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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.
60 lines
3.5 KiB
Plaintext
60 lines
3.5 KiB
Plaintext
// Round-trip parsing/printing test.
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// RUN: %target-sil-opt %s -emit-sorted-sil | %FileCheck %s --check-prefix=CHECK-SIL
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// Round-trip serialization-deserialization test.
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// RUN: %empty-directory(%t)
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// RUN: %target-sil-opt %s -emit-sib -o %t/tmp.sib -module-name main
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// RUN: %target-sil-opt %t/tmp.sib -o %t/tmp.sil -module-name main
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// NOTE(SR-12090): Workaround because import declarations are not preserved in .sib files.
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// RUN: sed -e 's/import Swift$/import Swift; import _Differentiation/' %t/tmp.sil > %t/tmp_fixed.sil
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// RUN: %target-sil-opt %t/tmp_fixed.sil -module-name main -emit-sorted-sil | %FileCheck %s --check-prefix=CHECK-SIL
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sil_stage raw
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import Swift
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import Builtin
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import _Differentiation
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sil hidden @foo : $@convention(thin) (Float, Float, Float) -> Float {
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bb0(%0 : $Float, %1 : $Float, %2 : $Float):
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return %2 : $Float
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}
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sil hidden @foo_t_wrt_0 : $@convention(thin) (Float, Float, Float) -> Float {
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bb0(%0 : $Float, %1 : $Float, %2 : $Float):
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return %2 : $Float
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}
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sil hidden @foo_t_wrt_1_2 : $@convention(thin) (Float, Float) -> (Float, Float) {
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bb0(%0 : $Float, %1 : $Float):
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%2 = tuple (%1 : $Float, %1 : $Float)
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return %2 : $(Float, Float)
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}
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sil @make_linear_func : $@convention(thin) () -> @differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float {
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bb0:
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%orig = function_ref @foo : $@convention(thin) (Float, Float, Float) -> Float
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%linear_orig = linear_function [parameters 0] %orig : $@convention(thin) (Float, Float, Float) -> Float
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%trans = function_ref @foo_t_wrt_0 : $@convention(thin) (Float, Float, Float) -> Float
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%linear_orig_with_trans = linear_function [parameters 0] %orig : $@convention(thin) (Float, Float, Float) -> Float with_transpose %trans : $@convention(thin) (Float, Float, Float) -> Float
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%extracted_orig = linear_function_extract [original] %linear_orig : $@differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float
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%extracted_trans = linear_function_extract [transpose] %linear_orig : $@differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float
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return %linear_orig_with_trans : $@differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float
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}
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// CHECK-SIL-LABEL: sil @make_linear_func : $@convention(thin) () -> @differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float {
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// CHECK-SIL: bb0:
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// CHECK-SIL: [[ORIG:%.*]] = function_ref @foo : $@convention(thin) (Float, Float, Float) -> Float
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// CHECK-SIL: [[LIN_ORIG:%.*]] = linear_function [parameters 0] [[ORIG]] : $@convention(thin) (Float, Float, Float) -> Float
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// CHECK-SIL: [[TRANS:%.*]] = function_ref @foo_t_wrt_0 : $@convention(thin) (Float, Float, Float) -> Float
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// CHECK-SIL: [[LIN_ORIG_WITH_TRANS:%.*]] = linear_function [parameters 0] [[ORIG]] : $@convention(thin) (Float, Float, Float) -> Float with_transpose [[TRANS]] : $@convention(thin) (Float, Float, Float) -> Float
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// CHECK-SIL: [[EXTRACTED_ORIG:%.*]] = linear_function_extract [original] [[LIN_ORIG]] : $@differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float
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// CHECK-SIL: [[EXTRACTED_TRANS:%.*]] = linear_function_extract [transpose] [[LIN_ORIG]] : $@differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float
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// CHECK-SIL: return [[LIN_ORIG_WITH_TRANS]] : $@differentiable(_linear) @convention(thin) (Float, @noDerivative Float, @noDerivative Float) -> Float
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// CHECK-SIL: }
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