[webkit-changes] [226260] trunk/Source/JavaScriptCore

Fri, 22 Dec 2017 00:20:51 -0800

Title: [226260] trunk/Source/_javascript_Core
Revision
226260
Author
utatane....@gmail.com
Date
2017-12-22 00:19:55 -0800 (Fri, 22 Dec 2017)

Log Message

[DFG] Add JSValueRegsFlushedCallResult
https://bugs.webkit.org/show_bug.cgi?id=181075

Reviewed by Mark Lam.

Add JSValueRegsFlushedCallResult, which is appropriate for the JSValueRegs result
of the function call after flushing. We can remove bunch of `#if USE(JSVALUE32_64)`
code and simplify them.

* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileFromCharCode):
(JSC::DFG::SpeculativeJIT::compileGetByValForObjectWithString):
(JSC::DFG::SpeculativeJIT::compileGetByValForObjectWithSymbol):
(JSC::DFG::SpeculativeJIT::compileParseInt):
(JSC::DFG::SpeculativeJIT::emitUntypedBitOp):
(JSC::DFG::SpeculativeJIT::emitUntypedRightShiftBitOp):
(JSC::DFG::SpeculativeJIT::compileValueAdd):
(JSC::DFG::SpeculativeJIT::compileArithMul):
(JSC::DFG::SpeculativeJIT::compileArithDiv):
(JSC::DFG::SpeculativeJIT::compileArithRounding):
(JSC::DFG::SpeculativeJIT::compileResolveScopeForHoistingFuncDeclInEval):
(JSC::DFG::SpeculativeJIT::compileGetDynamicVar):
* dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::callOperation):
(JSC::DFG::JSValueRegsFlushedCallResult::JSValueRegsFlushedCallResult):
(JSC::DFG::JSValueRegsFlushedCallResult::regs):

Modified Paths

Diff

Modified: trunk/Source/_javascript_Core/ChangeLog (226259 => 226260)


--- trunk/Source/_javascript_Core/ChangeLog	2017-12-22 06:25:24 UTC (rev 226259)
+++ trunk/Source/_javascript_Core/ChangeLog	2017-12-22 08:19:55 UTC (rev 226260)
@@ -1,3 +1,32 @@
+2017-12-22  Yusuke Suzuki  <utatane....@gmail.com>
+
+        [DFG] Add JSValueRegsFlushedCallResult
+        https://bugs.webkit.org/show_bug.cgi?id=181075
+
+        Reviewed by Mark Lam.
+
+        Add JSValueRegsFlushedCallResult, which is appropriate for the JSValueRegs result
+        of the function call after flushing. We can remove bunch of `#if USE(JSVALUE32_64)`
+        code and simplify them.
+
+        * dfg/DFGSpeculativeJIT.cpp:
+        (JSC::DFG::SpeculativeJIT::compileFromCharCode):
+        (JSC::DFG::SpeculativeJIT::compileGetByValForObjectWithString):
+        (JSC::DFG::SpeculativeJIT::compileGetByValForObjectWithSymbol):
+        (JSC::DFG::SpeculativeJIT::compileParseInt):
+        (JSC::DFG::SpeculativeJIT::emitUntypedBitOp):
+        (JSC::DFG::SpeculativeJIT::emitUntypedRightShiftBitOp):
+        (JSC::DFG::SpeculativeJIT::compileValueAdd):
+        (JSC::DFG::SpeculativeJIT::compileArithMul):
+        (JSC::DFG::SpeculativeJIT::compileArithDiv):
+        (JSC::DFG::SpeculativeJIT::compileArithRounding):
+        (JSC::DFG::SpeculativeJIT::compileResolveScopeForHoistingFuncDeclInEval):
+        (JSC::DFG::SpeculativeJIT::compileGetDynamicVar):
+        * dfg/DFGSpeculativeJIT.h:
+        (JSC::DFG::SpeculativeJIT::callOperation):
+        (JSC::DFG::JSValueRegsFlushedCallResult::JSValueRegsFlushedCallResult):
+        (JSC::DFG::JSValueRegsFlushedCallResult::regs):
+
 2017-12-21  Saam Barati  <sbar...@apple.com>
 
         lowering get_by_val to GetById inside bytecode parser should check for BadType exit kind

