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|
; RUN: %swift-llvm-opt -passes=swift-llvm-arc-optimize %s | %FileCheck %s
; Use this testfile to check if the `swift-frontend -swift-dependency-tool` option works.
; RUN: %swift_frontend_plain -swift-llvm-opt -passes=swift-llvm-arc-optimize %s | %FileCheck %s
target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-macosx10.9"
%swift.refcounted = type { ptr, i64 }
%swift.heapmetadata = type { ptr, ptr }
%objc_object = type opaque
%swift.bridge = type opaque
declare ptr @swift_unknownObjectRetain(ptr returned)
declare void @swift_unknownObjectRelease(ptr)
declare ptr @llvm.objc.retain(ptr)
declare void @llvm.objc.release(ptr)
declare ptr @swift_allocObject(ptr , i64, i64) nounwind
declare void @swift_release(ptr nocapture)
declare ptr @swift_retain(ptr returned) nounwind
declare ptr @swift_bridgeObjectRetain(ptr)
declare void @swift_bridgeObjectRelease(ptr)
declare ptr @swift_retainUnowned(ptr returned)
declare void @user(ptr) nounwind
declare void @user_objc(ptr) nounwind
declare void @unknown_func()
define private void @__swift_fixLifetime(ptr) noinline nounwind {
entry:
ret void
}
; CHECK-LABEL: @trivial_objc_canonicalization(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RET1:%.+]] = tail call ptr @llvm.objc.retain(ptr [[RET0:%.+]])
; CHECK-NEXT: call void @user_objc(ptr [[RET0:%.+]])
; CHECK-NEXT: ret void
define void @trivial_objc_canonicalization(ptr %O) {
entry:
%0 = tail call ptr @llvm.objc.retain(ptr %O)
call void @user_objc(ptr %0) nounwind
ret void
}
; CHECK-LABEL: @trivial_retain_release(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @user
; CHECK-NEXT: ret void
define void @trivial_retain_release(ptr %P, ptr %O, ptr %B) {
entry:
tail call ptr @swift_retain(ptr %P)
tail call void @swift_release(ptr %P) nounwind
tail call ptr @swift_unknownObjectRetain(ptr %P)
tail call void @swift_unknownObjectRelease(ptr %P)
tail call ptr @llvm.objc.retain(ptr %O)
tail call void @llvm.objc.release(ptr %O)
%v = tail call ptr @swift_bridgeObjectRetain(ptr %B)
tail call void @swift_bridgeObjectRelease(ptr %v)
call void @user(ptr %P) nounwind
ret void
}
; CHECK-LABEL: @trivial_retain_release_with_rcidentity(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @user
; CHECK-NEXT: ret void
define void @trivial_retain_release_with_rcidentity(ptr %P, ptr %O, ptr %B) {
entry:
tail call ptr @swift_retain(ptr %P)
tail call void @swift_release(ptr %P) nounwind
tail call ptr @swift_unknownObjectRetain(ptr %P)
tail call void @swift_unknownObjectRelease(ptr %P)
tail call ptr @llvm.objc.retain(ptr %O)
tail call void @llvm.objc.release(ptr %O)
call void @user(ptr %P) nounwind
ret void
}
; retain_motion1 - This shows motion of a retain across operations that can't
; release an object. Release motion can't zap this.
; CHECK-LABEL: @retain_motion1(
; CHECK-NEXT: store i32
; CHECK-NEXT: ret void
define void @retain_motion1(ptr %A) {
tail call ptr @swift_retain(ptr %A)
store i32 42, ptr %A
tail call void @swift_release(ptr %A) nounwind
ret void
}
; rdar://11583269 - Optimize out objc_retain/release(null)
; CHECK-LABEL: @objc_retain_release_null(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret void
define void @objc_retain_release_null() {
entry:
tail call void @llvm.objc.release(ptr null) nounwind
tail call ptr @llvm.objc.retain(ptr null)
ret void
}
; CHECK-LABEL: @swiftunknown_retain_release_null(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret void
define void @swiftunknown_retain_release_null() {
entry:
tail call void @swift_unknownObjectRelease(ptr null)
tail call ptr @swift_unknownObjectRetain(ptr null) nounwind
ret void
}
; rdar://11583269 - Useless objc_retain/release optimization.
