mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
af8942d940
Compiler: - Add `Forward` and `Reverse` to `DifferentiabilityKind`. - Expand `DifferentiabilityMask` in `ExtInfo` to 3 bits so that it now holds all 4 cases of `DifferentiabilityKind`. - Parse `@differentiable(reverse)` and `@differentiable(_forward)` declaration attributes and type attributes. - Emit a warning for `@differentiable` without `reverse`. - Emit an error for `@differentiable(_forward)`. - Rename `@differentiable(linear)` to `@differentiable(_linear)`. - Make `@differentiable(reverse)` type lowering go through today's `@differentiable` code path. We will specialize it to reverse-mode in a follow-up patch. ABI: - Add `Forward` and `Reverse` to `FunctionMetadataDifferentiabilityKind`. - Extend `TargetFunctionTypeFlags` by 1 bit to store the highest bit of differentiability kind (linear). Note that there is a 2-bit gap in `DifferentiabilityMask` which is reserved for `AsyncMask` and `ConcurrentMask`; `AsyncMask` is ABI-stable so we cannot change that. _Differentiation module: - Replace all occurrences of `@differentiable` with `@differentiable(reverse)`. - Delete `_transpose(of:)`. Resolves rdar://69980056.
38 lines
2.3 KiB
Swift
38 lines
2.3 KiB
Swift
// RUN: %target-swift-frontend -emit-silgen %s
|
|
|
|
// TF-1180: SIL verification error regarding `@differentiable` class method
|
|
// witnesses for `@differentiable` protocol requirements.
|
|
|
|
import _Differentiation
|
|
|
|
protocol Protocol {
|
|
@differentiable(reverse)
|
|
func method(_ x: Float) -> Float
|
|
}
|
|
|
|
class Class: Protocol {
|
|
@differentiable(reverse)
|
|
public func method(_ x: Float) -> Float { x }
|
|
}
|
|
|
|
// Original error:
|
|
// SIL verification failed: method does not appear in the class's vtable: VerifyClassMethodVisitor(member).Seen
|
|
// Verifying instruction:
|
|
// %2 = load_borrow %1 : $*Class // users: %8, %4, %3
|
|
// -> %3 = class_method %2 : $Class, #Class.method!jvp.SU.<Self where Self : Protocol> : (Class) -> (Float) -> Float, $@convention(method) (Float, @guaranteed Class) -> (Float, @owned @callee_guaranteed (Float) -> Float) // user: %4
|
|
// %4 = apply %3(%0, %2) : $@convention(method) (Float, @guaranteed Class) -> (Float, @owned @callee_guaranteed (Float) -> Float) // user: %5
|
|
// In function:
|
|
// // AD__$s4main5ClassCAA8ProtocolA2aDP6methodyS2fFTW_jvp_SU
|
|
// sil private [transparent] [thunk] [ossa] @AD__$s4main5ClassCAA8ProtocolA2aDP6methodyS2fFTW_jvp_SU : $@convention(witness_method: Protocol) (Float, @in_guaranteed Class) -> (Float, @owned @callee_guaranteed (Float) -> Float) {
|
|
// // %0 // user: %4
|
|
// // %1 // user: %2
|
|
// bb0(%0 : $Float, %1 : $*Class):
|
|
// %2 = load_borrow %1 : $*Class // users: %8, %4, %3
|
|
// %3 = class_method %2 : $Class, #Class.method!jvp.SU.<Self where Self : Protocol> : (Class) -> (Float) -> Float, $@convention(method) (Float, @guaranteed Class) -> (Float, @owned @callee_guaranteed (Float) -> Float) // user: %4
|
|
// %4 = apply %3(%0, %2) : $@convention(method) (Float, @guaranteed Class) -> (Float, @owned @callee_guaranteed (Float) -> Float) // user: %5
|
|
// (%5, %6) = destructure_tuple %4 : $(Float, @callee_guaranteed (Float) -> Float) // users: %7, %7
|
|
// %7 = tuple (%5 : $Float, %6 : $@callee_guaranteed (Float) -> Float) // user: %9
|
|
// end_borrow %2 : $Class // id: %8
|
|
// return %7 : $(Float, @callee_guaranteed (Float) -> Float) // id: %9
|
|
// } // end sil function 'AD__$s4main5ClassCAA8ProtocolA2aDP6methodyS2fFTW_jvp_SU'
|