181ad6265SDimitry Andric //===--- SPIRVCallLowering.h - Call lowering --------------------*- C++ -*-===// 281ad6265SDimitry Andric // 381ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 481ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 581ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 681ad6265SDimitry Andric // 781ad6265SDimitry Andric //===----------------------------------------------------------------------===// 881ad6265SDimitry Andric // 981ad6265SDimitry Andric // This file describes how to lower LLVM calls to machine code calls. 1081ad6265SDimitry Andric // 1181ad6265SDimitry Andric //===----------------------------------------------------------------------===// 1281ad6265SDimitry Andric 1381ad6265SDimitry Andric #ifndef LLVM_LIB_TARGET_SPIRV_SPIRVCALLLOWERING_H 1481ad6265SDimitry Andric #define LLVM_LIB_TARGET_SPIRV_SPIRVCALLLOWERING_H 1581ad6265SDimitry Andric 16fcaf7f86SDimitry Andric #include "SPIRVGlobalRegistry.h" 1781ad6265SDimitry Andric #include "llvm/CodeGen/GlobalISel/CallLowering.h" 1881ad6265SDimitry Andric 1981ad6265SDimitry Andric namespace llvm { 2081ad6265SDimitry Andric 2181ad6265SDimitry Andric class SPIRVGlobalRegistry; 2281ad6265SDimitry Andric class SPIRVTargetLowering; 2381ad6265SDimitry Andric 2481ad6265SDimitry Andric class SPIRVCallLowering : public CallLowering { 2581ad6265SDimitry Andric private: 2681ad6265SDimitry Andric // Used to create and assign function, argument, and return type information. 2781ad6265SDimitry Andric SPIRVGlobalRegistry *GR; 2881ad6265SDimitry Andric 29*0fca6ea1SDimitry Andric // Used to postpone producing of indirect function pointer types 30*0fca6ea1SDimitry Andric // after all indirect calls info is collected 31*0fca6ea1SDimitry Andric struct SPIRVIndirectCall { 32*0fca6ea1SDimitry Andric const Type *RetTy = nullptr; 33*0fca6ea1SDimitry Andric SmallVector<Type *> ArgTys; 34*0fca6ea1SDimitry Andric SmallVector<Register> ArgRegs; 35*0fca6ea1SDimitry Andric Register Callee; 36*0fca6ea1SDimitry Andric }; 37*0fca6ea1SDimitry Andric void produceIndirectPtrTypes(MachineIRBuilder &MIRBuilder) const; 38*0fca6ea1SDimitry Andric mutable SmallVector<SPIRVIndirectCall> IndirectCalls; 39*0fca6ea1SDimitry Andric 4081ad6265SDimitry Andric public: 41fcaf7f86SDimitry Andric SPIRVCallLowering(const SPIRVTargetLowering &TLI, SPIRVGlobalRegistry *GR); 4281ad6265SDimitry Andric 4381ad6265SDimitry Andric // Built OpReturn or OpReturnValue. 4481ad6265SDimitry Andric bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val, 4581ad6265SDimitry Andric ArrayRef<Register> VRegs, FunctionLoweringInfo &FLI, 4681ad6265SDimitry Andric Register SwiftErrorVReg) const override; 4781ad6265SDimitry Andric 4881ad6265SDimitry Andric // Build OpFunction, OpFunctionParameter, and any EntryPoint or Linkage data. 4981ad6265SDimitry Andric bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, 5081ad6265SDimitry Andric ArrayRef<ArrayRef<Register>> VRegs, 5181ad6265SDimitry Andric FunctionLoweringInfo &FLI) const override; 5281ad6265SDimitry Andric 5381ad6265SDimitry Andric // Build OpCall, or replace with a builtin function. 5481ad6265SDimitry Andric bool lowerCall(MachineIRBuilder &MIRBuilder, 5581ad6265SDimitry Andric CallLoweringInfo &Info) const override; 5681ad6265SDimitry Andric }; 5781ad6265SDimitry Andric } // end namespace llvm 5881ad6265SDimitry Andric 5981ad6265SDimitry Andric #endif // LLVM_LIB_TARGET_SPIRV_SPIRVCALLLOWERING_H 60