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[PGO] Use a function for creating variable for profile file name. NFC. 

Factored out the code for creating variable for profile file name to
a function.

llvm-svn: 353230
This commit is contained in:
Rong Xu 2019-02-05 22:34:45 +00:00
parent 63f9def72e
commit ce10d5ead4
3 changed files with 22 additions and 16 deletions
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3
llvm/include/llvm/ProfileData/InstrProf.h
View File

@ -1040,6 +1040,9 @@ struct Header {
void getMemOPSizeRangeFromOption(StringRef Str, int64_t &RangeStart,
int64_t &RangeLast);
// Create the variable for the profile file name.
void createProfileFileNameVar(Module &M, StringRef InstrProfileOutput);
} // end namespace llvm
#endif // LLVM_PROFILEDATA_INSTRPROF_H

17
llvm/lib/ProfileData/InstrProf.cpp
View File

@ -1011,4 +1011,21 @@ void getMemOPSizeRangeFromOption(StringRef MemOPSizeRange, int64_t &RangeStart,
assert(RangeLast >= RangeStart);
}
// Create the variable for the profile file name.
void createProfileFileNameVar(Module &M, StringRef InstrProfileOutput) {
if (InstrProfileOutput.empty())
return;
Constant *ProfileNameConst =
ConstantDataArray::getString(M.getContext(), InstrProfileOutput, true);
GlobalVariable *ProfileNameVar = new GlobalVariable(
M, ProfileNameConst->getType(), true, GlobalValue::WeakAnyLinkage,
ProfileNameConst, INSTR_PROF_QUOTE(INSTR_PROF_PROFILE_NAME_VAR));
Triple TT(M.getTargetTriple());
if (TT.supportsCOMDAT()) {
ProfileNameVar->setLinkage(GlobalValue::ExternalLinkage);
ProfileNameVar->setComdat(M.getOrInsertComdat(
StringRef(INSTR_PROF_QUOTE(INSTR_PROF_PROFILE_NAME_VAR))));
}
}
} // end namespace llvm

18
llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
View File

@ -967,22 +967,8 @@ void InstrProfiling::emitUses() {
}
void InstrProfiling::emitInitialization() {
StringRef InstrProfileOutput = Options.InstrProfileOutput;
if (!InstrProfileOutput.empty()) {
// Create variable for profile name.
Constant *ProfileNameConst =
ConstantDataArray::getString(M->getContext(), InstrProfileOutput, true);
GlobalVariable *ProfileNameVar = new GlobalVariable(
*M, ProfileNameConst->getType(), true, GlobalValue::WeakAnyLinkage,
ProfileNameConst, INSTR_PROF_QUOTE(INSTR_PROF_PROFILE_NAME_VAR));
if (TT.supportsCOMDAT()) {
ProfileNameVar->setLinkage(GlobalValue::ExternalLinkage);
ProfileNameVar->setComdat(M->getOrInsertComdat(
StringRef(INSTR_PROF_QUOTE(INSTR_PROF_PROFILE_NAME_VAR))));
}
}
// Create variable for profile name.
createProfileFileNameVar(*M, Options.InstrProfileOutput);
Function *RegisterF = M->getFunction(getInstrProfRegFuncsName());
if (!RegisterF)
return;