1 // WebAssemblyMachineFunctionInfo.h-WebAssembly machine function info-*- C++ -*-
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief This file declares WebAssembly-specific per-machine-function
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYMACHINEFUNCTIONINFO_H
17 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYMACHINEFUNCTIONINFO_H
19 #include "WebAssemblyRegisterInfo.h"
20 #include "llvm/CodeGen/MachineFunction.h"
21 #include "llvm/CodeGen/MachineRegisterInfo.h"
25 /// This class is derived from MachineFunctionInfo and contains private
26 /// WebAssembly-specific information for each MachineFunction.
27 class WebAssemblyFunctionInfo final : public MachineFunctionInfo {
30 std::vector<MVT> Params;
31 std::vector<MVT> Results;
33 /// A mapping from CodeGen vreg index to WebAssembly register number.
34 std::vector<unsigned> WARegs;
37 explicit WebAssemblyFunctionInfo(MachineFunction &MF) : MF(MF) {}
38 ~WebAssemblyFunctionInfo() override;
40 void addParam(MVT VT) { Params.push_back(VT); }
41 const std::vector<MVT> &getParams() const { return Params; }
43 void addResult(MVT VT) { Results.push_back(VT); }
44 const std::vector<MVT> &getResults() const { return Results; }
47 assert(WARegs.empty());
48 WARegs.resize(MF.getRegInfo().getNumVirtRegs(), -1u);
50 void setWAReg(unsigned VReg, unsigned WAReg) {
51 WARegs[TargetRegisterInfo::virtReg2Index(VReg)] = WAReg;
53 unsigned getWAReg(unsigned VReg) const {
54 return WARegs[TargetRegisterInfo::virtReg2Index(VReg)];
58 } // end namespace llvm