1 | //===-- llvm/Support/CodeGen.h - CodeGen Concepts ---------------*- C++ -*-===// |
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 | // This file define some types which define code generation concepts. For |
10 | // example, relocation model. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_SUPPORT_CODEGEN_H |
15 | #define LLVM_SUPPORT_CODEGEN_H |
16 | |
17 | namespace llvm { |
18 | |
19 | // Relocation model types. |
20 | namespace Reloc { |
21 | // Cannot be named PIC due to collision with -DPIC |
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 { Tiny, 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 = 0, // -O0 |
54 | Less = 1, // -O1 |
55 | Default = 2, // -O2, -Os |
56 | Aggressive = 3 // -O3 |
57 | }; |
58 | } |
59 | |
60 | /// These enums are meant to be passed into addPassesToEmitFile to indicate |
61 | /// what type of file to emit, and returned by it to indicate what type of |
62 | /// file could actually be made. |
63 | enum CodeGenFileType { |
64 | CGFT_AssemblyFile, |
65 | CGFT_ObjectFile, |
66 | CGFT_Null // Do not emit any output. |
67 | }; |
68 | |
69 | // Specify what functions should keep the frame pointer. |
70 | enum class FramePointerKind { None, NonLeaf, All }; |
71 | |
72 | } // end llvm namespace |
73 | |
74 | #endif |
75 | |