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tblgen - Target Description To C++ Code Generator


tblgen [options] [filename]


tblgen translates from target description (.td) files into C++ code that can be included
in the definition of an LLVM target library. Most users of LLVM will not need to use this
program. It is only for assisting with writing an LLVM target backend.

The input and output of tblgen is beyond the scope of this short introduction; please see
the introduction to TableGen.

The filename argument specifies the name of a Target Description (.td) file to read as


-help Print a summary of command line options.

-o filename
Specify the output file name. If filename is -, then tblgen sends its output to
standard output.

-I directory
Specify where to find other target description files for inclusion. The directory
value should be a full or partial path to a directory that contains target
description files.

-asmparsernum N
Make -gen-asm-parser emit assembly writer number N.

-asmwriternum N
Make -gen-asm-writer emit assembly writer number N.

-class className
Print the enumeration list for this class.

Print all records to standard output (default).

Print enumeration values for a class.

Print expanded sets for testing DAG exprs.

Generate machine code emitter.

Generate registers and register classes info.

Generate instruction descriptions.

Generate the assembly writer.

Generate disassembler.

Generate pseudo instruction lowering.

Generate a DAG (Directed Acycle Graph) instruction selector.

Generate assembly instruction matcher.

Generate DFA Packetizer for VLIW targets.

Generate a "fast" instruction selector.

Generate subtarget enumerations.

Generate intrinsic information.

Generate target intrinsic information.

Generate enhanced disassembly info.

Show the version number of this program.


If tblgen succeeds, it will exit with 0. Otherwise, if an error occurs, it will exit with
a non-zero value.

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