1 //===-- MachineCodeForInstruction.cpp -------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Representation of the sequence of machine instructions created for a single
11 // VM instruction. Additionally records information about hidden and implicit
12 // values used by the machine instructions: about hidden values used by the
13 // machine instructions:
15 // "Temporary values" are intermediate values used in the machine instruction
16 // sequence, but not in the VM instruction. Note that such values should be
17 // treated as pure SSA values with no interpretation of their operands (i.e., as
18 // a TmpInstruction object which actually represents such a value).
20 // (2) "Implicit uses" are values used in the VM instruction but not in the
21 // machine instruction sequence
23 //===----------------------------------------------------------------------===//
25 #include "llvm/CodeGen/MachineCodeForInstruction.h"
26 #include "llvm/Function.h"
27 #include "llvm/CodeGen/MachineInstr.h"
28 #include "llvm/CodeGen/MachineFunction.h"
29 #include "llvm/CodeGen/MachineFunctionInfo.h"
30 #include "../Target/SparcV9/MachineInstrAnnot.h"
33 MachineCodeForInstruction &MachineCodeForInstruction::get(const Instruction *I){
34 MachineFunction &MF = MachineFunction::get(I->getParent()->getParent());
35 return MF.getInfo()->MCFIEntries[I];
37 void MachineCodeForInstruction::destroy(const Instruction *I) {
38 MachineFunction &MF = MachineFunction::get(I->getParent()->getParent());
39 MF.getInfo()->MCFIEntries.erase(I);
43 MachineCodeForInstruction::dropAllReferences()
45 for (unsigned i=0, N=tempVec.size(); i < N; i++)
46 cast<Instruction>(tempVec[i])->dropAllReferences();
50 MachineCodeForInstruction::~MachineCodeForInstruction() {
51 // Let go of all uses in temp. instructions
54 // Free the Value objects created to hold intermediate values
55 for (unsigned i=0, N=tempVec.size(); i < N; i++)
58 // do not free the MachineInstr objects allocated. they are managed
59 // by the ilist in MachineBasicBlock
61 // Free the CallArgsDescriptor if it exists.