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address_lowering_phi.sil
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// RUN: %target-sil-opt -sil-print-types -address-lowering -enable-sil-opaque-values -emit-sorted-sil -module-name Swift -sil-verify-all %s | %FileCheck %s
//
// Test the PhiStorageOptimizer within the AddressLowering pass.
import Builtin
sil_stage raw
protocol Error {}
typealias AnyObject = Builtin.AnyObject
typealias Int = Builtin.Int64
typealias Bool = Builtin.Int1
enum Optional<T> {
case none
case some(T)
}
struct S {}
struct SRef<T> {
@_hasStorage var object: AnyObject { get set }
@_hasStorage var element: T { get set }
init(object: AnyObject, element: T)
}
enum InnerEnum<T> {
case payload(T, AnyObject)
}
enum OuterEnum<T> {
case inner(InnerEnum<T>, AnyObject)
}
struct Box<T> {
var t: T
}
struct InnerStruct<T> {
var t: T
var object: AnyObject
}
struct OuterStruct<T> {
var inner: InnerStruct<T>
var object: AnyObject
}
struct Pair<T> {
var x: T
var y: T
}
sil [ossa] @getOut : $@convention(thin) <T> () -> @out T
// Test BBArgs allocation.
// No projection from incoming values. No interference.
// CHECK-LABEL: sil [ossa] @f010_testBBArgSelect : $@convention(thin) <T> () -> @out T {
// CHECK: bb0(%0 : $*T):
// CHECK: [[F:%.*]] = function_ref @getOut : $@convention(thin) <τ_0_0> () -> @out τ_0_0
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: [[GET0:%.*]] = apply [[F]]<T>(%0) : $@convention(thin) <τ_0_0> () -> @out τ_0_0
// CHECK: br bb3
// CHECK: bb2:
// CHECK: [[GET1:%.*]] = apply [[F]]<T>(%0) : $@convention(thin) <τ_0_0> () -> @out τ_0_0
// CHECK: br bb3
// CHECK: bb3:
// CHECK: %{{.*}} = tuple ()
// CHECK: return %{{.*}} : $()
// CHECK-LABEL: } // end sil function 'f010_testBBArgSelect'
sil [ossa] @f010_testBBArgSelect : $@convention(thin) <T> () -> @out T {
bb0:
%get = function_ref @getOut : $@convention(thin) <τ_0_0>() -> @out τ_0_0
cond_br undef, bb1, bb2
bb1:
%get0 = apply %get<T>() : $@convention(thin) <τ_0_0>() -> @out τ_0_0
br bb3(%get0 : $T)
bb2:
%get1 = apply %get<T>() : $@convention(thin) <τ_0_0>() -> @out τ_0_0
br bb3(%get1 : $T)
// %15
bb3(%15 : @owned $T):
return %15 : $T
}
// Double use projection without interference.
// CHECK-LABEL: sil [ossa] @f011_testBBArgSelect_useProjection : $@convention(thin) <T> () -> () {
// CHECK: [[STACK:%[^,]+]] = alloc_stack $Optional<T>
// CHECK: cond_br undef, [[RIGHT:bb[0-9]+]], [[LEFT:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: [[LEFT_ADDR:%[^,]+]] = init_enum_data_addr [[STACK]]
// CHECK: apply {{%[^,]+}}<T>([[LEFT_ADDR]])
// CHECK: inject_enum_addr [[STACK]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: [[RIGHT_ADDR:%[^,]+]] = init_enum_data_addr [[STACK]]
// CHECK: apply {{%[^,]+}}<T>([[RIGHT_ADDR]])
// CHECK: inject_enum_addr [[STACK]]
// CHECK: br [[EXIT]]
// CHECK: [[EXIT]]:
// CHECK: destroy_addr [[STACK]]
// CHECK: dealloc_stack [[STACK]]
// CHECK-LABEL: } // end sil function 'f011_testBBArgSelect_useProjection'
sil [ossa] @f011_testBBArgSelect_useProjection : $@convention(thin) <T> () -> () {
entry:
%get = function_ref @getOut : $@convention(thin) <τ_0_0>() -> @out τ_0_0
cond_br undef, left, right
left:
%left = apply %get<T>() : $@convention(thin) <T> () -> (@out T)
%forward = enum $Optional<T>, #Optional.some, %left : $T
br exit(%forward : $Optional<T>)
right:
%right = apply %get<T>() : $@convention(thin) <T> () -> (@out T)
%backward = enum $Optional<T>, #Optional.some, %right : $T
br exit(%backward : $Optional<T>)
exit(%box : @owned $Optional<T>):
destroy_value %box : $Optional<T>
%retval = tuple ()
return %retval : $()
}
// Double use projection + interference.
// CHECK-LABEL: sil [ossa] @f012_testBBArgSelect_useProjection_oneInterference : $@convention(thin) <T> () -> () {
// CHECK: [[LEFT_OUTER:%[^,]+]] = alloc_stack $Optional<T>
// CHECK: [[LEFT_ADDR:%[^,]+]] = init_enum_data_addr [[LEFT_OUTER]]
// CHECK: apply {{%[^,]+}}<T>([[LEFT_ADDR]])
// CHECK: [[PHI_ADDR:%[^,]+]] = alloc_stack $Optional<T>
// CHECK: [[RIGHT_ADDR:%[^,]+]] = init_enum_data_addr [[PHI_ADDR]]
// CHECK: apply {{%[^,]+}}<T>([[RIGHT_ADDR]])
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: destroy_addr [[LEFT_ADDR]]
// CHECK: inject_enum_addr [[PHI_ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: destroy_addr [[RIGHT_ADDR]]
// CHECK: inject_enum_addr [[LEFT_OUTER]]
// CHECK: copy_addr [take] [[LEFT_OUTER]] to [init] [[PHI_ADDR]]
// CHECK: br [[EXIT]]
// CHECK: [[EXIT]]:
// CHECK: destroy_addr [[PHI_ADDR]]
// CHECK: dealloc_stack [[PHI_ADDR]]
// CHECK: dealloc_stack [[LEFT_OUTER]]
// CHECK-LABEL: } // end sil function 'f012_testBBArgSelect_useProjection_oneInterference'
sil [ossa] @f012_testBBArgSelect_useProjection_oneInterference : $@convention(thin) <T> () -> () {
entry:
%get = function_ref @getOut : $@convention(thin) <τ_0_0>() -> @out τ_0_0
%left = apply %get<T>() : $@convention(thin) <T> () -> (@out T)
%right = apply %get<T>() : $@convention(thin) <T> () -> (@out T)
cond_br undef, left, right
left:
destroy_value %right : $T
%forward = enum $Optional<T>, #Optional.some, %left : $T
br exit(%forward : $Optional<T>)
right:
destroy_value %left : $T
%backward = enum $Optional<T>, #Optional.some, %right : $T
br exit(%backward : $Optional<T>)
exit(%box : @owned $Optional<T>):
destroy_value %box : $Optional<T>
%retval = tuple ()
