[PATCH] D80391: [Driver] Don't make -gsplit-dwarf imply -g2

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

In D80391#2496583 <https://reviews.llvm.org/D80391#2496583>, @thakis wrote:

> Do we emit a warning if we see `-gsplit-dwarf` alone? Should we?

`{gcc,clang} -gcolumn-info -c a.c` does not warn about unused -gcolumn-info. Not having a warning makes such toggle flags more independent. Users can add them as default without checking about -g levels.

> This apparently bit us (chromium) in thinlto configs. Could this here be more explicit that -gsplit-dwarf now needs an explicit -g2 in cflags, and if using thinlto, in ldflags as well?

(I CCed you in a message half a year ago. My apologies, I probably should notified you again)


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D80391/new/

https://reviews.llvm.org/D80391