; CHECK-LABEL: @objc_retain_release_opt(
; CHECK-NEXT: store i32 42
; CHECK-NEXT: ret void
define void @objc_retain_release_opt(ptr %P, ptr %IP) {
tail call ptr @llvm.objc.retain(ptr %P) nounwind
store i32 42, ptr %IP
tail call void @llvm.objc.release(ptr %P) nounwind
ret void
}
; CHECK-LABEL: define{{( protected)?}} void @swift_fixLifetimeTest
; CHECK: swift_retain
; CHECK: swift_fixLifetime
; CHECK: swift_release
define void @swift_fixLifetimeTest(ptr %A) {
tail call ptr @swift_retain(ptr %A)
call void @user(ptr %A) nounwind
call void @__swift_fixLifetime(ptr %A)
tail call void @swift_release(ptr %A) nounwind
ret void
}
; CHECK-LABEL: @move_retain_across_unknown_retain
; CHECK-NOT: swift_retain
; CHECK: swift_unknownObjectRetain
; CHECK-NOT: swift_release
; CHECK: ret
define void @move_retain_across_unknown_retain(ptr %A, ptr %B) {
tail call ptr @swift_retain(ptr %A)
tail call ptr @swift_unknownObjectRetain(ptr %B)
tail call void @swift_release(ptr %A) nounwind
ret void
}
; CHECK-LABEL: @move_retain_across_objc_retain
; CHECK-NOT: swift_retain
; CHECK: llvm.objc.retain
; CHECK-NOT: swift_release
; CHECK: ret
define void @move_retain_across_objc_retain(ptr %A, ptr %B) {
tail call ptr @swift_retain(ptr %A)
tail call ptr @llvm.objc.retain(ptr %B)
tail call void @swift_release(ptr %A) nounwind
ret void
}
; CHECK-LABEL: @move_retain_across_load
; CHECK-NOT: swift_retain
; CHECK-NOT: swift_release
; CHECK: ret
define i32 @move_retain_across_load(ptr %A, ptr %ptr) {
tail call ptr @swift_retain(ptr %A)
%val = load i32, ptr %ptr
tail call void @swift_release(ptr %A) nounwind
ret i32 %val
}
; CHECK-LABEL: @move_retain_but_not_release_across_objc_fix_lifetime
; CHECK: call void @__swift_fixLifetime
; CHECK-NEXT: tail call ptr @swift_retain
; CHECK-NEXT: call void @user
; CHECK-NEXT: call void @__swift_fixLifetime
; CHECK-NEXT: call void @swift_release
; CHECK-NEXT: ret
define void @move_retain_but_not_release_across_objc_fix_lifetime(ptr %A) {
tail call ptr @swift_retain(ptr %A)
call void @__swift_fixLifetime(ptr %A) nounwind
call void @user(ptr %A) nounwind
call void @__swift_fixLifetime(ptr %A) nounwind
tail call void @swift_release(ptr %A) nounwind
ret void
}
; CHECK-LABEL: @optimize_retain_unowned
; CHECK-NEXT: load
; CHECK-NEXT: add
; CHECK-NEXT: load
; CHECK-NEXT: call void @swift_checkUnowned
; CHECK-NEXT: ret
define void @optimize_retain_unowned(ptr %A) {
tail call ptr @swift_retainUnowned(ptr %A)
; loads from the %A and speculatively executable instructions
%L1 = load i64, ptr %A, align 8
%R1 = add i64 %L1, 1
%L2 = load i64, ptr %A, align 8
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @dont_optimize_retain_unowned
; CHECK-NEXT: call ptr @swift_retainUnowned
; CHECK-NEXT: load
; CHECK-NEXT: load
; CHECK-NEXT: call void @swift_release
; CHECK-NEXT: ret
define void @dont_optimize_retain_unowned(ptr %A) {
tail call ptr @swift_retainUnowned(ptr %A)
%L1 = load ptr, ptr %A, align 8
; Use of a potential garbage address from a load of %A.
%L2 = load i64, ptr %L1, align 8
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @dont_optimize_retain_unowned2
; CHECK-NEXT: call ptr @swift_retainUnowned
; CHECK-NEXT: store
; CHECK-NEXT: call void @swift_release
; CHECK-NEXT: ret
define void @dont_optimize_retain_unowned2(ptr %A, ptr %B) {
tail call ptr @swift_retainUnowned(ptr %A)
; store to an unknown address
store i32 42, ptr %B
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @dont_optimize_retain_unowned3
; CHECK-NEXT: call ptr @swift_retainUnowned
; CHECK-NEXT: call void @unknown_func
; CHECK-NEXT: call void @swift_release
; CHECK-NEXT: ret
define void @dont_optimize_retain_unowned3(ptr %A) {
tail call ptr @swift_retainUnowned(ptr %A)
; call of an unknown function
call void @unknown_func()
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @dont_optimize_retain_unowned4
; CHECK-NEXT: call ptr @swift_retainUnowned
; CHECK-NEXT: call ptr @swift_retain
; CHECK-NEXT: call void @swift_release
; CHECK-NEXT: ret
define void @dont_optimize_retain_unowned4(ptr %A, ptr %B) {
tail call ptr @swift_retainUnowned(ptr %A)
; retain of an unknown reference (%B could be equal to %A)
tail call ptr @swift_retain(ptr %B)
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @remove_redundant_check_unowned
; CHECK-NEXT: load
; CHECK-NEXT: call void @swift_checkUnowned
; CHECK-NEXT: load
; CHECK-NEXT: store
; CHECK-NEXT: load
; CHECK-NEXT: ret
define void @remove_redundant_check_unowned(ptr %A, ptr %B, ptr %C) {
tail call ptr @swift_retainUnowned(ptr %A)
%L1 = load i64, ptr %A, align 8
tail call void @swift_release(ptr %A)
; Instructions which cannot do a release.
