R600/SI: Add comments for number of used registers.
[oota-llvm.git] / lib / Target / R600 / AMDGPUAsmPrinter.h
1 //===-- AMDGPUAsmPrinter.h - Print AMDGPU assembly code ---------*- C++ -*-===//
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 /// \file
11 /// \brief AMDGPU Assembly printer class.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #ifndef AMDGPU_ASMPRINTER_H
16 #define AMDGPU_ASMPRINTER_H
17
18 #include "llvm/CodeGen/AsmPrinter.h"
19 #include <string>
20 #include <vector>
21
22 namespace llvm {
23
24 class AMDGPUAsmPrinter : public AsmPrinter {
25 private:
26   struct SIProgramInfo {
27     unsigned NumSGPR;
28     unsigned NumVGPR;
29   };
30
31   void getSIProgramInfo(SIProgramInfo &Out, MachineFunction &MF) const;
32   void findNumUsedRegistersSI(MachineFunction &MF,
33                               unsigned &NumSGPR,
34                               unsigned &NumVGPR) const;
35
36   /// \brief Emit register usage information so that the GPU driver
37   /// can correctly setup the GPU state.
38   void EmitProgramInfoR600(MachineFunction &MF);
39   void EmitProgramInfoSI(MachineFunction &MF, const SIProgramInfo &KernelInfo);
40
41 public:
42   explicit AMDGPUAsmPrinter(TargetMachine &TM, MCStreamer &Streamer);
43
44   virtual bool runOnMachineFunction(MachineFunction &MF);
45
46   virtual const char *getPassName() const {
47     return "AMDGPU Assembly Printer";
48   }
49
50   /// Implemented in AMDGPUMCInstLower.cpp
51   virtual void EmitInstruction(const MachineInstr *MI);
52
53 protected:
54   bool DisasmEnabled;
55   std::vector<std::string> DisasmLines, HexLines;
56   size_t DisasmLineMaxLen;
57 };
58
59 } // End anonymous llvm
60
61 #endif //AMDGPU_ASMPRINTER_H