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fd4828e40a
I am doing this separately from the actual change to eliminate the option to make it easier to review.
125 lines
5.7 KiB
Plaintext
125 lines
5.7 KiB
Plaintext
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// RUN: %target-swift-frontend -emit-sil -O -Xllvm -sil-fso-enable-generics=false %s | %FileCheck %s
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sil_stage raw
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import Builtin
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typealias Int = Builtin.Int32
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// rdar://problem/28945854: When a nongeneric closure was formed inside a
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// generic function, the capture promotion pass would erroneously try to
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// apply the generic caller's substitutions to the nongeneric callee, violating
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// invariants.
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// CHECK-LABEL: sil @$s14promotable_boxTf2i_n : $@convention(thin) (Builtin.Int32) -> Builtin.Int32
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sil @promotable_box : $@convention(thin) (<τ_0_0> { var τ_0_0 } <Int>) -> Int {
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entry(%b : $<τ_0_0> { var τ_0_0 } <Int>):
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%a = project_box %b : $<τ_0_0> { var τ_0_0 } <Int>, 0
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%v = load %a : $*Int
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return %v : $Int
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}
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// CHECK-LABEL: sil {{.*}}@call_promotable_box_from_generic
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// CHECK: [[F:%.*]] = function_ref @$s14promotable_boxTf2i_n
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// CHECK: partial_apply [callee_guaranteed] [[F]](
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sil @call_promotable_box_from_generic : $@convention(thin) <T> (@in T, Int) -> @owned @callee_guaranteed () -> Int {
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entry(%0 : $*T, %1 : $Int):
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destroy_addr %0 : $*T
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%f = function_ref @promotable_box : $@convention(thin) (<τ_0_0> { var τ_0_0 } <Int>) -> Int
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%b = alloc_box $<τ_0_0> { var τ_0_0 } <Int>
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%a = project_box %b : $<τ_0_0> { var τ_0_0 } <Int>, 0
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store %1 to %a : $*Int
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%k = partial_apply [callee_guaranteed] %f(%b) : $@convention(thin) (<τ_0_0> { var τ_0_0 } <Int>) -> Int
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return %k : $@callee_guaranteed () -> Int
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}
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protocol P {}
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// CHECK-LABEL: sil @$s22generic_promotable_boxTf2ni_n : $@convention(thin) <T> (@in T, Builtin.Int32) -> Builtin.Int32
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// CHECK: bb0(%0 : $*T, %1 : $Builtin.Int32):
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// CHECK-NEXT: return %1 : $Builtin.Int32
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sil @generic_promotable_box : $@convention(thin) <T> (@in T, <τ_0_0> { var τ_0_0 } <Int>) -> Int {
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entry(%0 : $*T, %b : $<τ_0_0> { var τ_0_0 } <Int>):
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%a = project_box %b : $<τ_0_0> { var τ_0_0 } <Int>, 0
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%v = load %a : $*Int
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return %v : $Int
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}
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// CHECK-LABEL: sil @call_generic_promotable_box_from_different_generic
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// CHECK: bb0(%0 : $*T, %1 : $*U, %2 : $Builtin.Int32):
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// CHECK-NEXT: destroy_addr %0 : $*T
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// CHECK-NEXT: destroy_addr %1 : $*U
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// CHECK: [[F:%.*]] = function_ref @$s22generic_promotable_boxTf2ni_n : $@convention(thin) <τ_0_0> (@in τ_0_0, Builtin.Int32) -> Builtin.Int32
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// CHECK-NEXT: [[CLOSURE:%.*]] = partial_apply [callee_guaranteed] [[F]]<U>(%2)
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// CHECK-NEXT: return [[CLOSURE]]
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sil @call_generic_promotable_box_from_different_generic : $@convention(thin) <T, U: P> (@in T, @in U, Int) -> @owned @callee_guaranteed (@in U) -> Int {
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entry(%0 : $*T, %1 : $*U, %2 : $Int):
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destroy_addr %0 : $*T
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destroy_addr %1 : $*U
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%f = function_ref @generic_promotable_box : $@convention(thin) <V> (@in V, <τ_0_0> { var τ_0_0 } <Int>) -> Int
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%b = alloc_box $<τ_0_0> { var τ_0_0 } <Int>
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%a = project_box %b : $<τ_0_0> { var τ_0_0 } <Int>, 0
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store %2 to %a : $*Int
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%k = partial_apply [callee_guaranteed] %f<U>(%b) : $@convention(thin) <V> (@in V, <τ_0_0> { var τ_0_0 } <Int>) -> Int
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return %k : $@callee_guaranteed (@in U) -> Int
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}
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enum E<X> {
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case None
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case Some(X)
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}
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struct R<T> {
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}
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// Check that the capture promotion took place and the function now
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// take argument of a type E<(R<T>) -> Builtin.Int32>, which used
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// to be a slot inside a box.
