[all-commits] [llvm/llvm-project] f03a3c: [ms] [llvm-ml] Warn on command-line redefinition

[Eric Astor via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f03a3caac5e5ac9a440bea1b8ad1485c714f156b
      https://github.com/llvm/llvm-project/commit/f03a3caac5e5ac9a440bea1b8ad1485c714f156b
  Author: Eric Astor <epastor at google.com>
  Date:   2021-06-10 (Thu, 10 Jun 2021)

  Changed paths:
    M llvm/lib/MC/MCParser/MasmParser.cpp
    M llvm/test/tools/llvm-ml/command_line_defines.asm
    A llvm/test/tools/llvm-ml/command_line_defines_errors.asm

  Log Message:
  -----------
  [ms] [llvm-ml] Warn on command-line redefinition

If a macro is defined on the command line and then overridden in the source code, this is likely to be an error in the user's build system. We should warn on this.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D104008