Changeset 174473 in webkit for trunk/Source/JavaScriptCore

Timestamp:

Oct 8, 2014, 1:16:46 PM (11 years ago)

Author:

[email protected]

Message:

[WinCairo] Enable JIT on 32-bit.
​https://bugs.webkit.org/show_bug.cgi?id=137521

Patch by ​[email protected] <​[email protected]> on 2014-10-08
Reviewed by Mark Lam.

Enable JIT on Windows 32-bit, but disable it at runtime if SSE2 is not present.

Source/JavaScriptCore:

• JavaScriptCore.vcxproj/LLInt/LLIntAssembly/build-LLIntAssembly.pl:
• runtime/Options.cpp:

(JSC::recomputeDependentOptions):

Source/WTF:

• wtf/Platform.h:

Location:

trunk/Source/JavaScriptCore

Files:

• ChangeLog (modified) (1 diff)
• JavaScriptCore.vcxproj/LLInt/LLIntAssembly/build-LLIntAssembly.pl (modified) (1 diff)
• runtime/Options.cpp (modified) (2 diffs)

trunk/Source/JavaScriptCore/ChangeLog

@@ +1 @@
+2014-10-08  [email protected]  <[email protected]>
+
+        [WinCairo] Enable JIT on 32-bit.
+        https://bugs.webkit.org/show_bug.cgi?id=137521
+
+        Reviewed by Mark Lam.
+
+        Enable JIT on Windows 32-bit, but disable it at runtime if SSE2 is not present.
+
+        * JavaScriptCore.vcxproj/LLInt/LLIntAssembly/build-LLIntAssembly.pl:
+        * runtime/Options.cpp:
+        (JSC::recomputeDependentOptions):
+
 2014-10-08  Brent Fulgham  <[email protected]>
 

trunk/Source/JavaScriptCore/JavaScriptCore.vcxproj/LLInt/LLIntAssembly/build-LLIntAssembly.pl

@@ -63 +63 @@
 
 # If you want to enable the LLINT C loop, set OUTPUTFILENAME to "LLIntAssembly.h"
-# We only want the C loop for 32-bit Windows so we can continue to support old CPUs.
-my $OUTPUTFILENAME;
-if ("$ARGV[3]" eq "32") {
-    $OUTPUTFILENAME = File::Spec->catfile($DERIVED_SOURCES_DIR, 'LLIntAssembly.h');
-} else {
-    $OUTPUTFILENAME = File::Spec->catfile($DERIVED_SOURCES_DIR, 'LowLevelInterpreterWin.asm');
-}
+my $OUTPUTFILENAME = File::Spec->catfile($DERIVED_SOURCES_DIR, 'LowLevelInterpreterWin.asm');
 
 my $offlineAsm = File::Spec->catfile($XSRCROOT, 'offlineasm', 'asm.rb');

trunk/Source/JavaScriptCore/runtime/Options.cpp

@@ -42 +42 @@
 #endif
 
+#if OS(WINDOWS)
+#include "MacroAssemblerX86.h"
+#endif
+
 namespace JSC {
 
@@ -228 +232 @@
     Options::useFTLJIT() = false;
 #endif
-
+#if OS(WINDOWS) && CPU(X86) 
+    // Disable JIT on Windows if SSE2 is not present 
+    if (!MacroAssemblerX86::supportsFloatingPoint())
+        Options::useJIT() = false;
+#endif
     if (Options::showDisassembly()
         || Options::showDFGDisassembly()