1 //===- CodeGenIntrinsic.h - Intrinsic Class Wrapper ------------*- 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 // This file defines a wrapper class for the 'Intrinsic' TableGen class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef CODEGEN_INTRINSIC_H 15 #define CODEGEN_INTRINSIC_H 16 17 #include <string> 18 #include <vector> 19 #include "llvm/CodeGen/ValueTypes.h" 20 21 namespace llvm { 22 class Record; 23 class RecordKeeper; 24 class CodeGenTarget; 25 26 struct CodeGenIntrinsic { 27 Record *TheDef; // The actual record defining this intrinsic. 28 std::string Name; // The name of the LLVM function "llvm.bswap.i32" 29 std::string EnumName; // The name of the enum "bswap_i32" 30 std::string GCCBuiltinName;// Name of the corresponding GCC builtin, or "". 31 std::string TargetPrefix; // Target prefix, e.g. "ppc" for t-s intrinsics. 32 33 /// IntrinsicSignature - This structure holds the return values and 34 /// parameter values of an intrinsic. If the number of return values is > 1, 35 /// then the intrinsic implicitly returns a first-class aggregate. The 36 /// numbering of the types starts at 0 with the first return value and 37 /// continues from there through the parameter list. This is useful for 38 /// "matching" types. 39 struct IntrinsicSignature { 40 /// RetVTs - The MVT::SimpleValueType for each return type. Note that this 41 /// list is only populated when in the context of a target .td file. When 42 /// building Intrinsics.td, this isn't available, because we don't know 43 /// the target pointer size. 44 std::vector<MVT::SimpleValueType> RetVTs; 45 46 /// RetTypeDefs - The records for each return type. 47 std::vector<Record*> RetTypeDefs; 48 49 /// ParamVTs - The MVT::SimpleValueType for each parameter type. Note that 50 /// this list is only populated when in the context of a target .td file. 51 /// When building Intrinsics.td, this isn't available, because we don't 52 /// know the target pointer size. 53 std::vector<MVT::SimpleValueType> ParamVTs; 54 55 /// ParamTypeDefs - The records for each parameter type. 56 std::vector<Record*> ParamTypeDefs; 57 }; 58 59 IntrinsicSignature IS; 60 61 // Memory mod/ref behavior of this intrinsic. 62 enum { 63 NoMem, ReadArgMem, ReadMem, ReadWriteArgMem, ReadWriteMem 64 } ModRef; 65 66 /// This is set to true if the intrinsic is overloaded by its argument 67 /// types. 68 bool isOverloaded; 69 70 /// isCommutative - True if the intrinsic is commutative. 71 bool isCommutative; 72 73 /// canThrow - True if the intrinsic can throw. 74 bool canThrow; 75 76 enum ArgAttribute { 77 NoCapture 78 }; 79 std::vector<std::pair<unsigned, ArgAttribute> > ArgumentAttributes; 80 81 CodeGenIntrinsic(Record *R); 82 }; 83 84 /// LoadIntrinsics - Read all of the intrinsics defined in the specified 85 /// .td file. 86 std::vector<CodeGenIntrinsic> LoadIntrinsics(const RecordKeeper &RC, 87 bool TargetOnly); 88 } 89 90 #endif 91