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 module deimos.llvm.c.linktimeoptimizer; 17 18 import deimos.llvm.c.core; 19 20 extern(C) nothrow: 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 alias 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 alias int llvm_lto_status; 35 enum : llvm_lto_status { 36 LLVM_LTO_UNKNOWN, 37 LLVM_LTO_OPT_SUCCESS, 38 LLVM_LTO_READ_SUCCESS, 39 LLVM_LTO_READ_FAILURE, 40 LLVM_LTO_WRITE_FAILURE, 41 LLVM_LTO_NO_TARGET, 42 LLVM_LTO_NO_WORK, 43 LLVM_LTO_MODULE_MERGE_FAILURE, 44 LLVM_LTO_ASM_FAILURE, 45 46 // Added C-specific error codes 47 LLVM_LTO_NULL_OBJECT 48 } 49 alias llvm_lto_status llvm_lto_status_t; 50 51 /// This provides C interface to initialize link time optimizer. This allows 52 /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer. 53 /// extern "C" helps, because dlopen() interface uses name to find the symbol. 54 extern llvm_lto_t llvm_create_optimizer(); 55 extern void llvm_destroy_optimizer(llvm_lto_t lto); 56 57 extern llvm_lto_status_t llvm_read_object_file 58 (llvm_lto_t lto, const(char)* input_filename); 59 extern llvm_lto_status_t llvm_optimize_modules 60 (llvm_lto_t lto, const(char)* output_filename); 61 62 /** 63 * @} 64 */