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annotate include/llvm-c/LinkTimeOptimizer.h @ 65:35ab9e3560be

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remove null pointer access bug which occured if the callee codesegment is accessed by pointer on LowerCallTo().
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 11 Feb 2014 02:09:46 +0900
parents 95c75e76d11b
children c2174574ed3a
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1 //===-- llvm/LinkTimeOptimizer.h - LTO Public C Interface -------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This header provides a C API to use the LLVM link time optimization
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11 // library. This is intended to be used by linkers which are C-only in
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12 // their implementation for performing LTO.
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13 //
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14 //===----------------------------------------------------------------------===//
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15
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16 #ifndef LLVM_C_LINKTIMEOPTIMIZER_H
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17 #define LLVM_C_LINKTIMEOPTIMIZER_H
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18
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19 #ifdef __cplusplus
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20 extern "C" {
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21 #endif
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22
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23 /**
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24 * @defgroup LLVMCLinkTimeOptimizer Link Time Optimization
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25 * @ingroup LLVMC
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26 *
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27 * @{
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28 */
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29
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30 /// This provides a dummy type for pointers to the LTO object.
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31 typedef void* llvm_lto_t;
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32
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33 /// This provides a C-visible enumerator to manage status codes.
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34 /// This should map exactly onto the C++ enumerator LTOStatus.
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35 typedef enum llvm_lto_status {
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36 LLVM_LTO_UNKNOWN,
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37 LLVM_LTO_OPT_SUCCESS,
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38 LLVM_LTO_READ_SUCCESS,
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39 LLVM_LTO_READ_FAILURE,
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40 LLVM_LTO_WRITE_FAILURE,
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41 LLVM_LTO_NO_TARGET,
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42 LLVM_LTO_NO_WORK,
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43 LLVM_LTO_MODULE_MERGE_FAILURE,
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44 LLVM_LTO_ASM_FAILURE,
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45
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46 // Added C-specific error codes
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47 LLVM_LTO_NULL_OBJECT
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48 } llvm_lto_status_t;
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49
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50 /// This provides C interface to initialize link time optimizer. This allows
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51 /// linker to use dlopen() interface to dynamically load LinkTimeOptimizer.
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52 /// extern "C" helps, because dlopen() interface uses name to find the symbol.
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53 extern llvm_lto_t llvm_create_optimizer(void);
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54 extern void llvm_destroy_optimizer(llvm_lto_t lto);
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55
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56 extern llvm_lto_status_t llvm_read_object_file
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57 (llvm_lto_t lto, const char* input_filename);
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58 extern llvm_lto_status_t llvm_optimize_modules
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59 (llvm_lto_t lto, const char* output_filename);
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60
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61 /**
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62 * @}
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63 */
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64
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65 #ifdef __cplusplus
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66 }
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67 #endif
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68
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69 #endif