Support for Swift async function pointer compiler flags #3245
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SwiftAsync: use runtime-provided flag for extended frame if back-deploying
Introduce a new command-line flag `-swift-async-fp={auto|always|never}`
that controls how code generation sets the Swift extended async frame
info bit. There are three possibilities:
* `auto`: the default, which determines how to set the bit based on
deployment target, either statically or dynamically via
`swift_async_extendedFramePointerFlags`.
* `always`: always set the bit statically, regardless of deployment
target.
* `never`: never set the bit, regardless of deployment target.
Patch by Doug Gregor <[email protected]>
Differential Revision: https://reviews.llvm.org/D109392
Summary:
Introduce a new frontend flag `-fswift-async-fp={auto|always|never}`
that controls how code generation sets the Swift extended async frame
info bit. There are three possibilities:
* `auto`: the default, which determines how to set the bit based on
deployment target, either statically or dynamically via
`swift_async_extendedFramePointerFlags`.
* `always`: always set the bit statically, regardless of deployment
target.
* `never`: never set the bit, regardless of deployment target.
Differential Revision: https://reviews.llvm.org/D109451
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test with swiftlang/swift#39245 @swift-ci test |
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test with swiftlang/swift#39245 @swift-ci test os x |
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