Modified: trunk/Source/_javascript_Core/dfg/DFGSpeculativeJIT.cpp (226259 => 226260)


--- trunk/Source/_javascript_Core/dfg/DFGSpeculativeJIT.cpp	2017-12-22 06:25:24 UTC (rev 226259)
+++ trunk/Source/_javascript_Core/dfg/DFGSpeculativeJIT.cpp	2017-12-22 08:19:55 UTC (rev 226260)
@@ -2255,15 +2255,10 @@
     if (child.useKind() == UntypedUse) {
         JSValueOperand opr(this, child);
         JSValueRegs oprRegs = opr.jsValueRegs();
-#if USE(JSVALUE64)
-        GPRTemporary result(this);
-        JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-        GPRTemporary resultTag(this);
-        GPRTemporary resultPayload(this);
-        JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
         flushRegisters();
+        JSValueRegsFlushedCallResult result(this);
+        JSValueRegs resultRegs = result.regs();
         callOperation(operationStringFromCharCodeUntyped, resultRegs, oprRegs);
         m_jit.exceptionCheck();
         
@@ -3227,18 +3222,10 @@
     speculateObject(node->child1(), arg1GPR);
     speculateString(node->child2(), arg2GPR);
 
-    GPRFlushedCallResult resultPayload(this);
-    GPRReg resultPayloadGPR = resultPayload.gpr();
-#if USE(JSVALUE64)
-    JSValueRegs resultRegs(resultPayloadGPR);
-#else
-    GPRFlushedCallResult2 resultTag(this);
-    GPRReg resultTagGPR = resultTag.gpr();
-    JSValueRegs resultRegs(resultTagGPR, resultPayloadGPR);
-#endif
-
     flushRegisters();
-    callOperation(operationGetByValObjectString, extractResult(resultRegs), arg1GPR, arg2GPR);
+    JSValueRegsFlushedCallResult result(this);
+    JSValueRegs resultRegs = result.regs();
+    callOperation(operationGetByValObjectString, resultRegs, arg1GPR, arg2GPR);
     m_jit.exceptionCheck();
 
     jsValueResult(resultRegs, node);
@@ -3255,18 +3242,10 @@
     speculateObject(node->child1(), arg1GPR);
     speculateSymbol(node->child2(), arg2GPR);
 
-    GPRFlushedCallResult resultPayload(this);
-    GPRReg resultPayloadGPR = resultPayload.gpr();
-#if USE(JSVALUE64)
-    JSValueRegs resultRegs(resultPayloadGPR);
-#else
-    GPRFlushedCallResult2 resultTag(this);
-    GPRReg resultTagGPR = resultTag.gpr();
-    JSValueRegs resultRegs(resultTagGPR, resultPayloadGPR);
-#endif
-
     flushRegisters();
-    callOperation(operationGetByValObjectSymbol, extractResult(resultRegs), arg1GPR, arg2GPR);
+    JSValueRegsFlushedCallResult result(this);
+    JSValueRegs resultRegs = result.regs();
+    callOperation(operationGetByValObjectSymbol, resultRegs, arg1GPR, arg2GPR);
     m_jit.exceptionCheck();
 
     jsValueResult(resultRegs, node);
@@ -3388,72 +3367,57 @@
 void SpeculativeJIT::compileParseInt(Node* node)
 {
     RELEASE_ASSERT(node->child1().useKind() == UntypedUse || node->child1().useKind() == StringUse);
-
-    GPRFlushedCallResult resultPayload(this);
-    GPRReg resultPayloadGPR = resultPayload.gpr();
-#if USE(JSVALUE64)
-    JSValueRegs resultRegs(resultPayloadGPR);
-#else
-    GPRFlushedCallResult2 resultTag(this);
-    GPRReg resultTagGPR = resultTag.gpr();
-    JSValueRegs resultRegs(resultTagGPR, resultPayloadGPR);
-#endif
-
     if (node->child2()) {
         SpeculateInt32Operand radix(this, node->child2());
         GPRReg radixGPR = radix.gpr();
         if (node->child1().useKind() == UntypedUse) {
             JSValueOperand value(this, node->child1());
-#if USE(JSVALUE64)
-            auto result = resultRegs.gpr();
-            auto valueReg = value.gpr();
-#else
-            auto result = resultRegs;
-            auto valueReg = value.jsValueRegs();
-#endif
+            JSValueRegs valueRegs = value.jsValueRegs();
 
