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Merge llvm, clang, lld, lldb, compiler-rt and libc++ r305575, and update
[FreeBSD/FreeBSD.git] / contrib / llvm / lib / Target / BPF / BPFAsmPrinter.cpp
1 //===-- BPFAsmPrinter.cpp - BPF LLVM assembly writer ----------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains a printer that converts from our internal representation
11 // of machine-dependent LLVM code to the BPF assembly language.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #include "BPF.h"
16 #include "BPFInstrInfo.h"
17 #include "BPFMCInstLower.h"
18 #include "BPFTargetMachine.h"
19 #include "InstPrinter/BPFInstPrinter.h"
20 #include "llvm/CodeGen/AsmPrinter.h"
21 #include "llvm/CodeGen/MachineConstantPool.h"
22 #include "llvm/CodeGen/MachineFunctionPass.h"
23 #include "llvm/CodeGen/MachineInstr.h"
24 #include "llvm/CodeGen/MachineModuleInfo.h"
25 #include "llvm/MC/MCAsmInfo.h"
26 #include "llvm/MC/MCInst.h"
27 #include "llvm/MC/MCStreamer.h"
28 #include "llvm/MC/MCSymbol.h"
29 #include "llvm/Support/TargetRegistry.h"
30 #include "llvm/Support/raw_ostream.h"
31 using namespace llvm;
32
33 #define DEBUG_TYPE "asm-printer"
34
35 namespace {
36 class BPFAsmPrinter : public AsmPrinter {
37 public:
38   explicit BPFAsmPrinter(TargetMachine &TM,
39                          std::unique_ptr<MCStreamer> Streamer)
40       : AsmPrinter(TM, std::move(Streamer)) {}
41
42   StringRef getPassName() const override { return "BPF Assembly Printer"; }
43
44   void EmitInstruction(const MachineInstr *MI) override;
45 };
46 } // namespace
47
48 void BPFAsmPrinter::EmitInstruction(const MachineInstr *MI) {
49
50   BPFMCInstLower MCInstLowering(OutContext, *this);
51
52   MCInst TmpInst;
53   MCInstLowering.Lower(MI, TmpInst);
54   EmitToStreamer(*OutStreamer, TmpInst);
55 }
56
57 // Force static initialization.
58 extern "C" void LLVMInitializeBPFAsmPrinter() {
59   RegisterAsmPrinter<BPFAsmPrinter> X(getTheBPFleTarget());
60   RegisterAsmPrinter<BPFAsmPrinter> Y(getTheBPFbeTarget());
61   RegisterAsmPrinter<BPFAsmPrinter> Z(getTheBPFTarget());
62 }