blob: 00b31e1ee7d446c8f083b511c4c967c6e474c8a8 [file] [log] [blame]
/*===- InstrProfiling.c - Support library for PGO instrumentation ---------===*\
|*
|* The LLVM Compiler Infrastructure
|*
|* This file is distributed under the University of Illinois Open Source
|* License. See LICENSE.TXT for details.
|*
\*===----------------------------------------------------------------------===*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "InstrProfiling.h"
#include "InstrProfilingInternal.h"
#define INSTR_PROF_VALUE_PROF_DATA
#include "InstrProfData.inc"
COMPILER_RT_WEAK uint64_t INSTR_PROF_RAW_VERSION_VAR = INSTR_PROF_RAW_VERSION;
COMPILER_RT_VISIBILITY uint64_t __llvm_profile_get_magic(void) {
return sizeof(void *) == sizeof(uint64_t) ? (INSTR_PROF_RAW_MAGIC_64)
: (INSTR_PROF_RAW_MAGIC_32);
}
static unsigned ProfileDumped = 0;
COMPILER_RT_VISIBILITY unsigned lprofProfileDumped() {
return ProfileDumped;
}
COMPILER_RT_VISIBILITY void lprofSetProfileDumped() {
ProfileDumped = 1;
}
/* Return the number of bytes needed to add to SizeInBytes to make it
* the result a multiple of 8.
*/
COMPILER_RT_VISIBILITY uint8_t
__llvm_profile_get_num_padding_bytes(uint64_t SizeInBytes) {
return 7 & (sizeof(uint64_t) - SizeInBytes % sizeof(uint64_t));
}
COMPILER_RT_VISIBILITY uint64_t __llvm_profile_get_version(void) {
return __llvm_profile_raw_version;
}
COMPILER_RT_VISIBILITY void __llvm_profile_reset_counters(void) {
uint64_t *I = __llvm_profile_begin_counters();
uint64_t *E = __llvm_profile_end_counters();
memset(I, 0, sizeof(uint64_t) * (E - I));
const __llvm_profile_data *DataBegin = __llvm_profile_begin_data();
const __llvm_profile_data *DataEnd = __llvm_profile_end_data();
const __llvm_profile_data *DI;
for (DI = DataBegin; DI < DataEnd; ++DI) {
uint64_t CurrentVSiteCount = 0;
uint32_t VKI, i;
if (!DI->Values)
continue;
ValueProfNode **ValueCounters = (ValueProfNode **)DI->Values;
for (VKI = IPVK_First; VKI <= IPVK_Last; ++VKI)
CurrentVSiteCount += DI->NumValueSites[VKI];
for (i = 0; i < CurrentVSiteCount; ++i) {
ValueProfNode *CurrentVNode = ValueCounters[i];
while (CurrentVNode) {
CurrentVNode->Count = 0;
CurrentVNode = CurrentVNode->Next;
}
}
}
ProfileDumped = 0;
}