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// CHECK-LABEL: sil @$s23generic_promotable_box2Tf2nni_n : $@convention(thin) <T> (@in R<T>, @in Builtin.Int32, @owned E<(R<T>) -> Builtin.Int32>) -> ()
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// CHECK: bb0(%0 : $*R<T>, %1 : $*Builtin.Int32, %2 : $E<(R<T>) -> Builtin.Int32>):
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// CHECK-NOT: project_box
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// CHECK: switch_enum %2 : $E<(R<T>) -> Builtin.Int32>
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// CHECK-NOT: project_box
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// CHECK: } // end sil function '$s23generic_promotable_box2Tf2nni_n'
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sil @generic_promotable_box2 : $@convention(thin) <T> (@in R<T>, @in Int, <τ_0_0> { var E<(R<τ_0_0>) -> Int> } <T>) -> () {
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entry(%0: $*R<T>, %1 : $*Int, %b : $<τ_0_0> { var E< (R<τ_0_0>)->Int > } <T>):
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%a = project_box %b : $<τ_0_0> { var E<(R<τ_0_0>)->Int> } <T>, 0
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%e = load %a : $*E<(R<T>)->Int>
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switch_enum %e : $E<(R<T>)->Int>, case #E.Some!enumelt.1 : bb1, default bb2
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bb1(%f : $@callee_guaranteed (@in_guaranteed R<T>) -> @out Int):
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%t = tuple ()
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apply %f(%1, %0) : $@callee_guaranteed (@in_guaranteed R<T>) -> @out Int
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br exit
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bb2:
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br exit
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exit:
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%r = tuple ()
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return %r : $()
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}
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// Check that alloc_box was eliminated and a specialized version of the
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// closure is invoked.
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// CHECK-LABEL: sil @call_generic_promotable_box_from_different_generic2
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// CHECK: bb0(%0 : $*R<T>, %1 : $*E<(R<U>) -> Builtin.Int32>, %2 : $*Builtin.Int32):
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// CHECK: %3 = load %1 : $*E<(R<U>) -> Builtin.Int32>
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// CHECK: [[F:%.*]] = function_ref @$s23generic_promotable_box2Tf2nni_n : $@convention(thin) <τ_0_0> (@in R<τ_0_0>, @in Builtin.Int32, @owned E<(R<τ_0_0>) -> Builtin.Int32>) -> ()
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// CHECK-NEXT: [[CLOSURE:%.*]] = partial_apply [callee_guaranteed] [[F]]<U>(%2, %3)
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// CHECK-NEXT: return [[CLOSURE]]
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sil @call_generic_promotable_box_from_different_generic2 : $@convention(thin) <T, U: P> (@in R<T>, @in E<(R<U>)->Int>, @in Int) -> @owned @callee_guaranteed (@in R<U>) -> () {
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entry(%0 : $*R<T>, %1 : $*E<(R<U>)->Int>, %2 : $*Int):
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destroy_addr %0 : $*R<T>
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%f = function_ref @generic_promotable_box2 : $@convention(thin) <V> (@in R<V>, @in Int, <τ_0_0> { var E<(R<τ_0_0>)->Int> } <V>) -> ()
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%b = alloc_box $<τ_0_0> { var E<(R<τ_0_0>)->Int> } <U>
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%a = project_box %b : $<τ_0_0> { var E<(R<τ_0_0>)->Int> } <U>, 0
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copy_addr [take] %1 to [initialization] %a : $*E<(R<U>)->Int>
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%k = partial_apply [callee_guaranteed] %f<U>(%2, %b) : $@convention(thin) <V> (@in R<V>, @in Int, <τ_0_0> { var E<(R<τ_0_0>)->Int> } <V>) -> ()
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return %k : $@callee_guaranteed (@in R<U>) -> ()
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}
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