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Build from source with autodiff fails on Mac OS #147985

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Build from source with autodiff fails on Mac OS#147985
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ZuseZ4
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C-bugCategory: This is a bug.F-autodiff`#![feature(autodiff)]`O-macosOperating system: macOST-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Description

@kevinyamauchi
kevinyamauchi
opened on Oct 22, 2025

Summary

I am trying to build rustc with autodiff support using the instructions in the guide. The build is currently failing on my M2 Macbook. I would appreciate any guidance on how to get the build to complete. Thanks!

Command used

git clone git@github.com:rust-lang/rust
cd rust
./configure --release-channel=nightly --enable-llvm-enzyme --enable-llvm-assertions --enable-option-checking --disable-docs --set llvm.download-ci-llvm=true

RUST_BACKTRACE=1 ./x build -v --stage 1 library | tee build_output.txt

I noticed that the suggested configuration was updated recently (#147888), so I also tried the configuration below and obtained the same result.

./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs

Expected behaviour

The build completes without errors.

Actual behaviour

The build fails with a RuntimeError.

    Finished `release` profile [optimized] target(s) in 3.45s
using sysroot /Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1
Dirty - /Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1-std
running: DYLD_LIBRARY_PATH="/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/lib" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "--target" "aarch64-apple-darwin" "--print=deployment-target" (failure_mode=Exit) (created at src/bootstrap/src/core/builder/mod.rs:1614:23, executed at src/bootstrap/src/core/build_steps/compile.rs:538:26)
rustc -Cllvm-args="..." with: Unknown command line argument '-mergefunc-use-aliases'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--riscv-no-aliases'?
rustc -Cllvm-args="..." with: Unknown command line argument '-preserve-alignment-assumptions-during-inlining=false'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--mips-align-constant-islands=false'?
rustc -Cllvm-args="..." with: Unknown command line argument '-import-cold-multiplier=0.1'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--ignore-xcoff-visibility=0.1'?
Command `DYLD_LIBRARY_PATH="/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/lib" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "--target" "aarch64-apple-darwin" "--print=deployment-target" (failure_mode=Exit)` failed with exit code 1
Created at: src/bootstrap/src/core/builder/mod.rs:1614:23
Executed at: src/bootstrap/src/core/build_steps/compile.rs:538:26

--- STDOUT vvv


Traceback (most recent call last):
  File "/Users/kyamauch/Documents/rust_source/rust/x.py", line 53, in <module>
    bootstrap.main()
  File "/Users/kyamauch/Documents/rust_source/rust/src/bootstrap/bootstrap.py", line 1410, in main
    bootstrap(args)
  File "/Users/kyamauch/Documents/rust_source/rust/src/bootstrap/bootstrap.py", line 1370, in bootstrap
    run(args, env=env, verbose=build.verbose, is_bootstrap=True)
  File "/Users/kyamauch/Documents/rust_source/rust/src/bootstrap/bootstrap.py", line 237, in run
    raise RuntimeError(err)
RuntimeError: failed to run: /Users/kyamauch/Documents/rust_source/rust/build/bootstrap/debug/bootstrap build -v --stage 1 library

Bootstrap configuration (bootstrap.toml)

# Use different pre-set defaults than the global defaults.
#
# See `src/bootstrap/defaults` for more information.
# Note that this has no default value (x.py uses the defaults in `bootstrap.example.toml`).
profile = 'dist'

[llvm]

# Currently, we only support this when building LLVM for the build triple.
#
# Note that many of the LLVM options are not currently supported for
# downloading. Currently only the "assertions" option can be toggled.
download-ci-llvm = true

# Indicates whether the LLVM assertions are enabled or not
# NOTE: When assertions are disabled, bugs in the integration between rustc and LLVM can lead to
# unsoundness (segfaults, etc.) in the rustc process itself, not just in the generated code.
assertions = true

# Whether to build Enzyme as AutoDiff backend.
enzyme = true

[gcc]

[build]

# Whether to build documentation by default. If false, rustdoc and
# friends will still be compiled but they will not be used to generate any
# documentation.
#
# You can still build documentation when this is disabled by explicitly passing paths,
# e.g. `x doc library`.
docs = false

# Arguments passed to the `./configure` script, used during distcheck. You
# probably won't fill this in but rather it's filled in by the `./configure`
# script. Useful for debugging.
configure-args = ['--release-channel=nightly', '--enable-llvm-enzyme', '--enable-llvm-assertions', '--enable-option-checking', '--disable-docs', '--set', 'llvm.download-ci-llvm=true']

[install]

[rust]

# The "channel" for the Rust build to produce. The stable/beta channels only
# allow using stable features, whereas the nightly and dev channels allow using
# nightly features.
#
# You can set the channel to "auto-detect" to load the channel name from `src/ci/channel`.
#
# If using tarball sources, default value is "auto-detect", otherwise, it's "dev".
channel = 'nightly'

[dist]

[target.aarch64-apple-darwin]

Operating system

Mac OS 15.4.1 (M2 Macbook Pro).

HEAD

b2ee1b3

Additional context

Build Log

build_output.txt

Activity

  1. kevinyamauchi
    added
    T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
    C-bugCategory: This is a bug.
    on Oct 22, 2025
  2. rustbot
    added
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
    on Oct 22, 2025
  3. jieyouxu
    added
    O-macosOperating system: macOS
    F-autodiff`#![feature(autodiff)]`
    and removed
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
    on Oct 22, 2025

  4. ZuseZ4 commented on Oct 23, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 23, 2025
    Member

    Thanks for investigating and trying the old command as well. To be sure, did you rm the whole build folder in between (or use different rust clones)? I made the experience that sometimes bootstrap doesn't properly delete or update old artifacts. If the error remains, can you also try the same build with llvm.enzyme set to false? Just as a smoke test to be sure it's the fault of autodiff, since at least building Enzyme (our autodiff backend) seems to work fine based on your logs.
    Unfortunately I won't have access to my own Mac for the next two weeks, so I can't reproduce it atm.

