1 2 =pod 3 4 =head1 NAME 5 6 tblgen - Target Description To C++ Code Generator 7 8 =head1 SYNOPSIS 9 10 B<tblgen> [I<options>] [I<filename>] 11 12 =head1 DESCRIPTION 13 14 B<tblgen> translates from target description (.td) files into C++ code that can 15 be included in the definition of an LLVM target library. Most users of LLVM will 16 not need to use this program. It is only for assisting with writing an LLVM 17 target backend. 18 19 The input and output of B<tblgen> is beyond the scope of this short 20 introduction. Please see the I<CodeGeneration> page in the LLVM documentation. 21 22 The F<filename> argument specifies the name of a Target Description (.td) file 23 to read as input. 24 25 =head1 OPTIONS 26 27 =over 28 29 =item B<-help> 30 31 Print a summary of command line options. 32 33 =item B<-o> F<filename> 34 35 Specify the output file name. If F<filename> is C<->, then B<tblgen> 36 sends its output to standard output. 37 38 =item B<-I> F<directory> 39 40 Specify where to find other target description files for inclusion. The 41 F<directory> value should be a full or partial path to a directory that contains 42 target description files. 43 44 =item B<-asmwriternum> F<N> 45 46 Make -gen-asm-writer emit assembly writer number F<N>. 47 48 =item B<-class> F<class Name> 49 50 Print the enumeration list for this class. 51 52 =item B<-print-records> 53 54 Print all records to standard output (default). 55 56 =item B<-print-enums> 57 58 Print enumeration values for a class 59 60 =item B<-gen-emitter> 61 62 Generate machine code emitter. 63 64 =item B<-gen-register-enums> 65 66 Generate the enumeration values for all registers. 67 68 =item B<-gen-register-desc> 69 70 Generate a register info description for each register. 71 72 =item B<-gen-register-desc-header> 73 74 Generate a register info description header for each register. 75 76 =item B<-gen-instr-enums> 77 78 Generate enumeration values for instructions. 79 80 =item B<-gen-instr-desc> 81 82 Generate instruction descriptions. 83 84 =item B<-gen-asm-writer> 85 86 Generate the assembly writer. 87 88 =item B<-gen-dag-isel> 89 90 Generate a DAG (Directed Acycle Graph) instruction selector. 91 92 =item B<-gen-subtarget> 93 94 Generate subtarget enumerations. 95 96 =item B<-gen-intrinsic> 97 98 Generate intrinsic information. 99 100 =item B<-version> 101 102 Show the version number of this program. 103 104 =back 105 106 =head1 EXIT STATUS 107 108 If B<tblgen> succeeds, it will exit with 0. Otherwise, if an error 109 occurs, it will exit with a non-zero value. 110 111 =head1 AUTHORS 112 113 Maintained by The LLVM Team (L<http://llvm.org/>). 114 115 =cut 116
