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instructions. Instead, keep a map of instructions -> MCFI objects in the already sparc-specific class MachineFunctionInfo. This will slow down the sparc backend a bit, but it does not penalize the rest of LLVM! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14438 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
2.4 KiB
C++
64 lines
2.4 KiB
C++
//===-- MachineCodeForInstruction.cpp -------------------------------------===//
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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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// Representation of the sequence of machine instructions created for a single
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// VM instruction. Additionally records information about hidden and implicit
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// values used by the machine instructions: about hidden values used by the
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// machine instructions:
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//
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// "Temporary values" are intermediate values used in the machine instruction
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// sequence, but not in the VM instruction. Note that such values should be
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// treated as pure SSA values with no interpretation of their operands (i.e., as
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// a TmpInstruction object which actually represents such a value).
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//
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// (2) "Implicit uses" are values used in the VM instruction but not in the
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// machine instruction sequence
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineCodeForInstruction.h"
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#include "llvm/Function.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineFunctionInfo.h"
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#include "../Target/SparcV9/MachineInstrAnnot.h"
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using namespace llvm;
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MachineCodeForInstruction &MachineCodeForInstruction::get(const Instruction *I){
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MachineFunction &MF = MachineFunction::get(I->getParent()->getParent());
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return MF.getInfo()->MCFIEntries[I];
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}
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void MachineCodeForInstruction::destroy(const Instruction *I) {
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MachineFunction &MF = MachineFunction::get(I->getParent()->getParent());
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MF.getInfo()->MCFIEntries.erase(I);
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}
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void
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MachineCodeForInstruction::dropAllReferences()
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{
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for (unsigned i=0, N=tempVec.size(); i < N; i++)
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cast<Instruction>(tempVec[i])->dropAllReferences();
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}
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MachineCodeForInstruction::~MachineCodeForInstruction() {
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// Let go of all uses in temp. instructions
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dropAllReferences();
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// Free the Value objects created to hold intermediate values
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for (unsigned i=0, N=tempVec.size(); i < N; i++)
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delete tempVec[i];
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// do not free the MachineInstr objects allocated. they are managed
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// by the ilist in MachineBasicBlock
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// Free the CallArgsDescriptor if it exists.
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delete callArgsDesc;
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}
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