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

src/x87/code-stubs-x87.cc

Index: src/x87/code-stubs-x87.cc
diff --git a/src/x87/code-stubs-x87.cc b/src/x87/code-stubs-x87.cc
index cab0000f2c9540835e736547331b46ced29c1d17..05c76928f6322e5abcab8e07191924571aebf8ba 100644
--- a/src/x87/code-stubs-x87.cc
+++ b/src/x87/code-stubs-x87.cc
@@ -414,7 +414,6 @@ void LoadIndexedStringStub::Generate(MacroAssembler* masm) {
 
 
 void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) {
-  CHECK(!has_new_target());
   // The key is in edx and the parameter count is in eax.
   DCHECK(edx.is(ArgumentsAccessReadDescriptor::index()));
   DCHECK(eax.is(ArgumentsAccessReadDescriptor::parameter_count()));
@@ -481,8 +480,6 @@ void ArgumentsAccessStub::GenerateNewSloppySlow(MacroAssembler* masm) {
   // esp[8] : receiver displacement
   // esp[12] : function
 
-  CHECK(!has_new_target());
-
   // Check if the calling frame is an arguments adaptor frame.
   Label runtime;
   __ mov(edx, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
@@ -511,8 +508,6 @@ void ArgumentsAccessStub::GenerateNewSloppyFast(MacroAssembler* masm) {
   // ebx = parameter count (tagged)
   __ mov(ebx, Operand(esp, 1 * kPointerSize));
 
-  CHECK(!has_new_target());
-
   // Check if the calling frame is an arguments adaptor frame.
   // TODO(rossberg): Factor out some of the bits that are shared with the other
   // Generate* functions.
@@ -753,18 +748,6 @@ void ArgumentsAccessStub::GenerateNewStrict(MacroAssembler* masm) {
   __ bind(&adaptor_frame);
   __ mov(ecx, Operand(edx, ArgumentsAdaptorFrameConstants::kLengthOffset));
 
-  if (has_new_target()) {
-    // If the constructor was [[Call]]ed, the call will not push a new.target
-    // onto the stack. In that case the arguments array we construct is bogus,
-    // bu we do not care as the constructor throws immediately.
-    __ cmp(ecx, Immediate(Smi::FromInt(0)));
-    Label skip_decrement;
-    __ j(equal, &skip_decrement);
-    // Subtract 1 from smi-tagged arguments count.
-    __ sub(ecx, Immediate(2));
-    __ bind(&skip_decrement);
-  }
-
   __ lea(edx, Operand(edx, ecx, times_2,
                       StandardFrameConstants::kCallerSPOffset));
   __ mov(Operand(esp, 1 * kPointerSize), ecx);