1 //===-- llvm/Support/CodeGen.h - CodeGen Concepts ---------------*- 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 define some types which define code generation concepts. For 11 // example, relocation model. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_SUPPORT_CODEGEN_H 16 #define LLVM_SUPPORT_CODEGEN_H 17 18 namespace llvm { 19 20 // Relocation model types. 21 namespace Reloc { 22 enum Model { Static, PIC_, DynamicNoPIC, ROPI, RWPI, ROPI_RWPI }; 23 } 24 25 // Code model types. 26 namespace CodeModel { 27 // Sync changes with CodeGenCWrappers.h. 28 enum Model { Small, Kernel, Medium, Large }; 29 } 30 31 namespace PICLevel { 32 // This is used to map -fpic/-fPIC. 33 enum Level { NotPIC=0, SmallPIC=1, BigPIC=2 }; 34 } 35 36 namespace PIELevel { 37 enum Level { Default=0, Small=1, Large=2 }; 38 } 39 40 // TLS models. 41 namespace TLSModel { 42 enum Model { 43 GeneralDynamic, 44 LocalDynamic, 45 InitialExec, 46 LocalExec 47 }; 48 } 49 50 // Code generation optimization level. 51 namespace CodeGenOpt { 52 enum Level { 53 None, // -O0 54 Less, // -O1 55 Default, // -O2, -Os 56 Aggressive // -O3 57 }; 58 } 59 60 } // end llvm namespace 61 62 #endif 63
