mips64/builtins-mips64.cc
+++ b/src/mips64/builtins-mips64.cc
@@ -1917,101 +1917,6 @@
 
 
 // static
-void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- a0 : the number of arguments (not including the receiver)
-  //  -- a1 : the function to call (checked to be a JSBoundFunction)
-  // -----------------------------------
-  __ AssertBoundFunction(a1);
-
-  // Patch the receiver to [[BoundThis]].
-  {
-    __ ld(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset));
-    __ dsll(a4, a0, kPointerSizeLog2);
-    __ daddu(a4, a4, sp);
-    __ sd(at, MemOperand(a4));
-  }
-
-  // Load [[BoundArguments]] into a2 and length of that into a4.
-  __ ld(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset));
-  __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
-  __ SmiUntag(a4);
-
-  // ----------- S t a t e -------------
-  //  -- a0 : the number of arguments (not including the receiver)
-  //  -- a1 : the function to call (checked to be a JSBoundFunction)
-  //  -- a2 : the [[BoundArguments]] (implemented as FixedArray)
-  //  -- a4 : the number of [[BoundArguments]]
-  // -----------------------------------
-
-  // Reserve stack space for the [[BoundArguments]].
-  {
-    Label done;
-    __ dsll(a5, a4, kPointerSizeLog2);
-    __ Dsubu(sp, sp, Operand(a5));
-    // Check the stack for overflow. We are not trying to catch interruptions
-    // (i.e. debug break and preemption) here, so check the "real stack limit".
-    __ LoadRoot(at, Heap::kRealStackLimitRootIndex);
-    __ Branch(&done, gt, sp, Operand(at));  // Signed comparison.
-    // Restore the stack pointer.
-    __ Daddu(sp, sp, Operand(a5));
-    {
-      FrameScope scope(masm, StackFrame::MANUAL);
-      __ EnterFrame(StackFrame::INTERNAL);
-      __ CallRuntime(Runtime::kThrowStackOverflow, 0);
-    }
-    __ bind(&done);
-  }
-
-  // Relocate arguments down the stack.
-  {
-    Label loop, done_loop;
-    __ mov(a5, zero_reg);
-    __ bind(&loop);
-    __ Branch(&done_loop, gt, a5, Operand(a0));
-    __ dsll(a6, a4, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
-    __ ld(at, MemOperand(a6));
-    __ dsll(a6, a5, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
-    __ sd(at, MemOperand(a6));
-    __ Daddu(a4, a4, Operand(1));
-    __ Daddu(a5, a5, Operand(1));
-    __ Branch(&loop);
-    __ bind(&done_loop);
-  }
-
-  // Copy [[BoundArguments]] to the stack (below the arguments).
-  {
-    Label loop, done_loop;
-    __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
-    __ SmiUntag(a4);
-    __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-    __ bind(&loop);
-    __ Dsubu(a4, a4, Operand(1));
-    __ Branch(&done_loop, lt, a4, Operand(zero_reg));
-    __ dsll(a5, a4, kPointerSizeLog2);
-    __ daddu(a5, a5, a2);
-    __ ld(at, MemOperand(a5));
-    __ dsll(a5, a0, kPointerSizeLog2);
-    __ daddu(a5, a5, sp);
-    __ sd(at, MemOperand(a5));
-    __ Daddu(a0, a0, Operand(1));
-    __ Branch(&loop);
-    __ bind(&done_loop);
-  }
-
-  // Call the [[BoundTargetFunction]] via the Call builtin.
-  __ ld(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ li(at, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny,
-                                      masm->isolate())));
-  __ ld(at, MemOperand(at));
-  __ Daddu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ Jump(at);
-}
-
-
-// static
 void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
   // ----------- S t a t e -------------
   //  -- a0 : the number of arguments (not including the receiver)
@@ -2024,8 +1929,6 @@
   __ GetObjectType(a1, t1, t2);
   __ Jump(masm->isolate()->builtins()->CallFunction(mode),
           RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE));
-  __ Jump(masm->isolate()->builtins()->CallBoundFunction(),
-          RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE));
   __ Branch(&non_function, ne, t2, Operand(JS_PROXY_TYPE));
 
