1; Check that the basic block sections suffix naming does not conflict with __cxx_global_var_init.N naming.
2; How to  generate this file:
3;; class A {
4;;  public:
5;;    A(bool a) { }
6;; };
7;;
8;; extern bool bar(int);
9;; A g_a(bar(5) ? bar(3) : false), g_b(true);
10;;
11;; $ clang -O1 -emit-llvm -S
12;;
13; __cxx_global_var_init has multiple basic blocks which will produce many sections.
14; RUN: llc < %s -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=all -unique-basic-block-section-names | FileCheck %s
15
16; CHECK-LABEL: __cxx_global_var_init:
17; CHECK-LABEL: __cxx_global_var_init.__part.1:
18; CHECK-LABEL: __cxx_global_var_init.1:
19
20%class.A = type { i8 }
21
22$_ZN1AC2Eb = comdat any
23
24@g_a = dso_local global %class.A zeroinitializer, align 1
25@g_b = dso_local global %class.A zeroinitializer, align 1
26@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_symcollision.cc, i8* null }]
27
28define internal fastcc void @__cxx_global_var_init() unnamed_addr section ".text.startup" {
29entry:
30  %call = call zeroext i1 @_Z3bari(i32 5)
31  br i1 %call, label %cond.true, label %cond.end
32
33cond.true:                                        ; preds = %entry
34  %call1 = call zeroext i1 @_Z3bari(i32 3)
35  br label %cond.end
36
37cond.end:                                         ; preds = %entry, %cond.true
38  %cond = phi i1 [ %call1, %cond.true ], [ false, %entry ]
39  call void @_ZN1AC2Eb(%class.A* nonnull @g_a, i1 zeroext %cond)
40  ret void
41}
42
43declare dso_local zeroext i1 @_Z3bari(i32) local_unnamed_addr
44
45define linkonce_odr dso_local void @_ZN1AC2Eb(%class.A* %this, i1 zeroext %a) unnamed_addr comdat align 2 {
46entry:
47  ret void
48}
49
50define internal fastcc void @__cxx_global_var_init.1() unnamed_addr  section ".text.startup" {
51entry:
52  call void @_ZN1AC2Eb(%class.A* nonnull @g_b, i1 zeroext true)
53  ret void
54}
55
56define internal void @_GLOBAL__sub_I_symcollision.cc()  section ".text.startup" {
57entry:
58  call fastcc void @__cxx_global_var_init()
59  call fastcc void @__cxx_global_var_init.1()
60  ret void
61}
62