             flushRegisters();
-            callOperation(operationParseIntGeneric, result, valueReg, radixGPR);
+            JSValueRegsFlushedCallResult result(this);
+            JSValueRegs resultRegs = result.regs();
+            callOperation(operationParseIntGeneric, resultRegs, valueRegs, radixGPR);
             m_jit.exceptionCheck();
-        } else {
-            SpeculateCellOperand value(this, node->child1());
-            GPRReg valueGPR = value.gpr();
-            speculateString(node->child1(), valueGPR);
+            jsValueResult(resultRegs, node);
+            return;
+        }
 
-#if USE(JSVALUE64)
-            auto result = resultRegs.gpr();
-#else
-            auto result = resultRegs;
-#endif
+        SpeculateCellOperand value(this, node->child1());
+        GPRReg valueGPR = value.gpr();
+        speculateString(node->child1(), valueGPR);
 
-            flushRegisters();
-            callOperation(operationParseIntString, result, valueGPR, radixGPR);
-            m_jit.exceptionCheck();
-        }
-    } else {
-        if (node->child1().useKind() == UntypedUse) {
-            JSValueOperand value(this, node->child1());
-#if USE(JSVALUE64)
-            auto result = resultRegs.gpr();
-#else
-            auto result = resultRegs;
-#endif
-            JSValueRegs valueRegs = value.jsValueRegs();
+        flushRegisters();
+        JSValueRegsFlushedCallResult result(this);
+        JSValueRegs resultRegs = result.regs();
+        callOperation(operationParseIntString, resultRegs, valueGPR, radixGPR);
+        m_jit.exceptionCheck();
+        jsValueResult(resultRegs, node);
+        return;
+    }
 
-            flushRegisters();
-            callOperation(operationParseIntNoRadixGeneric, result, valueRegs);
-            m_jit.exceptionCheck();
-        } else {
-            SpeculateCellOperand value(this, node->child1());
-            GPRReg valueGPR = value.gpr();
-            speculateString(node->child1(), valueGPR);
+    if (node->child1().useKind() == UntypedUse) {
+        JSValueOperand value(this, node->child1());
+        JSValueRegs valueRegs = value.jsValueRegs();
 
-            flushRegisters();
-            callOperation(operationParseIntStringNoRadix, resultRegs, valueGPR);
-            m_jit.exceptionCheck();
-        }
+        flushRegisters();
+        JSValueRegsFlushedCallResult result(this);
+        JSValueRegs resultRegs = result.regs();
+        callOperation(operationParseIntNoRadixGeneric, resultRegs, valueRegs);
+        m_jit.exceptionCheck();
+        jsValueResult(resultRegs, node);
+        return;
     }
 
+    SpeculateCellOperand value(this, node->child1());
+    GPRReg valueGPR = value.gpr();
+    speculateString(node->child1(), valueGPR);
+
+    flushRegisters();
+    JSValueRegsFlushedCallResult result(this);
+    JSValueRegs resultRegs = result.regs();
+    callOperation(operationParseIntStringNoRadix, resultRegs, valueGPR);
+    m_jit.exceptionCheck();
     jsValueResult(resultRegs, node);
 }
 
@@ -3520,15 +3484,10 @@
         JSValueOperand right(this, rightChild);
         JSValueRegs leftRegs = left.jsValueRegs();
         JSValueRegs rightRegs = right.jsValueRegs();
-#if USE(JSVALUE64)
-        GPRTemporary result(this);
-        JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-        GPRTemporary resultTag(this);
-        GPRTemporary resultPayload(this);
-        JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
         flushRegisters();
+        JSValueRegsFlushedCallResult result(this);
+        JSValueRegs resultRegs = result.regs();
         callOperation(snippetSlowPathFunction, resultRegs, leftRegs, rightRegs);
         m_jit.exceptionCheck();
 