return %retval : $()
}
// CHECK-LABEL: sil [ossa] @f013_testBBArgSelect_useProjections_interference : {{.*}} {
// CHECK: [[S2_ADDR:%[^,]+]] = alloc_stack $Box<T>
// CHECK: [[PHI_ADDR:%[^,]+]] = alloc_stack $Box<T>
// CHECK: [[T_ADDR:%[^,]+]] = struct_element_addr [[PHI_ADDR]] : $*Box<T>, #Box.t
// CHECK: apply undef<T>([[T_ADDR]])
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: br [[MERGE:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: [[S2_FIELD_ADDR:%[^,]+]] = struct_element_addr [[S2_ADDR]] : $*Box<T>, #Box.t
// CHECK: copy_addr [take] [[T_ADDR]] to [init] [[S2_FIELD_ADDR]]
// CHECK: copy_addr [take] [[S2_ADDR]] to [init] [[PHI_ADDR]]
// CHECK: br [[MERGE]]
// CHECK: [[MERGE]]:
// CHECK: apply undef<Box<T>>([[PHI_ADDR]])
// CHECK: destroy_addr [[PHI_ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[EXIT]]:
// CHECK: dealloc_stack [[PHI_ADDR]]
// CHECK: dealloc_stack [[S2_ADDR]]
// CHECK-LABEL: } // end sil function 'f013_testBBArgSelect_useProjections_interference'
sil [ossa] @f013_testBBArgSelect_useProjections_interference : $@convention(thin) <T> () -> () {
entry:
%t = apply undef<T>() : $@convention(thin) <T> () -> (@out T)
cond_br undef, left, right
left:
%s2 = struct $Box<T>(%t : $T)
br merge(%s2 : $Box<T>)
right:
%s = struct $Box<T>(%t : $T)
br merge(%s : $Box<T>)
merge(%tb : @owned $Box<T>):
apply undef<Box<T>>(%tb) : $@convention(thin) <T> (@in_guaranteed T) -> ()
destroy_value %tb : $Box<T>
br exit
exit:
%retval = tuple ()
return %retval : $()
}
// One projection from incoming values. One interference.
//
// CHECK-LABEL: sil [ossa] @f020_testBBArgProjectOne : $@convention(thin) <T> () -> @out T {
// CHECK: bb0(%0 : $*T):
// CHECK: [[ALLOC:%.*]] = alloc_stack $T
// CHECK: apply %{{.*}}<T>(%0) : $@convention(thin) <τ_0_0> () -> @out τ_0_0
// CHECK: apply %{{.*}}<T>([[ALLOC]]) : $@convention(thin) <τ_0_0> () -> @out τ_0_0
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: destroy_addr %0 : $*T
// CHECK: copy_addr [take] %1 to [init] %0 : $*T
// CHECK: br bb3
// CHECK: bb2:
// CHECK: destroy_addr %1 : $*T
// CHECK: br bb3
// CHECK: bb3:
// CHECK: dealloc_stack [[ALLOC]] : $*T
// CHECK: return %{{.*}} : $()
// CHECK-LABEL: } // end sil function 'f020_testBBArgProjectOne'
sil [ossa] @f020_testBBArgProjectOne : $@convention(thin) <T> () -> @out T {
bb0:
%get = function_ref @getOut : $@convention(thin) <τ_0_0>() -> @out τ_0_0
%get0 = apply %get<T>() : $@convention(thin) <τ_0_0>() -> @out τ_0_0
%get1 = apply %get<T>() : $@convention(thin) <τ_0_0>() -> @out τ_0_0
cond_br undef, bb2, bb1
bb1:
destroy_value %get0 : $T
br bb3(%get1 : $T)
bb2:
destroy_value %get1 : $T
br bb3(%get0 : $T)
bb3(%arg : @owned $T):
return %arg : $T
}
// Projection from incoming values. No interference.
// CHECK-LABEL: sil [ossa] @f030_testBBArgProjectIn : $@convention(thin) <T> (@in T, @in T) -> @out T {
// CHECK: bb0(%0 : $*T, %1 : $*T, %2 : $*T):
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: destroy_addr %2 : $*T
// CHECK: copy_addr [take] %1 to [init] %0 : $*T
// CHECK: br bb3
// CHECK: bb2:
// CHECK: destroy_addr %1 : $*T
// CHECK: copy_addr [take] %2 to [init] %0 : $*T
// CHECK: br bb3
// CHECK: bb3:
// CHECK-LABEL: } // end sil function 'f030_testBBArgProjectIn'
sil [ossa] @f030_testBBArgProjectIn : $@convention(thin) <T> (@in T, @in T) -> @out T {
bb0(%0 : @owned $T, %1 : @owned $T):
cond_br undef, bb1, bb2
bb1:
destroy_value %0 : $T
br bb3(%1 : $T)
bb2:
destroy_value %1 : $T
br bb3(%0 : $T)
bb3(%arg : @owned $T):
return %arg : $T
}
// CHECK-LABEL: sil [ossa] @f040_testInSwapOut : $@convention(thin) <T> (@in T, @in T) -> (@out T, @out T) {
// CHECK: bb0(%0 : $*T, %1 : $*T, %2 : $*T, %3 : $*T):
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: copy_addr [take] %2 to [init] %1 : $*T
// CHECK: copy_addr [take] %3 to [init] %0 : $*T
// CHECK: br bb3
// CHECK: bb2:
// CHECK: copy_addr [take] %2 to [init] %0 : $*T
// CHECK: copy_addr [take] %3 to [init] %1 : $*T
// CHECK: br bb3
// CHECK-LABEL: } // end sil function 'f040_testInSwapOut'
sil [ossa] @f040_testInSwapOut : $@convention(thin) <T> (@in T, @in T) -> (@out T, @out T) {
bb0(%0 : @owned $T, %1 : @owned $T):
cond_br undef, bb1, bb2
bb1:
br bb3(%0 : $T, %1 : $T)
bb2:
br bb3(%1 : $T, %0 : $T)
bb3(%arg0 : @owned $T, %arg1 : @owned $T):
%result = tuple (%arg0 : $T, %arg1 : $T)
return %result : $(T, T)
}
// CHECK-LABEL: sil [ossa] @f050_testCombine : $@convention(thin) <T> (@in T, @in T) -> (@out T, @out T) {
// CHECK: bb0(%0 : $*T, %1 : $*T, %2 : $*T, %3 : $*T):
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: copy_addr [take] %2 to [init] %0 : $*T
// CHECK: copy_addr [take] %3 to [init] %1 : $*T
// CHECK: br bb3
// CHECK: bb2:
// CHECK: copy_addr %2 to [init] %1 : $*T
// CHECK: destroy_addr %3 : $*T
// CHECK: copy_addr [take] %2 to [init] %0 : $*T
// CHECK: br bb3
// CHECK: bb3:
// CHECK-LABEL: } // end sil function 'f050_testCombine'
sil [ossa] @f050_testCombine : $@convention(thin) <T> (@in T, @in T) -> (@out T, @out T) {
bb0(%0 : @owned $T, %1 : @owned $T):
cond_br undef, bb2, bb1
bb1:
br bb3(%0 : $T, %1 : $T)
bb2:
%copy = copy_value %0 : $T
destroy_value %1 : $T
br bb3(%0 : $T, %copy : $T)
bb3(%arg0 : @owned $T, %arg1 : @owned $T):
%result = tuple (%arg0 : $T, %arg1 : $T)
return %result : $(T, T)
}
// Test cyclic anti-dependence on phi copies.
//
// CHECK-LABEL: sil [ossa] @f060_testInoutSwap : $@convention(thin) <T> (@inout T, @inout T) -> () {
// CHECK: bb0(%0 : $*T, %1 : $*T):
// CHECK: [[ALLOC1:%.*]] = alloc_stack $T
// CHECK: copy_addr [take] %0 to [init] [[ALLOC1]] : $*T
// CHECK: [[ALLOC0:%.*]] = alloc_stack $T
// CHECK: copy_addr [take] %1 to [init] [[ALLOC0]] : $*T
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: [[TMP:%.*]] = alloc_stack $T
// CHECK: copy_addr [take] [[ALLOC0]] to [init] [[TMP]] : $*T
// CHECK: copy_addr [take] [[ALLOC1]] to [init] [[ALLOC0]] : $*T
// CHECK: copy_addr [take] [[TMP]] to [init] [[ALLOC1]] : $*T
// CHECK: dealloc_stack [[TMP]] : $*T
// CHECK: br bb3
// CHECK: bb2:
// CHECK: br bb3
// CHECK: bb3:
// CHECK: copy_addr [take] [[ALLOC0]] to [init] %0 : $*T
// CHECK: copy_addr [take] [[ALLOC1]] to [init] %1 : $*T
// CHECK: dealloc_stack [[ALLOC0]] : $*T
// CHECK: dealloc_stack [[ALLOC1]] : $*T
// CHECK-LABEL: } // end sil function 'f060_testInoutSwap'
sil [ossa] @f060_testInoutSwap : $@convention(thin) <T> (@inout T, @inout T) -> () {
bb0(%0 : $*T, %1 : $*T):
%2 = load [take] %0 : $*T
%3 = load [take] %1 : $*T
cond_br undef, bb2, bb1
bb1:
br bb3(%2 : $T, %3 : $T)
bb2:
br bb3(%3 : $T, %2 : $T)
bb3(%phi0 : @owned $T, %phi1 : @owned $T):
store %phi0 to [init] %0 : $*T
store %phi1 to [init] %1 : $*T
%99 = tuple ()
return %99 : $()
}
// Test phi copies that project into their use.
//
// CHECK-LABEL: sil [ossa] @f070_testInoutFieldSwap : $@convention(thin) <T> (@inout SRef<T>, @inout SRef<T>) -> () {
// CHECK: bb0(%0 : $*SRef<T>, %1 : $*SRef<T>):
// CHECK: [[ALLOCA:%.*]] = alloc_stack $SRef<T>
// CHECK: [[ALLOCB:%.*]] = alloc_stack $SRef<T>
// CHECK: [[ALLOCSA:%.*]] = alloc_stack $SRef<T>
// CHECK: [[ALLOCSB:%.*]] = alloc_stack $SRef<T>
// CHECK: copy_addr [take] %0 to [init] [[ALLOCA]] : $*SRef<T>
// CHECK: copy_addr [take] %1 to [init] [[ALLOCB]] : $*SRef<T>
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: [[A1OADR:%.*]] = struct_element_addr [[ALLOCA]] : $*SRef<T>, #SRef.object
// CHECK: [[A1O:%.*]] = load [take] [[A1OADR]] : $*AnyObject
// CHECK: [[B1OADR:%.*]] = struct_element_addr [[ALLOCB]] : $*SRef<T>, #SRef.object
// CHECK: [[B1O:%.*]] = load [take] [[B1OADR]] : $*AnyObject
// CHECK: destroy_value [[B1O]] : $AnyObject
// CHECK: [[CP1:%.*]] = copy_value [[A1O]] : $AnyObject
// CHECK: [[SA1EADR:%.*]] = struct_element_addr [[ALLOCSA]] : $*SRef<T>, #SRef.element
// CHECK: [[A1EADR:%.*]] = struct_element_addr [[ALLOCA]] : $*SRef<T>, #SRef.element
// CHECK: copy_addr [take] [[A1EADR]] to [init] [[SA1EADR]] : $*T
// CHECK: [[SB1EADR:%.*]] = struct_element_addr [[ALLOCSB]] : $*SRef<T>, #SRef.element
// CHECK: [[B1EADR:%.*]] = struct_element_addr [[ALLOCB]] : $*SRef<T>, #SRef.element
// CHECK: copy_addr [take] [[B1EADR]] to [init] [[SB1EADR]] : $*T
// CHECK: br bb3([[A1O]] : $AnyObject, [[CP1]] : $AnyObject)
// CHECK: bb2:
// CHECK: [[A2OADR:%.*]] = struct_element_addr [[ALLOCA]] : $*SRef<T>, #SRef.object
// CHECK: [[A2O:%.*]] = load [take] [[A2OADR]] : $*AnyObject
// CHECK: [[B2OADR:%.*]] = struct_element_addr [[ALLOCB]] : $*SRef<T>, #SRef.object
// CHECK: [[B2O:%.*]] = load [take] [[B2OADR]] : $*AnyObject
// CHECK: destroy_value [[B2O]] : $AnyObject
// CHECK: [[CP2:%.*]] = copy_value [[A2O]] : $AnyObject
// CHECK: [[SB2EADR:%.*]] = struct_element_addr [[ALLOCSB]] : $*SRef<T>, #SRef.element
// CHECK: [[A2EADR:%.*]] = struct_element_addr [[ALLOCA]] : $*SRef<T>, #SRef.element
// CHECK: copy_addr [take] [[A2EADR]] to [init] [[SB2EADR]] : $*T
// CHECK: [[SA2EADR:%.*]] = struct_element_addr [[ALLOCSA]] : $*SRef<T>, #SRef.element
// CHECK: [[B2EADR:%.*]] = struct_element_addr [[ALLOCB]] : $*SRef<T>, #SRef.element
// CHECK: copy_addr [take] [[B2EADR]] to [init] [[SA2EADR]] : $*T
// CHECK: br bb3([[A2O]] : $AnyObject, [[CP2]] : $AnyObject)
// CHECK: bb3([[PHI0:%.*]] : @owned $AnyObject, [[PHI1:%.*]] : @owned $AnyObject):
// CHECK: [[SA3EADR:%.*]] = struct_element_addr [[ALLOCSA]] : $*SRef<T>, #SRef.object
// CHECK: store [[PHI0]] to [init] [[SA3EADR]] : $*AnyObject
// CHECK: [[SB3EADR:%.*]] = struct_element_addr [[ALLOCSB]] : $*SRef<T>, #SRef.object
