1 //===- MachineSSAContext.cpp ------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// \file 9 /// 10 /// This file defines a specialization of the GenericSSAContext<X> 11 /// template class for Machine IR. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #include "llvm/CodeGen/MachineSSAContext.h" 16 #include "llvm/CodeGen/MachineBasicBlock.h" 17 #include "llvm/CodeGen/MachineInstr.h" 18 #include "llvm/Support/raw_ostream.h" 19 20 using namespace llvm; 21 22 MachineBasicBlock *MachineSSAContext::getEntryBlock(MachineFunction &F) { 23 return &F.front(); 24 } 25 26 void MachineSSAContext::setFunction(MachineFunction &Fn) { 27 MF = &Fn; 28 RegInfo = &MF->getRegInfo(); 29 } 30 31 Printable MachineSSAContext::print(MachineBasicBlock *Block) const { 32 return Printable([Block](raw_ostream &Out) { Block->printName(Out); }); 33 } 34 35 Printable MachineSSAContext::print(MachineInstr *I) const { 36 return Printable([I](raw_ostream &Out) { I->print(Out); }); 37 } 38 39 Printable MachineSSAContext::print(Register Value) const { 40 auto *MRI = RegInfo; 41 return Printable([MRI, Value](raw_ostream &Out) { 42 Out << printReg(Value, MRI->getTargetRegisterInfo(), 0, MRI); 43 44 if (Value) { 45 // Try to print the definition. 46 if (auto *Instr = MRI->getUniqueVRegDef(Value)) { 47 Out << ": "; 48 Instr->print(Out); 49 } 50 } 51 }); 52 } 53