+++ /dev/null
-//===-- MachineCodeForInstruction.cpp -------------------------------------===//
-//
-// 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.
-//
-//===----------------------------------------------------------------------===//
-//
-// Representation of the sequence of machine instructions created for a single
-// VM instruction. Additionally records information about hidden and implicit
-// values used by the machine instructions: about hidden values used by the
-// machine instructions:
-//
-// "Temporary values" are intermediate values used in the machine instruction
-// sequence, but not in the VM instruction. Note that such values should be
-// treated as pure SSA values with no interpretation of their operands (i.e., as
-// a TmpInstruction object which actually represents such a value).
-//
-// (2) "Implicit uses" are values used in the VM instruction but not in the
-// machine instruction sequence
-//
-//===----------------------------------------------------------------------===//
-
-#include "../Target/SparcV9/MachineCodeForInstruction.h"
-#include "llvm/Function.h"
-#include "llvm/Instructions.h"
-#include "llvm/Type.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "../Target/SparcV9/MachineFunctionInfo.h"
-#include "../Target/SparcV9/MachineInstrAnnot.h"
-#include "../Target/SparcV9/SparcV9TmpInstr.h"
-using namespace llvm;
-
-MachineCodeForInstruction &MachineCodeForInstruction::get(const Instruction *I){
- MachineFunction &MF = MachineFunction::get(I->getParent()->getParent());
- return MF.getInfo()->MCFIEntries[I];
-}
-void MachineCodeForInstruction::destroy(const Instruction *I) {
- MachineFunction &MF = MachineFunction::get(I->getParent()->getParent());
- MF.getInfo()->MCFIEntries.erase(I);
-}
-
-void
-MachineCodeForInstruction::dropAllReferences()
-{
- for (unsigned i=0, N=tempVec.size(); i < N; i++)
- cast<Instruction>(tempVec[i])->dropAllReferences();
-}
-
-
-MachineCodeForInstruction::~MachineCodeForInstruction() {
- // Let go of all uses in temp. instructions
- dropAllReferences();
-
- // Free the Value objects created to hold intermediate values
- for (unsigned i=0, N=tempVec.size(); i < N; i++)
- delete tempVec[i];
-
- // do not free the MachineInstr objects allocated. they are managed
- // by the ilist in MachineBasicBlock
-
- // Free the CallArgsDescriptor if it exists.
- delete callArgsDesc;
-}
-
-
-CallArgsDescriptor::CallArgsDescriptor(CallInst* _callInstr,
- TmpInstruction* _retAddrReg,
- bool _isVarArgs, bool _noPrototype)
- : callInstr(_callInstr),
- funcPtr(isa<Function>(_callInstr->getCalledValue())
- ? NULL : _callInstr->getCalledValue()),
- retAddrReg(_retAddrReg),
- isVarArgs(_isVarArgs),
- noPrototype(_noPrototype) {
- unsigned int numArgs = callInstr->getNumOperands();
- argInfoVec.reserve(numArgs);
- assert(callInstr->getOperand(0) == callInstr->getCalledValue()
- && "Operand 0 is ignored in the loop below!");
- for (unsigned int i=1; i < numArgs; ++i)
- argInfoVec.push_back(CallArgInfo(callInstr->getOperand(i)));
-
- // Enter this object in the MachineCodeForInstr object of the CallInst.
- // This transfers ownership of this object.
- MachineCodeForInstruction::get(callInstr).setCallArgsDescriptor(this);
-}
-
-CallInst *CallArgsDescriptor::getReturnValue() const {
- return (callInstr->getType() == Type::VoidTy? NULL : callInstr);
-}
-
-// Mechanism to get the descriptor for a CALL MachineInstr.
-// We get the LLVM CallInstr from the ret. addr. register argument
-// of the CALL MachineInstr (which is explicit operand #3 for indirect
-// calls or the last implicit operand for direct calls). We then get
-// the CallArgsDescriptor from the MachineCodeForInstruction object for
-// the CallInstr.
-// This is roundabout but avoids adding a new map or annotation just
-// to keep track of CallArgsDescriptors.
-//
-CallArgsDescriptor *CallArgsDescriptor::get(const MachineInstr* MI) {
- const TmpInstruction* retAddrReg =
- cast<TmpInstruction>(isa<Function>(MI->getOperand(0).getVRegValue())
- ? MI->getImplicitRef(MI->getNumImplicitRefs()-1)
- : MI->getOperand(2).getVRegValue());
-
- assert(retAddrReg->getNumOperands() == 1 &&
- isa<CallInst>(retAddrReg->getOperand(0)) &&
- "Location of callInstr arg for CALL instr. changed? FIX THIS CODE!");
-
- const CallInst* callInstr = cast<CallInst>(retAddrReg->getOperand(0));
-
- CallArgsDescriptor* desc =
- MachineCodeForInstruction::get(callInstr).getCallArgsDescriptor();
- assert(desc->getCallInst()==callInstr && "Incorrect call args descriptor?");
- return desc;
-}