// CHECK: store [[PHI1]] to [init] [[SB3EADR]] : $*AnyObject
// CHECK: copy_addr [take] [[ALLOCSA]] to [init] %0 : $*SRef<T>
// CHECK: copy_addr [take] [[ALLOCSB]] to [init] %1 : $*SRef<T>
// CHECK-LABEL: } // end sil function 'f070_testInoutFieldSwap'
sil [ossa] @f070_testInoutFieldSwap : $@convention(thin) <T> (@inout SRef<T>, @inout SRef<T>) -> () {
bb0(%0 : $*SRef<T>, %1 : $*SRef<T>):
%la = load [take] %0 : $*SRef<T>
%lb = load [take] %1 : $*SRef<T>
cond_br undef, bb2, bb1
bb1:
(%da1o, %da1e) = destructure_struct %la : $SRef<T>
(%db1o, %db1e) = destructure_struct %lb : $SRef<T>
destroy_value %db1o : $AnyObject
%ca1o = copy_value %da1o : $AnyObject
br bb3(%da1o : $AnyObject, %ca1o : $AnyObject, %da1e : $T, %db1e : $T)
bb2:
(%da2o, %da2e) = destructure_struct %la : $SRef<T>
(%db2o, %db2e) = destructure_struct %lb : $SRef<T>
destroy_value %db2o : $AnyObject
%ca2o = copy_value %da2o : $AnyObject
br bb3(%da2o : $AnyObject, %ca2o : $AnyObject, %db2e : $T, %da2e : $T)
bb3(%phio0 : @owned $AnyObject, %phio1 : @owned $AnyObject, %phie0 : @owned $T, %phie1 : @owned $T):
%sa = struct $SRef<T> (%phio0 : $AnyObject, %phie0 : $T)
%sb = struct $SRef<T> (%phio1 : $AnyObject, %phie1 : $T)
store %sa to [init] %0 : $*SRef<T>
store %sb to [init] %1 : $*SRef<T>
%99 = tuple ()
return %99 : $()
}
// CHECK-LABEL: sil [ossa] @f080_testNestedComposeEnumPhi : $@convention(thin) <T> (@in T, @in T, @owned AnyObject, @owned AnyObject) -> @out OuterEnum<T> {
// CHECK: bb0(%0 : $*OuterEnum<T>, %1 : $*T, %2 : $*T, %3 : @owned $AnyObject, %4 : @owned $AnyObject):
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: destroy_addr %2 : $*T
// CHECK: [[TUPLE1:%.*]] = init_enum_data_addr [[INNER1:%.*]] : $*InnerEnum<T>, #InnerEnum.payload!enumelt
// CHECK: [[TUPLE1_0:%.*]] = tuple_element_addr [[TUPLE1]] : $*(T, AnyObject), 0
// CHECK: copy_addr [take] %1 to [init] [[TUPLE1_0]] : $*T
// CHECK: [[TUPLE1_1:%.*]] = tuple_element_addr [[TUPLE1]] : $*(T, AnyObject), 1
// CHECK: store %3 to [init] [[TUPLE1_1]] : $*AnyObject
// CHECK: inject_enum_addr [[INNER1]] : $*InnerEnum<T>, #InnerEnum.payload!enumelt
// CHECK: br bb6
// CHECK: bb2:
// CHECK: cond_br undef, bb4, bb3
// CHECK: bb3:
// CHECK: destroy_addr %1 : $*T
// CHECK: copy_addr [take] %2 to [init] [[PHI5:%.*]] : $*T
// CHECK: br bb5
// CHECK: bb4:
// CHECK: destroy_addr %2 : $*T
// CHECK: copy_addr [take] %1 to [init] [[PHI5]] : $*T
// CHECK: br bb5
// CHECK: bb5:
// CHECK: [[TUPLE5:%.*]] = init_enum_data_addr [[INNER5:%.*]] : $*InnerEnum<T>, #InnerEnum.payload!enumelt
// CHECK: [[TUPLE5_0:%.*]] = tuple_element_addr [[TUPLE5]] : $*(T, AnyObject), 0
// CHECK: copy_addr [take] [[PHI5]] to [init] [[TUPLE5_0]] : $*T
// CHECK: [[TUPLE5_1:%.*]] = tuple_element_addr [[TUPLE5]] : $*(T, AnyObject), 1
// CHECK: store %3 to [init] [[TUPLE5_1]] : $*AnyObject
// CHECK: inject_enum_addr [[INNER5]] : $*InnerEnum<T>, #InnerEnum.payload!enumelt
// CHECK: br bb6
// CHECK: bb6:
// CHECK: [[TUPLE6:%.*]] = init_enum_data_addr %0 : $*OuterEnum<T>, #OuterEnum.inner!enumelt
// CHECK: [[TUPLE6_0:%.*]] = tuple_element_addr [[TUPLE6]] : $*(InnerEnum<T>, AnyObject), 0
// CHECK: copy_addr [take] [[INNER1]] to [init] [[TUPLE6_0]] : $*InnerEnum<T>
// CHECK: [[TUPLE6_1:%.*]] = tuple_element_addr [[TUPLE6]] : $*(InnerEnum<T>, AnyObject), 1
// CHECK: store %4 to [init] [[TUPLE6_1]] : $*AnyObject
// CHECK: inject_enum_addr %0 : $*OuterEnum<T>, #OuterEnum.inner!enumelt
// CHECK-LABEL: } // end sil function 'f080_testNestedComposeEnumPhi'
sil [ossa] @f080_testNestedComposeEnumPhi : $@convention(thin) <T> (@in T, @in T, @owned AnyObject, @owned AnyObject) -> @out OuterEnum<T> {
bb0(%0 : @owned $T, %1 : @owned $T, %2 : @owned $AnyObject, %3 : @owned $AnyObject):
cond_br undef, bb2, bb1
bb1:
destroy_value %1 : $T
%tuple1 = tuple (%0 : $T, %2 : $AnyObject)
%inner1 = enum $InnerEnum<T>, #InnerEnum.payload, %tuple1 : $(T, AnyObject)
br bb6(%inner1 : $InnerEnum<T>)
bb2:
cond_br undef, bb4, bb3
bb3:
destroy_value %0 : $T
br bb5(%1 : $T)
bb4:
destroy_value %1 : $T
br bb5(%0 : $T)
bb5(%phi5 : @owned $T):
%tuple5 = tuple (%phi5 : $T, %2 : $AnyObject)