  5. kevinyamauchi commented on Oct 23, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 23, 2025
    Author

    Thanks for the reply, @ZuseZ4 !

    To be sure, did you rm the whole build folder in between (or use different rust clones)? I made the experience that sometimes bootstrap doesn't properly delete or update old artifacts.

    Yeah for each attempt, I deleted the whole rust folder and and cloned a fresh copy of the repo.

    If the error remains, can you also try the same build with llvm.enzyme set to false?

    Good suggestion! I tried building with llvm.enzyme set to false using the commands below. The build completed successfully (logs below) and the test suite passed (./X test). I also tested the build instructions in the guide on a machine with Ubuntu and an Intel processor and that worked (including the autodiff tests). I suppose that means the issue is indeed related to building on the Mac.

    git clone git@github.com:rust-lang/rust
cd rust
./configure --release-channel=nightly  --enable-llvm-assertions --enable-option-checking --disable-docs --set llvm.download-ci-llvm=true
RUST_BACKTRACE=1 ./x build -v --stage 1 library | tee build_output.txt

    lastest commit hash: 11d2046fe9962720558cb15f72541f7fd170dec9

    bootstrap.toml 
    # Use different pre-set defaults than the global defaults.
#
# See `src/bootstrap/defaults` for more information.
# Note that this has no default value (x.py uses the defaults in `bootstrap.example.toml`).
profile = 'dist'

[llvm]

# Currently, we only support this when building LLVM for the build triple.
#
# Note that many of the LLVM options are not currently supported for
# downloading. Currently only the "assertions" option can be toggled.
download-ci-llvm = true

# Indicates whether the LLVM assertions are enabled or not
# NOTE: When assertions are disabled, bugs in the integration between rustc and LLVM can lead to
# unsoundness (segfaults, etc.) in the rustc process itself, not just in the generated code.
assertions = true

[gcc]

[build]

# Whether to build documentation by default. If false, rustdoc and
# friends will still be compiled but they will not be used to generate any
# documentation.
#
# You can still build documentation when this is disabled by explicitly passing paths,
# e.g. `x doc library`.
docs = false

# Arguments passed to the `./configure` script, used during distcheck. You
# probably won't fill this in but rather it's filled in by the `./configure`
# script. Useful for debugging.
configure-args = ['--release-channel=nightly', '--enable-llvm-assertions', '--enable-option-checking', '--disable-docs', '--set', 'llvm.download-ci-llvm=true']

[install]

[rust]

# The "channel" for the Rust build to produce. The stable/beta channels only
# allow using stable features, whereas the nightly and dev channels allow using
# nightly features.
#
# You can set the channel to "auto-detect" to load the channel name from `src/ci/channel`.
#
# If using tarball sources, default value is "auto-detect", otherwise, it's "dev".
channel = 'nightly'

[dist]

[target.aarch64-apple-darwin]
    build log

    build_output.txt

    Unfortunately I won't have access to my own Mac for the next two weeks, so I can't reproduce it atm.

    No worries. As mentioned above, I got it working on my linux machine, so I'm not totally blocked. However, it would be nice if I could get it working on my Mac 😉

  6. ZuseZ4 commented on Oct 23, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 23, 2025
    Member

    Glad you have at least linux working.
    If you have time to look into it further, you should probably try to add a dbg! statement to those two lines:

    rustc -Cllvm-args="..." with: Unknown command line argument '-mergefunc-use-aliases'.  Try: 'rustc -Cllvm-args="..." with --help'
[...]
Created at: src/bootstrap/src/core/builder/mod.rs:1614:23
Executed at: src/bootstrap/src/core/build_steps/compile.rs:538:26

    Also, looking at the (incomplete) rustc invocation failing with a lot of llvm args, my assumption is that the formating or something with one of the earlier commands is wrong, and then all following flags are not recognized. However, tha'ts hard to tell without seeing the full command. In autodiff we don't change the args mentioned in your error log, but I saw that the only usage of mergefunc-use-aliases within rustc is in
    compiler/rustc_codegen_llvm/src/llvm_util.rs. If you add another dbg statement at the end of the configure_llvm function to print the command, we might now more.
    If you get spammed by too much output you might want to look into the Tracing infra, there is a rustc-dev-guide entry about it. If you post the output of those we might be able to figure out what's wrong.

  7. ZuseZ4 commented on Oct 24, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 24, 2025
    Member

    fwiw github.com/rust-lang/enzyme/pull/30 macos ci also fails here.

