tree 40e74fe4e4352aa823f6ab2bc25097ffffb890a3
parent e03f62af1e2cf398e72ecb13da383009f3c1fbf8
author Louis Dionne <ldionne.2@gmail.com> 1617982888 -0400
committer Copybara-Service <copybara-worker@google.com> 1618252258 -0700

[libc++] Divorce the std Lit feature from the -std=XXX compiler flag

After this patch, we can use `--param std=c++20` even if the compiler only
supports -std=c++2a. The test suite will handle that for us. The only Lit
feature that isn't fully baked will always be the "in development" one,
since we don't know exactly what year the standard will be ratified in.

This is another take on https://reviews.llvm.org/D99789.

Differential Revision: https://reviews.llvm.org/D100210

GitOrigin-RevId: 8508b1c133f6dea558fd62f73cf333bdec809026