…rn-position, r=estebank

fix: point at method call chain when a return-position `impl Trait` assoc type diverges

a mismatch on `-> impl Iterator<Item = Ty>` only pointed at the signature, not at the call in the returned chain where `Item` actually changed. the failed predicate is useless for this, its already rewritten through the impls it was derived from, so the expected assoc types are read from the opaques own bounds and probed against the returned expression. on divergence the existing `point_at_chain` walk kicks in, same as it does for function arguments. handles the chain at the tail expression, behind a `let` binding and derived through adapters like `flatten`. unrelated failures stay silent since the probe just doesnt resolve there.

fixes rust-lang#106993

r? @estebank

Rollup of 10 pull requests

Successful merges:

 - #156977 (interpret: properly check for inhabitedness of nested references)
 - #159365 (fix: point at method call chain when a return-position `impl Trait` assoc type diverges)
 - #159402 (Clarify safety requirements for SIMD shl/shr and masked load/store)
 - #159410 (rustdoc: remove old `--emit` types)
 - #159302 (Implement `Debug` helpers via `Cell`)
 - #159386 (add a fallback for `fmuladdf*`)
 - #159391 (Update tests for LLVM 23)
 - #159400 (Update books)
 - #159401 (Gate `tests/debuginfo/function-call.rs` on min GDB 15.1)
 - #159404 ([aarch64][win] Pass oversized c-variadic args indirectly on Arm64EC)

…, r=estebank

fix: point at method call chain when a return-position `impl Trait` assoc type diverges

a mismatch on `-> impl Iterator<Item = Ty>` only pointed at the signature, not at the call in the returned chain where `Item` actually changed. the failed predicate is useless for this, its already rewritten through the impls it was derived from, so the expected assoc types are read from the opaques own bounds and probed against the returned expression. on divergence the existing `point_at_chain` walk kicks in, same as it does for function arguments. handles the chain at the tail expression, behind a `let` binding and derived through adapters like `flatten`. unrelated failures stay silent since the probe just doesnt resolve there.

fixes #106993

r? @estebank

…rn-position, r=estebank

fix: point at method call chain when a return-position `impl Trait` assoc type diverges

a mismatch on `-> impl Iterator<Item = Ty>` only pointed at the signature, not at the call in the returned chain where `Item` actually changed. the failed predicate is useless for this, its already rewritten through the impls it was derived from, so the expected assoc types are read from the opaques own bounds and probed against the returned expression. on divergence the existing `point_at_chain` walk kicks in, same as it does for function arguments. handles the chain at the tail expression, behind a `let` binding and derived through adapters like `flatten`. unrelated failures stay silent since the probe just doesnt resolve there.

fixes rust-lang#106993

r? @estebank

…uwer

Rollup of 10 pull requests

Successful merges:

 - #159365 (fix: point at method call chain when a return-position `impl Trait` assoc type diverges)
 - #159402 (Clarify safety requirements for SIMD shl/shr and masked load/store)
 - #159410 (rustdoc: remove old `--emit` types)
 - #159302 (Implement `Debug` helpers via `Cell`)
 - #159386 (add a fallback for `fmuladdf*`)
 - #159391 (Update tests for LLVM 23)
 - #159400 (Update books)
 - #159401 (Gate `tests/debuginfo/function-call.rs` on min GDB 15.1)
 - #159404 ([aarch64][win] Pass oversized c-variadic args indirectly on Arm64EC)
 - #159405 (Manually implement Clone for GrowableBitSet)

…rn-position, r=estebank

fix: point at method call chain when a return-position `impl Trait` assoc type diverges

a mismatch on `-> impl Iterator<Item = Ty>` only pointed at the signature, not at the call in the returned chain where `Item` actually changed. the failed predicate is useless for this, its already rewritten through the impls it was derived from, so the expected assoc types are read from the opaques own bounds and probed against the returned expression. on divergence the existing `point_at_chain` walk kicks in, same as it does for function arguments. handles the chain at the tail expression, behind a `let` binding and derived through adapters like `flatten`. unrelated failures stay silent since the probe just doesnt resolve there.

fixes rust-lang#106993

r? @estebank

…uwer

Rollup of 16 pull requests

Successful merges:

