[ia32,root] Preserve kRootRegister in Call_Receiver variants

This CL ensures the kRootRegister (ebx) is preserved in

Call_ReceiverIsNullOrUndefined
Call_ReceiverIsNotNullOrUndefined
Call_ReceiverIsAny

Bug: v8:6666
Change-Id: Ifef8ba544110c45810a8f895869acdd5b61d1d5d
Reviewed-on: https://chromium-review.googlesource.com/1233597Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56071}

src/builtins/builtins-call-gen.cc

@@ -43,15 +43,24 @@ void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) {
 }
 
 void Builtins::Generate_Call_ReceiverIsNullOrUndefined(MacroAssembler* masm) {
+#ifdef V8_TARGET_ARCH_IA32
+  Assembler::SupportsRootRegisterScope supports_root_register(masm);
+#endif
   Generate_Call(masm, ConvertReceiverMode::kNullOrUndefined);
 }
 
 void Builtins::Generate_Call_ReceiverIsNotNullOrUndefined(
     MacroAssembler* masm) {
+#ifdef V8_TARGET_ARCH_IA32
+  Assembler::SupportsRootRegisterScope supports_root_register(masm);
+#endif
   Generate_Call(masm, ConvertReceiverMode::kNotNullOrUndefined);
 }
 
 void Builtins::Generate_Call_ReceiverIsAny(MacroAssembler* masm) {
+#ifdef V8_TARGET_ARCH_IA32
+  Assembler::SupportsRootRegisterScope supports_root_register(masm);
+#endif
   Generate_Call(masm, ConvertReceiverMode::kAny);
 }
 

src/builtins/ia32/builtins-ia32.cc

@@ -2091,6 +2091,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
 
 // static
 void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
+  Assembler::SupportsRootRegisterScope supports_root_register(masm);
   // ----------- S t a t e -------------
   //  -- eax : the number of arguments (not including the receiver)
   //  -- edi : the target to call (can be any Object).