1//===--- SPIRVCallLowering.h - Call lowering --------------------*- 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//
9// This file describes how to lower LLVM calls to machine code calls.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_SPIRV_SPIRVCALLLOWERING_H
14#define LLVM_LIB_TARGET_SPIRV_SPIRVCALLLOWERING_H
15
16#include "SPIRVGlobalRegistry.h"
17#include "llvm/CodeGen/GlobalISel/CallLowering.h"
18
19namespace llvm {
20
21class SPIRVGlobalRegistry;
22class SPIRVTargetLowering;
23
24class SPIRVCallLowering : public CallLowering {
25private:
26  // Used to create and assign function, argument, and return type information.
27  SPIRVGlobalRegistry *GR;
28
29public:
30  SPIRVCallLowering(const SPIRVTargetLowering &TLI, SPIRVGlobalRegistry *GR);
31
32  // Built OpReturn or OpReturnValue.
33  bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
34                   ArrayRef<Register> VRegs, FunctionLoweringInfo &FLI,
35                   Register SwiftErrorVReg) const override;
36
37  // Build OpFunction, OpFunctionParameter, and any EntryPoint or Linkage data.
38  bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
39                            ArrayRef<ArrayRef<Register>> VRegs,
40                            FunctionLoweringInfo &FLI) const override;
41
42  // Build OpCall, or replace with a builtin function.
43  bool lowerCall(MachineIRBuilder &MIRBuilder,
44                 CallLoweringInfo &Info) const override;
45};
46} // end namespace llvm
47
48#endif // LLVM_LIB_TARGET_SPIRV_SPIRVCALLLOWERING_H
49