  8. kevinyamauchi commented on Oct 26, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 26, 2025
    Author

    Thanks for the additional debugging tips, @ZuseZ4 . As suggested, I added some debugging statements around where the build is failing. I made the changes below. Based on the output, I can see the conditionals that are leading to the unrecognized arguments in configure_llvm(), but I am not at all familiar with the build system to know why they are triggered. I am happy to keep debugging if you have additional tips or ideas 😄

    src/bootstrap/src/core/builder/mod.rs:1613

        pub fn rustc_cmd(&self, compiler: Compiler) -> BootstrapCommand {
        let mut cmd = command(self.rustc(compiler));
        dbg!(&cmd);
        self.add_rustc_lib_path(compiler, &mut cmd);
        dbg!(&cmd);
        cmd
    }

    src/bootstrap/src/core/build_steps/compile.rs:531

        if target.contains("apple") && !builder.config.dry_run() {
        // Query rustc for the deployment target, and the associated env var.
        // The env var is one of the standard `*_DEPLOYMENT_TARGET` vars, i.e.
        // `MACOSX_DEPLOYMENT_TARGET`, `IPHONEOS_DEPLOYMENT_TARGET`, etc.
        let mut cmd = builder.rustc_cmd(cargo.compiler());
        cmd.arg("--target").arg(target.rustc_target_arg());
        cmd.arg("--print=deployment-target");
        dbg!(&cmd);
        dbg!(&builder);
        let output = cmd.run_capture_stdout(builder).stdout();
        dbg!(&output);

    /compiler/rustc_codegen_llvm/src/llvm_util.rs:73 (to print the string argument names in configure_llvm())

            // This adds the given argument to LLVM. Unless `force` is true
        // user specified arguments are *not* overridden.
        let mut add = |arg: &str, force: bool| {
            if force || !user_specified_args.contains(llvm_arg_to_arg_name(arg)) {
                dbg!(arg);
                let s = CString::new(arg).unwrap();
                llvm_args.push(s.as_ptr());
                llvm_c_strs.push(s);
            }
        };

    /compiler/rustc_codegen_llvm/src/llvm_util.rs:147

        rustc_llvm::initialize_available_targets();

    dbg!(&llvm_args);

    unsafe { llvm::LLVMRustSetLLVMOptions(llvm_args.len() as c_int, llvm_args.as_ptr()) };

    This yields the following output (deleted the source and re-cloned):

    [src/bootstrap/src/core/builder/mod.rs:1615:9] &cmd = "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" (failure_mode=Exit)
[src/bootstrap/src/core/builder/mod.rs:1617:9] &cmd = DYLD_LIBRARY_PATH="/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/lib" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" (failure_mode=Exit)
[src/bootstrap/src/core/build_steps/compile.rs:538:9] &cmd = DYLD_LIBRARY_PATH="/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/lib" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "--target" "aarch64-apple-darwin" "--print=deployment-target" (failure_mode=Exit)
running: DYLD_LIBRARY_PATH="/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/lib" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "--target" "aarch64-apple-darwin" "--print=deployment-target" (failure_mode=Exit) (created at src/bootstrap/src/core/builder/mod.rs:1614:23, executed at src/bootstrap/src/core/build_steps/compile.rs:539:26)
[compiler/rustc_codegen_llvm/src/llvm_util.rs:77:17] arg = "rustc -Cllvm-args=\"...\" with"
[compiler/rustc_codegen_llvm/src/llvm_util.rs:77:17] arg = "-generate-arange-section"
[compiler/rustc_codegen_llvm/src/llvm_util.rs:77:17] arg = "-mergefunc-use-aliases"
[compiler/rustc_codegen_llvm/src/llvm_util.rs:77:17] arg = "-preserve-alignment-assumptions-during-inlining=false"
[compiler/rustc_codegen_llvm/src/llvm_util.rs:77:17] arg = "-import-cold-multiplier=0.1"
[compiler/rustc_codegen_llvm/src/llvm_util.rs:149:5] &llvm_args = [
    0x0000600000d10060,
    0x0000600000d10000,
    0x0000600000d102a0,
    0x00006000018143c0,
    0x0000600000d102c0,
]
rustc -Cllvm-args="..." with: Unknown command line argument '-mergefunc-use-aliases'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--riscv-no-aliases'?
rustc -Cllvm-args="..." with: Unknown command line argument '-preserve-alignment-assumptions-during-inlining=false'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--mips-align-constant-islands=false'?
rustc -Cllvm-args="..." with: Unknown command line argument '-import-cold-multiplier=0.1'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--ignore-xcoff-visibility=0.1'?
Command `DYLD_LIBRARY_PATH="/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/lib" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "--target" "aarch64-apple-darwin" "--print=deployment-target" (failure_mode=Exit)` failed with exit code 1
Created at: src/bootstrap/src/core/builder/mod.rs:1614:23
Executed at: src/bootstrap/src/core/build_steps/compile.rs:539:26
    build log

    build_output.txt

    fwiw github.com/rust-lang/enzyme#30 macos ci also fails here.

    Good to know it's not just me 😉

  9. ZuseZ4 commented on Oct 27, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 27, 2025
    Member

    Hmm, if you say that you alao have a working linux system, could you use your mac for some automated bisection?
    https://rustc-dev-guide.rust-lang.org/compiler-debugging.html?highlight=bisecting#narrowing-bisecting-regressions

    I think starting with a 3 month old checkout should be good. Just configure it to always build llvm from source.
    I never had to use it, but I heared good things about it

  10. kevinyamauchi commented on Oct 27, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 27, 2025
    Author

    Thanks for the pointer to the cargo-bisect tool. Admittedly, I didn't try very hard, but I couldn't figure out how to get it to work with building from source, so I started with normal git bisect. I went back to 5210c50 (Aug. 1, 2025) and the build still failed with the same error. I used the "old" config using LLVM built from source. I wrote the commands I used and the error I received below.

    Before I go back further, I just wanted to check in to see if this is what you had in mind. My concern is that given that on current main rustc builds without the autodiff and Enzyme linking and that the Enzyme CI you linked above is also failing on Mac, this issue might be somehow related to Enzyme. I'm not sure how the linked version of Enzyme is specified in the build, so I am not sure if going back in rust commits will actually pull down different versions of Enzyme.

    This is what I tried:

    # download a fresh rust source
git clone git@github.com:rust-lang/rust
cd rust

# start git bisect and mark the current had as bad
git bisect start
git bisect bad

# checkout an old commit from Aug. 1, 2025
git checkout 5210c501bc7320d7cc5e84f77d2c7ca5fca9a2e0

# configure and build
./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs
 ./x build  --stage 1 library

    I received the same error as before:

    error message 
    Building stage1 tool lld-wrapper (aarch64-apple-darwin)
   Compiling lld-wrapper v0.1.0 (/Users/kyamauch/Documents/rust_source/rust/src/tools/lld-wrapper)
    Finished `release` profile [optimized] target(s) in 0.87s
Building stage1 tool wasm-component-ld (aarch64-apple-darwin)
  Downloaded wasi-preview1-component-adapter-provider v34.0.2
  Downloaded wasm-encoder v0.235.0
  Downloaded wat v1.235.0
  Downloaded wasm-metadata v0.234.0
  Downloaded clap_derive v4.5.41
  Downloaded wasm-component-ld v0.5.15
  Downloaded anyhow v1.0.98
  Downloaded clap v4.5.41
  Downloaded wasm-encoder v0.234.0
  Downloaded anstream v0.6.19
  Downloaded anstyle-query v1.1.3
  Downloaded wit-parser v0.234.0
  Downloaded wast v235.0.0
  Downloaded clap_builder v4.5.41
  Downloaded wit-component v0.234.0
  Downloaded wasmparser v0.235.0
  Downloaded 16 crates (1.4MiB) in 0.45s
   Compiling serde v1.0.219
   Compiling proc-macro2 v1.0.95
   Compiling unicode-ident v1.0.18
   Compiling semver v1.0.26
   Compiling bitflags v2.9.1
   Compiling foldhash v0.1.5
   Compiling leb128fmt v0.1.0
   Compiling equivalent v1.0.2
   Compiling libc v0.2.174
   Compiling wasmparser v0.234.0
   Compiling anyhow v1.0.98
   Compiling memchr v2.7.5
   Compiling serde_json v1.0.141
   Compiling wasm-encoder v0.234.0
   Compiling wasm-encoder v0.235.0
   Compiling utf8parse v0.2.2
   Compiling anstyle-parse v0.2.7
   Compiling anstyle-query v1.1.3
   Compiling quote v1.0.40
   Compiling syn v2.0.104
   Compiling anstyle v1.0.11
   Compiling getrandom v0.3.3
   Compiling colorchoice v1.0.4
   Compiling ryu v1.0.20
   Compiling is_terminal_polyfill v1.70.1
   Compiling rustix v1.0.8
   Compiling itoa v1.0.15
   Compiling anstream v0.6.19
   Compiling errno v0.3.13
   Compiling clap_lex v0.7.5
   Compiling unicode-xid v0.2.6
   Compiling cfg-if v1.0.1
   Compiling id-arena v2.2.1
   Compiling bumpalo v3.19.0
   Compiling strsim v0.11.1
   Compiling unicode-width v0.2.1
   Compiling heck v0.5.0
   Compiling log v0.4.27
   Compiling clap_builder v4.5.41
   Compiling fastrand v2.3.0
   Compiling once_cell v1.21.3
   Compiling wasi-preview1-component-adapter-provider v34.0.2
   Compiling lexopt v0.3.1
   Compiling wast v235.0.0
   Compiling hashbrown v0.15.4
   Compiling indexmap v2.10.0
   Compiling serde_derive v1.0.219
   Compiling clap_derive v4.5.41
   Compiling tempfile v3.20.0
   Compiling clap v4.5.41
   Compiling wat v1.235.0
   Compiling wit-parser v0.234.0
   Compiling wasm-metadata v0.234.0
   Compiling wit-component v0.234.0
   Compiling wasm-component-ld v0.5.15
   Compiling wasm-component-ld-wrapper v0.1.0 (/Users/kyamauch/Documents/rust_source/rust/src/tools/wasm-component-ld)
    Finished `release` profile [optimized] target(s) in 19.71s
Building stage1 tool llvm-bitcode-linker (aarch64-apple-darwin)
   Compiling once_cell v1.21.3
   Compiling lazy_static v1.5.0
   Compiling overload v0.1.1
   Compiling log v0.4.27
   Compiling syn v2.0.104
   Compiling thiserror v1.0.69
   Compiling thread_local v1.1.9
   Compiling smallvec v1.15.1
   Compiling nu-ansi-term v0.46.0
   Compiling sharded-slab v0.1.7
   Compiling tracing-core v0.1.30
   Compiling pin-project-lite v0.2.16
   Compiling tracing-log v0.2.0
   Compiling tracing-subscriber v0.3.18
   Compiling tracing-attributes v0.1.30
   Compiling clap_derive v4.5.41
   Compiling thiserror-impl v1.0.69
   Compiling tracing v0.1.37
   Compiling clap v4.5.41
   Compiling llvm-bitcode-linker v0.0.1 (/Users/kyamauch/Documents/rust_source/rust/src/tools/llvm-bitcode-linker)
    Finished `release` profile [optimized] target(s) in 3.51s
rustc -Cllvm-args="..." with: Unknown command line argument '-generate-arange-section'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--enzyme-coalese'?
rustc -Cllvm-args="..." with: Unknown command line argument '-mergefunc-use-aliases'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--enzyme-noalias'?
rustc -Cllvm-args="..." with: Unknown command line argument '-preserve-alignment-assumptions-during-inlining=false'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--enzyme-assume-unknown-nofree=false'?
rustc -Cllvm-args="..." with: Unknown command line argument '-import-cold-multiplier=0.1'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--print-all-options=0.1'?
Command has failed. Rerun with -v to see more details.
Build completed unsuccessfully in 0:33:51

  11. ZuseZ4 commented on Oct 27, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 27, 2025
    Member

    That's interesting. I've build on a mac since, but maybe my checkout was older, or there is a difference between m2 and m4 here.
    I'd try an older commit, I don't know git bisect, but your commands look right.

