[llvm-branch-commits] [Clang] Make NewPM switch respect shouldDefaultToNewPM (PR #214571)

[Alexis Engelke via llvm-branch-commits]

aengelke wrote:

Duplicating from #214572: I'd still prefer to have some (non-virtual) function in TargetMachine that just "compiles this module", which internally respects shouldDefaultToNewPM and a new cl::opt that can be used to override the decision. I think the driver also supports setting LLVM command line options (e.g. -mllvm -enable-codegen-newpm).

I don't think front-ends should meddle this deep with codegen internals and this seems to be a good opportunity to add a proper abstraction for simply compiling a module into an object.

https://github.com/llvm/llvm-project/pull/214571