| //===-- 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 "llvm/CodeGen/MachineCodeForInstruction.h" |
| #include "llvm/Function.h" |
| #include "llvm/CodeGen/MachineInstr.h" |
| #include "llvm/CodeGen/MachineFunction.h" |
| #include "llvm/CodeGen/MachineFunctionInfo.h" |
| #include "../Target/SparcV9/MachineInstrAnnot.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; |
| } |