    One thing that you could try independently on master is to build without the llvm-link-shared flag. It's less tested, but I did add support for it at some point.

  12. kevinyamauchi commented on Oct 28, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 28, 2025
    Author

    Thanks for the feedback, @ZuseZ4 ! I'm slowly making progress with git bisect. It's a bit slow because the build takes ~30 mins. on my Mac. However, I've started to narrow in on the breaking commit:

    • most recent good commit found: d5a471c (July 17)
    • earliest bad commit found: 0570fb4 (July 27)

    There are ~9 iterations left to narrow in on the breaking commit. I will keep updating here as I make progress.

  13. ZuseZ4 commented on Oct 28, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 28, 2025
    Member

    #143388
    #143920
    #143722
    might be in the range.

  14. kevinyamauchi commented on Oct 29, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 29, 2025
    Author

    I've made a bit of progress on the git bisect. I've narrowed it down the the commits below. I should be able to finish it off tomorrow.

    5e3eb25 Rollup merge of #142097 - ZuseZ4:offload-host1, r=oli-obk
    3f9f20f Auto merge of #144154 - tgross35:update-builtins, r=tgross35
    c068599 add unstable-books doc for offload
    e2ab312 add gpu offload codegen host side test
    4a1a5a4 gpu host code generation
    5958ebe add various wrappers for gpu code generation
    6340164 add -Zoffload=Enable flag behind -Zunstable-options, to enable gpu (host) code generation
    42d6b0d make more builder functions generic
    3fb1af3 enzyme submodule update
    3f04631 Merge ref '82310651b93a' from rust-lang/rust
    208687e Prepare for merging from rust-lang/rust
    6b87978 (HEAD) Change the memcmp and bcmp return type to c_int
    7dacaef mem: Use core::ffi::c_int
    d963c78 Update the no-merges PR title
    5157aa1 Allow a new lint failure in nightly
    93e0074 Tell triagebot to reopen bot PRs to run CI on them
    7a1593c Add CI workflow for automatically performing subtree sync pulls
    f5c9403 Upgrade iai-callgrind to 0.15
    0e00ba1 Upgrade dependencies to the latest version
    f6d3890 Add documentation about subtree sync
    f2b5199 Add josh-sync config file
    2f20628 Remove josh-sync crate

  15. kevinyamauchi commented on Oct 30, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 30, 2025
    Author

    Thank you for your patience, @ZuseZ4 . I think I have narrowed in on the breaking commit: 3fb1af3. Looking at the content, it seems plausible, but I am not familiar enough with the project to identify what the breaking change is. I hope this is helpful!

    To reproduce

    First, checkout 3fb1af3 and confirm the build fails:

