[compiler] Sanitize entry points to LookupSlot access.

src/full-codegen/arm/full-codegen-arm.cc

Index: src/full-codegen/arm/full-codegen-arm.cc
diff --git a/src/full-codegen/arm/full-codegen-arm.cc b/src/full-codegen/arm/full-codegen-arm.cc
index 5ca37f7e678c2a11bb5326f188c58ea5d3265161..7353e3de1b45a00371c107fb7e5cef6f190b7589 100644
--- a/src/full-codegen/arm/full-codegen-arm.cc
+++ b/src/full-codegen/arm/full-codegen-arm.cc
@@ -1433,12 +1433,11 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
       // by eval-introduced variables.
       EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done);
       __ bind(&slow);
-      __ mov(r1, Operand(var->name()));
-      __ Push(cp, r1);  // Context and name.
+      __ Push(var->name());
       Runtime::FunctionId function_id =
           typeof_mode == NOT_INSIDE_TYPEOF
               ? Runtime::kLoadLookupSlot
-              : Runtime::kLoadLookupSlotNoReferenceError;
+              : Runtime::kLoadLookupSlotInsideTypeof;
       __ CallRuntime(function_id);
       __ bind(&done);
       context()->Plug(r0);
@@ -2454,11 +2453,11 @@ void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
              (var->mode() == CONST && op == Token::INIT)) {
     if (var->IsLookupSlot()) {
       // Assignment to var.
-      __ push(r0);  // Value.
-      __ mov(r1, Operand(var->name()));
-      __ mov(r0, Operand(Smi::FromInt(language_mode())));
-      __ Push(cp, r1, r0);  // Context, name, language mode.
-      __ CallRuntime(Runtime::kStoreLookupSlot);
+      __ Push(var->name());
+      __ Push(r0);
+      __ CallRuntime(is_strict(language_mode())
+                         ? Runtime::kStoreLookupSlot_Strict
+                         : Runtime::kStoreLookupSlot_Sloppy);
     } else {
       // Assignment to var or initializing assignment to let/const in harmony
       // mode.
@@ -2807,10 +2806,8 @@ void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) {
     __ bind(&slow);
     // Call the runtime to find the function to call (returned in r0)
     // and the object holding it (returned in edx).
-    DCHECK(!context_register().is(r2));
-    __ mov(r2, Operand(callee->name()));
-    __ Push(context_register(), r2);
-    __ CallRuntime(Runtime::kLoadLookupSlot);
+    __ Push(callee->name());
+    __ CallRuntime(Runtime::kLoadLookupSlotForCall);
     __ Push(r0, r1);  // Function, receiver.
     PrepareForBailoutForId(expr->LookupId(), NO_REGISTERS);
 
@@ -3932,9 +3929,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
         } else {
           // Non-global variable.  Call the runtime to try to delete from the
           // context where the variable was introduced.
-          DCHECK(!context_register().is(r2));
-          __ mov(r2, Operand(var->name()));
-          __ Push(context_register(), r2);
+          __ Push(var->name());
           __ CallRuntime(Runtime::kDeleteLookupSlot);
           context()->Plug(r0);
         }