C6000-CGT: Compile C++ template too slow,but ti-cgt-armllvm works well

I write some C++ code using a lot of C++ template,use C6000-CGT or C7000-CGT compile too slow,takes 90s compiling one cpp file.

But when use ti-cgt-armllvm(tiarmclang),it works well,takes 3s for the same cpp file.

How can I slove this problem?