1 //===-- llvm/LinkTimeOptimizer.h - LTO Public C Interface -------*- 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 header provides a C API to use the LLVM link time optimization 11 // library. This is intended 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 59