    # pull down a fresh source
git clone git@github.com:rust-lang/rust
cd rust

# configure the build
./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs

# get the breaking commit
git checkout 3fb1af39876d1d3fadc48b1f66edb52bcfc3d04a

# run the build
./x build --stage 1 library

    This results in the error message reported above

    error message 
    Building stage0 tool wasm-component-ld (aarch64-apple-darwin)
   Compiling serde v1.0.219
   Compiling proc-macro2 v1.0.95
   Compiling unicode-ident v1.0.18
   Compiling foldhash v0.1.5
   Compiling bitflags v2.9.1
   Compiling semver v1.0.26
   Compiling leb128fmt v0.1.0
   Compiling libc v0.2.174
   Compiling wasmparser v0.234.0
   Compiling equivalent v1.0.2
   Compiling anyhow v1.0.98
   Compiling memchr v2.7.5
   Compiling serde_json v1.0.140
   Compiling utf8parse v0.2.2
   Compiling wasm-encoder v0.234.0
   Compiling wasm-encoder v0.235.0
   Compiling anstyle-parse v0.2.7
   Compiling quote v1.0.40
   Compiling rustix v1.0.7
   Compiling ryu v1.0.20
   Compiling syn v2.0.104
   Compiling colorchoice v1.0.4
   Compiling getrandom v0.3.3
   Compiling anstyle v1.0.11
   Compiling itoa v1.0.15
   Compiling is_terminal_polyfill v1.70.1
   Compiling anstyle-query v1.1.3
   Compiling errno v0.3.13
   Compiling anstream v0.6.19
   Compiling strsim v0.11.1
   Compiling unicode-xid v0.2.6
   Compiling unicode-width v0.2.1
   Compiling cfg-if v1.0.1
   Compiling id-arena v2.2.1
   Compiling clap_lex v0.7.5
   Compiling heck v0.5.0
   Compiling bumpalo v3.19.0
   Compiling log v0.4.27
   Compiling clap_builder v4.5.40
   Compiling fastrand v2.3.0
   Compiling once_cell v1.21.3
   Compiling lexopt v0.3.1
   Compiling wasi-preview1-component-adapter-provider v34.0.1
   Compiling wast v235.0.0
   Compiling tempfile v3.20.0
   Compiling hashbrown v0.15.4
   Compiling serde_derive v1.0.219
   Compiling clap_derive v4.5.40
   Compiling indexmap v2.10.0
   Compiling clap v4.5.40
   Compiling wat v1.235.0
   Compiling wit-parser v0.234.0
   Compiling wasm-metadata v0.234.0
   Compiling wit-component v0.234.0
   Compiling wasm-component-ld v0.5.15
   Compiling wasm-component-ld-wrapper v0.1.0 (/Users/kyamauch/Documents/rust_source/3fb1af39876d1d3fadc48b1f66edb52bcfc3d04a/rust/src/tools/wasm-component-ld)
    Finished `release` profile [optimized] target(s) in 1m 11s
Building tool llvm-bitcode-linker (stage0 -> stage1, aarch64-apple-darwin)
   Compiling proc-macro2 v1.0.95
   Compiling unicode-ident v1.0.18
   Compiling utf8parse v0.2.2
   Compiling once_cell v1.21.3
   Compiling anstyle v1.0.11
   Compiling cfg-if v1.0.1
   Compiling is_terminal_polyfill v1.70.1
   Compiling colorchoice v1.0.4
   Compiling anstyle-query v1.1.3
   Compiling anstyle-parse v0.2.7
   Compiling strsim v0.11.1
   Compiling overload v0.1.1
   Compiling anyhow v1.0.98
   Compiling clap_lex v0.7.5
   Compiling lazy_static v1.5.0
   Compiling log v0.4.27
   Compiling tracing-core v0.1.30
   Compiling anstream v0.6.19
   Compiling heck v0.5.0
   Compiling thiserror v1.0.69
   Compiling sharded-slab v0.1.7
   Compiling nu-ansi-term v0.46.0
   Compiling thread_local v1.1.9
   Compiling pin-project-lite v0.2.16
   Compiling smallvec v1.15.1
   Compiling clap_builder v4.5.40
   Compiling quote v1.0.40
   Compiling tracing-log v0.2.0
   Compiling syn v2.0.104
   Compiling tracing-subscriber v0.3.18
   Compiling thiserror-impl v1.0.69
   Compiling clap_derive v4.5.40
   Compiling tracing-attributes v0.1.30
   Compiling tracing v0.1.37
   Compiling clap v4.5.40
   Compiling llvm-bitcode-linker v0.0.1 (/Users/kyamauch/Documents/rust_source/3fb1af39876d1d3fadc48b1f66edb52bcfc3d04a/rust/src/tools/llvm-bitcode-linker)
    Finished `release` profile [optimized] target(s) in 17.81s
rustc -Cllvm-args="..." with: Unknown command line argument '-generate-arange-section'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--enzyme-coalese'?
rustc -Cllvm-args="..." with: Unknown command line argument '-mergefunc-use-aliases'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--enzyme-noalias'?
rustc -Cllvm-args="..." with: Unknown command line argument '-preserve-alignment-assumptions-during-inlining=false'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--enzyme-assume-unknown-nofree=false'?
rustc -Cllvm-args="..." with: Unknown command line argument '-import-cold-multiplier=0.1'.  Try: 'rustc -Cllvm-args="..." with --help'
rustc -Cllvm-args="..." with: Did you mean '--print-all-options=0.1'?
Command has failed. Rerun with -v to see more details.
Build completed unsuccessfully in 1:59:02

    Next get a previous commit (3f04631) in a fresh source and verify that it passes

    # pull down a fresh source
git clone git@github.com:rust-lang/rust
cd rust

# configure the build
./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs

# get the breaking commit
git checkout 3f04631ce0169be8cce54f6c6950e86d644c0fc4

# run the build
./x build --stage 1 library

# run the tests
./x test --stage 1 tests/pretty/autodiff
./x test --stage 1 tests/ui/autodiff
./x test --stage 1 tests/ui/feature-gates/feature-gate-autodiff.rs

  16. ZuseZ4 commented on Oct 30, 2025

    @ZuseZ4
    ZuseZ4
    on Oct 30, 2025
    Member

    Oh, thanks for figuring that out.
    Our Enzyme fork has two extra commits, one which carries benchmarks, one which fixes static linking which Enzyme upstream does wrong.
    I suspect that the linking fix breaks macos. Can you locally try to build on master, but first change enzyme to drop its two extra commits. Remember to commit any changes to the submodule, or our bootstrap infra will reset and undo them.

    If that fixes it, we'll either need to not put rust master to my static linking fix, or figure out why it's only workng it on linux.

  17. kevinyamauchi commented on Oct 30, 2025

    @kevinyamauchi
    kevinyamauchi
    on Oct 30, 2025
    Author

    Thanks for the suggestion, @ZuseZ4 ! I tried as you suggested. However, I don't think I reverted the commits properly as when I ran the build command I received the same error. After receiving the error, I checked the rust/src/tools/enzyme directory and saw that it was back to the original version (i.e., the commits I added to revert the two you mentinoed above were no longer visible in git log).

    This is what I did:

    # clone a fresh source and pull down the submodules
git clone git@github.com:rust-lang/rust
cd rust/src/tools/enzyme
git submodule init
git submodule update

# revert the last two commits
# I could see the commits added in git log that reverted the two most recent commits (linking + benchmarks)
git revert HEAD HEAD~1

# configure and build
cd ../../..
./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs
./x build  --stage 1 library

    build_output.txt

    I am not very familiar with git submodules. Is there a better/different way I should have reverted the last two commits in the enzyme submodule?