   // 1. Runtime fallback for Proxy [[Call]].
@@ -2086,102 +1989,6 @@
 
 
 // static
-void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- a0 : the number of arguments (not including the receiver)
-  //  -- a1 : the function to call (checked to be a JSBoundFunction)
-  //  -- a3 : the new target (checked to be a constructor)
-  // -----------------------------------
-  __ AssertBoundFunction(a1);
-
-  // Load [[BoundArguments]] into a2 and length of that into a4.
-  __ ld(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset));
-  __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
-  __ SmiUntag(a4);
-
-  // ----------- S t a t e -------------
-  //  -- a0 : the number of arguments (not including the receiver)
-  //  -- a1 : the function to call (checked to be a JSBoundFunction)
-  //  -- a2 : the [[BoundArguments]] (implemented as FixedArray)
-  //  -- a3 : the new target (checked to be a constructor)
-  //  -- a4 : the number of [[BoundArguments]]
-  // -----------------------------------
-
-  // Reserve stack space for the [[BoundArguments]].
-  {
-    Label done;
-    __ dsll(a5, a4, kPointerSizeLog2);
-    __ Dsubu(sp, sp, Operand(a5));
-    // Check the stack for overflow. We are not trying to catch interruptions
-    // (i.e. debug break and preemption) here, so check the "real stack limit".
-    __ LoadRoot(at, Heap::kRealStackLimitRootIndex);
-    __ Branch(&done, gt, sp, Operand(at));  // Signed comparison.
-    // Restore the stack pointer.
-    __ Daddu(sp, sp, Operand(a5));
-    {
-      FrameScope scope(masm, StackFrame::MANUAL);
-      __ EnterFrame(StackFrame::INTERNAL);
-      __ CallRuntime(Runtime::kThrowStackOverflow, 0);
-    }
-    __ bind(&done);
-  }
-
-  // Relocate arguments down the stack.
-  {
-    Label loop, done_loop;
-    __ mov(a5, zero_reg);
-    __ bind(&loop);
-    __ Branch(&done_loop, ge, a5, Operand(a0));
-    __ dsll(a6, a4, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
-    __ ld(at, MemOperand(a6));
-    __ dsll(a6, a5, kPointerSizeLog2);
-    __ daddu(a6, a6, sp);
-    __ sd(at, MemOperand(a6));
-    __ Daddu(a4, a4, Operand(1));
-    __ Daddu(a5, a5, Operand(1));
-    __ Branch(&loop);
-    __ bind(&done_loop);
-  }
-
-  // Copy [[BoundArguments]] to the stack (below the arguments).
-  {
-    Label loop, done_loop;
-    __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset));
-    __ SmiUntag(a4);
-    __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-    __ bind(&loop);
-    __ Dsubu(a4, a4, Operand(1));
-    __ Branch(&done_loop, lt, a4, Operand(zero_reg));
-    __ dsll(a5, a4, kPointerSizeLog2);
-    __ daddu(a5, a5, a2);
-    __ ld(at, MemOperand(a5));
-    __ dsll(a5, a0, kPointerSizeLog2);
-    __ daddu(a5, a5, sp);
-    __ sd(at, MemOperand(a5));
-    __ Daddu(a0, a0, Operand(1));
-    __ Branch(&loop);
-    __ bind(&done_loop);
-  }
-
-  // Patch new.target to [[BoundTargetFunction]] if new.target equals target.
-  {
-    Label skip_load;
-    __ Branch(&skip_load, ne, a1, Operand(a3));
-    __ ld(a3, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset));
-    __ bind(&skip_load);
-  }
-
-  // Construct the [[BoundTargetFunction]] via the Construct builtin.
-  __ ld(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset));
-  __ li(at, Operand(ExternalReference(Builtins::kConstruct, masm->isolate())));
-  __ ld(at, MemOperand(at));
-  __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag));
-  __ Jump(at);
-}
-
-
-// static
 void Builtins::Generate_ConstructProxy(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- a0 : the number of arguments (not including the receiver)
@@ -2223,11 +2030,6 @@
   __ lbu(t3, FieldMemOperand(t1, Map::kBitFieldOffset));
   __ And(t3, t3, Operand(1 << Map::kIsCallable));
   __ Branch(&non_constructor, eq, t3, Operand(zero_reg));
-
-  // Only dispatch to bound functions after checking whether they are
-  // constructors.
-  __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(),
-          RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE));
 
   // Only dispatch to proxies after checking whether they are constructors.
   __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET,