Stream: git-wasmtime

Topic: wasmtime / issue #6844 Add support for vector in DataValu...

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 06:54):

gurry commented on issue #6844:

DataValueExt::int() doesn't currently seem to have any tests. Please let me know if I should add any tests for this PR or for DataValueExt::int() in general.

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 06:58):

gurry edited a comment on issue #6844:

DataValueExt::int() doesn't currently seem to have any tests. Please let me know if I should add any tests for this PR or for DataValueExt::int() in general.

Wonder if it would be a good idea to create a test from the .clif in #6827

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 07:32):

gurry commented on issue #6844:

Just saw that the test already exists:

https://github.com/bytecodealliance/wasmtime/blob/30d086f78e1e53cc52f3918aba3edf397d98b6d7/cranelift/filetests/filetests/runtests/simd-ineg.clif#L30-L35

So just enabled it for the interpreter.

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 07:32):

gurry edited a comment on issue #6844:

Just saw that the test already exists:

https://github.com/bytecodealliance/wasmtime/blob/30d086f78e1e53cc52f3918aba3edf397d98b6d7/cranelift/filetests/filetests/runtests/simd-ineg.clif#L30-L35

So I've enabled it for the interpreter.

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 11:17):

gurry commented on issue #6844:

Thanks @afonso360

In order to test with an 8 byte vector input to DataValueExt::int() I tried adding the following test to simd-ineg.clif but it crashed with the below trace:

