[all-commits] [llvm/llvm-project] eae3b2: [clang][cli] Fix round-trip of OPT_plugin_arg

[john-brawn-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: eae3b2a715d7fd1aea0ce1c78ac7a04957b72728
      https://github.com/llvm/llvm-project/commit/eae3b2a715d7fd1aea0ce1c78ac7a04957b72728
  Author: John Brawn <john.brawn at arm.com>
  Date:   2021-03-30 (Tue, 30 Mar 2021)

  Changed paths:
    M clang/lib/Frontend/CompilerInvocation.cpp

  Log Message:
  -----------
  [clang][cli] Fix round-trip of OPT_plugin_arg

The test Frontend/plugin-delayed-template.cpp is failing when asserts
are enabled because it hits an assertion in denormalizeStringImpl when
trying to round-trip OPT_plugin_arg. Fix this by adjusting how the
option is handled, as the first part is joined to -plugin-arg and the
second is separate.

Differential Revision: https://reviews.llvm.org/D99606