 - #150732 (Convert `-Ctarget-cpu` into a target-modifier for AVR, AMDGCN and NVPTX )
 - #159301 (Update Enzyme to handle LLVM23)
 - #159365 (fix: point at method call chain when a return-position `impl Trait` assoc type diverges)
 - #159402 (Clarify safety requirements for SIMD shl/shr and masked load/store)
 - #159410 (rustdoc: remove old `--emit` types)
 - #158398 (Comment about empty run_passes, fixup of #158040)
 - #158843 (Fix ICE in `write_interface` when the interface file can't be written)
 - #159302 (Implement `Debug` helpers via `Cell`)
 - #159332 (Honor field-level lint attributes in non_snake_case)
 - #159386 (add a fallback for `fmuladdf*`)
 - #159391 (Update tests for LLVM 23)
 - #159400 (Update books)
 - #159401 (Gate `tests/debuginfo/function-call.rs` on min GDB 15.1)
 - #159404 ([aarch64][win] Pass oversized c-variadic args indirectly on Arm64EC)
 - #159405 (Manually implement Clone for GrowableBitSet)
 - #159415 (rustdoc: rename the doc parts metadata params)

…uwer

Rollup of 17 pull requests

Successful merges:

 - #159301 (Update Enzyme to handle LLVM23)
 - #159365 (fix: point at method call chain when a return-position `impl Trait` assoc type diverges)
 - #159402 (Clarify safety requirements for SIMD shl/shr and masked load/store)
 - #159408 (rustc_data_structures: Expand documentation for rustc jobserver APIs)
 - #159410 (rustdoc: remove old `--emit` types)
 - #158398 (Comment about empty run_passes, fixup of #158040)
 - #158843 (Fix ICE in `write_interface` when the interface file can't be written)
 - #159302 (Implement `Debug` helpers via `Cell`)
 - #159332 (Honor field-level lint attributes in non_snake_case)
 - #159340 (Rename `errors.rs` file to `diagnostics.rs` (14/N))
 - #159386 (add a fallback for `fmuladdf*`)
 - #159391 (Update tests for LLVM 23)
 - #159400 (Update books)
 - #159401 (Gate `tests/debuginfo/function-call.rs` on min GDB 15.1)
 - #159404 ([aarch64][win] Pass oversized c-variadic args indirectly on Arm64EC)
 - #159405 (Manually implement Clone for GrowableBitSet)
 - #159415 (rustdoc: rename the doc parts metadata params)

Rollup merge of #159365 - Albab-Hasan:point-at-chain-in-return-position, r=estebank

fix: point at method call chain when a return-position `impl Trait` assoc type diverges

a mismatch on `-> impl Iterator<Item = Ty>` only pointed at the signature, not at the call in the returned chain where `Item` actually changed. the failed predicate is useless for this, its already rewritten through the impls it was derived from, so the expected assoc types are read from the opaques own bounds and probed against the returned expression. on divergence the existing `point_at_chain` walk kicks in, same as it does for function arguments. handles the chain at the tail expression, behind a `let` binding and derived through adapters like `flatten`. unrelated failures stay silent since the probe just doesnt resolve there.

fixes #106993

r? @estebank

…uwer

Rollup of 17 pull requests

Successful merges:

 - rust-lang/rust#159301 (Update Enzyme to handle LLVM23)
 - rust-lang/rust#159365 (fix: point at method call chain when a return-position `impl Trait` assoc type diverges)
 - rust-lang/rust#159402 (Clarify safety requirements for SIMD shl/shr and masked load/store)
 - rust-lang/rust#159408 (rustc_data_structures: Expand documentation for rustc jobserver APIs)
 - rust-lang/rust#159410 (rustdoc: remove old `--emit` types)
 - rust-lang/rust#158398 (Comment about empty run_passes, fixup of rust-lang/rust#158040)
 - rust-lang/rust#158843 (Fix ICE in `write_interface` when the interface file can't be written)
 - rust-lang/rust#159302 (Implement `Debug` helpers via `Cell`)
 - rust-lang/rust#159332 (Honor field-level lint attributes in non_snake_case)
 - rust-lang/rust#159340 (Rename `errors.rs` file to `diagnostics.rs` (14/N))
 - rust-lang/rust#159386 (add a fallback for `fmuladdf*`)
 - rust-lang/rust#159391 (Update tests for LLVM 23)
 - rust-lang/rust#159400 (Update books)
 - rust-lang/rust#159401 (Gate `tests/debuginfo/function-call.rs` on min GDB 15.1)
 - rust-lang/rust#159404 ([aarch64][win] Pass oversized c-variadic args indirectly on Arm64EC)
 - rust-lang/rust#159405 (Manually implement Clone for GrowableBitSet)
 - rust-lang/rust#159415 (rustdoc: rename the doc parts metadata params)