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This experimental feature will be used to force the compiler to treat `Swift` runtime availability as separate from platform availability when compiling for targets that have the Swift runtime built-in.
47 lines
1.8 KiB
Swift
47 lines
1.8 KiB
Swift
// RUN: %target-swift-emit-ir %s -min-swift-runtime-version 5.0 -O -enable-experimental-feature StandaloneSwiftAvailability | %FileCheck %s
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// REQUIRES: swift_feature_StandaloneSwiftAvailability
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@_silgen_name("callMeMaybe")
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public func callMeMaybe()
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// Verify that optimized IR for "if #available(Swift X.Y, *)" is composed of a
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// call to the stdlib ABI that returns the current runtime version and an
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// integer comparison of that version and the predicate version.
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// CHECK-LABEL: define {{.*}}swiftcc void @"$s26availability_swift_runtime15testIfAvailableyyF"()
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// CHECK: [[CURRENT_VERS:%.*]] = tail call swiftcc i32 @"$sSo19_SwiftStdlibVersionasE7currentABvgZ"()
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// CHECK: [[ICMP:%.*]] = icmp {{.*}}
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// CHECK: br i1 [[ICMP]], label %[[TRUE_LABEL:.*]], label %[[FALSE_LABEL:.*]]
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// CHECK: [[TRUE_LABEL]]:
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// CHECK: call {{.*}} @callMeMaybe()
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// CHECK: [[FALSE_LABEL]]:
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// CHECK: ret void
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public func testIfAvailable() {
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if #available(Swift 6.2, *) {
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callMeMaybe()
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}
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}
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// In optimized IR multiple "if #available" checks for the same version should
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// only generate a single call to the getter for _SwiftStdlibVersion.current.
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// CHECK-LABEL: define {{.*}}swiftcc void @"$s26availability_swift_runtime23testIfAvailableMultipleyyF"()
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// CHECK: call {{.*}} @"$sSo19_SwiftStdlibVersionasE7currentABvgZ"()
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// CHECK-NOT: call {{.*}} @"$sSo19_SwiftStdlibVersionasE7currentABvgZ"()
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// CHECK: icmp
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// CHECK: call {{.*}} @callMeMaybe()
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// CHECK: call {{.*}} @callMeMaybe()
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// CHECK: call {{.*}} @callMeMaybe()
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public func testIfAvailableMultiple() {
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if #available(Swift 5.10, *) {
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callMeMaybe()
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}
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if #available(Swift 5.10, *) {
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callMeMaybe()
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}
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if #available(Swift 5.10, *) {
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callMeMaybe()
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}
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}
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