mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
419 lines
12 KiB
LLVM
419 lines
12 KiB
LLVM
; RUN: %swift-llvm-opt -passes=swift-llvm-arc-optimize %s | %FileCheck %s
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; Use this testfile to check if the `swift-frontend -swift-dependency-tool` option works.
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; RUN: %swift_frontend_plain -swift-llvm-opt -passes=swift-llvm-arc-optimize %s | %FileCheck %s
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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"
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target triple = "x86_64-apple-macosx10.9"
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%swift.refcounted = type { ptr, i64 }
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%swift.heapmetadata = type { ptr, ptr }
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%objc_object = type opaque
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%swift.bridge = type opaque
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declare ptr @swift_unknownObjectRetain(ptr returned)
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declare void @swift_unknownObjectRelease(ptr)
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declare ptr @llvm.objc.retain(ptr)
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declare void @llvm.objc.release(ptr)
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declare ptr @swift_allocObject(ptr , i64, i64) nounwind
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declare void @swift_release(ptr nocapture)
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declare ptr @swift_retain(ptr returned) nounwind
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declare ptr @swift_bridgeObjectRetain(ptr)
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declare void @swift_bridgeObjectRelease(ptr)
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declare ptr @swift_retainUnowned(ptr returned)
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declare void @user(ptr) nounwind
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declare void @user_objc(ptr) nounwind
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declare void @unknown_func()
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define private void @__swift_fixLifetime(ptr) noinline nounwind {
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entry:
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ret void
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}
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; CHECK-LABEL: @trivial_objc_canonicalization(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[RET1:%.+]] = tail call ptr @llvm.objc.retain(ptr [[RET0:%.+]])
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; CHECK-NEXT: call void @user_objc(ptr [[RET0:%.+]])
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; CHECK-NEXT: ret void
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define void @trivial_objc_canonicalization(ptr %O) {
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entry:
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%0 = tail call ptr @llvm.objc.retain(ptr %O)
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call void @user_objc(ptr %0) nounwind
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ret void
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}
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; CHECK-LABEL: @trivial_retain_release(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @user
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; CHECK-NEXT: ret void
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define void @trivial_retain_release(ptr %P, ptr %O, ptr %B) {
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entry:
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tail call ptr @swift_retain(ptr %P)
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tail call void @swift_release(ptr %P) nounwind
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tail call ptr @swift_unknownObjectRetain(ptr %P)
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tail call void @swift_unknownObjectRelease(ptr %P)
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tail call ptr @llvm.objc.retain(ptr %O)
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tail call void @llvm.objc.release(ptr %O)
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%v = tail call ptr @swift_bridgeObjectRetain(ptr %B)
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tail call void @swift_bridgeObjectRelease(ptr %v)
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call void @user(ptr %P) nounwind
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ret void
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}
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; CHECK-LABEL: @trivial_retain_release_with_rcidentity(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @user
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; CHECK-NEXT: ret void
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define void @trivial_retain_release_with_rcidentity(ptr %P, ptr %O, ptr %B) {
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entry:
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tail call ptr @swift_retain(ptr %P)
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tail call void @swift_release(ptr %P) nounwind
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tail call ptr @swift_unknownObjectRetain(ptr %P)
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tail call void @swift_unknownObjectRelease(ptr %P)
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tail call ptr @llvm.objc.retain(ptr %O)
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tail call void @llvm.objc.release(ptr %O)
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call void @user(ptr %P) nounwind
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ret void
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}
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; retain_motion1 - This shows motion of a retain across operations that can't
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; release an object. Release motion can't zap this.