%L2 = load i64, ptr %C, align 8
store i64 42, ptr %C
tail call ptr @swift_retainUnowned(ptr %A)
%L3 = load i64, ptr %A, align 8
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @dont_remove_redundant_check_unowned
; CHECK-NEXT: load
; CHECK-NEXT: call void @swift_checkUnowned
; CHECK-NEXT: call void @unknown_func
; CHECK-NEXT: load
; CHECK-NEXT: call void @swift_checkUnowned
; CHECK-NEXT: ret
define void @dont_remove_redundant_check_unowned(ptr %A, ptr %B, ptr %C) {
tail call ptr @swift_retainUnowned(ptr %A)
%L1 = load i64, ptr %A, align 8
tail call void @swift_release(ptr %A)
; Could do a release of %A
call void @unknown_func()
tail call ptr @swift_retainUnowned(ptr %A)
%L3 = load i64, ptr %A, align 8
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @unknown_retain_promotion
; CHECK-NEXT: swift_retain
; CHECK-NEXT: swift_retain
; CHECK-NEXT: swift_retain
; CHECK-NEXT: ret
define void @unknown_retain_promotion(ptr %A) {
tail call ptr @swift_unknownObjectRetain(ptr %A)
tail call ptr @swift_unknownObjectRetain(ptr %A)
tail call ptr @swift_retain(ptr %A)
ret void
}
; CHECK-LABEL: @unknown_release_promotion
; CHECK-NEXT: swift_release
; CHECK-NEXT: swift_release
; CHECK-NEXT: swift_release
; CHECK-NEXT: ret
define void @unknown_release_promotion(ptr %A) {
tail call void @swift_unknownObjectRelease(ptr %A)
tail call void @swift_unknownObjectRelease(ptr %A)
tail call void @swift_release(ptr %A)
ret void
}
; CHECK-LABEL: @unknown_retain_nopromotion
; CHECK: bb1
; CHECK-NOT: swift_retain
; CHECK: ret
define void @unknown_retain_nopromotion(ptr %A) {
tail call ptr @swift_retain(ptr %A)
br label %bb1
bb1:
tail call ptr @swift_unknownObjectRetain(ptr %A)
ret void
}
; CHECK-LABEL: @releasemotion_forwarding
; CHECK-NOT: swift_retain
; CHECK-NOT: swift_release
; CHECK: call void @user(ptr %P)
; CHECK: ret
define void @releasemotion_forwarding(ptr %P, ptr %O, ptr %B) {
entry:
%res = tail call ptr @swift_retain(ptr %P)
tail call void @swift_release(ptr %res) nounwind
call void @user(ptr %res) nounwind
ret void
}
; CHECK-LABEL: @retainmotion_forwarding
; CHECK: store ptr %P, ptr %R, align 4
; CHECK-NOT: swift_retain
; CHECK-NOT: swift_release
; CHECK: ret
define void @retainmotion_forwarding(ptr %P, ptr %R, ptr %B) {
entry:
%res = tail call ptr @swift_retain(ptr %P)
store ptr %res, ptr %R, align 4
call void @swift_bridgeObjectRelease(ptr %B)
tail call void @swift_release(ptr %res) nounwind
ret void
}
; CHECK-LABEL: @unknownreleasemotion_forwarding
; CHECK-NOT: swift_unknownObjectRetain
; CHECK-NOT: swift_unknownObjectRelease
; CHECK: call void @user(ptr %P)
; CHECK: ret
define void @unknownreleasemotion_forwarding(ptr %P, ptr %O, ptr %B) {
entry:
%res = tail call ptr @swift_unknownObjectRetain(ptr %P)
tail call void @swift_unknownObjectRelease(ptr %res) nounwind
call void @user(ptr %res) nounwind
ret void
}
; CHECK-LABEL: @unknownretainmotion_forwarding
; CHECK: store ptr %P, ptr %R, align 4
; CHECK-NOT: swift_unknownObjectRetain
; CHECK-NOT: swift_unknownObjectRelease
; CHECK: ret
define void @unknownretainmotion_forwarding(ptr %P, ptr %R, ptr %B) {
entry:
%res = tail call ptr @swift_unknownObjectRetain(ptr %P)
store ptr %res, ptr %R, align 4
call void @swift_bridgeObjectRelease(ptr %B)
tail call void @swift_unknownObjectRelease(ptr %res) nounwind
ret void
}
!llvm.dbg.cu = !{!1}
!llvm.module.flags = !{!4}
!0 = !DILocation(line: 0, scope: !3)
!1 = distinct !DICompileUnit(language: DW_LANG_Swift, file: !2)
!2 = !DIFile(filename: "basic.swift", directory: "")
!3 = distinct !DISubprogram(name: "_", scope: !1, file: !2, type: !DISubroutineType(types: !{}))
!4 = !{i32 1, !"Debug Info Version", i32 3}
|
