File: release-hoisting.swift

package info (click to toggle)
swiftlang 6.1.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,532 kB
  • sloc: cpp: 9,901,743; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (35 lines) | stat: -rw-r--r-- 769 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
// RUN: %target-swift-frontend -O -module-name=test -emit-sil %s | %FileCheck %s

protocol P {}

public struct S {
  let p: P // force S to be an address-only type
  let i: Int
}

public final class X {
  let s: S

  init(s: S) {
    self.s = s
  }
}

@inline(never)
func createX(s: S) -> X {
  return X(s: s)
}

// Test that the load is a barrier for release hoisting and that the strong_release is not hoisted above the load.

// CHECK-LABEL: sil @$s4test6testit1sSiAA1SV_tF
// CHECK:         [[X:%[0-9]+]] = apply
// CHECK:         [[R:%[0-9]+]] = load
// CHECK:         strong_release [[X]]
// CHECK:         return [[R]]
// CHECK:       } // end sil function '$s4test6testit1sSiAA1SV_tF'
public func testit(s: S) -> Int {
  let x = createX(s: s)
  return x.s.i
}