LLVM  9.0.0svn
LinkTimeOptimizer.h
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1 //===-- llvm/LinkTimeOptimizer.h - LTO Public C Interface -------*- 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 header provides a C API to use the LLVM link time optimization
10 // library. This is intended to be used by linkers which are C-only in
11 // their implementation for performing LTO.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_C_LINKTIMEOPTIMIZER_H
16 #define LLVM_C_LINKTIMEOPTIMIZER_H
17 
18 #ifdef __cplusplus
19 extern "C" {
20 #endif
21 
22 /**
23  * @defgroup LLVMCLinkTimeOptimizer Link Time Optimization
24  * @ingroup LLVMC
25  *
26  * @{
27  */
28 
29  /// This provides a dummy type for pointers to the LTO object.
30  typedef void* llvm_lto_t;
31 
32  /// This provides a C-visible enumerator to manage status codes.
33  /// This should map exactly onto the C++ enumerator LTOStatus.
34  typedef enum llvm_lto_status {
44 
45  // Added C-specific error codes
48 
49  /// This provides C interface to initialize link time optimizer. This allows
50  /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer.
51  /// extern "C" helps, because dlopen() interface uses name to find the symbol.
52  extern llvm_lto_t llvm_create_optimizer(void);
53  extern void llvm_destroy_optimizer(llvm_lto_t lto);
54 
55  extern llvm_lto_status_t llvm_read_object_file
56  (llvm_lto_t lto, const char* input_filename);
57  extern llvm_lto_status_t llvm_optimize_modules
58  (llvm_lto_t lto, const char* output_filename);
59 
60 /**
61  * @}
62  */
63 
64 #ifdef __cplusplus
65 }
66 #endif
67 
68 #endif
llvm_lto_status
This provides a C-visible enumerator to manage status codes.
llvm_lto_status_t llvm_optimize_modules(llvm_lto_t lto, const char *output_filename)
llvm_lto_status_t llvm_read_object_file(llvm_lto_t lto, const char *input_filename)
llvm_lto_t llvm_create_optimizer(void)
This provides C interface to initialize link time optimizer.
enum llvm_lto_status llvm_lto_status_t
This provides a C-visible enumerator to manage status codes.
void * llvm_lto_t
This provides a dummy type for pointers to the LTO object.
void llvm_destroy_optimizer(llvm_lto_t lto)