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annotate llvm/test/Transforms/ObjCARC/weak-dce.ll @ 207:2e18cbf3894f

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LLVM12
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 08 Jun 2021 06:07:14 +0900
parents 1d019706d866
children c4bab56944e8
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rev   line source
207
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 150
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1 ; RUN: opt -S -basic-aa -objc-arc < %s | FileCheck %s
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2 ; rdar://11434915
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3
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4 ; Delete the weak calls and replace them with just the net retain.
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5
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6 ; CHECK: define void @test0(i8* %p) {
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7 ; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %p)
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8 ; CHECK-NEXT: ret void
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9
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10 define void @test0(i8* %p) {
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11 %weakBlock = alloca i8*, align 8
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12 %tmp7 = call i8* @llvm.objc.initWeak(i8** %weakBlock, i8* %p) nounwind
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13 %tmp26 = call i8* @llvm.objc.loadWeakRetained(i8** %weakBlock) nounwind
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14 call void @llvm.objc.destroyWeak(i8** %weakBlock) nounwind
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15 ret void
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16 }
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17
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18 ; CHECK: define i8* @test1(i8* %p) {
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19 ; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %p)
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20 ; CHECK-NEXT: ret i8* %p
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21
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22 define i8* @test1(i8* %p) {
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23 %weakBlock = alloca i8*, align 8
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24 %tmp7 = call i8* @llvm.objc.initWeak(i8** %weakBlock, i8* %p) nounwind
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25 %tmp26 = call i8* @llvm.objc.loadWeakRetained(i8** %weakBlock) nounwind
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26 call void @llvm.objc.destroyWeak(i8** %weakBlock) nounwind
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27 ret i8* %tmp26
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28 }
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29
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30 ; CHECK: define i8* @test2(i8* %p, i8* %q) {
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31 ; CHECK-NEXT: call i8* @llvm.objc.retain(i8* %q)
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32 ; CHECK-NEXT: ret i8* %q
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33
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34 define i8* @test2(i8* %p, i8* %q) {
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35 %weakBlock = alloca i8*, align 8
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36 %tmp7 = call i8* @llvm.objc.initWeak(i8** %weakBlock, i8* %p) nounwind
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37 %tmp19 = call i8* @llvm.objc.storeWeak(i8** %weakBlock, i8* %q) nounwind
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38 %tmp26 = call i8* @llvm.objc.loadWeakRetained(i8** %weakBlock) nounwind
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39 call void @llvm.objc.destroyWeak(i8** %weakBlock) nounwind
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40 ret i8* %tmp26
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41 }
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42
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43 declare i8* @llvm.objc.initWeak(i8**, i8*)
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44 declare void @llvm.objc.destroyWeak(i8**)
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45 declare i8* @llvm.objc.loadWeakRetained(i8**)
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46 declare i8* @llvm.objc.storeWeak(i8** %weakBlock, i8* %q)