diff options
Diffstat (limited to 'llvm/lib/ProfileData/InstrProf.cpp')
| -rw-r--r-- | llvm/lib/ProfileData/InstrProf.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp index 8a2ff7769f1..ccb651a22b3 100644 --- a/llvm/lib/ProfileData/InstrProf.cpp +++ b/llvm/lib/ProfileData/InstrProf.cpp @@ -1011,6 +1011,25 @@ void getMemOPSizeRangeFromOption(StringRef MemOPSizeRange, int64_t &RangeStart, assert(RangeLast >= RangeStart); } +// Create a COMDAT variable INSTR_PROF_RAW_VERSION_VAR to make the runtime +// aware this is an ir_level profile so it can set the version flag. +void createIRLevelProfileFlagVar(Module &M, bool IsCS) { + const StringRef VarName(INSTR_PROF_QUOTE(INSTR_PROF_RAW_VERSION_VAR)); + Type *IntTy64 = Type::getInt64Ty(M.getContext()); + uint64_t ProfileVersion = (INSTR_PROF_RAW_VERSION | VARIANT_MASK_IR_PROF); + if (IsCS) + ProfileVersion |= VARIANT_MASK_CSIR_PROF; + auto IRLevelVersionVariable = new GlobalVariable( + M, IntTy64, true, GlobalValue::WeakAnyLinkage, + Constant::getIntegerValue(IntTy64, APInt(64, ProfileVersion)), VarName); + IRLevelVersionVariable->setVisibility(GlobalValue::DefaultVisibility); + Triple TT(M.getTargetTriple()); + if (TT.supportsCOMDAT()) { + IRLevelVersionVariable->setLinkage(GlobalValue::ExternalLinkage); + IRLevelVersionVariable->setComdat(M.getOrInsertComdat(VarName)); + } +} + // Create the variable for the profile file name. void createProfileFileNameVar(Module &M, StringRef InstrProfileOutput) { if (InstrProfileOutput.empty()) |
