1. [clang][cli] Don't always emit -f[no-]legacy-pass-manager (details)
Commit 10f40576f7b482dc55b9a0ba780c294c4e45817c by Jan Svoboda
[clang][cli] Don't always emit -f[no-]legacy-pass-manager

We don't need to always generate `-f[no-]experimental-new-pass-manager`.

This patch does not change the behavior of any other command line flag. (For example `-triple` is still being always generated.)

Reviewed By: dexonsmith, Bigcheese

Differential Revision:
The file was modifiedllvm/include/llvm/Option/
The file was modifiedclang/unittests/Frontend/CompilerInvocationTest.cpp