Changeset 41160 in webkit for trunk/JavaScriptCore/jit/JITArithmetic.cpp

Timestamp:

Feb 23, 2009, 4:29:56 PM (16 years ago)

Author:

[email protected]

Message:

Bug 23787: Allow JIT to generate SSE2 code if using GCC
<​https://bugs.webkit.org/show_bug.cgi?id=23787>

Reviewed by Oliver Hunt
Contributed by Csaba Osztrogonac

GCC version of the cpuid check.

File:

• trunk/JavaScriptCore/jit/JITArithmetic.cpp (modified) (1 diff)

trunk/JavaScriptCore/jit/JITArithmetic.cpp

@@ -622 +622 @@
                 mov flags, edx;
             }
+#elif COMPILER(GCC)
+            asm (
+                "movl $0x1, %%eax;"
+                "pushl %%ebx;"
+                "cpuid;"
+                "popl %%ebx;"
+                "movl %%edx, %0;"
+                : "=g" (flags)
+                :
+                : "%eax", "%ecx", "%edx"
+            );
 #else
             flags = 0;
-            // FIXME: Add GCC code to do above asm
 #endif
             present = (flags & SSE2FeatureBit) != 0;