xed fails to build when using --no-avx

[roeeshoshani]

i am trying to build xed using the following command:

../xed/mfile.py --no-avx

and i get the following error:

[ERROR] Look-ahead error - only some are nonterminal at next bit position
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 6395, in <module>
    main()
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 6375, in main
    gen_everything_else(agi)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 5509, in gen_everything_else
    gi.graph = build_graph(agi.common,
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2858, in build_graph
    build_sub_graph(common,graph, bitpos, skipped_bits)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2671, in build_sub_graph
    build_sub_graph(common, child, bitpos, 0)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2671, in build_sub_graph
    build_sub_graph(common, child, bitpos, 0)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2671, in build_sub_graph
    build_sub_graph(common, child, bitpos, 0)
  [Previous line repeated 2 more times]
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2728, in build_sub_graph
    die("Look-ahead error - only some are nonterminal " +
  File "/home/sho/Documents/trash/xed_test/xed/pysrc/genutil.py", line 81, in die

[matt-undo]

I experienced the same error, except I am using --no-srf build arg.

[marjevan]

I experienced the same error, except I am using --no-srf build arg.

Report migrated to #343

[marjevan]

i am trying to build xed using the following command:

../xed/mfile.py --no-avx
and i get the following error:

[ERROR] Look-ahead error - only some are nonterminal at next bit position
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 6395, in <module>
    main()
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 6375, in main
    gen_everything_else(agi)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 5509, in gen_everything_else
    gi.graph = build_graph(agi.common,
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2858, in build_graph
    build_sub_graph(common,graph, bitpos, skipped_bits)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2671, in build_sub_graph
    build_sub_graph(common, child, bitpos, 0)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2671, in build_sub_graph
    build_sub_graph(common, child, bitpos, 0)
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2671, in build_sub_graph
    build_sub_graph(common, child, bitpos, 0)
  [Previous line repeated 2 more times]
  File "/home/sho/Documents/trash/xed_test/shit/../xed/pysrc/generator.py", line 2728, in build_sub_graph
    die("Look-ahead error - only some are nonterminal " +
  File "/home/sho/Documents/trash/xed_test/xed/pysrc/genutil.py", line 81, in die

Thanks for reporting this issue.

There are some legacy complexities and restructuring needed to properly address this.
Could you share the priority or urgency of this bug from your perspective? This will help us prioritize the fix accordingly.

[kkhalail]

Hi @roeeshoshani, Could you share the priority or urgency of this bug?

Can you also tell us more about the use-case of this build (excluding AVX)?

[roeeshoshani]

The reason I was building without avx was because I wanted a smaller binary and I didn't need avx support. This is not urgent, it is just for a side project.

[kkhalail]

Hi @roeeshoshani, I wanted to inform you that builds disabling AVX will no longer be supported by XED.
You can however, with the next release, use the --no-avx512 build which excludes a pretty big chunk of XED.