%inner5 = enum $InnerEnum<T>, #InnerEnum.payload, %tuple5 : $(T, AnyObject)
br bb6(%inner5 : $InnerEnum<T>)
bb6(%phi6 : @owned $InnerEnum<T>):
%tuple6 = tuple (%phi6 : $InnerEnum<T>, %3 : $AnyObject)
%outer = enum $OuterEnum<T>, #OuterEnum.inner, %tuple6 : $(InnerEnum<T>, AnyObject)
return %outer : $OuterEnum<T>
}
// CHECK-LABEL: sil [ossa] @f080_testNestedComposeStructWithPhi : $@convention(thin) <T> (@in T, @in T, @owned AnyObject, @owned AnyObject) -> @out OuterStruct<T> {
// CHECK: bb0(%0 : $*OuterStruct<T>, %1 : $*T, %2 : $*T, %3 : @owned $AnyObject, %4 : @owned $AnyObject):
// CHECK-NOT: alloc
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: destroy_addr %2 : $*T
// CHECK: [[INNER1:%.*]] = struct_element_addr %0 : $*OuterStruct<T>, #OuterStruct.inner
// CHECK: [[T2:%.*]] = struct_element_addr [[INNER1]] : $*InnerStruct<T>, #InnerStruct.t
// CHECK: copy_addr [take] %1 to [init] [[T2]] : $*T
// CHECK: [[O2:%.*]] = struct_element_addr [[INNER1]] : $*InnerStruct<T>, #InnerStruct.object
// CHECK: store %3 to [init] [[O2]] : $*AnyObject
// CHECK: br bb6
// CHECK: bb2:
// CHECK: cond_br undef, bb4, bb3
// CHECK: bb3:
// CHECK: destroy_addr %1 : $*T
// CHECK: [[INNER3:%.*]] = struct_element_addr %0 : $*OuterStruct<T>, #OuterStruct.inner
// CHECK: [[T3:%.*]] = struct_element_addr [[INNER3]] : $*InnerStruct<T>, #InnerStruct.t
// CHECK: copy_addr [take] %2 to [init] [[T3]] : $*T
// CHECK: br bb5
// CHECK: bb4:
// CHECK: destroy_addr %2 : $*T
// CHECK: [[INNER4:%.*]] = struct_element_addr %0 : $*OuterStruct<T>, #OuterStruct.inner
// CHECK: [[T4:%.*]] = struct_element_addr [[INNER4]] : $*InnerStruct<T>, #InnerStruct.t
// CHECK: copy_addr [take] %1 to [init] [[T4]] : $*T
// CHECK: br bb5
// CHECK: bb5:
// CHECK: [[INNER5:%.*]] = struct_element_addr %0 : $*OuterStruct<T>, #OuterStruct.inner
// CHECK: [[O5:%.*]] = struct_element_addr [[INNER5]] : $*InnerStruct<T>, #InnerStruct.object
// CHECK: store %3 to [init] [[O5]] : $*AnyObject
// CHECK: br bb6
// CHECK: bb6:
// CHECK: [[O6:%.*]] = struct_element_addr %0 : $*OuterStruct<T>, #OuterStruct.object
// CHECK: store %4 to [init] [[O6]] : $*AnyObject
// CHECK-NOT: dealloc
// CHECK-LABEL: } // end sil function 'f080_testNestedComposeStructWithPhi'
sil [ossa] @f080_testNestedComposeStructWithPhi : $@convention(thin) <T> (@in T, @in T, @owned AnyObject, @owned AnyObject) -> @out OuterStruct<T> {
bb0(%0 : @owned $T, %1 : @owned $T, %2 : @owned $AnyObject, %3 : @owned $AnyObject):
cond_br undef, bb2, bb1
bb1:
destroy_value %1 : $T
%inner2 = struct $InnerStruct<T> (%0 : $T, %2 : $AnyObject)
br bb6(%inner2 : $InnerStruct<T>)
bb2:
cond_br undef, bb4, bb3
bb3:
destroy_value %0 : $T
br bb5(%1 : $T)
bb4:
destroy_value %1 : $T
br bb5(%0 : $T)
bb5(%phi5 : @owned $T):
%inner5 = struct $InnerStruct<T> (%phi5 : $T, %2 : $AnyObject)
br bb6(%inner5 : $InnerStruct<T>)
bb6(%phi6 : @owned $InnerStruct<T>):
%outer = struct $OuterStruct<T> (%phi6 : $InnerStruct<T>, %3 : $AnyObject)
return %outer : $OuterStruct<T>
}
// CHECK-LABEL: sil [ossa] @f090_payloadPhiOperand : $@convention(thin) <T> (@in Optional<T>, @in T) -> @out T {
// CHECK: bb0(%0 : $*T, %1 : $*Optional<T>, %2 : $*T):
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb1:
// CHECK: destroy_addr %2 : $*T
// CHECK: [[P:%.*]] = unchecked_take_enum_data_addr %1 : $*Optional<T>, #Optional.some!enumelt
// CHECK: copy_addr [take] [[P]] to [init] %0 : $*T
// CHECK: br bb3
// CHECK: bb2:
// CHECK: destroy_addr %1 : $*Optional<T>
// CHECK: copy_addr [take] %2 to [init] %0 : $*T
// CHECK: br bb3
// CHECK-LABEL: } // end sil function 'f090_payloadPhiOperand'
sil [ossa] @f090_payloadPhiOperand : $@convention(thin) <T> (@in Optional<T>, @in T) -> @out T {
bb0(%0 : @owned $Optional<T>, %1 : @owned $T):
cond_br undef, bb2, bb1
bb1:
destroy_value %1 : $T
%payload = unchecked_enum_data %0 : $Optional<T>, #Optional.some!enumelt
br bb3(%payload : $T)
bb2:
destroy_value %0 : $Optional<T>
br bb3(%1 : $T)
bb3(%phi : @owned $T):
return %phi : $T
}
// Check that the debug_value instruction that is created when deleting a load
// gets rewritten and doesn't obstruct the deletion of the phi.
