Class SSAInvokeDynamicInstruction
java.lang.Object
com.ibm.wala.ssa.SSAInstruction
com.ibm.wala.ssa.SSAAbstractInvokeInstruction
com.ibm.wala.ssa.SSAInvokeInstruction
com.ibm.wala.ssa.SSAInvokeDynamicInstruction
Used for representing the JVML invokedynamic instruction. When generated by the Java compiler for
compilation of Java lambdas / method references, the instruction components are:
- the bootstrap method, which refers to
LambdaMetafactory.metafactory(java.lang.invoke.MethodHandles.Lookup, String, java.lang.invoke.MethodType, java.lang.invoke.MethodType, java.lang.invoke.MethodHandle, java.lang.invoke.MethodType)
, - the call site, which contains the static arguments passed to the bootstrap method (i.e., the method signature for the corresponding functional interface method), and
- the standard invoke instruction parameters, representing the dynamic arguments (captured local variables)
The behavior of WALA for other uses of invokedynamic is currently unspecified (though it aims to not crash for any valid use).
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Nested Class Summary
Nested classes/interfaces inherited from class com.ibm.wala.ssa.SSAInstruction
SSAInstruction.IVisitor, SSAInstruction.Visitor
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Field Summary
Fields inherited from class com.ibm.wala.ssa.SSAInvokeInstruction
params, result
Fields inherited from class com.ibm.wala.ssa.SSAAbstractInvokeInstruction
exception, site
Fields inherited from class com.ibm.wala.ssa.SSAInstruction
NO_INDEX
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Constructor Summary
ConstructorDescriptionSSAInvokeDynamicInstruction
(int iindex, int[] params, int exception, CallSiteReference site, BootstrapMethodsReader.BootstrapMethod bootstrap) SSAInvokeDynamicInstruction
(int iindex, int result, int[] params, int exception, CallSiteReference site, BootstrapMethodsReader.BootstrapMethod bootstrap) -
Method Summary
Modifier and TypeMethodDescriptioncopyForSSA
(SSAInstructionFactory insts, int[] defs, int[] uses) This method is meant to be used during SSA conversion for an IR that is not in SSA form.toString
(SymbolTable symbolTable) Mark the instruction as an invokedynamic.Methods inherited from class com.ibm.wala.ssa.SSAInvokeInstruction
assertParamsKosher, getNumberOfPositionalParameters, getNumberOfReturnValues, getNumberOfUses, getReturnValue, getUse, hashCode, visit
Methods inherited from class com.ibm.wala.ssa.SSAAbstractInvokeInstruction
getCallSite, getDeclaredResultType, getDeclaredTarget, getDef, getDef, getException, getInvocationCode, getNumberOfDefs, getProgramCounter, getReceiver, hasDef, isDispatch, isFallThrough, isPEI, isSpecial, isStatic
Methods inherited from class com.ibm.wala.ssa.SSAInstruction
equals, getExceptionTypes, getValueString, iIndex, setInstructionIndex, toString
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Constructor Details
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SSAInvokeDynamicInstruction
public SSAInvokeDynamicInstruction(int iindex, int result, int[] params, int exception, CallSiteReference site, BootstrapMethodsReader.BootstrapMethod bootstrap) -
SSAInvokeDynamicInstruction
public SSAInvokeDynamicInstruction(int iindex, int[] params, int exception, CallSiteReference site, BootstrapMethodsReader.BootstrapMethod bootstrap)
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Method Details
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copyForSSA
Description copied from class:SSAInstruction
This method is meant to be used during SSA conversion for an IR that is not in SSA form. It creates a new SSAInstruction of the same type as the receiver, with a combination of the receiver's uses and defs and those from the method parameters.In particular, if the 'defs' parameter is null, then the new instruction has the same defs as the receiver. If 'defs' is not null, it must be an array with a size equal to the number of defs that the receiver instruction has. In this case, the new instruction has defs taken from the array. The uses of the new instruction work in the same way with the 'uses' parameter.
Note that this only applies to CAst-based IR translation, since Java bytecode-based IR generation uses a different SSA construction mechanism.
TODO: move this into the SSAInstructionFactory
- Overrides:
copyForSSA
in classSSAInvokeInstruction
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getBootstrap
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toString
Mark the instruction as an invokedynamic. The String will also contain the invocation type of the boostrap method- Overrides:
toString
in classSSAAbstractInvokeInstruction
- Parameters:
symbolTable
- the symbol table- Returns:
- result of
SSAAbstractInvokeInstruction.toString(SymbolTable)
with "[invokedynamic] " pre-pended
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