Reapply "[DebugInfo][RemoveDIs] Turn on non-instrinsic debug-info by default"
This reapplies commit bdde5f9 by undoing the revert bc66e0c.
The previous reapplication 5c9f768 was reverted due to a crash
(reproducer in comments for 5c9f768) which was fixed in #81595.
As noted in the original commit, this commit may break downstream tests.
If this commit is breaking your downstream tests, please see comment 12 in
[0], which documents the kind of variation in tests we'd expect to see from
this change and what to do about it.
[0] https://discourse.llvm.org/t/rfc-instruction-api-changes-needed-to-eliminate-debug-intrinsics-from-ir/68939
llvm-project
d759618d - Reapply "[DebugInfo][RemoveDIs] Turn on non-instrinsic debug-info by default"