// CHECK-LABEL: sil [ossa] @f100_store_phi : {{.*}} {
// CHECK: {{bb[0-9]+}}({{%[^,]+}} : $*Value):
// CHECK: [[TEMP:%[^,]+]] = alloc_stack $Value
// CHECK: [[VAR:%[^,]+]] = alloc_stack [lexical] $Value, var, name "value"
// CHECK: cond_br undef, bb2, bb1
// CHECK: bb3:
// CHECK: debug_value [[TEMP]] : $*Value, var, name "value"
// CHECK: copy_addr [take] [[TEMP]] to [init] [[VAR]]
// CHECK-LABEL: } // end sil function 'f100_store_phi'
sil [ossa] @f100_store_phi : $@convention(thin) <Value> (@in Value) -> () {
entry(%instance : @owned $Value):
%14 = alloc_stack [lexical] $Value, var, name "value"
cond_br undef, left, right
left:
br merge(%instance : $Value)
right:
br merge(%instance : $Value)
merge(%34 : @owned $Value):
store %34 to [init] %14 : $*Value
destroy_addr %14 : $*Value
dealloc_stack %14 : $*Value
%43 = tuple ()
return %43 : $()
}
// CHECK-LABEL: sil [ossa] @f105_phi_into_tuple : {{.*}} {
// CHECK: [[STORAGE:%[^,]+]] = alloc_stack $(Self, Builtin.Int1)
// CHECK: [[SELF_ADDR:%[^,]+]] = tuple_element_addr [[STORAGE]] : {{.*}}, 0
// CHECK: apply {{%[^,]+}}<Self>([[SELF_ADDR]])
// CHECK-LABEL: } // end sil function 'f105_phi_into_tuple'
sil [ossa] @f105_phi_into_tuple : $@convention(thin) <Self> () -> () {
%getOut = function_ref @getOut : $@convention(thin) <T> () -> @out T
%self = apply %getOut<Self>() : $@convention(thin) <τ_0_0> () -> @out τ_0_0
br exit(%self : $Self)
exit(%self_2 : @owned $Self):
%tuple = tuple (%self_2 : $Self, undef : $Bool)
destroy_value %tuple : $(Self, Bool)
%retval = tuple ()
return %retval : $()
}
// Check deleting the first of multiple block arguments.
// CHECK-LABEL: sil [ossa] @f110_nonfinal_argument : {{.*}} {
// CHECK: bb3({{%[^,]+}} : $S):
// CHECK-LABEL: } // end sil function 'f110_nonfinal_argument'
sil [ossa] @f110_nonfinal_argument : $@convention(thin) <T> (@in T, S) -> () {
entry(%instance : @owned $T, %s : $S):
cond_br undef, left, right
left:
br exit(%instance : $T, %s : $S)
right:
br exit(%instance : $T, %s : $S)
exit(%instance_2 : @owned $T, %s_2 : $S):
destroy_value %instance_2 : $T
%retval = tuple ()
return %retval : $()
}
// Check behavior of non-coalesceable single incoming phi.
// CHECK-LABEL: sil [ossa] @f120_single_phi_argument_forwarded_function_argument : {{.*}} {
// CHECK: bb0([[T:%[^,]+]] :
// CHECK: [[STORAGE:%[^,]+]] = alloc_stack
// CHECK: copy_addr [take] [[T]] to [init] [[STORAGE]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[EXIT]]:
// CHECK: destroy_addr [[STORAGE]]
// CHECK: dealloc_stack [[STORAGE]]
// CHECK-LABEL: } // end sil function 'f120_single_phi_argument_forwarded_function_argument'
sil [ossa]@f120_single_phi_argument_forwarded_function_argument : $@convention(thin) <T> (@in T) -> () {
entry(%t : @owned $T):
br exit(%t : $T)
exit(%t2 : @owned $T):
destroy_value %t2 : $T
%retval = tuple ()
return %retval : $()
}
// CHECK-LABEL: sil [ossa] @f121_single_phi_argument_forwarded_function_argument_returned : {{.*}} {
// CHECK: bb0([[OUT:%[^,]+]] :
// CHECK-SAME: [[IN:%[^,]+]] :
// CHECK: copy_addr [take] [[IN]] to [init] [[OUT]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[EXIT]]:
// CHECK-LABEL: } // end sil function 'f121_single_phi_argument_forwarded_function_argument_returned'
sil [ossa]@f121_single_phi_argument_forwarded_function_argument_returned : $@convention(thin) <T> (@in T) -> @out T {
entry(%t : @owned $T):
br exit(%t : $T)
exit(%t2 : @owned $T):
return %t2 : $T
}
// CHECK-LABEL: sil [ossa] @f122_single_phi_argument_destructure : $@convention(thin) <T> () -> () {
// CHECK: [[PHI_ADDR:%[^,]+]] = alloc_stack $T
// CHECK: [[BOX_ADDR:%[^,]+]] = alloc_stack $Box<T>
// CHECK: apply undef<T>([[BOX_ADDR]])
// CHECK: [[T_ADDR:%[^,]+]] = struct_element_addr [[BOX_ADDR]] : $*Box<T>, #Box.t
// CHECK: copy_addr [take] [[T_ADDR]] to [init] [[PHI_ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[EXIT]]:
// CHECK: destroy_addr [[PHI_ADDR]]
// CHECK: dealloc_stack [[BOX_ADDR]]
// CHECK: dealloc_stack [[PHI_ADDR]]
// CHECK-LABEL: } // end sil function 'f122_single_phi_argument_destructure'
sil [ossa]@f122_single_phi_argument_destructure : $@convention(thin) <T> () -> () {
entry:
%box = apply undef<T>() : $@convention(thin) <T> () -> (@out Box<T>)
%t = destructure_struct %box : $Box<T>
br exit(%t : $T)
exit(%t2 : @owned $T):
destroy_value %t2 : $T
%retval = tuple ()
return %retval : $()
}
// CHECK-LABEL: sil [ossa] @f130_single_phi_use_of_phi {{.*}} {
// CHECK: [[ADDR:%[^,]+]] = alloc_stack $Box<T>
