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revert-85403-wip-ret-rel-perf
swift-mirror/test/IRGen/yield_once_biggish.sil
Erik Eckstein 62786b01e2 Optimizer: add the mandatory destroy hoisting pass 
It hoists `destroy_value` instructions for non-lexical values.

```
  %1 = some_ownedValue
  ...
  last_use(%1)
  ... // other instructions
  destroy_value %1
```
->
```
  %1 = some_ownedValue
  ...
  last_use(%1)
  destroy_value %1    // <- moved after the last use
  ... // other instructions
```

In contrast to non-mandatory optimization passes, this is the only pass which hoists destroys over deinit-barriers.
This ensures consistent behavior in -Onone and optimized builds.
2025-11-06 21:00:44 +01:00

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// RUN: %target-swift-frontend -emit-irgen -disable-emit-type-malloc-for-coro-frame %s | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%target-ptrsize --check-prefix=CHECK-%target-ptrsize-%target-ptrauth -DINT=i%target-ptrsize
// i386 uses a scalar result count of 3 instead of 4, so this test would need
// to be substantially different to test the functionality there. It's easier
// to just rule out i386 for now. If we end up with many similar exceptions,
// we should turn this into a REQUIRES instead.
// UNSUPPORTED: CPU=i386
// UNSUPPORTED: CPU=arm64_32
import Builtin
import Swift
sil @marker : $(Builtin.Int32) -> ()
class SomeClass {}
sil_vtable SomeClass {}
class SomeSubclass : SomeClass {}
sil_vtable SomeSubclass {}
// This is designed to be small enough that we'll want to pass it directly,
// but large enough that yielding it will exceed what we can return directly.
struct Biggish<T: SomeClass> {
var a: T
var b: T
var c: T
var d: T
}
sil @make_biggish : $<T: SomeClass> () -> (@owned Biggish<T>)
// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc { ptr, ptr, ptr, ptr } @test_simple
// CHECK-32-SAME: (ptr noalias dereferenceable([[BUFFER_SIZE:16]]) %0, ptr %C)
// CHECK-64-SAME: (ptr noalias dereferenceable([[BUFFER_SIZE:32]]) %0, ptr %C)
sil [ossa] @test_simple : $@yield_once <C: SomeClass> () -> (@yields @owned Biggish<C>) {
entry:
// Allocate space for the indirect spillover.
// CHECK: [[SPILLS:%.*]] = alloca [[SPILLS_T:{ ptr, ptr }]]
// CHECK-32-SAME: , align 4
// CHECK-64-SAME: , align 8
// Coroutine setup.
// CHECK-32-NEXT: [[ID:%.*]] = call token (i32, i32, ptr, ptr, ptr, ptr, ...) @llvm.coro.id.retcon.once(i32 [[BUFFER_SIZE]], i32 [[BUFFER_ALIGN:4]], ptr %0, ptr @"$s18yield_once_biggish7BiggishVyxGAA9SomeClassCRbzlIetAYx_TC", ptr @malloc, ptr @free)
// CHECK-64-NEXT: [[ID:%.*]] = call token (i32, i32, ptr, ptr, ptr, ptr, ...) @llvm.coro.id.retcon.once(i32 [[BUFFER_SIZE]], i32 [[BUFFER_ALIGN:8]], ptr %0, ptr @"$s18yield_once_biggish7BiggishVyxGAA9SomeClassCRbzlIetAYx_TC", ptr @malloc, ptr @free)
// CHECK-NEXT: [[BEGIN:%.*]] = call ptr @llvm.coro.begin(token [[ID]], ptr null)
// CHECK-NEXT: store ptr
// CHECK-NEXT: call swiftcc void @marker(i32 1000)
%marker = function_ref @marker : $@convention(thin) (Builtin.Int32) -> ()
%1000 = integer_literal $Builtin.Int32, 1000
apply %marker(%1000) : $@convention(thin) (Builtin.Int32) -> ()
// CHECK-NEXT: [[T0:%.*]] = call swiftcc [[BIGGISH:{ ptr, ptr, ptr, ptr }]] @make_biggish(ptr %C)
// CHECK-NEXT: [[R0:%.*]] = extractvalue [[BIGGISH]] [[T0]], 0
// CHECK-NEXT: [[R1:%.*]] = extractvalue [[BIGGISH]] [[T0]], 1
// CHECK-NEXT: [[R2:%.*]] = extractvalue [[BIGGISH]] [[T0]], 2
// CHECK-NEXT: [[R3:%.*]] = extractvalue [[BIGGISH]] [[T0]], 3
%make = function_ref @make_biggish : $@convention(thin) <T: SomeClass> () -> (@owned Biggish<T>)
%value = apply %make<C>() : $@convention(thin) <T: SomeClass> () -> (@owned Biggish<T>)
// Write the spilled objects to the buffer.
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 {{.*}}, ptr [[SPILLS]])
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds{{.*}} [[SPILLS_T]], ptr [[SPILLS]], i32 0, i32 0
// CHECK-NEXT: store ptr [[R2]], ptr [[T0]]
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds{{.*}} [[SPILLS_T]], ptr [[SPILLS]], i32 0, i32 1
// CHECK-NEXT: store ptr [[R3]], ptr [[T0]]
// Suspend.
// CHECK-NEXT: [[IS_UNWIND:%.*]] = call i1 (...) @llvm.coro.suspend.retcon.i1(ptr [[R0]], ptr [[R1]], ptr [[SPILLS]])
// Clean up the spills buffer.
