| Index: src/arm64/code-stubs-arm64.cc
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| diff --git a/src/arm64/code-stubs-arm64.cc b/src/arm64/code-stubs-arm64.cc
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| index 732f8fa5b16247c5c0905dd5f7ab33c679401ad1..f12fed13dbe04c02222dac05de7f37fcff2b3319 100644
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| --- a/src/arm64/code-stubs-arm64.cc
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| +++ b/src/arm64/code-stubs-arm64.cc
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| @@ -2206,19 +2206,21 @@ void ArgumentsAccessStub::GenerateNewStrict(MacroAssembler* masm) {
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|  
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|  void RestParamAccessStub::GenerateNew(MacroAssembler* masm) {
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|    // Stack layout on entry.
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| -  //  jssp[0]:  index of rest parameter (tagged)
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| -  //  jssp[8]:  number of parameters (tagged)
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| -  //  jssp[16]: address of receiver argument
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| +  //  jssp[0]:  language mode (tagged)
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| +  //  jssp[8]:  index of rest parameter (tagged)
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| +  //  jssp[16]: number of parameters (tagged)
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| +  //  jssp[24]: address of receiver argument
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|    //
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|    // Returns pointer to result object in x0.
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|  
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|    // Get the stub arguments from the frame, and make an untagged copy of the
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|    // parameter count.
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| -  Register rest_index_smi = x1;
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| -  Register param_count_smi = x2;
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| -  Register params = x3;
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| +  Register language_mode_smi = x1;
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| +  Register rest_index_smi = x2;
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| +  Register param_count_smi = x3;
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| +  Register params = x4;
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|    Register param_count = x13;
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| -  __ Pop(rest_index_smi, param_count_smi, params);
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| +  __ Pop(language_mode_smi, rest_index_smi, param_count_smi, params);
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|    __ SmiUntag(param_count, param_count_smi);
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|  
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|    // Test if arguments adaptor needed.
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| @@ -2231,11 +2233,12 @@ void RestParamAccessStub::GenerateNew(MacroAssembler* masm) {
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|    __ Cmp(caller_ctx, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
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|    __ B(ne, &runtime);
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|  
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| -  //   x1   rest_index_smi    index of rest parameter
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| -  //   x2   param_count_smi   number of parameters passed to function (smi)
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| -  //   x3   params            pointer to parameters
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| -  //   x11  caller_fp         caller's frame pointer
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| -  //   x13  param_count       number of parameters passed to function
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| +  //   x1   language_mode_smi  language mode
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| +  //   x2   rest_index_smi     index of rest parameter
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| +  //   x3   param_count_smi    number of parameters passed to function (smi)
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| +  //   x4   params             pointer to parameters
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| +  //   x11  caller_fp          caller's frame pointer
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| +  //   x13  param_count        number of parameters passed to function
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|  
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|    // Patch the argument length and parameters pointer.
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|    __ Ldr(param_count_smi,
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| @@ -2246,8 +2249,8 @@ void RestParamAccessStub::GenerateNew(MacroAssembler* masm) {
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|    __ Add(params, x10, StandardFrameConstants::kCallerSPOffset);
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|  
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|    __ Bind(&runtime);
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| -  __ Push(params, param_count_smi, rest_index_smi);
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| -  __ TailCallRuntime(Runtime::kNewRestParam, 3, 1);
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| +  __ Push(params, param_count_smi, rest_index_smi, language_mode_smi);
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| +  __ TailCallRuntime(Runtime::kNewRestParam, 4, 1);
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|  }
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|  
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|  
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| 
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