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60ff004e05
This patch implements annotations for diagnostics reporting CHECK-NOT
failed matches. These diagnostics are enabled by -vv. As for
diagnostics reporting failed matches for other directives, these
annotations mark the search ranges using `X~~`. The difference here
is that failed matches for CHECK-NOT are successes not errors, so they
are green not red when colors are enabled.
For example:
```
$ FileCheck -dump-input=help
The following description was requested by -dump-input=help to
explain the input annotations printed by -dump-input=always and
-dump-input=fail:
- L: labels line number L of the input file
- T:L labels the only match result for a pattern of type T from line L of
the check file
- T:L'N labels the Nth match result for a pattern of type T from line L of
the check file
- ^~~ marks good match (reported if -v)
- !~~ marks bad match, such as:
- CHECK-NEXT on same line as previous match (error)
- CHECK-NOT found (error)
- CHECK-DAG overlapping match (discarded, reported if -vv)
- X~~ marks search range when no match is found, such as:
- CHECK-NEXT not found (error)
- CHECK-NOT not found (success, reported if -vv)
- CHECK-DAG not found after discarded matches (error)
- ? marks fuzzy match when no match is found
- colors success, error, fuzzy match, discarded match, unmatched input
If you are not seeing color above or in input dumps, try: -color
$ FileCheck -vv -dump-input=always check5 < input5 |& sed -n '/^<<<</,$p'
<<<<<<
1: abcdef
check:1 ^~~
not:2 X~~
2: ghijkl
not:2 ~~~
check:3 ^~~
3: mnopqr
not:4 X~~~~~
4: stuvwx
not:4 ~~~~~~
5:
eof:4 ^
>>>>>>
$ cat check5
CHECK: abc
CHECK-NOT: foobar
CHECK: jkl
CHECK-NOT: foobar
$ cat input5
abcdef
ghijkl
mnopqr
stuvwx
```
Reviewed By: george.karpenkov, probinson
Differential Revision: https://reviews.llvm.org/D53899
llvm-svn: 349424
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