Changeset 37570 in webkit for trunk/JavaScriptCore/VM/Machine.h

Timestamp:

Oct 13, 2008, 5:20:49 PM (17 years ago)

Author:

[email protected]

Message:

2008-10-13 Cameron Zwarich <​[email protected]>

Reviewed by Geoff Garen.

Bug 21541: Move RegisterFile growth check to callee
<​https://bugs.webkit.org/show_bug.cgi?id=21541>

Move the RegisterFile growth check to the callee in the common case,
where some of the information is known statically at JIT time. There is
still a check in the caller in the case where the caller provides too
few arguments.

This is a 2.1% speedup on the V8 benchmark, including a 5.1% speedup on
the Richards benchmark, a 4.1% speedup on the DeltaBlue benchmark, and a
1.4% speedup on the Earley-Boyer benchmark. It is also a 0.5% speedup on
SunSpider.

• VM/CTI.cpp: (JSC::CTI::privateCompile):
• VM/Machine.cpp: (JSC::Machine::cti_register_file_check): (JSC::Machine::cti_op_call_JSFunction): (JSC::Machine::cti_op_construct_JSConstruct):
• VM/Machine.h:
• VM/RegisterFile.h:
• masm/X86Assembler.h: (JSC::X86Assembler::): (JSC::X86Assembler::cmpl_mr): (JSC::X86Assembler::emitUnlinkedJg):

File:

• trunk/JavaScriptCore/VM/Machine.h (modified) (1 diff)

trunk/JavaScriptCore/VM/Machine.h

@@ -163 +163 @@
 
         static void SFX_CALL cti_timeout_check(CTI_ARGS);
+        static void SFX_CALL cti_register_file_check(CTI_ARGS);
 
         static JSValue* SFX_CALL cti_op_convert_this(CTI_ARGS);