EnzymeAD/Enzyme

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High-performance automatic differentiation of LLVM and MLIR.

Stars: 1.7k
Forks: 188
Open beginner issues: 0
Indexed issues: 209
Avg merge: 2d 4h
Merged PRs (30d): 22

Dominant language: LLVM
License: No license data
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

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209 open issues indexed

Enzyme should specify the full llvm lib path Open

needs more information

EnzymeAD/Enzyme#2289 · 6 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Examples, tests, or FOM? Open

EnzymeAD/Enzyme#2298 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Assertion `pair.second == ConcreteType(BaseType::Pointer) || pair.second == ConcreteType(BaseType::Anything) Open

needs more information

EnzymeAD/Enzyme#2311 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Enzyme crash when using OpenMP: PHI nodes not grouped at top of basic block! Open

EnzymeAD/Enzyme#2316 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
OpenMP reductions seem unsupported Open

EnzymeAD/Enzyme#2317 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Enzyme: No forward mode derivative found Open

EnzymeAD/Enzyme#2319 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Curious if there's a way to get gradients wrt final instead of initial values for mutating functions Open

EnzymeAD/Enzyme#2330 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Enzyme: Cannot deduce type of extract for CUDA code Open

EnzymeAD/Enzyme#2342 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
OpenMP reductions not supported Open

EnzymeAD/Enzyme#2345 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Tests failing (for the opaque pointers?) Open

EnzymeAD/Enzyme#2346 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add MacOS CI for LLVM 20+ Open

EnzymeAD/Enzyme#2358 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[MLIR] Add cache for isReadOnly queries -- especially in activity analysis Open

EnzymeAD/Enzyme#2361 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unable to build with `-O0 -mllvm -enzyme-auto-sparsity=1` Open

EnzymeAD/Enzyme#2366 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Bug] `unordered_map` access Open

EnzymeAD/Enzyme#2367 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[Bug] `std::list` Insertion Open

EnzymeAD/Enzyme#2369 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
enzyme build fail with clang on for windows Open

EnzymeAD/Enzyme#2382 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Zig standard library pow function causes enzyme to fail Open

EnzymeAD/Enzyme#2388 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Incorrect results on arm arch Open

EnzymeAD/Enzyme#2390 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Emit C++ Warning if "Activating" constant arguments Open

EnzymeAD/Enzyme#2396 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Inconsistent Undefined Gradient for `abs(x)` at `x = 0` Compared to Other AD Tools Open

EnzymeAD/Enzyme#2404 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
crash with runtime activity (not no crash plain) Open

EnzymeAD/Enzyme#2408 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
BLAS rule for nrm2 at [0.0] return NaN Open

forward mode

EnzymeAD/Enzyme#2419 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Compiler error when using Eigen's matrix multiplication Open

EnzymeAD/Enzyme#2437 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Regression: No augmented forward pass found for _RNvCsbpInmopFggX_7___rustc19___rust_alloc_zeroed(__rustc::__rust_alloc_zeroed) Open

EnzymeAD/Enzyme#2444 · 11 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Custom `sinc` path not working Open

EnzymeAD/Enzyme#2450 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cannot deduce type of extract error for cuda code Open

EnzymeAD/Enzyme#2463 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
enzyme-detect-readthrow=1 option make the clang compliation stalls Open

EnzymeAD/Enzyme#2467 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`enzyme::autodiff` compile error when a callable struct is passed Open

EnzymeAD/Enzyme#2485 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
"freeing without malloc" and "unknown tbaa call" warnings Open

EnzymeAD/Enzyme#2490 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
enzyme crash for O1, O2, O3 but fine for O0 Open

EnzymeAD/Enzyme#2506 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[MLIR] Changes to fallback Batch implementation Open

EnzymeAD/Enzyme#2526 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Support for `sincos` NVIDIA intrinsic Open

EnzymeAD/Enzyme#2552 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Derived cache issue Open

EnzymeAD/Enzyme#2554 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Rematerializable allocation issue Open

EnzymeAD/Enzyme#2556 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
PHI Node must not have any attached DbgRecords in cuda debug mode Open

EnzymeAD/Enzyme#2563 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
unknown tbaa call instruction user inst: %249 = tail call double @tanh(double noundef %248) #37, !tbaa !4 vdptr: {[]:Pointer, [-1]:Integer} Open

EnzymeAD/Enzyme#2567 · 5 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
enzyme crashed for cuda when using clang 20.1.8 Open

EnzymeAD/Enzyme#2568 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Inspect adjoint values Open

EnzymeAD/Enzyme#2602 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Compilation failure when using enzyme_out with matrix derivatives Open

EnzymeAD/Enzyme#2623 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unable to differentiate a function adding three values with -enzyme-auto-sparsity=1 Open

EnzymeAD/Enzyme#2627 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Enzyme miscompiles nested branch with outer: uninitialized taped predicate causes inactive path to execute Open

EnzymeAD/Enzyme#2629 · 1 comment · 1 reaction · 2 assignees · Indexed Sep 15, 2026
Enzyme: Cannot deduce type of extract %29 = extractvalue [2 x float] %28, 0, !dbg !1270{} start: 0 size: 4 extractSize: 4 Open

EnzymeAD/Enzyme#2630 · 1 comment · 1 reaction · 2 assignees · Indexed Sep 15, 2026
enzyme crashes with clang21.1.7 but fine with clang19.1.7 Open

EnzymeAD/Enzyme#2634 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Enzyme compilation failure with eigen matrix Open

EnzymeAD/Enzyme#2654 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MLIR support for differentiating parallel loops Open

mlir

EnzymeAD/Enzyme#2658 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Virtual functions differentiation with free function doesn't work Open

EnzymeAD/Enzyme#2666 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Compilation error differentiating Eigen::Matrix::inverse() with Enzyme forward-mode when matrix size ≥ 4 Open

EnzymeAD/Enzyme#2679 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
C++ `__enzyme_register_derivative` with return types Open

EnzymeAD/Enzyme#2689 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Promote Enzyme pass remarks to warnings when they indicate result may be incorrect Open

EnzymeAD/Enzyme#2765 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Broken Enzyme_LLVM_BINARY_DIR environment variable Open

EnzymeAD/Enzyme#2773 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026

EnzymeAD/Enzyme

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