RUST_BACKTRACE=1 cargo test --test filetests
    Finished test [unoptimized + debuginfo] target(s) in 0.47s
     Running tests/filetests.rs ([...]\wasmtime\target\debug\deps\filetests-d08e13383c5d8a1e.exe)
slow: 0.026 filetests\filetests\wasm\aarch64-relaxed-simd.wat
thread 'worker #2' panicked at 'called `Option::unwrap()` on a `None` value', cranelift\codegen\src\isa\x64\lower\isle.rs:550:21
stack backtrace:
   0: std::panicking::begin_panic_handler
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library\std\src\panicking.rs:593
   1: core::panicking::panic_fmt
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library\core\src\panicking.rs:67
   2: core::panicking::panic
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library\core\src\panicking.rs:117
   3: enum2$<core::option::Option<cranelift_codegen::isa::x64::inst::args::Gpr> >::unwrap<cranelift_codegen::isa::x64::inst::args::Gpr>
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26\library\core\src\option.rs:935
   4: cranelift_codegen::isa::x64::lower::isle::impl$0::gpr_new
             at .\codegen\src\isa\x64\lower\isle.rs:550
   5: cranelift_codegen::isa::x64::lower::isle::generated_code::constructor_put_in_gpr<cranelift_codegen::machinst::isle::IsleContext<enum2$<cranelift_codegen::isa::x64::lower::isle::generated_code::MInst>,cranelift_codegen::isa::x64::X64Backend> >
             at C:\Users\gurinder.singh\Projects\Personal\wasmtime_dev\wasmtime\target\debug\build\cranelift-codegen-3e0280ce8237aaeb\out\isle_x64.rs:2610
   6: cranelift_codegen::isa::x64::lower::isle::generated_code::constructor_lower<cranelift_codegen::machinst::isle::IsleContext<enum2$<cranelift_codegen::isa::x64::lower::isle::generated_code::MInst>,cranelift_codegen::isa::x64::X64Backend> >
             at C:\Users\gurinder.singh\Projects\Personal\wasmtime_dev\wasmtime\target\debug\build\cranelift-codegen-3e0280ce8237aaeb\out\isle_x64.rs:16695
   7: cranelift_codegen::isa::x64::lower::isle::lower
             at .\codegen\src\isa\x64\lower\isle.rs:64
   8: cranelift_codegen::isa::x64::lower::impl$1::lower
             at .\codegen\src\isa\x64\lower.rs:325
   9: cranelift_codegen::machinst::lower::Lower<enum2$<cranelift_codegen::isa::x64::lower::isle::generated_code::MInst> >::lower_clif_block<enum2$<cranelift_codegen::isa::x64::lower::isle::generated_code::MInst>,cranelift_codegen::isa::x64::X64Backend>             at .\codegen\src\machinst\lower.rs:743
  10: cranelift_codegen::machinst::lower::Lower<enum2$<cranelift_codegen::isa::x64::lower::isle::generated_code::MInst> >::lower<enum2$<cranelift_codegen::isa::x64::lower::isle::generated_code::MInst>,cranelift_codegen::isa::x64::X64Backend>
             at .\codegen\src\machinst\lower.rs:1067
  11: cranelift_codegen::machinst::compile::compile<cranelift_codegen::isa::x64::X64Backend>
             at .\codegen\src\machinst\compile.rs:40
  12: cranelift_codegen::isa::x64::X64Backend::compile_vcode
             at .\codegen\src\isa\x64\mod.rs:61
  13: cranelift_codegen::isa::x64::impl$1::compile_function
             at .\codegen\src\isa\x64\mod.rs:73
  14: cranelift_codegen::context::Context::compile_stencil
             at .\codegen\src\context.rs:146
  15: cranelift_codegen::context::Context::compile
             at .\codegen\src\context.rs:206
  16: cranelift_jit::backend::impl$2::define_function_with_control_plane
             at .\jit\src\backend.rs:689
  17: cranelift_filetests::function_runner::TestFileCompiler::define_function
             at .\filetests\src\function_runner.rs:248
  18: cranelift_filetests::function_runner::TestFileCompiler::add_functions
             at .\filetests\src\function_runner.rs:148
  19: cranelift_filetests::function_runner::TestFileCompiler::add_testfile
             at .\filetests\src\function_runner.rs:165
  20: cranelift_filetests::test_run::compile_testfile
             at .\filetests\src\test_run.rs:127
  21: cranelift_filetests::test_run::impl$0::run_target
             at .\filetests\src\test_run.rs:197
  22: cranelift_filetests::runone::run
             at .\filetests\src\runone.rs:102
  23: cranelift_filetests::concurrent::worker_thread::closure$0::closure$0
             at .\filetests\src\concurrent.rs:152
  24: std::panicking::try::do_call<cranelift_filetests::concurrent::worker_thread::closure$0::closure_env$0,enum2$<core::result::Result<core::time::Duration,anyhow::Error> > >
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26\library\std\src\panicking.rs:500
  25: std::panicking::try::do_catch<cranelift_filetests::concurrent::worker_thread::closure$0::closure_env$0,enum2$<core::result::Result<core::time::Duration,anyhow::Error> > >
  26: std::panicking::try<enum2$<core::result::Result<core::time::Duration,anyhow::Error> >,cranelift_filetests::concurrent::worker_thread::closure$0::closure_env$0>
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26\library\std\src\panicking.rs:464
  27: std::panic::catch_unwind<cranelift_filetests::concurrent::worker_thread::closure$0::closure_env$0,enum2$<core::result::Result<core::time::Duration,anyhow::Error> > >
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26\library\std\src\panic.rs:142
  28: cranelift_filetests::concurrent::worker_thread::closure$0
             at .\filetests\src\concurrent.rs:152
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
FAIL filetests\filetests\runtests\simd-ineg.clif: panicked in worker #2: called `Option::unwrap()` on a `None` value
1355 tests
Error: 1 failure
error: test failed, to rerun pass `--test filetests`

While the interpreter worked fine, it was the compiler that crashed. Is this expected?

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 11:24):

afonso360 commented on issue #6844:

While the interpreter worked fine, it was the compiler that crashed. Is this expected?

Well, sort of. Ideally we would be able to compile all clif code, but 64 bit SIMD support is very incomplete both in the backends and in the interpreter itself. The only architectures that support it are AArch64 and RISC-V.

I think X86_64 has never supported it, so yeah I would expect it to crash there.

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 11:25):

afonso360 edited a comment on issue #6844:

While the interpreter worked fine, it was the compiler that crashed. Is this expected?

Well, sort of. Ideally we would be able to compile all clif code, but 64 bit SIMD support is very incomplete both in the backends and in the interpreter itself. The only architectures that support it are AArch64 and RISC-V (And neither of those fully support it!).

I think X86_64 has never supported it, so yeah I would expect it to crash there.

view this post on Zulip Wasmtime GitHub notifications bot (Aug 14 2023 at 11:28):

gurry commented on issue #6844:

Okay, makes sense. Thanks :+1:

Last updated: Oct 23 2024 at 20:03 UTC