X87: [stubs] Simplify the non-function case of CallConstructStub.

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index 76682e3c8548e2bb1257338abbee51e28cde55e0..69d2104d34f701d41bbc2567e05c333b65d50f0b 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -3086,6 +3086,8 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   CallConstructStub stub(isolate(), RECORD_CONSTRUCTOR_TARGET);
   __ call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
   PrepareForBailoutForId(expr->ReturnId(), TOS_REG);
+  // Restore context register.
+  __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
   context()->Plug(eax);
 }
 
@@ -3135,6 +3137,8 @@ void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) {
 
   RecordJSReturnSite(expr);
 
+  // Restore context register.
+  __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
   context()->Plug(eax);
 }
 
@@ -3958,9 +3962,10 @@ void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
   CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL);
   __ call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
 
-  __ Drop(1);
+  // Restore context register.
+  __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
 
-  context()->Plug(eax);
+  context()->DropAndPlug(1, eax);
 }