[all-commits] [llvm/llvm-project] a9fdfe: Fix LLVM tool --version build mode printing for MSVC

[Reid Kleckner via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a9fdfe63ce023b5aff0fb160375dd28eabf525df
      https://github.com/llvm/llvm-project/commit/a9fdfe63ce023b5aff0fb160375dd28eabf525df
  Author: Reid Kleckner <rnk at google.com>
  Date:   2019-12-23 (Mon, 23 Dec 2019)

  Changed paths:
    M llvm/lib/Support/CommandLine.cpp

  Log Message:
  -----------
  Fix LLVM tool --version build mode printing for MSVC

LLVM tools such as llc print "DEBUG build" or "Optimized build" when
passed --version. Before this change, this was implemented by checking
for the __OPTIMIZE__ GCC macro. MSVC does not define this macro. For
MSVC, control this behavior with _DEBUG instead. It doesn't have
precisely the same meaning, but in most configurations, it will do the
right thing.

Fixes PR17752

Reviewed by: MaskRay

Differential Revision: https://reviews.llvm.org/D71817