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; CHECK-LABEL: @retain_motion1(
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; CHECK-NEXT: store i32
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; CHECK-NEXT: ret void
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define void @retain_motion1(ptr %A) {
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tail call ptr @swift_retain(ptr %A)
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store i32 42, ptr %A
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tail call void @swift_release(ptr %A) nounwind
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ret void
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}
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; rdar://11583269 - Optimize out objc_retain/release(null)
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; CHECK-LABEL: @objc_retain_release_null(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret void
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define void @objc_retain_release_null() {
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entry:
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tail call void @llvm.objc.release(ptr null) nounwind
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tail call ptr @llvm.objc.retain(ptr null)
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ret void
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}
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; CHECK-LABEL: @swiftunknown_retain_release_null(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret void
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define void @swiftunknown_retain_release_null() {
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entry:
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tail call void @swift_unknownObjectRelease(ptr null)
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tail call ptr @swift_unknownObjectRetain(ptr null) nounwind
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ret void
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}
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; rdar://11583269 - Useless objc_retain/release optimization.
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; CHECK-LABEL: @objc_retain_release_opt(
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; CHECK-NEXT: store i32 42
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; CHECK-NEXT: ret void
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define void @objc_retain_release_opt(ptr %P, ptr %IP) {
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tail call ptr @llvm.objc.retain(ptr %P) nounwind
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store i32 42, ptr %IP
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tail call void @llvm.objc.release(ptr %P) nounwind
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ret void
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}
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; CHECK-LABEL: define{{( protected)?}} void @swift_fixLifetimeTest
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; CHECK: swift_retain
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; CHECK: swift_fixLifetime
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; CHECK: swift_release
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define void @swift_fixLifetimeTest(ptr %A) {
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tail call ptr @swift_retain(ptr %A)
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call void @user(ptr %A) nounwind
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call void @__swift_fixLifetime(ptr %A)
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tail call void @swift_release(ptr %A) nounwind
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ret void
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}
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; CHECK-LABEL: @move_retain_across_unknown_retain
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; CHECK-NOT: swift_retain
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; CHECK: swift_unknownObjectRetain
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; CHECK-NOT: swift_release
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; CHECK: ret
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define void @move_retain_across_unknown_retain(ptr %A, ptr %B) {
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tail call ptr @swift_retain(ptr %A)
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tail call ptr @swift_unknownObjectRetain(ptr %B)
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tail call void @swift_release(ptr %A) nounwind
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ret void
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}
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; CHECK-LABEL: @move_retain_across_objc_retain
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; CHECK-NOT: swift_retain
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; CHECK: llvm.objc.retain
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; CHECK-NOT: swift_release
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; CHECK: ret
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define void @move_retain_across_objc_retain(ptr %A, ptr %B) {
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tail call ptr @swift_retain(ptr %A)
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tail call ptr @llvm.objc.retain(ptr %B)
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tail call void @swift_release(ptr %A) nounwind
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ret void
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}
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; CHECK-LABEL: @move_retain_across_load
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; CHECK-NOT: swift_retain
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; CHECK-NOT: swift_release
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; CHECK: ret
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define i32 @move_retain_across_load(ptr %A, ptr %ptr) {
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tail call ptr @swift_retain(ptr %A)
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%val = load i32, ptr %ptr
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tail call void @swift_release(ptr %A) nounwind
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ret i32 %val
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}
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; CHECK-LABEL: @move_retain_but_not_release_across_objc_fix_lifetime
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; CHECK: call void @__swift_fixLifetime
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; CHECK-NEXT: tail call ptr @swift_retain
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; CHECK-NEXT: call void @user
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; CHECK-NEXT: call void @__swift_fixLifetime
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; CHECK-NEXT: call void @swift_release
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; CHECK-NEXT: ret
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define void @move_retain_but_not_release_across_objc_fix_lifetime(ptr %A) {
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tail call ptr @swift_retain(ptr %A)
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call void @__swift_fixLifetime(ptr %A) nounwind
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call void @user(ptr %A) nounwind
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call void @__swift_fixLifetime(ptr %A) nounwind
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tail call void @swift_release(ptr %A) nounwind
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ret void
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}
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; CHECK-LABEL: @optimize_retain_unowned
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; CHECK-NEXT: load
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; CHECK-NEXT: add
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; CHECK-NEXT: load
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; CHECK-NEXT: call void @swift_checkUnowned
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; CHECK-NEXT: ret
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define void @optimize_retain_unowned(ptr %A) {
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tail call ptr @swift_retainUnowned(ptr %A)
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; loads from the %A and speculatively executable instructions
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%L1 = load i64, ptr %A, align 8
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%R1 = add i64 %L1, 1
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%L2 = load i64, ptr %A, align 8
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @dont_optimize_retain_unowned
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; CHECK-NEXT: call ptr @swift_retainUnowned
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; CHECK-NEXT: load
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; CHECK-NEXT: load
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; CHECK-NEXT: call void @swift_release
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; CHECK-NEXT: ret
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define void @dont_optimize_retain_unowned(ptr %A) {
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tail call ptr @swift_retainUnowned(ptr %A)
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%L1 = load ptr, ptr %A, align 8
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; Use of a potential garbage address from a load of %A.
