| // RUN: %target-swift-frontend -parse-stdlib %s -emit-ir | %FileCheck %s |
| |
| import Swift |
| import _Differentiation |
| |
| struct ExamplePullbackStruct<T: Differentiable> { |
| var pb0: (T.TangentVector) -> T.TangentVector |
| } |
| |
| @_silgen_name("test_context_builtins") |
| func test_context_builtins() { |
| let pbStruct = ExamplePullbackStruct<Float>(pb0: { $0 }) |
| let context = Builtin.autoDiffCreateLinearMapContext(Builtin.sizeof(type(of: pbStruct))) |
| let topLevelSubctxAddr = Builtin.autoDiffProjectTopLevelSubcontext(context) |
| UnsafeMutableRawPointer(topLevelSubctxAddr).storeBytes(of: pbStruct, as: type(of: pbStruct)) |
| let newBuffer = Builtin.autoDiffAllocateSubcontext(context, Builtin.sizeof(type(of: pbStruct))) |
| UnsafeMutableRawPointer(newBuffer).storeBytes(of: pbStruct, as: type(of: pbStruct)) |
| } |
| |
| // CHECK-LABEL: define{{.*}}@test_context_builtins() |
| // CHECK: entry: |
| // CHECK: [[CTX:%.*]] = call swiftcc %swift.refcounted* @swift_autoDiffCreateLinearMapContext({{i[0-9]+}} {{.*}}) |
| // CEHCK: call swiftcc i8* @swift_autoDiffProjectTopLevelSubcontext(%swift.refcounted* [[CTX]]) |
| // CHECK: [[BUF:%.*]] = call swiftcc i8* @swift_autoDiffAllocateSubcontext(%swift.refcounted* [[CTX]], {{i[0-9]+}} {{.*}}) |