// CHECK: [[T_ADDR:%[^,]+]] = struct_element_addr [[ADDR]] : $*Box<T>, #Box.t
// CHECK: apply undef<T>([[T_ADDR]])
// CHECK: br [[FAKE_MERGE1:bb[0-9]+]]
// CHECK: [[FAKE_MERGE1]]:
// CHECK: [[T_ADDR_2:%[^,]+]] = struct_element_addr [[ADDR]] : $*Box<T>, #Box.t
// CHECK: apply undef<T>([[T_ADDR_2]])
// CHECK: br [[FAKE_MERGE2:bb[0-9]+]]
// CHECK: [[FAKE_MERGE2]]:
// CHECK: apply undef<Box<T>>([[ADDR]])
// CHECK: destroy_addr [[ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[EXIT]]:
// CHECK: dealloc_stack [[ADDR]]
// CHECK-LABEL: } // end sil function 'f130_single_phi_use_of_phi'
sil [ossa] @f130_single_phi_use_of_phi : $@convention(thin) <T> () -> () {
entry:
%t = apply undef<T>() : $@convention(thin) <T> () -> (@out T)
br fakeMerge1(%t : $T)
fakeMerge1(%tp : @owned $T):
apply undef<T>(%tp) : $@convention(thin) <T> (@in_guaranteed T) -> ()
%box = struct $Box<T>(%tp : $T)
br fakeMerge2(%box : $Box<T>)
fakeMerge2(%boxp : @owned $Box<T>):
apply undef<Box<T>>(%boxp) : $@convention(thin) <T> (@in_guaranteed T) -> ()
destroy_value %boxp : $Box<T>
br exit
exit:
%retval = tuple ()
return %retval : $()
}
// CHECK-LABEL: sil [ossa] @f131_single_phi_use_of_phi_interference : {{.*}} {
// CHECK: [[BOXP_ADDR:%[^,]+]] = alloc_stack $Box<T>
// CHECK: [[T_ADDR:%[^,]+]] = struct_element_addr [[BOXP_ADDR]] : $*Box<T>, #Box.t
// CHECK: apply undef<T>([[T_ADDR]])
// CHECK: br [[FAKE_MERGE:bb[0-9]+]]
// CHECK: [[FAKE_MERGE]]:
// CHECK: [[T_ADDR_2:%[^,]+]] = struct_element_addr [[BOXP_ADDR]] : $*Box<T>, #Box.t
// CHECK: apply undef<T>([[T_ADDR_2]])
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: [[BOX_2_ADDR:%[^,]+]] = alloc_stack $Box<T>
// CHECK: apply undef<Box<T>>([[BOX_2_ADDR]])
// CHECK: destroy_addr [[BOXP_ADDR]]
// CHECK: copy_addr [take] [[BOX_2_ADDR]] to [init] [[BOXP_ADDR]]
// CHECK: dealloc_stack [[BOX_2_ADDR]]
// CHECK: br [[MERGE:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: br [[MERGE]]
// CHECK: [[MERGE]]:
// CHECK: apply undef<Box<T>>([[BOXP_ADDR]])
// CHECK: destroy_addr [[BOXP_ADDR]]
// CHECK: dealloc_stack [[BOXP_ADDR]]
// CHECK-LABEL: } // end sil function 'f131_single_phi_use_of_phi_interference'
sil [ossa] @f131_single_phi_use_of_phi_interference : $@convention(thin) <T> () -> () {
entry:
%t = apply undef<T>() : $@convention(thin) <T> () -> (@out T)
br fakeMerge1(%t : $T)
fakeMerge1(%tp : @owned $T):
apply undef<T>(%tp) : $@convention(thin) <T> (@in_guaranteed T) -> ()
%box = struct $Box<T>(%tp : $T)
cond_br undef, left, right
right:
%box2 = apply undef<Box<T>>() : $@convention(thin) <T> () -> (@out T)
destroy_value %box : $Box<T>
br merge2(%box2 : $Box<T>)
left:
br merge2(%box : $Box<T>)
merge2(%boxp : @owned $Box<T>):
apply undef<Box<T>>(%boxp) : $@convention(thin) <T> (@in_guaranteed T) -> ()
destroy_value %boxp : $Box<T>
%retval = tuple ()
return %retval : $()
}
// CHECK-LABEL: sil [ossa] @f140_interfering_use_projection : {{.*}} {
// CHECK: [[S2_ADDR:%[^,]+]] = alloc_stack $Pair<T>
// CHECK: [[T2_ADDR:%[^,]+]] = struct_element_addr [[S2_ADDR]] : $*Pair<T>, #Pair.y
// CHECK: apply undef<T>([[T2_ADDR]])
// CHECK: [[PHI_ADDR:%[^,]+]] = alloc_stack $Pair<T>
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: apply undef<Pair<T>>([[PHI_ADDR]])
// CHECK: destroy_addr [[T2_ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: [[T1_ADDR:%[^,]+]] = struct_element_addr [[S2_ADDR]] : $*Pair<T>, #Pair.x
// CHECK: apply undef<T>([[T1_ADDR]])
// CHECK: copy_addr [take] [[S2_ADDR]] to [init] [[PHI_ADDR]]
// CHECK: br [[EXIT]]
// CHECK: [[EXIT]]:
// CHECK: destroy_addr [[PHI_ADDR]]
// CHECK: dealloc_stack [[PHI_ADDR]]
// CHECK: dealloc_stack [[S2_ADDR]]
// CHECK-LABEL: } // end sil function 'f140_interfering_use_projection'
sil [ossa] @f140_interfering_use_projection : $@convention(thin) <T> () -> () {
entry:
%t2 = apply undef<T>() : $@convention(thin) <T> () -> (@out T)
cond_br undef, left, right
left:
%t1 = apply undef<T>() : $@convention(thin) <T> () -> (@out T)
%s2 = struct $Pair<T>(%t1 : $T, %t2 : $T)
br merge(%s2 : $Pair<T>)
right:
%s1 = apply undef<Pair<T>>() : $@convention(thin) <T> () -> (@out T)
destroy_value %t2 : $T
br merge(%s1 : $Pair<T>)
merge(%sp : @owned $Pair<T>):
destroy_value %sp : $Pair<T>
%retval = tuple ()
return %retval : $()
}
// Incoming value is the root of a chain of projections:
// storage <- use <- use <- def
// ^^^ ^^^ ^^^
// %s projects out of %s2's storage
// ^^^ ^^^
// %box projects out of %s's storage
// ^^^
// %t projects out of %box's storage
// There is no interference (and only one incoming phi.)
