xref: /llvm-project/llvm/test/Transforms/CodeExtractor/live_shrink_unsafe.ll (revision bbbbbfbdcb1ab1ba9857138dfa0f2355da8e4499)
1; The expected behavior of this file is expected to change when partial
2; inlining legality check is enhanced.
3
4; RUN: opt -S -passes=partial-inliner -skip-partial-inlining-cost-analysis  < %s   | FileCheck %s
5; RUN: opt -S -passes=partial-inliner -skip-partial-inlining-cost-analysis < %s |   FileCheck %s
6
7%class.A = type { i32 }
8
9@cond = local_unnamed_addr global i32 0, align 4
10@condptr = external local_unnamed_addr global ptr, align 8
11
12; Function Attrs: uwtable
13define void @_Z3foo_unknown_mem_accessv() local_unnamed_addr  {
14bb:
15  %tmp = alloca %class.A, align 4
16  %tmp1 = alloca %class.A, align 4
17  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %tmp)
18  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %tmp1)
19  %tmp4 = load ptr, ptr @condptr, align 8, !tbaa !2
20  %tmp5 = load i32, ptr %tmp4, align 4, !tbaa !6
21  %tmp6 = icmp eq i32 %tmp5, 0
22  br i1 %tmp6, label %bb7, label %bb8
23
24bb7:                                              ; preds = %bb
25  call void @_ZN1A7memfuncEv(ptr nonnull %tmp)
26  br label %bb8
27
28bb8:                                              ; preds = %bb7, %bb
29  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %tmp1)
30  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %tmp)
31  ret void
32}
33
34declare void @_Z3barv() local_unnamed_addr
35declare void @llvm.lifetime.start.p0(i64, ptr nocapture)
36declare void @_ZN1A7memfuncEv(ptr) local_unnamed_addr
37declare void @llvm.lifetime.end.p0(i64, ptr nocapture)
38
39define void @_Z3foo_unknown_calli(i32 %arg) local_unnamed_addr {
40bb:
41  %tmp = alloca %class.A, align 4
42  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %tmp)
43  tail call void @_Z3barv()
44  %tmp2 = icmp eq i32 %arg, 0
45  br i1 %tmp2, label %bb3, label %bb4
46
47bb3:                                              ; preds = %bb
48  call void @_ZN1A7memfuncEv(ptr nonnull %tmp)
49  br label %bb4
50
51bb4:                                              ; preds = %bb3, %bb
52  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %tmp)
53  ret void
54}
55
56define void @_Z3goov() local_unnamed_addr  {
57; CHECK-LABEL: @_Z3goov
58; CHECK-NEXT: bb:
59; CHECK: alloca
60; CHECK: lifetime
61bb:
62  call void @_Z3foo_unknown_mem_accessv()
63  %tmp = load i32, ptr @cond, align 4, !tbaa !2
64  tail call void @_Z3foo_unknown_calli(i32 %tmp)
65  ret void
66}
67
68; CHECK-LABEL: define internal void @_Z3foo_unknown_calli.1.bb3
69; CHECK: newFuncRoot:
70; CHECK-NEXT: br label %bb3
71
72; CHECK: bb3:
73; CHECK-NOT: lifetime.ed
74; CHECK: br label %bb4.exitStub
75
76; CHECK: bb4.exitStub:
77; CHECK-NEXT: ret void
78
79
80
81!llvm.module.flags = !{!0}
82!llvm.ident = !{!1}
83
84!0 = !{i32 1, !"wchar_size", i32 4}
85!1 = !{!"clang version 5.0.0 (trunk 304489)"}
86!2 = !{!3, !3, i64 0}
87!3 = !{!"any pointer", !4, i64 0}
88!4 = !{!"omnipotent char", !5, i64 0}
89!5 = !{!"Simple C++ TBAA"}
90!6 = !{!7, !7, i64 0}
91!7 = !{!"int", !4, i64 0}
92