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66 lines
1.9 KiB
Plaintext
66 lines
1.9 KiB
Plaintext
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=pod
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=head1 NAME
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FileCheck - Flexible pattern matching file verifier
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=head1 SYNOPSIS
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B<FileCheck> I<match-filename> [I<--check-prefix=XXX>] [I<--strict-whitespace>]
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=head1 DESCRIPTION
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B<FileCheck> reads two files (one from standard input, and one specified on the
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command line) and uses one to verify the other. This behavior is particularly
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useful for the testsuite, which wants to verify that the output of some tool
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(e.g. llc) contains the expected information (for example, a movsd from esp or
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whatever is interesting). This is similar to using grep, but it is optimized
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for matching multiple different inputs in one file in a specific order.
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The I<match-filename> file specifies the file that contains the patterns to
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match. The file to verify is always read from standard input.
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The input and output of B<tblgen> is beyond the scope of this short
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introduction. Please see the I<TestingGuide> page in the LLVM documentation.
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=head1 OPTIONS
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=over
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=item B<--help>
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Print a summary of command line options.
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=item B<--check-prefix> I<prefix>
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FileCheck searches the contents of I<match-filename> for patterns to match. By
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default, these patterns are prefixed with "CHECK:". If you'd like to use a
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different prefix (e.g. because the same input file is checking multiple
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different tool or options), the B<--check-prefix> argument allows you to specify
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a specific prefix to match.
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=item B<--strict-whitespace>
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By default, FileCheck canonicalizes input horizontal whitespace (spaces and
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tabs) which causes it to ignore these differences (a space will match a tab).
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The --strict-whitespace argument disables this behavior.
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=item B<-version>
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Show the version number of this program.
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=back
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=head1 EXIT STATUS
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If B<FileCheck> verifies that the file matches the expected contents, it exits
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with 0. Otherwise, if not, or if an error occurs, it will exit with a non-zero
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value.
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=head1 AUTHORS
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Maintained by The LLVM Team (L<http://llvm.org>).
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=cut
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