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
18namespace 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 { 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, // -O0
54 Less, // -O1
55 Default, // -O2, -Os
56 Aggressive // -O3
57 };
58 }
59
60 // Specify effect of frame pointer elimination optimization.
61 namespace FramePointer {
62 enum FP {All, NonLeaf, None};
63 }
64
65} // end llvm namespace
66
67#endif
68