//===-- Interpreter.h ------------------------------------------*- C++ -*--===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
// This header file defines the interpreter structure
//
//===----------------------------------------------------------------------===//
-#ifndef LLI_INTERPRETER_H
-#define LLI_INTERPRETER_H
+#ifndef LLVM_LIB_EXECUTIONENGINE_INTERPRETER_INTERPRETER_H
+#define LLVM_LIB_EXECUTIONENGINE_INTERPRETER_INTERPRETER_H
-#include "llvm/Function.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
-#include "llvm/Support/InstVisitor.h"
-#include "llvm/Support/CallSite.h"
-#include "llvm/Target/TargetData.h"
-#include "Support/DataTypes.h"
-
+#include "llvm/IR/CallSite.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/InstVisitor.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
namespace llvm {
-struct FunctionInfo; // Defined in ExecutionAnnotations.h
-class gep_type_iterator;
+class IntrinsicLowering;
+struct FunctionInfo;
+template<typename T> class generic_gep_type_iterator;
+class ConstantExpr;
+typedef generic_gep_type_iterator<User::const_op_iterator> gep_type_iterator;
+
// AllocaHolder - Object to track all of the blocks of memory allocated by
-// alloca. When the function returns, this object is poped off the execution
+// alloca. When the function returns, this object is popped off the execution
// stack, which causes the dtor to be run, which frees all the alloca'd memory.
//
class AllocaHolder {
- friend class AllocaHolderHandle;
- std::vector<void*> Allocations;
- unsigned RefCnt;
+ std::vector<void *> Allocations;
+
public:
- AllocaHolder() : RefCnt(0) {}
- void add(void *mem) { Allocations.push_back(mem); }
- ~AllocaHolder() {
- for (unsigned i = 0; i < Allocations.size(); ++i)
- free(Allocations[i]);
+ AllocaHolder() {}
+
+ // Make this type move-only. Define explicit move special members for MSVC.
+ AllocaHolder(AllocaHolder &&RHS) : Allocations(std::move(RHS.Allocations)) {}
+ AllocaHolder &operator=(AllocaHolder &&RHS) {
+ Allocations = std::move(RHS.Allocations);
+ return *this;
}
-};
-// AllocaHolderHandle gives AllocaHolder value semantics so we can stick it into
-// a vector...
-//
-class AllocaHolderHandle {
- AllocaHolder *H;
-public:
- AllocaHolderHandle() : H(new AllocaHolder()) { H->RefCnt++; }
- AllocaHolderHandle(const AllocaHolderHandle &AH) : H(AH.H) { H->RefCnt++; }
- ~AllocaHolderHandle() { if (--H->RefCnt == 0) delete H; }
+ ~AllocaHolder() {
+ for (void *Allocation : Allocations)
+ free(Allocation);
+ }
- void add(void *mem) { H->add(mem); }
+ void add(void *Mem) { Allocations.push_back(Mem); }
};
typedef std::vector<GenericValue> ValuePlaneTy;
Function *CurFunction;// The currently executing function
BasicBlock *CurBB; // The currently executing BB
BasicBlock::iterator CurInst; // The next instruction to execute
- std::map<Value *, GenericValue> Values; // LLVM values used in this invocation
- std::vector<GenericValue> VarArgs; // Values passed through an ellipsis
CallSite Caller; // Holds the call that called subframes.
// NULL if main func or debugger invoked fn
- AllocaHolderHandle Allocas; // Track memory allocated by alloca
+ std::map<Value *, GenericValue> Values; // LLVM values used in this invocation
+ std::vector<GenericValue> VarArgs; // Values passed through an ellipsis
+ AllocaHolder Allocas; // Track memory allocated by alloca
+
+ ExecutionContext() : CurFunction(nullptr), CurBB(nullptr), CurInst(nullptr) {}
+
+ ExecutionContext(ExecutionContext &&O)
+ : CurFunction(O.CurFunction), CurBB(O.CurBB), CurInst(O.CurInst),
+ Caller(O.Caller), Values(std::move(O.Values)),
+ VarArgs(std::move(O.VarArgs)), Allocas(std::move(O.Allocas)) {}
+
+ ExecutionContext &operator=(ExecutionContext &&O) {
+ CurFunction = O.CurFunction;
+ CurBB = O.CurBB;
+ CurInst = O.CurInst;
+ Caller = O.Caller;
+ Values = std::move(O.Values);
+ VarArgs = std::move(O.VarArgs);
+ Allocas = std::move(O.Allocas);
+ return *this;
+ }
};
// Interpreter - This class represents the entirety of the interpreter.
//
class Interpreter : public ExecutionEngine, public InstVisitor<Interpreter> {
- int ExitCode; // The exit code to be returned by the lli util
- TargetData TD;
+ GenericValue ExitValue; // The return value of the called function
+ DataLayout TD;
+ IntrinsicLowering *IL;
// The runtime stack of executing code. The top of the stack is the current
// function record.
std::vector<Function*> AtExitHandlers;
public:
- Interpreter(Module *M, bool isLittleEndian, bool isLongPointer);
- inline ~Interpreter() { }
+ explicit Interpreter(std::unique_ptr<Module> M);
+ ~Interpreter() override;
- /// runAtExitHandlers - Run any functions registered by the
- /// program's calls to atexit(3), which we intercept and store in
- /// AtExitHandlers.
+ /// runAtExitHandlers - Run any functions registered by the program's calls to
+ /// atexit(3), which we intercept and store in AtExitHandlers.
///
- void runAtExitHandlers ();
+ void runAtExitHandlers();
- /// create - Create an interpreter ExecutionEngine. This can never fail.
+ static void Register() {
+ InterpCtor = create;
+ }
+
+ /// Create an interpreter ExecutionEngine.
