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 };
23   }
24 
25   // Code model types.
26   namespace CodeModel {
27     // Sync changes with CodeGenCWrappers.h.
28     enum Model { Default, JITDefault, 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