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de9948f983
Prior to this change, there was no clean way of getting FileCheck to
check that a line is completely empty. The expected way of using
"CHECK: {{^$}}" does not work because the '^' matches the end of the
previous match (this behaviour may be desirable in certain instances).
For the same reason, "CHECK-NEXT: {{^$}}" will fail when the previous
match was at the end of the line, as the pattern will match there.
Using the recommended [[:space:]] to match an explicit new line could
also match a space, and thus is not always desired. Literal '\n'
matches also do not work. A workaround was suggested in the review, but
it is a little clunky.
This change adds a new directive that behaves the same as CHECK-NEXT,
except that it only matches against empty lines (nothing, not even
whitespace, is allowed). As with CHECK-NEXT, it will fail if more than
one newline occurs before the next blank line. Example usage:
; test.txt
foo
bar
; CHECK: foo
; CHECK-EMPTY:
; CHECK-NEXT: bar
Differential Revision: https://reviews.llvm.org/D28896
Reviewed by: probinson
llvm-svn: 335613
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| .. | ||
| check-a-b-has-b.txt | ||
| check-b-a-has-b.txt | ||
| check-dag-multi-prefix-2.txt | ||
| check-dag-multi-prefix.txt | ||
| check-dag-substring-prefix.txt | ||
| check-dag-xfails.txt | ||
| check-dag.txt | ||
| check-empty2.txt | ||
| check-empty-tag.txt | ||
| check-empty.txt | ||
| check-label-dag-capture.txt | ||
| check-label-dag.txt | ||
| check-label.txt | ||
| check-multi-prefix-label.txt | ||
| check-multiple-prefixes-mixed.txt | ||
| check-multiple-prefixes-nomatch-2.txt | ||
| check-multiple-prefixes-nomatch.txt | ||
| check-multiple-prefixes-substr.txt | ||
| check-not-diaginfo.txt | ||
| check-prefixes.txt | ||
| check-substring-multi-prefix-2.txt | ||
| check-substring-multi-prefix.txt | ||
| defines.txt | ||
| dos-style-eol.txt | ||
| first-character-match.txt | ||
| implicit-check-not.txt | ||
| line-count-2.txt | ||
| line-count.txt | ||
| match-full-lines.txt | ||
| multiple-missing-prefixes.txt | ||
| next-no-match.txt | ||
| no-multi-suffixes.txt | ||
| regex-brackets.txt | ||
| regex-no-match.txt | ||
| regex-scope.txt | ||
| same.txt | ||
| separate-multi-prefix.txt | ||
| simple-var-capture.txt | ||
| two-checks-for-same-match.txt | ||
| validate-check-prefix.txt | ||
| var-ref-same-line.txt | ||