[llvm-dev] Question about Decoding Conflict of DisassemblerTables from TableGen

jingu kang via llvm-dev llvm-dev at lists.llvm.org
Sat Dec 5 09:30:53 PST 2015

Great!!! It is working. Thank you very much Hal!

JinGu Kang

2015-12-05 13:38 GMT+00:00 Hal Finkel <hfinkel at anl.gov>:
> Hi JinGu,
> You can use different DecoderNamespace values in order to separate out different conflict-free groups. For a simple example, look at how QPX disassembly is handled in the PowerPC backend.
>  -Hal
> ----- Original Message -----
>> From: "jingu kang via llvm-dev" <llvm-dev at lists.llvm.org>
>> To: llvm-dev at lists.llvm.org
>> Sent: Saturday, December 5, 2015 5:37:00 AM
>> Subject: [llvm-dev] Question about Decoding Conflict of DisassemblerTables    from TableGen
>> Hi All,
>> I have faced decoding conflict of DisassemblerTables from TableGen. I
>> have instructions with same encoding and different mnemonic among
>> different architecture versions. I have used Predicates and
>> AssemblerPredicates to distinguish them on Codegen and Assembler but
>> it does not work on Disassembler. When I look at
>> TableGen/FixedLenDecoderEmitter.cpp, once there is decoding conflict,
>> tablegen does not generate table entry. I think it means even though
>> there are predicates, it does not affect to the table entry. Could
>> someone let me know how to avoid decoding conflict in this situation?
>> If I missed something, please let me know.
>> Thanks,
>> JinGu Kang
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> --
> Hal Finkel
> Assistant Computational Scientist
> Leadership Computing Facility
> Argonne National Laboratory

More information about the llvm-dev mailing list