@@ -3667,15 +3626,10 @@
         JSValueOperand right(this, rightChild);
         JSValueRegs leftRegs = left.jsValueRegs();
         JSValueRegs rightRegs = right.jsValueRegs();
-#if USE(JSVALUE64)
-        GPRTemporary result(this);
-        JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-        GPRTemporary resultTag(this);
-        GPRTemporary resultPayload(this);
-        JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
         flushRegisters();
+        JSValueRegsFlushedCallResult result(this);
+        JSValueRegs resultRegs = result.regs();
         callOperation(snippetSlowPathFunction, resultRegs, leftRegs, rightRegs);
         m_jit.exceptionCheck();
 
@@ -3807,15 +3761,10 @@
         JSValueOperand right(this, rightChild);
         JSValueRegs leftRegs = left.jsValueRegs();
         JSValueRegs rightRegs = right.jsValueRegs();
-#if USE(JSVALUE64)
-        GPRTemporary result(this);
-        JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-        GPRTemporary resultTag(this);
-        GPRTemporary resultPayload(this);
-        JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
         flushRegisters();
+        JSValueRegsFlushedCallResult result(this);
+        JSValueRegs resultRegs = result.regs();
         callOperation(operationValueAddNotNumber, resultRegs, leftRegs, rightRegs);
         m_jit.exceptionCheck();
     
@@ -4831,15 +4780,10 @@
             JSValueOperand right(this, rightChild);
             JSValueRegs leftRegs = left.jsValueRegs();
             JSValueRegs rightRegs = right.jsValueRegs();
-#if USE(JSVALUE64)
-            GPRTemporary result(this);
-            JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-            GPRTemporary resultTag(this);
-            GPRTemporary resultPayload(this);
-            JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
             flushRegisters();
+            JSValueRegsFlushedCallResult result(this);
+            JSValueRegs resultRegs = result.regs();
             callOperation(operationValueMul, resultRegs, leftRegs, rightRegs);
             m_jit.exceptionCheck();
 
@@ -5013,15 +4957,10 @@
             JSValueOperand right(this, rightChild);
             JSValueRegs leftRegs = left.jsValueRegs();
             JSValueRegs rightRegs = right.jsValueRegs();
-#if USE(JSVALUE64)
-            GPRTemporary result(this);
-            JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-            GPRTemporary resultTag(this);
-            GPRTemporary resultPayload(this);
-            JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
             flushRegisters();
+            JSValueRegsFlushedCallResult result(this);
+            JSValueRegs resultRegs = result.regs();
             callOperation(operationValueDiv, resultRegs, leftRegs, rightRegs);
             m_jit.exceptionCheck();
 
@@ -5519,15 +5458,10 @@
 
     JSValueOperand argument(this, node->child1());
     JSValueRegs argumentRegs = argument.jsValueRegs();
-#if USE(JSVALUE64)
-    GPRTemporary result(this);
-    JSValueRegs resultRegs = JSValueRegs(result.gpr());
-#else
-    GPRTemporary resultTag(this);
-    GPRTemporary resultPayload(this);
-    JSValueRegs resultRegs = JSValueRegs(resultPayload.gpr(), resultTag.gpr());
-#endif
+
     flushRegisters();
+    JSValueRegsFlushedCallResult result(this);
+    JSValueRegs resultRegs = result.regs();
     J_JITOperation_EJ operation = nullptr;
     if (node->op() == ArithRound)
         operation = operationArithRound;
@@ -10394,21 +10328,12 @@
 {
     SpeculateCellOperand scope(this, node->child1());
     GPRReg scopeGPR = scope.gpr();
-#if USE(JSVALUE64)
-    GPRFlushedCallResult result(this);
-    GPRReg resultGPR = result.gpr();
     flushRegisters();
-    callOperation(operationResolveScopeForHoistingFuncDeclInEval, resultGPR, scopeGPR, identifierUID(node->identifierNumber()));
+    JSValueRegsFlushedCallResult result(this);
+    JSValueRegs resultRegs = result.regs();
+    callOperation(operationResolveScopeForHoistingFuncDeclInEval, resultRegs, scopeGPR, identifierUID(node->identifierNumber()));
     m_jit.exceptionCheck();
-    jsValueResult(result.gpr(), node);
-#else
-    flushRegisters();
-    GPRFlushedCallResult2 resultTag(this);
-    GPRFlushedCallResult resultPayload(this);
-    callOperation(operationResolveScopeForHoistingFuncDeclInEval, JSValueRegs(resultTag.gpr(), resultPayload.gpr()), scopeGPR, identifierUID(node->identifierNumber()));
-    m_jit.exceptionCheck();
-    jsValueResult(resultTag.gpr(), resultPayload.gpr(), node);
-#endif
+    jsValueResult(resultRegs, node);
 }
     