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%L2 = load i64, ptr %L1, align 8
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @dont_optimize_retain_unowned2
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; CHECK-NEXT: call ptr @swift_retainUnowned
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; CHECK-NEXT: store
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; CHECK-NEXT: call void @swift_release
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; CHECK-NEXT: ret
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define void @dont_optimize_retain_unowned2(ptr %A, ptr %B) {
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tail call ptr @swift_retainUnowned(ptr %A)
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; store to an unknown address
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store i32 42, ptr %B
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @dont_optimize_retain_unowned3
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; CHECK-NEXT: call ptr @swift_retainUnowned
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; CHECK-NEXT: call void @unknown_func
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; CHECK-NEXT: call void @swift_release
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; CHECK-NEXT: ret
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define void @dont_optimize_retain_unowned3(ptr %A) {
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tail call ptr @swift_retainUnowned(ptr %A)
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; call of an unknown function
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call void @unknown_func()
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @dont_optimize_retain_unowned4
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; CHECK-NEXT: call ptr @swift_retainUnowned
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; CHECK-NEXT: call ptr @swift_retain
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; CHECK-NEXT: call void @swift_release
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; CHECK-NEXT: ret
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define void @dont_optimize_retain_unowned4(ptr %A, ptr %B) {
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tail call ptr @swift_retainUnowned(ptr %A)
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; retain of an unknown reference (%B could be equal to %A)
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tail call ptr @swift_retain(ptr %B)
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @remove_redundant_check_unowned
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; CHECK-NEXT: load
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; CHECK-NEXT: call void @swift_checkUnowned
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; CHECK-NEXT: load
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; CHECK-NEXT: store
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; CHECK-NEXT: load
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; CHECK-NEXT: ret
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define void @remove_redundant_check_unowned(ptr %A, ptr %B, ptr %C) {
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tail call ptr @swift_retainUnowned(ptr %A)
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%L1 = load i64, ptr %A, align 8
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tail call void @swift_release(ptr %A)
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; Instructions which cannot do a release.
