[es6] re-implement rest parameters via desugaring

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 005fb97513d0277325c9ff516612aeb922f1949c..67a76b5c4c6e6e4664131d22a048f5448b3f985c 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -1939,31 +1939,6 @@ void ArgumentsAccessStub::GenerateNewStrict(MacroAssembler* masm) {
 }
 
 
-void RestParamAccessStub::GenerateNew(MacroAssembler* masm) {
-  // Stack layout on entry.
-  //  sp[0] : language mode
-  //  sp[4] : index of rest parameter
-  //  sp[8] : number of parameters
-  //  sp[12] : receiver displacement
-
-  Label runtime;
-  __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
-  __ ldr(r3, MemOperand(r2, StandardFrameConstants::kContextOffset));
-  __ cmp(r3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
-  __ b(ne, &runtime);
-
-  // Patch the arguments.length and the parameters pointer.
-  __ ldr(r1, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset));
-  __ str(r1, MemOperand(sp, 2 * kPointerSize));
-  __ add(r3, r2, Operand::PointerOffsetFromSmiKey(r1));
-  __ add(r3, r3, Operand(StandardFrameConstants::kCallerSPOffset));
-  __ str(r3, MemOperand(sp, 3 * kPointerSize));
-
-  __ bind(&runtime);
-  __ TailCallRuntime(Runtime::kNewRestParam, 4, 1);
-}
-
-
 void RegExpExecStub::Generate(MacroAssembler* masm) {
   // Just jump directly to runtime if native RegExp is not selected at compile
   // time or if regexp entry in generated code is turned off runtime switch or