Generate the path to the bin directory of LLVM.
Construct a new llvm-filecheck invocation. This assumes that llvm-filecheck is available
at $LLVM_FILECHECK.
Construct a new llvm-objdump invocation. This assumes that llvm-objdump is available
at $LLVM_BIN_DIR/llvm-objdump.
Construct a new llvm-profdata invocation. This assumes that llvm-profdata is available
at $LLVM_BIN_DIR/llvm-profdata.
Construct a new llvm-readobj invocation with the GNU output style.
This assumes that llvm-readobj is available at $LLVM_BIN_DIR/llvm-readobj.