[all-commits] [llvm/llvm-project] b57540: Verifier: accept enums as scopes

[Yuanfang Chen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b575405cc3a53112c487fd2dab2d3ed75c3944ab
      https://github.com/llvm/llvm-project/commit/b575405cc3a53112c487fd2dab2d3ed75c3944ab
  Author: Augie Fackler <augie at google.com>
  Date:   2021-12-10 (Fri, 10 Dec 2021)

  Changed paths:
    M llvm/lib/IR/Verifier.cpp
    A llvm/test/DebugInfo/dbg-rust-valid-enum-as-scope.ll
    R llvm/test/Verifier/dbg-invalid-enum-as-scope.ll

  Log Message:
  -----------
  Verifier: accept enums as scopes

Rust allows enums to be scopes, as shown by the previous change. Sadly,
D111770 disallowed enums-as-scopes in the LLVM Verifier, which means
that LLVM HEAD stopped working for Rust compiles.  As a result, we back
out the verifier part of D111770 with a modification to the testcase so
we don't break this in the future.

The testcase is now actual IR from rustc at commit 8f8092cc3, which is
the nightly as of 2021-09-28. I would expect rustc 1.57 to produce
similar or identical IR if someone wants to reproduce this IR in the
future with minimal changes. A recipe for reproducing the IR using rustc
is included in the test file.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D115353