diff options
| -rw-r--r-- | compiler-rt/lib/profile/InstrProfiling.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/compiler-rt/lib/profile/InstrProfiling.h b/compiler-rt/lib/profile/InstrProfiling.h index 9c7f03b08dd..d474b46e241 100644 --- a/compiler-rt/lib/profile/InstrProfiling.h +++ b/compiler-rt/lib/profile/InstrProfiling.h @@ -154,4 +154,33 @@ uint64_t __llvm_profile_get_version(void); uint64_t __llvm_profile_get_data_size(const __llvm_profile_data *Begin, const __llvm_profile_data *End); +/*! + * This variable is defined in InstrProfilingRuntime.c as a hidden + * symbol. Its main purpose is to enable profile runtime user to + * bypass runtime initialization code -- if the client code explicitly + * define this variable, then InstProfileRuntime.o won't be linked in. + * Note that this variable's visibility needs to be hidden so that the + * definition of this variable in an instrumented shared library won't + * affect runtime initialization decision of the main program. + */ +COMPILER_RT_VISIBILITY extern int __llvm_profile_runtime; +/*! + * This variable is defined in InstrProfilingFile.c. Its visibility is + * not hidden so that instrumented shared libraries and the main program + * can share the raw data file with the same name. + */ +extern int __llvm_profile_OwnsFilename; +extern const char *__llvm_profile_CurrentFilename; +/*! + * This variable is defined in InstrProfiling.c. Its main purpose is to + * encode the raw profile version value and other format related information + * such as whether the profile is from IR based instrumentation. The variable + * is defined as weak so that compiler can emit an overriding definition + * depending on user option. Since we don't support mixing FE and IR based + * data in the same raw profile data file (in other words, shared libs and + * main program are expected to be instrumented in the same way), there is + * no need for this variale to be hidden. + */ +extern uint64_t __llvm_profile_raw_version; + #endif /* PROFILE_INSTRPROFILING_H_ */ |
