| // RUN: %target-build-swift -target arm64-apple-ios8.0 -target-cpu cyclone \ |
| // RUN: -O -S %s -parse-as-library -parse-stdlib | \ |
| // RUN: %FileCheck --check-prefix=TBI %s |
| |
| // RUN: %target-build-swift -target arm64-apple-ios7.0 -target-cpu cyclone \ |
| // RUN: -O -S %s -parse-as-library -parse-stdlib | \ |
| // RUN: %FileCheck --check-prefix=NO_TBI %s |
| |
| // REQUIRES: CPU=arm64, OS=ios |
| |
| // Verify that TBI is on by default in Swift on targets that support it. For our |
| // purposes this means iOS8.0 or later. |
| |
| import Swift |
| |
| func f(i: Int) -> Int8 { |
| let j = i & 0xff_ffff_ffff_ffff |
| // TBI-NOT: and |
| // NO_TBI: and |
| guard let p = UnsafeMutablePointer<Int8>(bitPattern: j) else { |
| // Make sure we optimize away this branch. |
| Builtin.unreachable() |
| } |
| return p[0] |
| } |
