1 //===- VE.cpp -------------------------------------------------------------===// 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 #include "ABIInfoImpl.h" 10 #include "TargetInfo.h" 11 12 using namespace clang; 13 using namespace clang::CodeGen; 14 15 //===----------------------------------------------------------------------===// 16 // VE ABI Implementation. 17 // 18 namespace { 19 class VEABIInfo : public DefaultABIInfo { 20 public: 21 VEABIInfo(CodeGenTypes &CGT) : DefaultABIInfo(CGT) {} 22 23 private: 24 ABIArgInfo classifyReturnType(QualType RetTy) const; 25 ABIArgInfo classifyArgumentType(QualType RetTy) const; 26 void computeInfo(CGFunctionInfo &FI) const override; 27 }; 28 } // end anonymous namespace 29 30 ABIArgInfo VEABIInfo::classifyReturnType(QualType Ty) const { 31 if (Ty->isAnyComplexType()) 32 return ABIArgInfo::getDirect(); 33 uint64_t Size = getContext().getTypeSize(Ty); 34 if (Size < 64 && Ty->isIntegerType()) 35 return ABIArgInfo::getExtend(Ty); 36 return DefaultABIInfo::classifyReturnType(Ty); 37 } 38 39 ABIArgInfo VEABIInfo::classifyArgumentType(QualType Ty) const { 40 if (Ty->isAnyComplexType()) 41 return ABIArgInfo::getDirect(); 42 uint64_t Size = getContext().getTypeSize(Ty); 43 if (Size < 64 && Ty->isIntegerType()) 44 return ABIArgInfo::getExtend(Ty); 45 return DefaultABIInfo::classifyArgumentType(Ty); 46 } 47 48 void VEABIInfo::computeInfo(CGFunctionInfo &FI) const { 49 FI.getReturnInfo() = classifyReturnType(FI.getReturnType()); 50 for (auto &Arg : FI.arguments()) 51 Arg.info = classifyArgumentType(Arg.type); 52 } 53 54 namespace { 55 class VETargetCodeGenInfo : public TargetCodeGenInfo { 56 public: 57 VETargetCodeGenInfo(CodeGenTypes &CGT) 58 : TargetCodeGenInfo(std::make_unique<VEABIInfo>(CGT)) {} 59 // VE ABI requires the arguments of variadic and prototype-less functions 60 // are passed in both registers and memory. 61 bool isNoProtoCallVariadic(const CallArgList &args, 62 const FunctionNoProtoType *fnType) const override { 63 return true; 64 } 65 }; 66 } // end anonymous namespace 67 68 std::unique_ptr<TargetCodeGenInfo> 69 CodeGen::createVETargetCodeGenInfo(CodeGenModule &CGM) { 70 return std::make_unique<VETargetCodeGenInfo>(CGM.getTypes()); 71 } 72