Chris Lattner | ddc6f35 | 2007-01-06 23:53:43 +0000 | [diff] [blame] | 1 | //===-- llvm/LinkTimeOptimizer.h - LTO Public C Interface -------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 7ed47a1 | 2007-12-29 19:59:42 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Chris Lattner | ddc6f35 | 2007-01-06 23:53:43 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This header provides a C API to use the LLVM link time optimization |
| 11 | // library. This is inteded to be used by linkers which are C-only in |
| 12 | // their implementation for performing LTO. |
| 13 | // |
| 14 | //===----------------------------------------------------------------------===// |
| 15 | |
| 16 | #ifndef __LTO_CAPI_H__ |
| 17 | #define __LTO_CAPI_H__ |
| 18 | |
| 19 | #ifdef __cplusplus |
| 20 | extern "C" { |
| 21 | #endif |
| 22 | |
| 23 | /// This provides a dummy type for pointers to the LTO object. |
| 24 | typedef void* llvm_lto_t; |
| 25 | |
| 26 | /// This provides a C-visible enumerator to manage status codes. |
| 27 | /// This should map exactly onto the C++ enumerator LTOStatus. |
| 28 | typedef enum llvm_lto_status { |
| 29 | LLVM_LTO_UNKNOWN, |
| 30 | LLVM_LTO_OPT_SUCCESS, |
| 31 | LLVM_LTO_READ_SUCCESS, |
| 32 | LLVM_LTO_READ_FAILURE, |
| 33 | LLVM_LTO_WRITE_FAILURE, |
| 34 | LLVM_LTO_NO_TARGET, |
| 35 | LLVM_LTO_NO_WORK, |
| 36 | LLVM_LTO_MODULE_MERGE_FAILURE, |
| 37 | LLVM_LTO_ASM_FAILURE, |
| 38 | |
| 39 | // Added C-specific error codes |
| 40 | LLVM_LTO_NULL_OBJECT |
| 41 | } llvm_lto_status_t; |
| 42 | |
| 43 | /// This provides C interface to initialize link time optimizer. This allows |
| 44 | /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer. |
| 45 | /// extern "C" helps, because dlopen() interface uses name to find the symbol. |
| 46 | extern llvm_lto_t llvm_create_optimizer(void); |
| 47 | extern void llvm_destroy_optimizer(llvm_lto_t lto); |
| 48 | |
| 49 | extern llvm_lto_status_t llvm_read_object_file |
| 50 | (llvm_lto_t lto, const char* input_filename); |
| 51 | extern llvm_lto_status_t llvm_optimize_modules |
| 52 | (llvm_lto_t lto, const char* output_filename); |
| 53 | |
| 54 | #ifdef __cplusplus |
| 55 | } |
| 56 | #endif |
| 57 | |
| 58 | #endif |