| // RUN: %target-swift-frontend -parse-as-library -Osize -emit-ir %s | %FileCheck %s |
| // REQUIRES: swift_stdlib_no_asserts,optimized_stdlib |
| |
| // This is an end-to-end test to ensure that the optimizer generates |
| // optimal code for UnsafeBufferPointer. |
| |
| // CHECK-LABEL: define {{.*}}testIteration |
| |
| // Check if the code contains no traps at all. |
| // CHECK-NOT: unreachable |
| public func testIteration(_ p: UnsafeBufferPointer<Int>) -> Int { |
| var s = 0 |
| |
| // Check for an optimal loop kernel |
| // CHECK: phi |
| // CHECK-NEXT: phi |
| // CHECK-NEXT: bitcast |
| // CHECK-NEXT: load |
| // CHECK-NEXT: getelementptr |
| // CHECK-NEXT: add |
| // CHECK-NEXT: icmp |
| // CHECK-NEXT: br |
| for x in p { |
| s = s &+ x |
| } |
| // CHECK-NOT: unreachable |
| // CHECK: phi |
| // CHECK-NEXT: ret |
| // CHECK-NOT: unreachable |
| return s |
| } |
| |
| // CHECK-LABEL: define {{.*}}testIsEmpty |
| // CHECK: entry: |
| // CHECK-NEXT: icmp |
| // CHECK-NEXT: ret |
| public func testIsEmpty(_ x: UnsafeBufferPointer<UInt>) -> Bool { |
| return x.isEmpty |
| } |
| |
| // CHECK-LABEL: define {{.*}}testCount |
| // CHECK: entry: |
| // CHECK-NEXT: ret |
| public func testCount(_ x: UnsafeBufferPointer<UInt>) -> Int { |
| return x.count |
| } |
| |
