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65 lines
2.6 KiB
Swift
65 lines
2.6 KiB
Swift
// RUN: %target-swift-frontend -primary-file %s -emit-ir | %FileCheck %s
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// RUN: %target-swift-frontend -primary-file %s -O -emit-ir | %FileCheck %s --check-prefix=OPT
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// On iOS _stdlib_isOSVersionAtLeast() is @_transparent, which affects optimization.
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// See IRGen/availability.swift for other Apple platforms.
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// REQUIRES: OS=ios
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import Foundation
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// We mustn't hoist the alloc_stack for measurement out of the availability
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// guard.
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// CHECK-LABEL: define{{.*}} @{{.*}}dontHoist
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// CHECK-NOT: s10Foundation11MeasurementVySo17NSUnitTemperature
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// CHECK: call swiftcc i1 @"$ss31_stdlib_isOSVersionAtLeast_AEICyBi1_Bw_BwBwtF"(
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// CHECK: s10Foundation11MeasurementVySo17NSUnitTemperature
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// OPT-LABEL: define{{.*}} @{{.*}}dontHoist
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// OPT-NOT: S10Foundation11MeasurementVySo17NSUnitTemperature
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// OPT: call {{.*}} @__isPlatformVersionAtLeast(
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// OPT: s10Foundation11MeasurementVySo17NSUnitTemperature
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public func dontHoist() {
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if #available(macOS 51.0, iOS 54.0, watchOS 57.0, tvOS 54.0, visionOS 51.1, *) {
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let measurement = Measurement<UnitTemperature>(value: Double(42), unit: .celsius)
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print("\(measurement)")
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} else {
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print("Not measurement")
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}
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}
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// Now that _isOSVersionAtLeast is no longer inlinable, we do still
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// mark it as _effects(readnone).
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// This means that unlike in the past the optimizer can now only coalesce
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// availability checks with the same availability. It does not determine,
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// for example, that a check for iOS 10 is sufficient to guarantee that a check
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// for iOS 9 will also succeed.
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// With optimizations on, multiple #availability checks should generate only
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// a single call into _isOSVersionAtLeast, which after inlining will be a
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// call to __isPlatformVersionAtLeast.
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// CHECK-LABEL: define{{.*}} @{{.*}}multipleAvailabilityChecks
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// CHECK: call swiftcc i1 @"$ss31_stdlib_isOSVersionAtLeast_AEICyBi1_Bw_BwBwtF"(
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// CHECK: call swiftcc i1 @"$ss31_stdlib_isOSVersionAtLeast_AEICyBi1_Bw_BwBwtF"(
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// CHECK: call swiftcc i1 @"$ss31_stdlib_isOSVersionAtLeast_AEICyBi1_Bw_BwBwtF"(
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// CHECK: ret void
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// OPT-LABEL: define{{.*}} @{{.*}}multipleAvailabilityChecks
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// OPT: call {{.*}} @__isPlatformVersionAtLeast
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// OPT-NOT: call {{.*}} @$__isPlatformVersionAtLeast
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// OPT: ret void
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public func multipleAvailabilityChecks() {
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if #available(macOS 51.0, iOS 54.0, watchOS 57.0, tvOS 54.0, visionOS 51.1, *) {
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print("test one")
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}
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if #available(macOS 51.0, iOS 54.0, watchOS 57.0, tvOS 54.0, visionOS 51.1, *) {
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print("test two")
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}
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if #available(macOS 51.0, iOS 54.0, watchOS 57.0, tvOS 54.0, visionOS 51.1, *) {
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print("test three")
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}
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}
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