**LLVM_USE_OPROFILE**:BOOL
Enable building OProfile JIT support. Defaults to OFF.
+**LLVM_PROFDATA_FILE**:PATH
+ Path to a profdata file to pass into clang's -fprofile-instr-use flag. This
+ can only be specified if you're building with clang.
+
**LLVM_USE_INTEL_JITEVENTS**:BOOL
Enable building support for Intel JIT Events API. Defaults to OFF.