Changeset 36581 in webkit for trunk/JavaScriptCore/VM/CTI.cpp

Timestamp:

Sep 17, 2008, 5:36:37 PM (17 years ago)

Author:

[email protected]

Message:

2008-09-17 Gavin Barraclough <​[email protected]>

Reviewed by Oliver Hunt.

JIT generation cti_op_construct_verify.

Quarter to half percent progression on v8-tests.
Roughly not change on SunSpider (possible minor progression).

• VM/CTI.cpp: (JSC::CTI::privateCompileMainPass):
• VM/Machine.cpp:
• VM/Machine.h:

File:

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

trunk/JavaScriptCore/VM/CTI.cpp

@@ -899 +899 @@
         }
         case op_construct_verify: {
-            emitPutArgConstant(instruction[i + 1].u.operand, 0);
-            emitPutArgConstant(instruction[i + 2].u.operand, 4);
-            emitCall(i, Machine::cti_op_construct_verify);
+            emitGetArg(instruction[i + 1].u.operand, X86::eax);
+            
+            m_jit.testl_i32r(JSImmediate::TagMask, X86::eax);
+            X86Assembler::JmpSrc isImmediate = m_jit.emitUnlinkedJne();
+            m_jit.movl_mr(OBJECT_OFFSET(JSCell, m_structureID), X86::eax, X86::ecx);
+            m_jit.cmpl_i32m(ObjectType, OBJECT_OFFSET(StructureID, m_type), X86::ecx);
+            X86Assembler::JmpSrc isObject = m_jit.emitUnlinkedJe();
+
+            m_jit.link(isImmediate, m_jit.label());
+            emitGetArg(instruction[i + 2].u.operand, X86::ecx);
+            emitPutResult(instruction[i + 1].u.operand, X86::ecx);
+            m_jit.link(isObject, m_jit.label());
+
             i += 3;
             break;