[compiler] Sanitize entry points to LookupSlot access.

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index 30fa37ebce846da3d631ff6941349efc44d705d5..380ddf6ac6b035d29672292930ef93d804e8a343 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -2250,14 +2250,11 @@ void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
              (var->mode() == CONST && op == Token::INIT)) {
     if (var->IsLookupSlot()) {
       // Assignment to var.
-      __ Mov(x11, Operand(var->name()));
-      __ Mov(x10, Smi::FromInt(language_mode()));
-      // jssp[0]  : mode.
-      // jssp[8]  : name.
-      // jssp[16] : context.
-      // jssp[24] : value.
-      __ Push(x0, cp, x11, x10);
-      __ CallRuntime(Runtime::kStoreLookupSlot);
+      __ Push(Operand(var->name()));
+      __ Push(x0);
+      __ CallRuntime(is_strict(language_mode())
+                         ? Runtime::kStoreLookupSlot_Strict
+                         : Runtime::kStoreLookupSlot_Sloppy);
     } else {
       // Assignment to var or initializing assignment to let/const in harmony
       // mode.
@@ -2615,9 +2612,8 @@ void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) {
     __ Bind(&slow);
     // Call the runtime to find the function to call (returned in x0)
     // and the object holding it (returned in x1).
-    __ Mov(x10, Operand(callee->name()));
-    __ Push(context_register(), x10);
-    __ CallRuntime(Runtime::kLoadLookupSlot);
+    __ Push(callee->name());
+    __ CallRuntime(Runtime::kLoadLookupSlotForCall);
     __ Push(x0, x1);  // Receiver, function.
     PrepareForBailoutForId(expr->LookupId(), NO_REGISTERS);