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close #6286.
This PR is to improve the diagnostics for no_diff usage.
In a differentiable function, any calls to a non-diff function with constant arguments should not require no_diff attribute.
This PR adds this extra check at `checkAutoDiffUsages` where it checks the differentiability on IR.
In a differentiable method, we will force to use `[NoDiffThis]` attribute if there is access to non-differentiable `This` type. Once this access is detected we will report a warning to bring users attention that this access won't generate any derivative, they have to use `[NoDiffThis]` to suppress that warning.
This PR adds this check at type checking stage, because it's the easiest way to find out all the `This` accesses.
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differentiable functions (#5866)
* Overhauled the auto-diff system for dynamic dispatch
* More fixes
* remove intermediate dumps
* Update slang-ast-type.h
* More fixes + add a workaround for existential no-diff
* Update reverse-control-flow-3.slang
* remove dumps
* remove more dumps
* Delete working-reverse-control-flow-3.hlsl
* Cleanup comments + unused variables
* More comment cleanup
* Add support for lowering `DiffPairType(TypePack)` & `MakePair(MakeValuePack, MakeValuePack)`
* Fix array of issues in Falcor tests.
* Update slang-ir-autodiff-pairs.cpp
* More fixes for Falcor image tests
* Small fixups.
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Co-authored-by: Yong He <yonghe@outlook.com>
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* Support visibility control and default to `internal`.
* Fix wip.
* Fixes.
* Fix.
* Fix test.
* Add legacy language detection and compatibility for existing code.
* Add doc.
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Co-authored-by: Yong He <yhe@nvidia.com>
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defining custom derivatives (#2947)
* Issue diagnostic for incorrect directionality when defining custom derivative
* Better diagnostics on invalid custom derivatives
* Avoid duplicating `getParameterDirection()`
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Co-authored-by: Yong He <yonghe@outlook.com>
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* Add a test for the new diff material system
* Various fixes for AD
- inout primal context params converted to out params,
- added attributed types to list of stored types
- used differentiated primal func type instead of type of differentiated func to avoid tangling with user-code differential types.
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Co-authored-by: Lifan Wu <lifanw@nvidia.com>
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