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 {{.*}}, ptr [[SPILLS]])
// CHECK-NEXT: br i1 [[IS_UNWIND]]
yield %value : $Biggish<C>, resume resume, unwind unwind
resume:
// CHECK: call swiftcc void @marker(i32 2000)
%2000 = integer_literal $Builtin.Int32, 2000
apply %marker(%2000) : $@convention(thin) (Builtin.Int32) -> ()
// CHECK: br label %coro.end
%ret = tuple ()
return %ret : $()
unwind:
// CHECK: call swiftcc void @marker(i32 3000)
%3000 = integer_literal $Builtin.Int32, 3000
apply %marker(%3000) : $@convention(thin) (Builtin.Int32) -> ()
// CHECK: br label %coro.end
unwind
// CHECK: coro.end:
// CHECK: call i1 @llvm.coro.end(ptr [[BEGIN]], i1 false, token none)
// CHECK-NEXT: unreachable
}
// CHECK-LABEL: declare{{( dllimport)?}}{{( protected)?}} swiftcc void @"$s18yield_once_biggish7BiggishVyxGAA9SomeClassCRbzlIetAYx_TC"
// CHECK-SAME: (ptr noalias dereferenceable([[BUFFER_SIZE]]), i1)
// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc void @test_simple_call(i1 %0)
sil [ossa] @test_simple_call : $(Builtin.Int1) -> () {
entry(%flag : $Builtin.Int1):
// Allocate the buffer.
// CHECK: [[T0:%.*]] = alloca {{\[}}[[BUFFER_SIZE]] x i8], align [[BUFFER_ALIGN]]
// CHECK-NEXT: [[BUFFER:%.*]] = getelementptr inbounds{{.*}} {{\[}}[[BUFFER_SIZE]] x i8], ptr [[T0]], i32 0, i32 0
// CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 [[BUFFER_SIZE]], ptr [[BUFFER]])
// CHECK-NEXT: [[TMP:%.*]] = call swiftcc %swift.metadata_response @"$s18yield_once_biggish12SomeSubclassCMa"([[INT]] 0)
// CHECK-NEXT: [[SUBCLASS:%.*]] = extractvalue %swift.metadata_response [[TMP]], 0
// Prepare the continuation function pointer to block analysis.
// CHECK-NEXT: [[T0:%.*]] = call ptr @llvm.coro.prepare.retcon(ptr @test_simple
// Call the function pointer.
// CHECK-NEXT: [[RAMP_RESULT:%.*]] = call swiftcc [[RAMP_RESULT_T:{ ptr, ptr, ptr, ptr }]] [[T0]](ptr noalias dereferenceable([[BUFFER_SIZE]]) [[BUFFER]], ptr [[SUBCLASS]])
// CHECK-NEXT: [[CONTINUATION:%.*]] = extractvalue [[RAMP_RESULT_T]] [[RAMP_RESULT]], 0
// CHECK-NEXT: [[R0_ORIG:%.*]] = extractvalue [[RAMP_RESULT_T]] [[RAMP_RESULT]], 1
// CHECK-NEXT: [[R1_ORIG:%.*]] = extractvalue [[RAMP_RESULT_T]] [[RAMP_RESULT]], 2
// CHECK-NEXT: [[SPILLS:%.*]] = extractvalue [[RAMP_RESULT_T]] [[RAMP_RESULT]], 3
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds{{.*}} [[SPILLS_T]], ptr [[SPILLS]], i32 0, i32 0
// CHECK-NEXT: [[R2_ORIG:%.*]] = load ptr, ptr [[T0]], align
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds{{.*}} [[SPILLS_T]], ptr [[SPILLS]], i32 0, i32 1
// CHECK-NEXT: [[R3_ORIG:%.*]] = load ptr, ptr [[T0]], align
%0 = function_ref @test_simple : $@convention(thin) @yield_once <T: SomeClass> () -> (@yields @owned Biggish<T>)
(%value, %token) = begin_apply %0<SomeSubclass>() : $@convention(thin) @yield_once <T: SomeClass> () -> (@yields @owned Biggish<T>)
// CHECK: call void @swift_release(ptr [[R0_ORIG]])
// CHECK-NEXT: call void @swift_release(ptr [[R1_ORIG]])
// CHECK-NEXT: call void @swift_release(ptr [[R2_ORIG]])
// CHECK-NEXT: call void @swift_release(ptr [[R3_ORIG]])
// Branch.
// CHECK-NEXT: br i1 %0,
cond_br %flag, yes, no
yes:
// CHECK-64-ptrauth: ptrtoint
// CHECK-64-ptrauth-NEXT: ptrauth.blend
// CHECK: call swiftcc void [[CONTINUATION]](ptr noalias dereferenceable([[BUFFER_SIZE]]) [[BUFFER]], i1 false)
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 [[BUFFER_SIZE]], ptr [[BUFFER]])
end_apply %token as $()
// CHECK-NEXT: br label
br cont
no:
// CHECK-64-ptrauth: ptrtoint
// CHECK-64-ptrauth-NEXT: ptrauth.blend
// CHECK: call swiftcc void [[CONTINUATION]](ptr noalias dereferenceable([[BUFFER_SIZE]]) [[BUFFER]], i1 true)
// CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 [[BUFFER_SIZE]], ptr [[BUFFER]])
abort_apply %token
// CHECK-NEXT: br label
br cont
cont:
destroy_value %value : $Biggish<SomeSubclass>
// CHECK: ret void
%ret = tuple ()
return %ret : $()
}
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