Use the `%target-swift-5.1-abi-triple` substitution to compile the tests for
deployment to the minimum OS versions required for use of _Concurrency APIs,
instead of disabling availability checking.
The support for DIExpression constant folding has been added to the
Corosplit pass, this patch fixes up the swift tests that need to account
for the changes in the DIExpressions.
In https://reviews.llvm.org/D95617 LLVM stopped to emit debug values without a
location as an optimization for inlined functions. Because Swift is emitting
dbg.values(undef) for sizeless variables even at -Onone, we need to make sure
all local variables are preserved even at -Onone.
rdar://82038523
emitShadowCopyIfNeeded has some extra code that was added when function
arguments were moved out of the async context to ensure that they are being
lifetime-extended, and there is also code that generates an incorrect load from
the shadow copy. However, emitShadowCopyIfNeeded is supposed return either an
alloca or the value, and IRGenDebugInfo knows to describe the value in the
alloca already. The load is counterproductive it's only valid until whatever
register it ends up in is clobbered, whereas the alloca is valid throughout the
function.
This patch removes the load and updates the tests accordingly.
rdar://81805727
Repurpose mangling operator `Y` as an umbrella operator that covers new attributes on function types. Free up operators `J`, `j`, and `k`.
```
async ::= 'Ya' // 'async' annotation on function types
sendable ::= 'Yb' // @Sendable on function types
throws ::= 'K' // 'throws' annotation on function types
differentiable ::= 'Yjf' // @differentiable(_forward) on function type
differentiable ::= 'Yjr' // @differentiable(reverse) on function type
differentiable ::= 'Yjd' // @differentiable on function type
differentiable ::= 'Yjl' // @differentiable(_linear) on function type
```
Resolves rdar://76299796.
Most of the async runtime functions have been changed to not
expect the task and executor to be passed in. When knowing the
task and executor is necessary, there are runtime functions
available to recover them.
The biggest change I had to make to a runtime function signature
was to swift_task_switch, which has been altered to expect to be
passed the context and resumption function instead of requiring
the caller to park the task. This has the pleasant consequence
of allowing the implementation to very quickly turn around when
it recognizes that the current executor is satisfactory. It does
mean that on arm64e we have to sign the continuation function
pointer as an argument and then potentially resign it when
assigning into the task's resume slot.
rdar://70546948
Other ARM64 platforms use aarch64 as the architecture name (Android,
Linux), so the checks have to be duplicated, or the final checks of the
file will fail to find the patterns set before.
* Adds support for generating code that uses swiftasync parameter lowering.
* Currently only arm64's llvm lowering supports the swift_async_context_addr intrinsic.
* Add arm64e pointer signing of updated swift_async_context_addr.
This commit needs the PR llvm-project#2291.
* [runtime] unittests should use just-built compiler if the runtime did
This will start to matter with the introduction of usage of swiftasync parameters which only very recent compilers support.
rdar://71499498
This commit depends on changes to the coroutine-splitting pass in LLVM. Shadow
copies are also turned off for async function arguments, because they make it
impossible to track debug info during coroutine splitting. Instead we are
relying on LLVM's CoroSplit.cpp to emit shadow copies. The Swift frontend gives
CoroSplit license to move do this by describing the arguments using a
dbg.declare intrinsic, even though it points to chain of load/GEP/bitcase
instructions into the Swift context function argument.
rdar://71866936
