[all-commits] [llvm/llvm-project] b34632: Revert "Frontend: Sink named pipe logic from Compi...

[Duncan P. N. Exon Smith via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b34632201987eed369bb7ef4646f341b901c95b8
      https://github.com/llvm/llvm-project/commit/b34632201987eed369bb7ef4646f341b901c95b8
  Author: Duncan P. N. Exon Smith <dexonsmith at apple.com>
  Date:   2020-12-02 (Wed, 02 Dec 2020)

  Changed paths:
    M clang/lib/Basic/FileManager.cpp
    M clang/lib/Frontend/CompilerInstance.cpp

  Log Message:
  -----------
  Revert "Frontend: Sink named pipe logic from CompilerInstance down to FileManager"

This reverts commit 3b18a594c7717a328c33b9c1eba675e9f4bd367c, since
apparently this doesn't work everywhere. E.g.,
clang-x86_64-debian-fast/3889
(http://lab.llvm.org:8011/#/builders/109/builds/3889) gives me:
```
+ : 'RUN: at line 8'
+ /b/1/clang-x86_64-debian-fast/llvm.obj/bin/clang -x c /dev/fd/0 -E
+ cat /b/1/clang-x86_64-debian-fast/llvm.src/clang/test/Misc/dev-fd-fs.c
fatal error: file '/dev/fd/0' modified since it was first processed
1 error generated.
```