| //===-- llvm/Support/CodeGen.h - CodeGen Concepts ---------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file define some types which define code generation concepts. For |
| // example, relocation model. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_SUPPORT_CODEGEN_H |
| #define LLVM_SUPPORT_CODEGEN_H |
| |
| namespace llvm { |
| |
| // Relocation model types. |
| namespace Reloc { |
| // Cannot be named PIC due to collision with -DPIC |
| enum Model { Static, PIC_, DynamicNoPIC, ROPI, RWPI, ROPI_RWPI }; |
| } |
| |
| // Code model types. |
| namespace CodeModel { |
| // Sync changes with CodeGenCWrappers.h. |
| enum Model { Tiny, Small, Kernel, Medium, Large }; |
| } |
| |
| namespace PICLevel { |
| // This is used to map -fpic/-fPIC. |
| enum Level { NotPIC=0, SmallPIC=1, BigPIC=2 }; |
| } |
| |
| namespace PIELevel { |
| enum Level { Default=0, Small=1, Large=2 }; |
| } |
| |
| // TLS models. |
| namespace TLSModel { |
| enum Model { |
| GeneralDynamic, |
| LocalDynamic, |
| InitialExec, |
| LocalExec |
| }; |
| } |
| |
| // Code generation optimization level. |
| namespace CodeGenOpt { |
| enum Level { |
| None = 0, // -O0 |
| Less = 1, // -O1 |
| Default = 2, // -O2, -Os |
| Aggressive = 3 // -O3 |
| }; |
| } |
| |
| // Specify effect of frame pointer elimination optimization. |
| namespace FramePointer { |
| enum FP {All, NonLeaf, None}; |
| } |
| |
| } // end llvm namespace |
| |
| #endif |