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gerrit-public.fairphone.software / toolchain / llvm-project / 4c13e77d49b901b2dd385b3eeb4e4a0ec4692b42 / . / llvm / test / CodeGen / Generic / GC / alloc_loop.ll
blob: b1fee68abab8dc776a527d4f2fac01e6e867ca41 [file] [log] [blame]
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]1; RUN: llvm-as < %s | llc
Chris Lattner1f0758c2004-11-06 21:11:04 +0000[diff] [blame]2
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]3
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]4declare i8* @llvm_gc_allocate(i32)
5declare void @llvm_gc_initialize(i32)
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]6
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]7declare void @llvm.gcroot(i8**, i8*)
8declare void @llvm.gcwrite(i8*, i8*, i8**)
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]9
Gordon Henriksen71183b62007-12-10 03:18:06 +0000[diff] [blame]10define i32 @main() gc "shadow-stack" {
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]11entry:
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]12 %A = alloca i8*
13 %B = alloca i8**
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]14
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]15 call void @llvm_gc_initialize(i32 1048576) ; Start with 1MB heap
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]16
17 ;; void *A;
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]18 call void @llvm.gcroot(i8** %A, i8* null)
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]19
20 ;; A = gcalloc(10);
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]21 %Aptr = call i8* @llvm_gc_allocate(i32 10)
22 store i8* %Aptr, i8** %A
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]23
24 ;; void **B;
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]25 %tmp.1 = bitcast i8*** %B to i8**
26 call void @llvm.gcroot(i8** %tmp.1, i8* null)
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]27
28 ;; B = gcalloc(4);
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]29 %B.upgrd.1 = call i8* @llvm_gc_allocate(i32 8)
30 %tmp.2 = bitcast i8* %B.upgrd.1 to i8**
31 store i8** %tmp.2, i8*** %B
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]32
33 ;; *B = A;
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]34 %B.1 = load i8*** %B
35 %A.1 = load i8** %A
36 call void @llvm.gcwrite(i8* %A.1, i8* %B.upgrd.1, i8** %B.1)
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]37
38 br label %AllocLoop
39
40AllocLoop:
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]41 %i = phi i32 [ 0, %entry ], [ %indvar.next, %AllocLoop ]
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]42 ;; Allocated mem: allocated memory is immediately dead.
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]43 call i8* @llvm_gc_allocate(i32 100)
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]44
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]45 %indvar.next = add i32 %i, 1
46 %exitcond = icmp eq i32 %indvar.next, 10000000
47 br i1 %exitcond, label %Exit, label %AllocLoop
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]48
49Exit:
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]50 ret i32 0
Chris Lattneracd339e2004-05-23 21:24:50 +0000[diff] [blame]51}
52
Gordon Henriksenad80af92007-12-09 15:03:01 +0000[diff] [blame]53declare void @__main()