Changeset 234784 in webkit

Timestamp:

Aug 11, 2018 2:04:12 PM (6 years ago)

Author:

commit-queue@webkit.org

Message:

Disable JIT on IA-32 without SSE2
​https://bugs.webkit.org/show_bug.cgi?id=188476

Patch by Karo Gyoker <​karogyoker2+webkit@gmail.com> on 2018-08-11
Reviewed by Yusuke Suzuki.

On IA-32 CPUs without SSE2 most of the webpages cannot load
if the JIT is turned on.

• runtime/Options.cpp:

(JSC::recomputeDependentOptions):

Location:

trunk/Source/JavaScriptCore

Files:

• ChangeLog (modified) (1 diff)
• runtime/Options.cpp (modified) (1 diff)

trunk/Source/JavaScriptCore/ChangeLog

@@ +1 @@
+2018-08-11  Karo Gyoker  <karogyoker2+webkit@gmail.com>
+
+        Disable JIT on IA-32 without SSE2
+        https://bugs.webkit.org/show_bug.cgi?id=188476
+
+        Reviewed by Yusuke Suzuki.
+
+        On IA-32 CPUs without SSE2 most of the webpages cannot load
+        if the JIT is turned on.
+
+        * runtime/Options.cpp:
+        (JSC::recomputeDependentOptions):
+
 2018-08-10  Joseph Pecoraro  <pecoraro@apple.com>
 

trunk/Source/JavaScriptCore/runtime/Options.cpp

@@ -398 +398 @@
 #endif
     
-#if OS(WINDOWS) && ENABLE(JIT) && CPU(X86) 
-    // Disable JIT on Windows if SSE2 is not present 
+#if ENABLE(JIT) && CPU(X86)
+    // Disable JIT on IA-32 if SSE2 is not present
     if (!MacroAssemblerX86::supportsFloatingPoint())
         Options::useJIT() = false;