From 75ad46a4b00af64e3f1caab3c1041168e729198f Mon Sep 17 00:00:00 2001
From: Georg Neis <neis@chromium.org>
Date: Mon, 9 Jul 2018 10:14:57 +0200
Subject: [PATCH] [turbofan] Add Disallow* scopes to type narrowing reducer.

No changes were necessary.

R=jarin@chromium.org

Bug: v8:7790
Change-Id: I8a5c308b9534ee1fb669a901b6626c338883fbf8
Reviewed-on: https://chromium-review.googlesource.com/1128741
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54315}
---
 src/compiler/type-narrowing-reducer.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/compiler/type-narrowing-reducer.cc b/src/compiler/type-narrowing-reducer.cc
index a3044fd341..e9c8ff88a7 100644
--- a/src/compiler/type-narrowing-reducer.cc
+++ b/src/compiler/type-narrowing-reducer.cc
@@ -20,6 +20,11 @@ TypeNarrowingReducer::TypeNarrowingReducer(Editor* editor, JSGraph* jsgraph,
 TypeNarrowingReducer::~TypeNarrowingReducer() {}
 
 Reduction TypeNarrowingReducer::Reduce(Node* node) {
+  DisallowHeapAllocation no_heap_allocation;
+  DisallowHandleAllocation no_handle_allocation;
+  DisallowHandleDereference no_handle_dereference;
+  DisallowCodeDependencyChange no_dependency_change;
+
   Type new_type = Type::Any();
 
   switch (node->opcode()) {