[all-commits] [llvm/llvm-project] a9a378: [ObjC] Override TailCallKind when lowering objc in...

[Visoiu Mistrih Francis via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a9a3781df81a8a630e5d233efbc8b15b24ddd1dd
      https://github.com/llvm/llvm-project/commit/a9a3781df81a8a630e5d233efbc8b15b24ddd1dd
  Author: Francis Visoiu Mistrih <francisvm at yahoo.com>
  Date:   2019-11-11 (Mon, 11 Nov 2019)

  Changed paths:
    M llvm/lib/CodeGen/PreISelIntrinsicLowering.cpp
    M llvm/test/Transforms/PreISelIntrinsicLowering/objc-arc.ll

  Log Message:
  -----------
  [ObjC] Override TailCallKind when lowering objc intrinsics

The tail-call-kind-ness is known by the ObjCARC analysis and can be
enforced while lowering the intrinsics to calls.

This allows us to get the requested tail calls at -O0 without trying to
preserve the attributes throughout passes that change code even at -O0
,like the Always Inliner, where the ObjCOpt pass doesn't run.

Differential Revision: https://reviews.llvm.org/D69980