 void SpeculativeJIT::compileGetDynamicVar(Node* node)
@@ -10415,20 +10340,12 @@
 {
     SpeculateCellOperand scope(this, node->child1());
     GPRReg scopeGPR = scope.gpr();
-#if USE(JSVALUE64)
     flushRegisters();
-    GPRFlushedCallResult result(this);
-    callOperation(operationGetDynamicVar, result.gpr(), scopeGPR, identifierUID(node->identifierNumber()), node->getPutInfo());
+    JSValueRegsFlushedCallResult result(this);
+    JSValueRegs resultRegs = result.regs();
+    callOperation(operationGetDynamicVar, resultRegs, scopeGPR, identifierUID(node->identifierNumber()), node->getPutInfo());
     m_jit.exceptionCheck();
-    jsValueResult(result.gpr(), node);
-#else
-    flushRegisters();
-    GPRFlushedCallResult2 resultTag(this);
-    GPRFlushedCallResult resultPayload(this);
-    callOperation(operationGetDynamicVar, JSValueRegs(resultTag.gpr(), resultPayload.gpr()), scopeGPR, identifierUID(node->identifierNumber()), node->getPutInfo());
-    m_jit.exceptionCheck();
-    jsValueResult(resultTag.gpr(), resultPayload.gpr(), node);
-#endif
+    jsValueResult(resultRegs, node);
 }
 
 void SpeculativeJIT::compilePutDynamicVar(Node* node)

Modified: trunk/Source/_javascript_Core/dfg/DFGSpeculativeJIT.h (226259 => 226260)


