[runtime] Kill %Arguments and %ArgumentsLength.

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index c741439527d50395b9d98230ee068b43834dce51..88e130f29277c086b59a417232d737bcb45f27a1 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -1587,61 +1587,6 @@ void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
 }
 
 
-void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) {
-  // The displacement is the offset of the last parameter (if any)
-  // relative to the frame pointer.
-  const int kDisplacement =
-      StandardFrameConstants::kCallerSPOffset - kPointerSize;
-  DCHECK(a1.is(ArgumentsAccessReadDescriptor::index()));
-  DCHECK(a0.is(ArgumentsAccessReadDescriptor::parameter_count()));
-
-  // Check that the key is a smiGenerateReadElement.
-  Label slow;
-  __ JumpIfNotSmi(a1, &slow);
-
-  // Check if the calling frame is an arguments adaptor frame.
-  Label adaptor;
-  __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-  __ ld(a3, MemOperand(a2, StandardFrameConstants::kContextOffset));
-  __ Branch(&adaptor,
-            eq,
-            a3,
-            Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
-
-  // Check index (a1) against formal parameters count limit passed in
-  // through register a0. Use unsigned comparison to get negative
-  // check for free.
-  __ Branch(&slow, hs, a1, Operand(a0));
-
-  // Read the argument from the stack and return it.
-  __ dsubu(a3, a0, a1);
-  __ SmiScale(a7, a3, kPointerSizeLog2);
-  __ Daddu(a3, fp, Operand(a7));
-  __ Ret(USE_DELAY_SLOT);
-  __ ld(v0, MemOperand(a3, kDisplacement));
-
-  // Arguments adaptor case: Check index (a1) against actual arguments
-  // limit found in the arguments adaptor frame. Use unsigned
-  // comparison to get negative check for free.
-  __ bind(&adaptor);
-  __ ld(a0, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ Branch(&slow, Ugreater_equal, a1, Operand(a0));
-
-  // Read the argument from the adaptor frame and return it.
-  __ dsubu(a3, a0, a1);
-  __ SmiScale(a7, a3, kPointerSizeLog2);
-  __ Daddu(a3, a2, Operand(a7));
-  __ Ret(USE_DELAY_SLOT);
-  __ ld(v0, MemOperand(a3, kDisplacement));
-
-  // Slow-case: Handle non-smi or out-of-bounds access to arguments
-  // by calling the runtime system.
-  __ bind(&slow);
-  __ push(a1);
-  __ TailCallRuntime(Runtime::kArguments);
-}
-
-
 void ArgumentsAccessStub::GenerateNewSloppySlow(MacroAssembler* masm) {
   // a1 : function
   // a2 : number of parameters (tagged)