Changeset 130076 in webkit

Timestamp:

Oct 1, 2012, 2:00:51 PM (13 years ago)

Author:

commit-queue@webkit.org

Message:

Another SIGILL in JavaScriptCore on a Geode processor
​https://bugs.webkit.org/show_bug.cgi?id=96286

Patch by Daniel Drake <​dsd@laptop.org> on 2012-10-01
Reviewed by Filip Pizlo.

Disable LLint for the GTK build where the build target does not
support SSE2 instructions. Restores support for non-SSE2 processors
such as the AMD Geode.

• wtf/Platform.h:

Location:

trunk/Source/WTF

Files:

• ChangeLog (modified) (1 diff)
• wtf/Platform.h (modified) (1 diff)

trunk/Source/WTF/ChangeLog

@@ +1 @@
+2012-10-01  Daniel Drake  <dsd@laptop.org>
+
+        Another SIGILL in JavaScriptCore on a Geode processor
+        https://bugs.webkit.org/show_bug.cgi?id=96286
+
+        Reviewed by Filip Pizlo.
+
+        Disable LLint for the GTK build where the build target does not
+        support SSE2 instructions. Restores support for non-SSE2 processors
+        such as the AMD Geode.
+
+        * wtf/Platform.h:
+
 2012-10-01  Yury Semikhatsky  <yurys@chromium.org>
 

trunk/Source/WTF/wtf/Platform.h

@@ -900 +900 @@
 #endif
 
+/* On the GTK+ port we take an extra precaution for LLINT support:
+ * We disable it on x86 builds if the build target doesn't support SSE2
+ * instructions (LLINT requires SSE2 on this platform). */
+#if !defined(ENABLE_LLINT) && PLATFORM(GTK) && CPU(X86) && COMPILER(GCC) \
+    && !defined(__SSE2__)
+#define ENABLE_LLINT 0
+#endif
+
 /* On some of the platforms where we have a JIT, we want to also have the 
    low-level interpreter. */