compiler-rt/lib/profile/InstrProfilingRuntime.cpp

   1 //===- InstrProfilingRuntime.cpp - PGO runtime initialization -------------===//
   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 extern "C" {
  10
  11 #include "InstrProfiling.h"
  12
  13 static int RegisterRuntime() {
  14   __llvm_profile_initialize();
  15 #ifdef _AIX
  16   extern COMPILER_RT_VISIBILITY void *__llvm_profile_keep[];
  17   (void)*(void *volatile *)__llvm_profile_keep;
  18 #endif
  19   return 0;
  20 }
  21
  22 /* int __llvm_profile_runtime  */
  23 COMPILER_RT_VISIBILITY int INSTR_PROF_PROFILE_RUNTIME_VAR = RegisterRuntime();
  24 }