Changeset 37500 in webkit for trunk/JavaScriptCore/VM/CTI.cpp

Timestamp:

Oct 10, 2008, 10:49:39 PM (17 years ago)

Author:

[email protected]

Message:

Use fastcall calling convention on GCC > 4.0

Reviewed by Cameron Zwarich

Results in a 2-3% improvement in GCC 4.2 performance, so
that it is no longer a regression vs. GCC 4.0

File:

• trunk/JavaScriptCore/VM/CTI.cpp (modified) (1 diff)

trunk/JavaScriptCore/VM/CTI.cpp

@@ -110 +110 @@
 SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
 #if USE(CTI_ARGUMENT)
+#if USE(FAST_CALL_CTI_ARGUMENT)
+    "movl %esp, %ecx" "\n"
+#else
+    "movl %esp, 0(%esp)" "\n"
+#endif
     "call " SYMBOL_STRING(_ZN3JSC7Machine12cti_vm_throwEPPv) "\n"
 #else