  18. ZuseZ4
    self-assigned this
    on Nov 6, 2025

  19. ZuseZ4 commented on Nov 6, 2025

    @ZuseZ4
    ZuseZ4
    on Nov 6, 2025
    Member

    I will build it tomorrow on my own m4 now that I'm back home. I'm not a git expert either, but maybe I'm lucky if I poke it a bit.

  20. kevinyamauchi commented on Nov 6, 2025

    @kevinyamauchi
    kevinyamauchi
    on Nov 6, 2025
    Author

    That would be great. Thank you!

  21. ZuseZ4 commented on Dec 16, 2025

    @ZuseZ4
    ZuseZ4
    on Dec 16, 2025
    Member

    sorry that it took me so long, but some adjacent work on how we load Enzyme from #149271 should have fixed that. Can you verify that? Btw., it seems like the culprit indeed was the last Enzyme commit about static builds in our Enzyme fork, as I suspected above. Unfortunately changing submodules managed by our bootstrap infra is a bit tricky, so I assume your local changes got undone by it, hence why you still failed to build it.

  22. kevinyamauchi commented on Dec 17, 2025

    @kevinyamauchi
    kevinyamauchi
    on Dec 17, 2025
    Author

    Hey, @ZuseZ4. No worries, thanks for the update! I tested again and I can now successfully build rust with autodiff on my Mac!

    However, I tried some of the tests and I get some failures from tests/codegen-llvm/autodiff and tests/ui/autodiff. The tests in tests/pretty/autodiff and tests/ui/feature-gates/feature-gate-autodiff.rs were ignored. I have pasted the output and the code to reproduce below. I haven't had a chance to test compiling some of my own code yet.

    tests/codegen-llvm/autodiff failure output 
    failures:

---- [codegen] tests/codegen-llvm/autodiff/identical_fnc.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/identical_fnc.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/identical_fnc/identical_fnc.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/identical_fnc.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/sret.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/sret.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/sret/sret.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable,NoTT" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/sret.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/abi_handling.rs#debug stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error in revision `debug`: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/abi_handling.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--cfg" "debug" "--check-cfg" "cfg(test,FALSE,debug,release)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/abi_handling.debug/abi_handling.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable,NoTT" "-C" "opt-level=0" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/abi_handling.rs#debug stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/scalar.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/scalar.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/scalar/scalar.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable,NoTT" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/scalar.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/generic.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
warning: unused variable: `output_f64`
  --> /Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/generic.rs:41:9
   |
41 |     let output_f64 = d_square::<f64>(&xf64, &mut df_dxf64, 1.0);
   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_f64`
   |
   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default

Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/generic.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/generic/generic.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable" "-Zautodiff=NoPostopt" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
warning: unused variable: `output_f64`
  --> /Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/generic.rs:41:9
   |
41 |     let output_f64 = d_square::<f64>(&xf64, &mut df_dxf64, 1.0);
   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_f64`
   |
   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default

Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/generic.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/batched.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/batched.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/batched/batched.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable,NoTT,NoPostopt" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/batched.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/abi_handling.rs#release stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error in revision `release`: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/abi_handling.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--cfg" "release" "--check-cfg" "cfg(test,FALSE,debug,release)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/abi_handling.release/abi_handling.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable,NoTT" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/abi_handling.rs#release stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/trait.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/trait.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/trait/trait.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable" "-Zautodiff=NoPostopt" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/trait.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/typetree.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/typetree.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/typetree/typetree.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/typetree.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/void_ret.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------


error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/void_ret.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/void_ret/void_ret.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable,NoTT,NoPostopt" "-C" "no-prepopulate-passes" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/void_ret.rs stdout end ----
---- [codegen] tests/codegen-llvm/autodiff/autodiffv2.rs stdout ----
------rustc stdout------------------------------

------rustc stderr------------------------------
warning: unused variable: `dx1`
  --> /Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/autodiffv2.rs:44:9
   |
44 |     let dx1 = std::hint::black_box(vec![1.0; 12]);
   |         ^^^ help: if this is intentional, prefix it with an underscore: `_dx1`
   |
   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default

Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

------------------------------------------

error: compilation failed!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/autodiffv2.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--check-cfg" "cfg(test,FALSE)" "-O" "-Cdebug-assertions=no" "-Zcodegen-source-order" "--emit" "llvm-ir" "-o" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/codegen-llvm/autodiff/autodiffv2/autodiffv2.ll" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Zautodiff=Enable" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
warning: unused variable: `dx1`
  --> /Users/kyamauch/Documents/rust_source/rust/tests/codegen-llvm/autodiff/autodiffv2.rs:44:9
   |
44 |     let dx1 = std::hint::black_box(vec![1.0; 12]);
   |         ^^^ help: if this is intentional, prefix it with an underscore: `_dx1`
   |
   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default

Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [codegen] tests/codegen-llvm/autodiff/autodiffv2.rs stdout end ----

failures:
    [codegen] tests/codegen-llvm/autodiff/identical_fnc.rs
    [codegen] tests/codegen-llvm/autodiff/sret.rs
    [codegen] tests/codegen-llvm/autodiff/abi_handling.rs#debug
    [codegen] tests/codegen-llvm/autodiff/scalar.rs
    [codegen] tests/codegen-llvm/autodiff/generic.rs
    [codegen] tests/codegen-llvm/autodiff/batched.rs
    [codegen] tests/codegen-llvm/autodiff/abi_handling.rs#release
    [codegen] tests/codegen-llvm/autodiff/trait.rs
    [codegen] test
                  s/codegen-llvm/autodiff/typetree.rs
    [codegen] tests/codegen-llvm/autodiff/void_ret.rs
    [codegen] tests/codegen-llvm/autodiff/autodiffv2.rs

test result: FAILED. 0 passed; 11 failed; 0 ignored; 0 measured; 961 filtered out; finished in 314.36ms

