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Corrected usage synopsis.
Added information regarding additional LLVM passes used, input defaults, and output defaults. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8802 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -20,7 +20,7 @@ extract
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SYNOPSIS
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</h3>
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extract [options] <filename> [filename ...]
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extract [options] [filename]
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<h3>
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DESCRIPTION
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</h3>
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@ -28,6 +28,14 @@ DESCRIPTION
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The extract command takes the name of a function and extracts it from the
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specified LLVM bytecode file. It is primarily used as a debugging tool to
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reduce test cases from larger programs that are triggering a bug.
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<p>
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In addition to extracting the bytecode of the specified function, extract will
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also remove unreachable global variables, prototypes, and unused types.
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<p>
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The extract command will read its input from standard input if filename is
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omitted or if filename is -. The output is always written to standard output.
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<h3>
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OPTIONS
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