b850251d3e
Compiler-rt miscalculates the number of entries in the __llvm_prf_data section on i386 Darwin. This results in a number of test failures (which we started catching after r261344). The fix we attempted earlier is insufficient (r261683). It caused some tests to start passing again, but that hid the fact that we drop some data entries. This patch should fix the real problem. It fixes the way we compute DataSize by taking into account the way the Darwin linker lays out __llvm_prf_data. Differential Revision: http://reviews.llvm.org/D17623 llvm-svn: 261957
139 lines
4.4 KiB
C
139 lines
4.4 KiB
C
/*===- InstrProfiling.h- Support library for PGO instrumentation ----------===*\
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|*
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|* The LLVM Compiler Infrastructure
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|*
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|* This file is distributed under the University of Illinois Open Source
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|* License. See LICENSE.TXT for details.
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|*
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\*===----------------------------------------------------------------------===*/
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#ifndef PROFILE_INSTRPROFILING_H_
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#define PROFILE_INSTRPROFILING_H_
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#include "InstrProfilingPort.h"
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#include "InstrProfData.inc"
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enum ValueKind {
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#define VALUE_PROF_KIND(Enumerator, Value) Enumerator = Value,
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#include "InstrProfData.inc"
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};
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typedef void *IntPtrT;
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typedef struct COMPILER_RT_ALIGNAS(INSTR_PROF_DATA_ALIGNMENT)
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__llvm_profile_data {
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#define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer) Type Name;
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#include "InstrProfData.inc"
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} __llvm_profile_data;
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typedef struct __llvm_profile_header {
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#define INSTR_PROF_RAW_HEADER(Type, Name, Initializer) Type Name;
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#include "InstrProfData.inc"
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} __llvm_profile_header;
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/*!
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* \brief Get number of bytes necessary to pad the argument to eight
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* byte boundary.
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*/
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uint8_t __llvm_profile_get_num_padding_bytes(uint64_t SizeInBytes);
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/*!
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* \brief Get required size for profile buffer.
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*/
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uint64_t __llvm_profile_get_size_for_buffer(void);
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/*!
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* \brief Write instrumentation data to the given buffer.
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*
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* \pre \c Buffer is the start of a buffer at least as big as \a
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* __llvm_profile_get_size_for_buffer().
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*/
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int __llvm_profile_write_buffer(char *Buffer);
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const __llvm_profile_data *__llvm_profile_begin_data(void);
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const __llvm_profile_data *__llvm_profile_end_data(void);
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const char *__llvm_profile_begin_names(void);
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const char *__llvm_profile_end_names(void);
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uint64_t *__llvm_profile_begin_counters(void);
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uint64_t *__llvm_profile_end_counters(void);
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/*!
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* \brief Clear profile counters to zero.
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*
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*/
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void __llvm_profile_reset_counters(void);
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/*!
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* \brief Counts the number of times a target value is seen.
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*
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* Records the target value for the CounterIndex if not seen before. Otherwise,
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* increments the counter associated w/ the target value.
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* void __llvm_profile_instrument_target(uint64_t TargetValue, void *Data,
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* uint32_t CounterIndex);
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*/
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void INSTR_PROF_VALUE_PROF_FUNC(
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#define VALUE_PROF_FUNC_PARAM(ArgType, ArgName, ArgLLVMType) ArgType ArgName
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#include "InstrProfData.inc"
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);
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/*!
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* \brief Prepares the value profiling data for output.
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*
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* Returns an array of pointers to value profile data.
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*/
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struct ValueProfData;
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struct ValueProfData **__llvm_profile_gather_value_data(uint64_t *Size);
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/*!
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* \brief Write instrumentation data to the current file.
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*
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* Writes to the file with the last name given to \a *
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* __llvm_profile_set_filename(),
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* or if it hasn't been called, the \c LLVM_PROFILE_FILE environment variable,
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* or if that's not set, the last name given to
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* \a __llvm_profile_override_default_filename(), or if that's not set,
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* \c "default.profraw".
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*/
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int __llvm_profile_write_file(void);
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/*!
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* \brief Set the filename for writing instrumentation data.
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*
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* Sets the filename to be used for subsequent calls to
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* \a __llvm_profile_write_file().
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*
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* \c Name is not copied, so it must remain valid. Passing NULL resets the
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* filename logic to the default behaviour.
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*/
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void __llvm_profile_set_filename(const char *Name);
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/*!
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* \brief Set the filename for writing instrumentation data, unless the
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* \c LLVM_PROFILE_FILE environment variable was set.
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*
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* Unless overridden, sets the filename to be used for subsequent calls to
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* \a __llvm_profile_write_file().
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*
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* \c Name is not copied, so it must remain valid. Passing NULL resets the
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* filename logic to the default behaviour (unless the \c LLVM_PROFILE_FILE
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* was set in which case it has no effect).
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*/
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void __llvm_profile_override_default_filename(const char *Name);
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/*! \brief Register to write instrumentation data to file at exit. */
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int __llvm_profile_register_write_file_atexit(void);
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/*! \brief Initialize file handling. */
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void __llvm_profile_initialize_file(void);
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/*! \brief Get the magic token for the file format. */
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uint64_t __llvm_profile_get_magic(void);
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/*! \brief Get the version of the file format. */
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uint64_t __llvm_profile_get_version(void);
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/*! \brief Get the number of entries in the profile data section. */
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uint64_t __llvm_profile_get_data_size(const __llvm_profile_data *Begin,
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const __llvm_profile_data *End);
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#endif /* PROFILE_INSTRPROFILING_H_ */
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