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%L2 = load i64, ptr %C, align 8
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store i64 42, ptr %C
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tail call ptr @swift_retainUnowned(ptr %A)
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%L3 = load i64, ptr %A, align 8
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @dont_remove_redundant_check_unowned
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; CHECK-NEXT: load
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; CHECK-NEXT: call void @swift_checkUnowned
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; CHECK-NEXT: call void @unknown_func
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; CHECK-NEXT: load
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; CHECK-NEXT: call void @swift_checkUnowned
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; CHECK-NEXT: ret
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define void @dont_remove_redundant_check_unowned(ptr %A, ptr %B, ptr %C) {
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tail call ptr @swift_retainUnowned(ptr %A)
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%L1 = load i64, ptr %A, align 8
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tail call void @swift_release(ptr %A)
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; Could do a release of %A
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call void @unknown_func()
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tail call ptr @swift_retainUnowned(ptr %A)
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%L3 = load i64, ptr %A, align 8
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @unknown_retain_promotion
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; CHECK-NEXT: swift_retain
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; CHECK-NEXT: swift_retain
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; CHECK-NEXT: swift_retain
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; CHECK-NEXT: ret
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define void @unknown_retain_promotion(ptr %A) {
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tail call ptr @swift_unknownObjectRetain(ptr %A)
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tail call ptr @swift_unknownObjectRetain(ptr %A)
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tail call ptr @swift_retain(ptr %A)
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ret void
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}
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; CHECK-LABEL: @unknown_release_promotion
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; CHECK-NEXT: swift_release
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; CHECK-NEXT: swift_release
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; CHECK-NEXT: swift_release
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; CHECK-NEXT: ret
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define void @unknown_release_promotion(ptr %A) {
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tail call void @swift_unknownObjectRelease(ptr %A)
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tail call void @swift_unknownObjectRelease(ptr %A)
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tail call void @swift_release(ptr %A)
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ret void
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}
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; CHECK-LABEL: @unknown_retain_nopromotion
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; CHECK: bb1
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; CHECK-NOT: swift_retain
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; CHECK: ret
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define void @unknown_retain_nopromotion(ptr %A) {
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tail call ptr @swift_retain(ptr %A)
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br label %bb1
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bb1:
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tail call ptr @swift_unknownObjectRetain(ptr %A)
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ret void
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}
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; CHECK-LABEL: @releasemotion_forwarding
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; CHECK-NOT: swift_retain
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; CHECK-NOT: swift_release
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; CHECK: call void @user(ptr %P)
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; CHECK: ret
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define void @releasemotion_forwarding(ptr %P, ptr %O, ptr %B) {
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entry:
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%res = tail call ptr @swift_retain(ptr %P)
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tail call void @swift_release(ptr %res) nounwind
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call void @user(ptr %res) nounwind
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ret void
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}
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; CHECK-LABEL: @retainmotion_forwarding
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; CHECK: store ptr %P, ptr %R, align 4
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; CHECK-NOT: swift_retain
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; CHECK-NOT: swift_release
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; CHECK: ret
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define void @retainmotion_forwarding(ptr %P, ptr %R, ptr %B) {
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entry:
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%res = tail call ptr @swift_retain(ptr %P)
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store ptr %res, ptr %R, align 4
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call void @swift_bridgeObjectRelease(ptr %B)
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tail call void @swift_release(ptr %res) nounwind
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ret void
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}
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; CHECK-LABEL: @unknownreleasemotion_forwarding
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; CHECK-NOT: swift_unknownObjectRetain
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; CHECK-NOT: swift_unknownObjectRelease
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; CHECK: call void @user(ptr %P)
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; CHECK: ret
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define void @unknownreleasemotion_forwarding(ptr %P, ptr %O, ptr %B) {
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entry:
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%res = tail call ptr @swift_unknownObjectRetain(ptr %P)
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tail call void @swift_unknownObjectRelease(ptr %res) nounwind
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call void @user(ptr %res) nounwind
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ret void
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}
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; CHECK-LABEL: @unknownretainmotion_forwarding
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; CHECK: store ptr %P, ptr %R, align 4
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; CHECK-NOT: swift_unknownObjectRetain
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; CHECK-NOT: swift_unknownObjectRelease
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; CHECK: ret
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define void @unknownretainmotion_forwarding(ptr %P, ptr %R, ptr %B) {
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entry:
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%res = tail call ptr @swift_unknownObjectRetain(ptr %P)
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store ptr %res, ptr %R, align 4
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call void @swift_bridgeObjectRelease(ptr %B)
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tail call void @swift_unknownObjectRelease(ptr %res) nounwind
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ret void
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}
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!llvm.dbg.cu = !{!1}
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!llvm.module.flags = !{!4}
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!0 = !DILocation(line: 0, scope: !3)
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!1 = distinct !DICompileUnit(language: DW_LANG_Swift, file: !2)
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!2 = !DIFile(filename: "basic.swift", directory: "")
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!3 = distinct !DISubprogram(name: "_", scope: !1, file: !2, type: !DISubroutineType(types: !{}))
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!4 = !{i32 1, !"Debug Info Version", i32 3}
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