[runtime] Kill %Arguments and %ArgumentsLength.

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 04e42e6609621a19c123ba9b807e9f1e4bebab06..0c3a7d6fde22f63bd254e4e7ea6577f97b84b002 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -1591,59 +1591,6 @@ 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;
-  __ lw(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-  __ lw(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.
-  __ subu(a3, a0, a1);
-  __ Lsa(a3, fp, a3, kPointerSizeLog2 - kSmiTagSize);
-  __ Ret(USE_DELAY_SLOT);
-  __ lw(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);
-  __ lw(a0, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ Branch(&slow, Ugreater_equal, a1, Operand(a0));
-
-  // Read the argument from the adaptor frame and return it.
-  __ subu(a3, a0, a1);
-  __ Lsa(a3, a2, a3, kPointerSizeLog2 - kSmiTagSize);
-  __ Ret(USE_DELAY_SLOT);
-  __ lw(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)