Some tests failed in compiletest suite=codegen-llvm mode=codegen host=aarch64-apple-darwin target=aarch64-apple-darwin
Build completed unsuccessfully in 0:00:07
    tests/ui/autodiff failure output 
    failures:

---- [ui] tests/ui/autodiff/no_lto_flag.rs#with_lto stdout ----

error in revision `with_lto`: test compilation failed although it shouldn't!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/ui/autodiff/no_lto_flag.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--cfg" "with_lto" "--check-cfg" "cfg(test,FALSE,with_lto,no_lto)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--out-dir" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/ui/autodiff/no_lto_flag.with_lto" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/native/rust-test-helpers" "-Zautodiff=Enable" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [ui] tests/ui/autodiff/no_lto_flag.rs#with_lto stdout end ----
---- [ui] tests/ui/autodiff/incremental.rs#RELEASE stdout ----

error in revision `RELEASE`: test compilation failed although it shouldn't!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/ui/autodiff/incremental.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--cfg" "release" "--check-cfg" "cfg(test,FALSE,debug,release)" "-C" "incremental=/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/ui/autodiff/incremental.RELEASE/incremental.inc" "-Z" "incremental-verify-ich" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--out-dir" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/ui/autodiff/incremental.RELEASE" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/native/rust-test-helpers" "-Zautodiff=Enable,NoTT" "-C" "opt-level=3" "-Clto=fat"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [ui] tests/ui/autodiff/incremental.rs#RELEASE stdout end ----
---- [ui] tests/ui/autodiff/incremental.rs#DEBUG stdout ----

error in revision `DEBUG`: test compilation failed although it shouldn't!
status: signal: 6 (SIGABRT)
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1/bin/rustc" "/Users/kyamauch/Documents/rust_source/rust/tests/ui/autodiff/incremental.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/Users/kyamauch/Documents/rust_source/rust/vendor" "--sysroot" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/stage1" "--target=aarch64-apple-darwin" "--cfg" "debug" "--check-cfg" "cfg(test,FALSE,debug,release)" "-C" "incremental=/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/ui/autodiff/incremental.DEBUG/incremental.inc" "-Z" "incremental-verify-ich" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--out-dir" "/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/test/ui/autodiff/incremental.DEBUG" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Lnative=/Users/kyamauch/Documents/rust_source/rust/build/aarch64-apple-darwin/native/rust-test-helpers" "-Zautodiff=Enable,NoTT" "-C" "opt-level=0" "-Clto=fat" "-C" "debuginfo=2"
stdout: none
--- stderr -------------------------------
Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.
------------------------------------------

---- [ui] tests/ui/autodiff/incremental.rs#DEBUG stdout end ----

failures:
    [ui] tests/ui/autodiff/no_lto_flag.rs#with_lto
    [ui] tests/ui/autodiff/incremental.rs#RELEASE
    [ui] tests/ui/autodiff/incremental.rs#DEBUG

test result: FAILED. 0 passed; 3 failed; 11 ignored; 0 measured; 20254 filtered out; finished in 288.14ms

    To reproduce:

    # pull down a fresh source
git clone git@github.com:rust-lang/rust
cd rust

# configure the build
./configure --enable-llvm-link-shared --enable-llvm-plugins --enable-llvm-enzyme --release-channel=nightly --enable-llvm-assertions --enable-clang --enable-lld --enable-option-checking --enable-ninja --disable-docs

# run the build
./x build --stage 1 library

# run the tests
./x test --stage 1 tests/codegen-llvm/autodiff
./x test --stage 1 tests/pretty/autodiff
./x test --stage 1 tests/ui/autodiff
./x test --stage 1 tests/ui/feature-gates/feature-gate-autodiff.rs

  23. sgasho commented on Dec 17, 2025

    @sgasho
    sgasho
    on Dec 17, 2025
    Contributor

    @kevinyamauchi

    // get the breaking commit
    git checkout 3f04631ce0169be8cce54f6c6950e86d644c0fc4

    It seems that this commit hash is old. How about running tests on the current main branch?
    Some tests still fail and I fixed them on this PR: #149986
    I'm not so sure why "This analysis pass was not registered prior to being queried" error occurs on the commit above though....

  24. ZuseZ4 commented on Jan 2, 2026

    @ZuseZ4
    ZuseZ4
    on Jan 2, 2026
    Member

    Great to hear. Some test failures are expected, since we currently only run our autodiff frontend in CI.
    The codegen-llvm tests are only tested locally, and my focus is rather on getting things into CI, then spending a lot of time on those failures. As long as the majority pass, you should be good. Closing here, but let me know if you encounter new bus!

  25. ZuseZ4
    closed this as completedon Jan 2, 2026

  26. jmelo11 commented on Jan 17, 2026

    @jmelo11
    jmelo11
    on Jan 17, 2026

    Hi, I'm having also problems when running the tests and latter building projects with autodiff. Is this expected? For example

    Assertion failed: (AnalysisPasses.count(PassT::ID()) && "This analysis pass was not registered prior to being queried"), function getResult, file PassManager.h, line 414.

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C-bugCategory: This is a bug.F-autodiff`#![feature(autodiff)]`O-macosOperating system: macOST-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

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