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annotate test/CodeGen/X86/GC/alloc_loop.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children afa8332a0e37
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95c75e76d11b LLVM 3.4
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1 ; RUN: llc < %s
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2
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4 declare i8* @llvm_gc_allocate(i32)
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5 declare void @llvm_gc_initialize(i32)
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6
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7 declare void @llvm.gcroot(i8**, i8*)
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8 declare void @llvm.gcwrite(i8*, i8*, i8**)
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9
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10 define i32 @main() gc "shadow-stack" {
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11 entry:
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12 %A = alloca i8*
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13 %B = alloca i8**
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14
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15 call void @llvm_gc_initialize(i32 1048576) ; Start with 1MB heap
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16
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17 ;; void *A;
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18 call void @llvm.gcroot(i8** %A, i8* null)
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19
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20 ;; A = gcalloc(10);
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21 %Aptr = call i8* @llvm_gc_allocate(i32 10)
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22 store i8* %Aptr, i8** %A
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23
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24 ;; void **B;
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25 %tmp.1 = bitcast i8*** %B to i8**
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26 call void @llvm.gcroot(i8** %tmp.1, i8* null)
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27
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28 ;; B = gcalloc(4);
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29 %B.upgrd.1 = call i8* @llvm_gc_allocate(i32 8)
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30 %tmp.2 = bitcast i8* %B.upgrd.1 to i8**
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31 store i8** %tmp.2, i8*** %B
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32
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33 ;; *B = A;
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34 %B.1 = load i8*** %B
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35 %A.1 = load i8** %A
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36 call void @llvm.gcwrite(i8* %A.1, i8* %B.upgrd.1, i8** %B.1)
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37
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38 br label %AllocLoop
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40 AllocLoop:
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41 %i = phi i32 [ 0, %entry ], [ %indvar.next, %AllocLoop ]
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42 ;; Allocated mem: allocated memory is immediately dead.
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43 call i8* @llvm_gc_allocate(i32 100)
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44
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45 %indvar.next = add i32 %i, 1
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46 %exitcond = icmp eq i32 %indvar.next, 10000000
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47 br i1 %exitcond, label %Exit, label %AllocLoop
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48
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49 Exit:
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50 ret i32 0
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51 }
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53 declare void @__main()