1 //===-- llvm/Support/CodeGen.h - CodeGen Concepts ---------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 // This file define some types which define code generation concepts. For
10 // example, relocation model.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_SUPPORT_CODEGEN_H
15 #define LLVM_SUPPORT_CODEGEN_H
19 // Relocation model types.
21 // Cannot be named PIC due to collision with -DPIC
22 enum Model { Static, PIC_, DynamicNoPIC, ROPI, RWPI, ROPI_RWPI };
27 // Sync changes with CodeGenCWrappers.h.
28 enum Model { Tiny, Small, Kernel, Medium, Large };
32 // This is used to map -fpic/-fPIC.
33 enum Level { NotPIC=0, SmallPIC=1, BigPIC=2 };
37 enum Level { Default=0, Small=1, Large=2 };
50 // Code generation optimization level.
51 namespace CodeGenOpt {
55 Default = 2, // -O2, -Os
60 // Specify effect of frame pointer elimination optimization.
61 namespace FramePointer {
62 enum FP {All, NonLeaf, None};
65 } // end llvm namespace