[PATCH] D47114: [FileCheck] Implement -v and -vv for tracing matches

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

jdenny updated this revision to Diff 154302.
jdenny added a comment.

This updates -v to make more sense in the case of the new CHECK-EMPTY directive.  Without this update, -v reported the match for CHECK-EMPTY as occurring at the preceding newline.  That's confusing, especially if the preceding line was also empty because it then seemed like the expected empty line was the preceding line instead.  Because CHECK-EMPTY is conceptually a CHECK-NEXT for an empty line, -v now reports the match as occurring after the preceding newline, just as it does for CHECK-NEXT.  That is, as for CHECK-NEXT, the match range starts at the empty line, and there is a constraint that there is one preceding newline in the search range.


https://reviews.llvm.org/D47114

Files:
  docs/CommandGuide/FileCheck.rst
  test/FileCheck/check-empty.txt
  test/FileCheck/check-label-dag.txt
  test/FileCheck/check-multiple-prefixes-nomatch-2.txt
  test/FileCheck/check-multiple-prefixes-nomatch.txt
  test/FileCheck/check-not-diaginfo.txt
  test/FileCheck/defines.txt
  test/FileCheck/implicit-check-not.txt
  test/FileCheck/match-full-lines.txt
  test/FileCheck/verbose.txt
  utils/FileCheck/FileCheck.cpp

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