File: issue-57527-diff-capture.swift

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (37 lines) | stat: -rw-r--r-- 1,079 bytes parent folder | download 
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
36
37
 
// RUN: %target-swift-frontend -emit-sil -verify %s

// https://github.com/apple/swift/issues/57527
// Fix assertions related to captured arguments, they should be treated
// as constants.

import _Differentiation

func outerFunc(value: inout Float) -> (Float, (Float) -> (Float, Float)) {
  
  @differentiable(reverse, wrt: param)
  func innerFunc(param: Float, other: Float) -> Float {
    value += param * other
    return value * param * 2.0
  }
  
  let valAndPullback = valueWithPullback(at: value, 2.0, of: innerFunc)
  return (value + valAndPullback.value, valAndPullback.pullback)
}

func outerFunc2(value: inout Float) -> (Float, (Float) -> Float) {

  @differentiable(reverse, wrt: param)
  func innerFunc(param: Float, other: Float) -> Float {
    value += param * other
    return value * param * 2.0
  }

  @differentiable(reverse)
  func curriedFunc(param: Float) -> Float {
    return innerFunc(param: param, other: 3.0)
  }

  let valAndPullback = valueWithPullback(at: value, of: curriedFunc)
  return (value + valAndPullback.value, valAndPullback.pullback)
}