mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
87 lines
3.5 KiB
LLVM
87 lines
3.5 KiB
LLVM
; RUN: opt -load %libdir/SwiftARCPasses.dylib -swift-arc-optimize -S %s | FileCheck %s
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; XFAIL: asan
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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-darwin11.3.0"
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%swift.refcounted = type { %swift.heapmetadata*, i64 }
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%swift.heapmetadata = type { i64 (%swift.refcounted*)*, i64 (%swift.refcounted*)* }
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%objc_object = type opaque
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declare %objc_object* @objc_retain(%objc_object*)
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declare void @objc_release(%objc_object*)
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declare %swift.refcounted* @swift_allocObject(%swift.heapmetadata* , i64, i64) nounwind
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declare void @swift_release(%swift.refcounted* nocapture)
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declare %swift.refcounted* @swift_retain(%swift.refcounted* ) nounwind
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declare void @swift_retain_noresult(%swift.refcounted* nocapture) nounwind
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declare { i64, i64, i64 } @swift_retainAndReturnThree(%swift.refcounted* , i64, i64 , i64 )
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; rdar://11542743
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define i64 @max_test(i64 %x) nounwind {
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entry:
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%0 = tail call noalias %swift.refcounted* @swift_allocObject(%swift.heapmetadata* null, i64 24, i64 8) nounwind
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%1 = tail call %swift.refcounted* @swift_retain(%swift.refcounted* %0) nounwind
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tail call void @swift_release(%swift.refcounted* %0) nounwind
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%2 = icmp sgt i64 %x, 0
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%x.y.i = select i1 %2, i64 %x, i64 0
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%3 = tail call %swift.refcounted* @swift_retain(%swift.refcounted* %1) nounwind
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tail call void @swift_release(%swift.refcounted* %3) nounwind
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tail call void @swift_release(%swift.refcounted* %1) nounwind
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ret i64 %x.y.i
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}
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; CHECK: @max_test
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; CHECK-NEXT: entry:
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; CHECK-NEXT: icmp
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; CHECK-NEXT: select
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; CHECK-NEXT: ret
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; trivial_alloc_eliminate1 - Show that we can eliminate an allocation with a
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; trivial destructor.
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@trivial_dtor_metadata = internal constant %swift.heapmetadata { i64 (%swift.refcounted*)* @trivial_dtor, i64 (%swift.refcounted*)* null }
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define internal i64 @trivial_dtor(%swift.refcounted* nocapture) nounwind readonly {
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entry:
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%1 = getelementptr inbounds %swift.refcounted* %0, i64 1
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%2 = bitcast %swift.refcounted* %1 to i64*
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%length = load i64* %2, align 8
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%3 = shl i64 %length, 3
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%4 = add i64 %3, 24
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ret i64 %4
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}
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define void @trivial_alloc_eliminate1(i64 %x) nounwind {
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entry:
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%0 = tail call noalias %swift.refcounted* @swift_allocObject(%swift.heapmetadata* @trivial_dtor_metadata, i64 24, i64 8) nounwind
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tail call void @swift_release(%swift.refcounted* %0) nounwind
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ret void
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}
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; CHECK: @trivial_alloc_eliminate1
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret void
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; trivial_alloc_eliminate2 - Show that we can eliminate an allocation with a
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; destructor that does a retain on the 'self' object.
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@trivial_dtor_metadata2 = internal constant %swift.heapmetadata { i64 (%swift.refcounted*)* @trivial_dtor2, i64 (%swift.refcounted*)* null }
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define internal i64 @trivial_dtor2(%swift.refcounted* nocapture %this) nounwind readonly {
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entry:
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%0 = getelementptr inbounds %swift.refcounted* %this, i64 1, i32 0
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store %swift.heapmetadata* inttoptr (i64 4 to %swift.heapmetadata*), %swift.heapmetadata** %0, align 8
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tail call %swift.refcounted* @swift_retain(%swift.refcounted* %this)
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ret i64 48
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}
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define void @trivial_alloc_eliminate2(i64 %x) nounwind {
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entry:
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%0 = tail call noalias %swift.refcounted* @swift_allocObject(%swift.heapmetadata* @trivial_dtor_metadata2, i64 24, i64 8) nounwind
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tail call void @swift_release(%swift.refcounted* %0) nounwind
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ret void
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}
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; CHECK: @trivial_alloc_eliminate2
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret void
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