These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.

Seeing how we can't generate any debug intrinsics any more: delete a
variety of codepaths where they're handled. For the most part these are
plain deletions, in others I've tweaked comments to remain coherent, or
added a type to (what was) type-generic-lambdas.

This isn't all the DbgInfoIntrinsic call sites but it's most of the
simple scenarios.

Co-authored-by: Nikita Popov <github@npopov.com>

- Do not call pass initialization from pass constructors.
- Instead, pass initialization should happen in the `initializeAnalysis`
function.
- https://github.com/llvm/llvm-project/issues/111767

The last uses of these functions were removed in:

  commit 58bc98cd3abd72226cdbaa05bd92af9598d491db
  Author: Arthur Eubanks <aeubanks@google.com>
  Date:   Fri Jul 12 10:02:50 2024 -0700

This pass isn't used anywhere upstream and thus doesn't have any test
coverage. For these reasons, remove it.

Intrinsics have historically been excluded from the call graph with an
exception of 3 special ones added at some point. This meant that passes
depending on the call graph needed to handle intrinsics explicitly as
the underlying assumption, namely that intrinsics can't call or modify
things, doesn't hold. We are slowly moving away from special handling of
intrinsics, or at least towards explicitly checking what intrinsics we
want to handle differently.

This patch:
 - Includes most intrinsics in the call graph. Debug intrinsics are
   still excluded.
 - Removes the special handling of intrinsics in the GlobalsAA pass.
 - Removes the `IntrinsicInst::isLeaf` method.

Properly
Fixes: https://github.com/llvm/llvm-project/issues/52706

See also:
https://discourse.llvm.org/t/intrinsics-are-not-special-stop-pretending-i-mean-it/67545

Differential Revision: https://reviews.llvm.org/D14119

And remove the legacy opt-specific pass.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D135487

The call graph has nothing to with function CFGs.

Fixes a crash in a future change that exposes this bug.

Number of lines output by preprocessor:
before: 1065940348
after:  1065307662

Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D120659