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Revert "[ConstraintSystem] Make it possible to infer subtype bindings… #30283

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Merged
merged 2 commits into from
Mar 8, 2020

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xedin
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@xedin xedin commented Mar 8, 2020

… through argument conversions"

Reverts #30006. It caused a regression that we'd like to address before re-landing:

struct X {
  var cgf: CGFloat
}

func test(x: X?) {
  let _ = (x?.cgf ?? 0) <= 0.5
}

This reverts commit 0a6b444.
This reverts commit ed25559.
This reverts commit 3e01160.
This reverts commit 96297b7.

Resolves: rdar://problem/60185506

xedin added 2 commits March 7, 2020 20:16
… through argument conversions"

Reverts swiftlang#30006. It caused a regression that we'd like to address before re-landing:

```swift
struct X {
  var cgf: CGFloat
}

func test(x: X?) {
  let _ = (x?.cgf ?? 0) <= 0.5
}
```

This reverts commit 0a6b444.
This reverts commit ed25559.
This reverts commit 3e01160.
This reverts commit 96297b7.

Resolves: rdar://problem/60185506
@xedin
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xedin commented Mar 8, 2020

@swift-ci please smoke test

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xedin commented Mar 8, 2020

I have also added a test-case to make sure that everything works correctly.

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xedin commented Mar 8, 2020

I figured out what the problem is - while comparing bindings it check for literal kind which is in one case Float and another one Atom even though Atom has better overall bindings it's still rejected.

@xedin xedin merged commit a1987ec into swiftlang:master Mar 8, 2020
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