[stdlib] Reinstate the FixedPointConversion tests

Author: benrimmington

stdlib/private/StdlibUnittest/OpaqueIdentityFunctions.swift

@@ -2,7 +2,7 @@
 //
 // This source file is part of the Swift.org open source project
 //
-// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
+// Copyright (c) 2014 - 2021 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception
 //
 // See https://swift.org/LICENSE.txt for license information
@@ -65,6 +65,12 @@ public func getUInt64(_ x: UInt64) -> UInt64 { return _opaqueIdentity(x) }
 @inline(never)
 public func getUInt(_ x: UInt) -> UInt { return _opaqueIdentity(x) }
 
+#if !((os(macOS) || targetEnvironment(macCatalyst)) && arch(x86_64))
+@available(macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0, *)
+@inline(never)
+public func getFloat16(_ x: Float16) -> Float16 { return _opaqueIdentity(x) }
+#endif
+
 @inline(never)
 public func getFloat32(_ x: Float32) -> Float32 { return _opaqueIdentity(x) }
 

test/stdlib/Inputs/FixedPointConversion.swift.gyb

@@ -106,8 +106,11 @@ FixedPointConversionFailure.test("${Other}To${Self}Conversion/dest=${testValue}"
 %     otherMax = int_max(bits=other_type.explicit_significand_bits, signed=False)
 %     (selfFtoIMin, selfFtoIMax) = getFtoIBounds(other_type.bits, selfBits, selfSigned)
 
-%     if Other == 'Float80':
-#if !os(Windows) && (arch(i386) || arch(x86_64))
+%     if Other == 'Float16':
+#if !((os(macOS) || targetEnvironment(macCatalyst)) && arch(x86_64))
+if #available(macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0, *) {
+%     elif Other == 'Float80':
+#if !(os(Windows) || os(Android)) && (arch(i386) || arch(x86_64))
 %     end
 
 %     testValues = [
@@ -217,7 +220,10 @@ FloatingPointConversionFailures.test("${Self}/${Other}/NaN") {
   expectNil(${Self}(exactly: get${Other}(${Other}.nan)))
 }
 
-%     if Other == 'Float80':
+%     if Other == 'Float16':
+}
+#endif
+%     elif Other == 'Float80':
 #endif
 %     end
 

validation-test/stdlib/FixedPointConversion_Debug.test-sh

@@ -6,4 +6,3 @@
 // RUN: %line-directive %t/FixedPointConversion.swift -- %target-run %t/a.out_Debug
 // REQUIRES: executable_test
 // REQUIRES: long_test
-// REQUIRES: rdar49177883

validation-test/stdlib/FixedPointConversion_Release.test-sh

@@ -6,4 +6,3 @@
 // RUN: %line-directive %t/FixedPointConversion.swift -- %target-run %t/a.out_Release
 // REQUIRES: executable_test
 // REQUIRES: long_test
-// REQUIRES: rdar49177883