///
- static ExecutionEngine *create(Module *M);
+ static ExecutionEngine *create(std::unique_ptr<Module> M,
+ std::string *ErrorStr = nullptr);
/// run - Start execution with the specified function and arguments.
///
- virtual GenericValue run(Function *F,
- const std::vector<GenericValue> &ArgValues);
+ GenericValue runFunction(Function *F,
+ const std::vector<GenericValue> &ArgValues) override;
- /// recompileAndRelinkFunction - For the interpreter, functions are always
- /// up-to-date.
- ///
- virtual void *recompileAndRelinkFunction(Function *F) {
- return getPointerToFunction(F);
+ void *getPointerToNamedFunction(StringRef Name,
+ bool AbortOnFailure = true) override {
+ // FIXME: not implemented.
+ return nullptr;
}
// Methods used to execute code:
void visitReturnInst(ReturnInst &I);
void visitBranchInst(BranchInst &I);
void visitSwitchInst(SwitchInst &I);
+ void visitIndirectBrInst(IndirectBrInst &I);
void visitBinaryOperator(BinaryOperator &I);
- void visitAllocationInst(AllocationInst &I);
- void visitFreeInst(FreeInst &I);
+ void visitICmpInst(ICmpInst &I);
+ void visitFCmpInst(FCmpInst &I);
+ void visitAllocaInst(AllocaInst &I);
void visitLoadInst(LoadInst &I);
void visitStoreInst(StoreInst &I);
void visitGetElementPtrInst(GetElementPtrInst &I);
- void visitPHINode(PHINode &PN) { assert(0 && "PHI nodes already handled!"); }
- void visitCastInst(CastInst &I);
+ void visitPHINode(PHINode &PN) {
+ llvm_unreachable("PHI nodes already handled!");
+ }
+ void visitTruncInst(TruncInst &I);
+ void visitZExtInst(ZExtInst &I);
+ void visitSExtInst(SExtInst &I);
+ void visitFPTruncInst(FPTruncInst &I);
+ void visitFPExtInst(FPExtInst &I);
+ void visitUIToFPInst(UIToFPInst &I);
+ void visitSIToFPInst(SIToFPInst &I);
+ void visitFPToUIInst(FPToUIInst &I);
+ void visitFPToSIInst(FPToSIInst &I);
+ void visitPtrToIntInst(PtrToIntInst &I);
+ void visitIntToPtrInst(IntToPtrInst &I);
+ void visitBitCastInst(BitCastInst &I);
+ void visitSelectInst(SelectInst &I);
+
void visitCallSite(CallSite CS);
void visitCallInst(CallInst &I) { visitCallSite (CallSite (&I)); }
void visitInvokeInst(InvokeInst &I) { visitCallSite (CallSite (&I)); }
- void visitUnwindInst(UnwindInst &I);
+ void visitUnreachableInst(UnreachableInst &I);
+
+ void visitShl(BinaryOperator &I);
+ void visitLShr(BinaryOperator &I);
+ void visitAShr(BinaryOperator &I);
- void visitShl(ShiftInst &I);
- void visitShr(ShiftInst &I);
- void visitVANextInst(VANextInst &I);
void visitVAArgInst(VAArgInst &I);
+ void visitExtractElementInst(ExtractElementInst &I);
+ void visitInsertElementInst(InsertElementInst &I);
+ void visitShuffleVectorInst(ShuffleVectorInst &I);
+
+ void visitExtractValueInst(ExtractValueInst &I);
+ void visitInsertValueInst(InsertValueInst &I);
+
void visitInstruction(Instruction &I) {
- std::cerr << I;
- assert(0 && "Instruction not interpretable yet!");
+ errs() << I << "\n";
+ llvm_unreachable("Instruction not interpretable yet!");
}
- GenericValue callExternalFunction(Function *F,
+ GenericValue callExternalFunction(Function *F,
const std::vector<GenericValue> &ArgVals);
void exitCalled(GenericValue GV);
}
GenericValue *getFirstVarArg () {
- return &(ECStack[ECStack.size () - 2].VarArgs[0]);
+ return &(ECStack.back ().VarArgs[0]);
}
- //FIXME: private:
-public:
+private: // Helper functions
GenericValue executeGEPOperation(Value *Ptr, gep_type_iterator I,
- gep_type_iterator E, ExecutionContext &SF);
+ gep_type_iterator E, ExecutionContext &SF);
-private: // Helper functions
// SwitchToNewBasicBlock - Start execution in a new basic block and run any
// PHI nodes in the top of the block. This is used for intraprocedural
// control flow.
- //
+ //
void SwitchToNewBasicBlock(BasicBlock *Dest, ExecutionContext &SF);
- void *getPointerToFunction(Function *F) { return (void*)F; }
+ void *getPointerToFunction(Function *F) override { return (void*)F; }
- void initializeExecutionEngine();
+ void initializeExecutionEngine() { }
void initializeExternalFunctions();
+ GenericValue getConstantExprValue(ConstantExpr *CE, ExecutionContext &SF);
GenericValue getOperandValue(Value *V, ExecutionContext &SF);
- GenericValue executeCastOperation(Value *SrcVal, const Type *Ty,
- ExecutionContext &SF);
- void popStackAndReturnValueToCaller(const Type *RetTy, GenericValue Result);
+ GenericValue executeTruncInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeSExtInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeZExtInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPTruncInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPExtInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPToUIInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPToSIInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeUIToFPInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeSIToFPInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executePtrToIntInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeIntToPtrInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeBitCastInst(Value *SrcVal, Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeCastOperation(Instruction::CastOps opcode, Value *SrcVal,
+ Type *Ty, ExecutionContext &SF);
+ void popStackAndReturnValueToCaller(Type *RetTy, GenericValue Result);
+
};
} // End llvm namespace
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