mirror of
https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11224 91177308-0d34-0410-b5e6-96231b3b80d8
179 lines
6.7 KiB
C++
179 lines
6.7 KiB
C++
//===-- iCall.cpp - Implement the call & invoke instructions --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the call and invoke instructions.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/iOther.h"
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#include "llvm/iTerminators.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Function.h"
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#include "llvm/Support/CallSite.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// CallInst Implementation
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//===----------------------------------------------------------------------===//
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CallInst::CallInst(Value *Func, const std::vector<Value*> ¶ms,
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const std::string &Name, Instruction *InsertBefore)
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: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
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->getElementType())->getReturnType(),
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Instruction::Call, Name, InsertBefore) {
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Operands.reserve(1+params.size());
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Operands.push_back(Use(Func, this));
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const FunctionType *FTy =
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cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
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assert((params.size() == FTy->getNumParams() ||
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(FTy->isVarArg() && params.size() > FTy->getNumParams())) &&
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"Calling a function with bad signature");
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for (unsigned i = 0; i != params.size(); i++)
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Operands.push_back(Use(params[i], this));
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}
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CallInst::CallInst(Value *Func, const std::string &Name,
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Instruction *InsertBefore)
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: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
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->getElementType())->getReturnType(),
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Instruction::Call, Name, InsertBefore) {
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Operands.reserve(1);
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Operands.push_back(Use(Func, this));
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const FunctionType *MTy =
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cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
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assert(MTy->getNumParams() == 0 && "Calling a function with bad signature");
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}
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CallInst::CallInst(Value *Func, Value* A, const std::string &Name,
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Instruction *InsertBefore)
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: Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
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->getElementType())->getReturnType(),
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Instruction::Call, Name, InsertBefore) {
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Operands.reserve(2);
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Operands.push_back(Use(Func, this));
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const FunctionType *MTy =
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cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
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assert((MTy->getNumParams() == 1 ||
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(MTy->isVarArg() && MTy->getNumParams() == 0)) &&
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"Calling a function with bad signature");
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Operands.push_back(Use(A, this));
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}
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CallInst::CallInst(const CallInst &CI)
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: Instruction(CI.getType(), Instruction::Call) {
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Operands.reserve(CI.Operands.size());
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for (unsigned i = 0; i < CI.Operands.size(); ++i)
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Operands.push_back(Use(CI.Operands[i], this));
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}
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const Function *CallInst::getCalledFunction() const {
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if (const Function *F = dyn_cast<Function>(Operands[0]))
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return F;
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if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Operands[0]))
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return cast<Function>(CPR->getValue());
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return 0;
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}
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Function *CallInst::getCalledFunction() {
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if (Function *F = dyn_cast<Function>(Operands[0]))
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return F;
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if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Operands[0]))
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return cast<Function>(CPR->getValue());
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return 0;
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}
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//===----------------------------------------------------------------------===//
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// InvokeInst Implementation
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//===----------------------------------------------------------------------===//
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InvokeInst::InvokeInst(Value *Func, BasicBlock *IfNormal,
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BasicBlock *IfException,
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const std::vector<Value*> ¶ms,
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const std::string &Name, Instruction *InsertBefore)
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: TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
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->getElementType())->getReturnType(),
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Instruction::Invoke, Name, InsertBefore) {
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Operands.reserve(3+params.size());
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Operands.push_back(Use(Func, this));
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Operands.push_back(Use((Value*)IfNormal, this));
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Operands.push_back(Use((Value*)IfException, this));
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const FunctionType *MTy =
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cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
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assert((params.size() == MTy->getNumParams()) ||
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(MTy->isVarArg() && params.size() > MTy->getNumParams()) &&
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"Calling a function with bad signature");
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for (unsigned i = 0; i < params.size(); i++)
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Operands.push_back(Use(params[i], this));
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}
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InvokeInst::InvokeInst(Value *Func, BasicBlock *IfNormal,
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BasicBlock *IfException,
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const std::vector<Value*> ¶ms,
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const std::string &Name, BasicBlock *InsertAtEnd)
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: TerminatorInst(cast<FunctionType>(cast<PointerType>(Func->getType())
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->getElementType())->getReturnType(),
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Instruction::Invoke, Name) {
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Operands.reserve(3+params.size());
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Operands.push_back(Use(Func, this));
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Operands.push_back(Use((Value*)IfNormal, this));
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Operands.push_back(Use((Value*)IfException, this));
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const FunctionType *MTy =
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cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
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assert((params.size() == MTy->getNumParams()) ||
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(MTy->isVarArg() && params.size() > MTy->getNumParams()) &&
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"Calling a function with bad signature");
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for (unsigned i = 0; i < params.size(); i++)
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Operands.push_back(Use(params[i], this));
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if (InsertAtEnd)
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InsertAtEnd->getInstList().push_back(this);
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}
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InvokeInst::InvokeInst(const InvokeInst &CI)
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: TerminatorInst(CI.getType(), Instruction::Invoke) {
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Operands.reserve(CI.Operands.size());
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for (unsigned i = 0; i < CI.Operands.size(); ++i)
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Operands.push_back(Use(CI.Operands[i], this));
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}
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const Function *InvokeInst::getCalledFunction() const {
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if (const Function *F = dyn_cast<Function>(Operands[0]))
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return F;
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if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Operands[0]))
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return cast<Function>(CPR->getValue());
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return 0;
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}
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Function *InvokeInst::getCalledFunction() {
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if (Function *F = dyn_cast<Function>(Operands[0]))
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return F;
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if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Operands[0]))
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return cast<Function>(CPR->getValue());
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return 0;
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}
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Function *CallSite::getCalledFunction() const {
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Value *Callee = getCalledValue();
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if (Function *F = dyn_cast<Function>(Callee))
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return F;
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if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Callee))
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return cast<Function>(CPR->getValue());
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return 0;
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}
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