[compiler-rt] r269993 - [profile] Allow max vals per site to be controllable at runtime
Xinliang David Li via llvm-commits
llvm-commits at lists.llvm.org
Wed May 18 15:34:05 PDT 2016
Author: davidxl
Date: Wed May 18 17:34:05 2016
New Revision: 269993
URL: http://llvm.org/viewvc/llvm-project?rev=269993&view=rev
Log:
[profile] Allow max vals per site to be controllable at runtime
Modified:
compiler-rt/trunk/lib/profile/InstrProfilingFile.c
compiler-rt/trunk/lib/profile/InstrProfilingInternal.h
compiler-rt/trunk/lib/profile/InstrProfilingValue.c
Modified: compiler-rt/trunk/lib/profile/InstrProfilingFile.c
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/profile/InstrProfilingFile.c?rev=269993&r1=269992&r2=269993&view=diff
==============================================================================
--- compiler-rt/trunk/lib/profile/InstrProfilingFile.c (original)
+++ compiler-rt/trunk/lib/profile/InstrProfilingFile.c Wed May 18 17:34:05 2016
@@ -254,6 +254,8 @@ int __llvm_profile_register_write_file_a
if (HasBeenRegistered)
return 0;
+ lprofSetupValueProfiler();
+
HasBeenRegistered = 1;
return atexit(writeFileWithoutReturn);
}
Modified: compiler-rt/trunk/lib/profile/InstrProfilingInternal.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/profile/InstrProfilingInternal.h?rev=269993&r1=269992&r2=269993&view=diff
==============================================================================
--- compiler-rt/trunk/lib/profile/InstrProfilingInternal.h (original)
+++ compiler-rt/trunk/lib/profile/InstrProfilingInternal.h Wed May 18 17:34:05 2016
@@ -150,10 +150,13 @@ void lprofMergeValueProfData(struct Valu
VPDataReaderType *lprofGetVPDataReader();
+void lprofSetupValueProfiler();
+
COMPILER_RT_VISIBILITY extern char *(*GetEnvHook)(const char *);
COMPILER_RT_VISIBILITY extern void (*FreeHook)(void *);
COMPILER_RT_VISIBILITY extern uint8_t *DynamicBufferIOBuffer;
COMPILER_RT_VISIBILITY extern uint32_t VPBufferSize;
+COMPILER_RT_VISIBILITY extern uint32_t VPMaxNumValsPerSite;
extern void (*VPMergeHook)(struct ValueProfData *, __llvm_profile_data *);
#endif
Modified: compiler-rt/trunk/lib/profile/InstrProfilingValue.c
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/profile/InstrProfilingValue.c?rev=269993&r1=269992&r2=269993&view=diff
==============================================================================
--- compiler-rt/trunk/lib/profile/InstrProfilingValue.c (original)
+++ compiler-rt/trunk/lib/profile/InstrProfilingValue.c Wed May 18 17:34:05 2016
@@ -24,6 +24,18 @@
return NULL; \
}
+COMPILER_RT_VISIBILITY uint32_t VPMaxNumValsPerSite =
+ INSTR_PROF_MAX_NUM_VAL_PER_SITE;
+
+COMPILER_RT_VISIBILITY void lprofSetupValueProfiler() {
+ const char *Str = 0;
+ Str = getenv("LLVM_VP_MAX_NUM_VALS_PER_SITE");
+ if (Str && Str[0])
+ VPMaxNumValsPerSite = atoi(Str);
+ if (VPMaxNumValsPerSite > INSTR_PROF_MAX_NUM_VAL_PER_SITE)
+ VPMaxNumValsPerSite = INSTR_PROF_MAX_NUM_VAL_PER_SITE;
+}
+
/* This method is only used in value profiler mock testing. */
COMPILER_RT_VISIBILITY void
__llvm_profile_set_num_value_sites(__llvm_profile_data *Data,
@@ -94,7 +106,7 @@ __llvm_profile_instrument_target(uint64_
++VDataCount;
}
- if (VDataCount >= INSTR_PROF_MAX_NUM_VAL_PER_SITE)
+ if (VDataCount >= VPMaxNumValsPerSite)
return;
CurrentVNode = (ValueProfNode *)calloc(1, sizeof(ValueProfNode));
More information about the llvm-commits
mailing list