--- trunk/Source/_javascript_Core/dfg/DFGSpeculativeJIT.h	2017-12-22 06:25:24 UTC (rev 226259)
+++ trunk/Source/_javascript_Core/dfg/DFGSpeculativeJIT.h	2017-12-22 08:19:55 UTC (rev 226260)
@@ -1453,6 +1453,11 @@
         m_jit.setupArgumentsWithExecState(arg1, arg2, TrustedImmPtr(uid));
         return appendCallSetResult(operation, result);
     }
+    JITCompiler::Call callOperation(J_JITOperation_EJscI operation, JSValueRegs result, GPRReg arg1, UniquedStringImpl* impl)
+    {
+        m_jit.setupArgumentsWithExecState(arg1, TrustedImmPtr(impl));
+        return appendCallSetResult(operation, result.payloadGPR());
+    }
     JITCompiler::Call callOperation(J_JITOperation_EJscI operation, GPRReg result, GPRReg arg1, UniquedStringImpl* impl)
     {
         m_jit.setupArgumentsWithExecState(arg1, TrustedImmPtr(impl));
@@ -1513,6 +1518,11 @@
         m_jit.setupArgumentsWithExecState(arg1, arg2, TrustedImmPtr(impl), TrustedImm32(value));
         return appendCall(operation);
     }
+    JITCompiler::Call callOperation(J_JITOperation_EOIUi operation, JSValueRegs result, GPRReg arg1, UniquedStringImpl* impl, unsigned value)
+    {
+        m_jit.setupArgumentsWithExecState(arg1, TrustedImmPtr(impl), TrustedImm32(value));
+        return appendCallSetResult(operation, result.payloadGPR());
+    }
     JITCompiler::Call callOperation(J_JITOperation_EOIUi operation, GPRReg result, GPRReg arg1, UniquedStringImpl* impl, unsigned value)
     {
         m_jit.setupArgumentsWithExecState(arg1, TrustedImmPtr(impl), TrustedImm32(value));
@@ -1570,6 +1580,11 @@
         m_jit.setupArgumentsWithExecState(arg1, arg2, arg3);
         return appendCallSetResult(operation, result);
     }
+    JITCompiler::Call callOperation(J_JITOperation_EJssZ operation, JSValueRegs result, GPRReg arg1, GPRReg arg2)
+    {
+        m_jit.setupArgumentsWithExecState(arg1, arg2);
+        return appendCallSetResult(operation, result.payloadGPR());
+    }
     JITCompiler::Call callOperation(J_JITOperation_EJssZ operation, GPRReg result, GPRReg arg1, GPRReg arg2)
     {
         m_jit.setupArgumentsWithExecState(arg1, arg2);
@@ -1625,9 +1640,14 @@
         m_jit.setupArgumentsWithExecState(arg1, arg2);
         return appendCallSetResult(operation, result);
     }
-    JITCompiler::Call callOperation(J_JITOperation_EJZ operation, GPRReg result, GPRReg arg1, GPRReg arg2)
+    JITCompiler::Call callOperation(J_JITOperation_EJZ operation, JSValueRegs result, JSValueRegs arg1, GPRReg arg2)
     {
-        m_jit.setupArgumentsWithExecState(arg1, arg2);
+        m_jit.setupArgumentsWithExecState(arg1.payloadGPR(), arg2);
+        return appendCallSetResult(operation, result.payloadGPR());
+    }
+    JITCompiler::Call callOperation(J_JITOperation_EJZ operation, GPRReg result, JSValueRegs arg1, GPRReg arg2)
+    {
+        m_jit.setupArgumentsWithExecState(arg1.payloadGPR(), arg2);
         return appendCallSetResult(operation, result);
     }
     JITCompiler::Call callOperation(J_JITOperation_EJA operation, JSValueRegs result, JSValueRegs arg1, GPRReg arg2)
@@ -1871,6 +1891,11 @@
         m_jit.setupArgumentsWithExecState(arg1, arg2, arg3, arg4);
         return appendCallSetResult(operation, result);
     }
+    JITCompiler::Call callOperation(J_JITOperation_ECC operation, JSValueRegs result, GPRReg arg1, GPRReg arg2)
+    {
+        m_jit.setupArgumentsWithExecState(arg1, arg2);
+        return appendCallSetResult(operation, result.payloadGPR());
+    }
     JITCompiler::Call callOperation(J_JITOperation_ECC operation, GPRReg result, GPRReg arg1, GPRReg arg2)
     {
         m_jit.setupArgumentsWithExecState(arg1, arg2);
@@ -3674,7 +3699,37 @@
     }
 };
 
+class JSValueRegsFlushedCallResult {
+public:
+    JSValueRegsFlushedCallResult(SpeculativeJIT* jit)
+#if USE(JSVALUE64)
+        : m_gpr(jit)
+#else
+        : m_payloadGPR(jit)
+        , m_tagGPR(jit)
+#endif
+    {
+    }
 
+    JSValueRegs regs()
+    {
+#if USE(JSVALUE64)
+        return JSValueRegs { m_gpr.gpr() };
+#else
+        return JSValueRegs { m_tagGPR.gpr(), m_payloadGPR.gpr() };
+#endif
+    }
+
+private:
+#if USE(JSVALUE64)
+    GPRFlushedCallResult m_gpr;
+#else
+    GPRFlushedCallResult m_payloadGPR;
+    GPRFlushedCallResult2 m_tagGPR;
+#endif
+};
+
+
 // === Speculative Operand types ===
 //
 // SpeculateInt32Operand, SpeculateStrictInt32Operand and SpeculateCellOperand.

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