X87: Do not add extra argument for new.target.

src/x87/builtins-x87.cc

Index: src/x87/builtins-x87.cc
diff --git a/src/x87/builtins-x87.cc b/src/x87/builtins-x87.cc
index 311290ff2f96a7e10f266458fbb6b696b324d942..4d149bcbbdaabdc9e45a544171907ad1e2c76e4f 100644
--- a/src/x87/builtins-x87.cc
+++ b/src/x87/builtins-x87.cc
@@ -538,9 +538,6 @@ void Builtins::Generate_JSConstructStubForDerived(MacroAssembler* masm) {
     __ dec(ecx);
     __ j(greater_equal, &loop);
 
-    __ inc(eax);  // Pushed new.target.
-
-
     // Handle step in.
     Label skip_step_in;
     ExternalReference debug_step_in_fp =
@@ -564,7 +561,8 @@ void Builtins::Generate_JSConstructStubForDerived(MacroAssembler* masm) {
     // Restore context from the frame.
     __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
 
-    __ mov(ebx, Operand(esp, 0));
+    // Get arguments count, skipping over new.target.
+    __ mov(ebx, Operand(esp, kPointerSize));
   }
 
   __ pop(ecx);  // Return address.