[all-commits] [llvm/llvm-project] 6541d3: [test] Add lit helper for windows paths

[Keith Smiley via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6541d3e979c1c53adca758d35dfe4e6f4d4e597c
      https://github.com/llvm/llvm-project/commit/6541d3e979c1c53adca758d35dfe4e6f4d4e597c
  Author: Keith Smiley <keithbsmiley at gmail.com>
  Date:   2022-03-14 (Mon, 14 Mar 2022)

  Changed paths:
    M llvm/docs/CommandGuide/lit.rst
    M llvm/docs/TestingGuide.rst
    M llvm/utils/lit/lit/TestRunner.py

  Log Message:
  -----------
  [test] Add lit helper for windows paths

This adds 2 new lit helpers `%{fs-src-root}` and `%{fs-sep}`, these
allow writing tests that correctly handle slashes on Windows. In the
case of tests like clang/test/CodeGen/debug-prefix-map.c, these are
unable to correctly test behavior on both platforms, unless they fork
and add OS requirements, because the relevant logic hits host specific
codepaths like checking if paths are absolute.

Differential Revision: https://reviews.llvm.org/D111457