// CHECK-LABEL: sil [ossa] @f150_incoming_use_use_def_no_interference : {{.*}} {
// CHECK: [[PHI_ADDR:%[^,]+]] = alloc_stack $Box<Box<Box<T>>>
// CHECK: [[S_ADDR:%[^,]+]] = struct_element_addr [[PHI_ADDR]] : $*Box<Box<Box<T>>>, #Box.t
// CHECK: [[BOX_ADDR:%[^,]+]] = struct_element_addr [[S_ADDR]] : $*Box<Box<T>>, #Box.t
// CHECK: apply undef<Box<T>>([[BOX_ADDR]])
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: br [[FAKE_MERGE:bb[0-9]+]]
// CHECK: [[FAKE_MERGE]]:
// CHECK: apply undef<Box<Box<Box<T>>>>([[PHI_ADDR]])
// CHECK: destroy_addr [[PHI_ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: [[T_ADDR:%[^,]+]] = struct_element_addr [[BOX_ADDR]] : $*Box<T>, #Box.t
// CHECK: destroy_addr [[T_ADDR]]
// CHECK: br [[EXIT]]
// CHECK: [[EXIT]]:
// CHECK: dealloc_stack [[PHI_ADDR]]
// CHECK-LABEL: } // end sil function 'f150_incoming_use_use_def_no_interference'
sil [ossa] @f150_incoming_use_use_def_no_interference : $@convention(thin) <T> () -> () {
entry:
%box = apply undef<Box<T>>() : $@convention(thin) <T> () -> (@out T)
cond_br undef, left, right
left:
%t = destructure_struct %box : $Box<T>
destroy_value %t : $T
br exit
right:
%s = struct $Box<Box<T>>(%box : $Box<T>)
%s2 = struct $Box<Box<Box<T>>>(%s : $Box<Box<T>>)
br fakeMerge(%s2 : $Box<Box<Box<T>>>)
fakeMerge(%tb : @owned $Box<Box<Box<T>>>):
apply undef<Box<Box<Box<T>>>>(%tb) : $@convention(thin) <T> (@in_guaranteed T) -> ()
destroy_value %tb : $Box<Box<Box<T>>>
br exit
exit:
%retval = tuple ()
return %retval : $()
}
// Incoming value is the root of a chain of projections:
// storage <- use <- use <- def
// ^^^ ^^^ ^^^
// %s projects out of %s2's storage
// ^^^ ^^^
// %box projects out of %s's storage
// ^^^
// %t projects out of %box's storage
// There is interference of the _def_ projection (which can only be detected by
// adding its uses to liveness:
// %t is destroyed in ^left2
// %s3 is defined in ^left2
// TODO: When doing per-instruction rather than per-block liveness, this test
// will no longer have interference. At that point, move the
// destroy_value %t below the subsequent apply to reintroduce interference
// and duplicate this test.
// CHECK-LABEL: sil [ossa] @f160_incoming_use_use_def_interference : {{.*}} {
// CHECK: [[PHI_ADDR:%[^,]+]] = alloc_stack $Box<Box<Box<T>>>
// CHECK: [[S_ADDR:%[^,]+]] = struct_element_addr [[PHI_ADDR]] : $*Box<Box<Box<T>>>, #Box.t
// CHECK: [[BOX_ADDR:%[^,]+]] = struct_element_addr [[S_ADDR]] : $*Box<Box<T>>, #Box.t
// CHECK: apply undef<Box<T>>([[BOX_ADDR]])
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: br [[MERGE:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: br [[LEFT2:bb[0-9]+]]
// CHECK: [[LEFT2]]:
// CHECK: [[S3_ADDR:%[^,]+]] = alloc_stack $Box<Box<Box<T>>>
// CHECK: [[T_ADDR:%[^,]+]] = struct_element_addr [[BOX_ADDR]] : $*Box<T>, #Box.t
// CHECK: destroy_addr [[T_ADDR]]
// CHECK: apply undef<Box<Box<Box<T>>>>([[S3_ADDR]])
// CHECK: copy_addr [take] [[S3_ADDR]] to [init] [[PHI_ADDR]] : $*Box<Box<Box<T>>>
// CHECK: dealloc_stack [[S3_ADDR]]
// CHECK: br [[MERGE:bb[0-9]+]]
// CHECK: [[MERGE]]:
// CHECK: apply undef<Box<Box<Box<T>>>>([[PHI_ADDR]])
// CHECK: destroy_addr [[PHI_ADDR]]
// CHECK: dealloc_stack [[PHI_ADDR]]
// CHECK-LABEL: } // end sil function 'f160_incoming_use_use_def_interference'
sil [ossa] @f160_incoming_use_use_def_interference : $@convention(thin) <T> () -> () {
entry:
%box = apply undef<Box<T>>() : $@convention(thin) <T> () -> (@out T)
cond_br undef, left, right
left:
%t = destructure_struct %box : $Box<T>
br left2
left2:
destroy_value %t : $T
%s3 = apply undef<Box<Box<Box<T>>>>() : $@convention(thin) <T> () -> (@out T)
br merge(%s3 : $Box<Box<Box<T>>>)
right:
%s = struct $Box<Box<T>>(%box : $Box<T>)
%s2 = struct $Box<Box<Box<T>>>(%s : $Box<Box<T>>)
br merge(%s2 : $Box<Box<Box<T>>>)
merge(%tb : @owned $Box<Box<Box<T>>>):
apply undef<Box<Box<Box<T>>>>(%tb) : $@convention(thin) <T> (@in_guaranteed T) -> ()
destroy_value %tb : $Box<Box<Box<T>>>
%retval = tuple ()
return %retval : $()
}
// Incoming phi.
// TODO: Coalesce in this case.
// CHECK-LABEL: sil [ossa] @f170_incoming_phi_no_interference : {{.*}} {
// CHECK: [[T_ADDR:%[^,]+]] = alloc_stack $T
// CHECK: apply undef<T>([[T_ADDR]])
// CHECK: cond_br undef, [[LEFT:bb[0-9]+]], [[RIGHT:bb[0-9]+]]
// CHECK: [[RIGHT]]:
// CHECK: br [[FAKE_MERGE_1:bb[0-9]+]]
// CHECK: [[FAKE_MERGE_1]]:
// CHECK: [[TP_ADDR:%[^,]+]] = alloc_stack $T
// CHECK: apply undef<T>([[T_ADDR]])
// CHECK: copy_addr [take] [[T_ADDR]] to [init] [[TP_ADDR]]
// CHECK: br [[FAKE_MERGE_2:bb[0-9]+]]
// CHECK: [[FAKE_MERGE_2]]:
// CHECK: apply undef<T>([[TP_ADDR]])
// CHECK: destroy_addr [[TP_ADDR]]
// CHECK: dealloc_stack [[TP_ADDR]]
// CHECK: br [[EXIT:bb[0-9]+]]
// CHECK: [[LEFT]]:
// CHECK: destroy_addr [[T_ADDR]]
// CHECK: br [[EXIT]]
// CHECK: [[EXIT]]:
// CHECK: dealloc_stack [[T_ADDR]]
// CHECK-LABEL: } // end sil function 'f170_incoming_phi_no_interference'
sil [ossa] @f170_incoming_phi_no_interference : $@convention(thin) <T> () -> () {
entry:
%t = apply undef<T>() : $@convention(thin) <T> () -> (@out T)