[PATCH] D66574: [lit] Make internal diff work in pipelines

[Joel E. Denny via Phabricator via llvm-commits]

jdenny updated this revision to Diff 225334.
jdenny added a comment.

Rebased onto D68839 <https://reviews.llvm.org/D68839> (recently re-landed).  As a result, the `diff.py` created here has to import `lit.util` for `to_string`.  The only way I found to make that possible was to set `PYTHONPATH` in `TestRunner.py` when calling `diff.py`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66574/new/

https://reviews.llvm.org/D66574

Files:
  llvm/utils/lit/lit/TestRunner.py
  llvm/utils/lit/lit/builtin_commands/diff.py
  llvm/utils/lit/tests/Inputs/shtest-shell/diff-error-0.txt
  llvm/utils/lit/tests/Inputs/shtest-shell/diff-pipes.txt
  llvm/utils/lit/tests/Inputs/shtest-shell/diff-unified-error-0.txt
  llvm/utils/lit/tests/Inputs/shtest-shell/diff-unified-error-1.txt
  llvm/utils/lit/tests/Inputs/shtest-shell/diff-unified.txt
  llvm/utils/lit/tests/max-failures.py
  llvm/utils/lit/tests/shtest-shell.py

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