From 1a21b526928b0c5815aa3910499ac980714fa25b Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Thu, 3 Dec 2020 13:56:36 +0000
Subject: Issue #1624 - Make ion inlining optimizations a pref.

This also adds it to JS_SetGlobalJitCompilerOption()
---
 js/src/jit/JitOptions.cpp         | 2 +-
 js/src/jsapi.cpp                  | 3 +++
 js/src/jsapi.h                    | 1 +
 js/xpconnect/src/XPCJSContext.cpp | 5 +++++
 4 files changed, 10 insertions(+), 1 deletion(-)

(limited to 'js')

diff --git a/js/src/jit/JitOptions.cpp b/js/src/jit/JitOptions.cpp
index 7521a9fae..daae3d53b 100644
--- a/js/src/jit/JitOptions.cpp
+++ b/js/src/jit/JitOptions.cpp
@@ -96,7 +96,7 @@ DefaultJitOptions::DefaultJitOptions()
     SET_DEFAULT(disableGvn, false);
 
     // Toggles whether inlining is globally disabled.
-    SET_DEFAULT(disableInlining, true);
+    SET_DEFAULT(disableInlining, false);
 
     // Toggles whether loop invariant code motion is globally disabled.
     SET_DEFAULT(disableLicm, false);
diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index dab4c25a4..e9f86bde1 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -6607,6 +6607,9 @@ JS_SetGlobalJitCompilerOption(JSContext* cx, JSJitCompilerOption opt, uint32_t v
       case JSJITCOMPILER_ION_INTERRUPT_WITHOUT_SIGNAL:
         jit::JitOptions.ionInterruptWithoutSignals = !!value;
         break;
+      case JSJITCOMPILER_ION_INLINING:
+        jit::JitOptions.disableInlining = !value;
+        break;
       default:
         break;
     }
diff --git a/js/src/jsapi.h b/js/src/jsapi.h
index f8203ee1f..1eecdbf74 100644
--- a/js/src/jsapi.h
+++ b/js/src/jsapi.h
@@ -5905,6 +5905,7 @@ JS_SetOffthreadIonCompilationEnabled(JSContext* cx, bool enabled);
     Register(ION_GVN_ENABLE, "ion.gvn.enable")                              \
     Register(ION_FORCE_IC, "ion.forceinlineCaches")                         \
     Register(ION_ENABLE, "ion.enable")                                      \
+    Register(ION_INLINING, "ion.inlining")                                  \
     Register(ION_INTERRUPT_WITHOUT_SIGNAL, "ion.interrupt-without-signals") \
     Register(ION_CHECK_RANGE_ANALYSIS, "ion.check-range-analysis")          \
     Register(BASELINE_ENABLE, "baseline.enable")                            \
diff --git a/js/xpconnect/src/XPCJSContext.cpp b/js/xpconnect/src/XPCJSContext.cpp
index 5dcc71e82..9bc69c957 100644
--- a/js/xpconnect/src/XPCJSContext.cpp
+++ b/js/xpconnect/src/XPCJSContext.cpp
@@ -1,4 +1,5 @@
 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 tw=99: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
@@ -1428,6 +1429,8 @@ ReloadPrefsCallback(const char* pref, void* data)
 
     bool unboxedObjects = Preferences::GetBool(JS_OPTIONS_DOT_STR "unboxed_objects");
     
+    bool inlining = Preferences::GetBool(JS_OPTIONS_DOT_STR "ion.inlining");
+    
     sSharedMemoryEnabled = Preferences::GetBool(JS_OPTIONS_DOT_STR "shared_memory");
 
 #ifdef DEBUG
@@ -1458,6 +1461,8 @@ ReloadPrefsCallback(const char* pref, void* data)
                                   useIonEager ? 0 : -1);
     JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_UNBOXED_OBJECTS,
                                   unboxedObjects);
+    JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_ION_INLINING,
+                                  inlining);
 }
 
 XPCJSContext::~XPCJSContext()
-- 
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