1; DWARF linkage name attributes are optional; verify they are missing for
2; PS4 triple or when tuning for SCE.
3
4; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s -check-prefix LINKAGE1
5; RUN: llc -O0 -mtriple=x86_64-unknown-unknown < %s | FileCheck %s -check-prefix LINKAGE2
6; RUN: llc -O0 -mtriple=x86_64-scei-ps4 < %s | FileCheck %s -check-prefix NOLINKAGE
7; RUN: llc -O0 -mtriple=x86_64-unknown-unknown -debugger-tune=sce < %s | FileCheck %s -check-prefix NOLINKAGE
8
9; $ clang++ -emit-llvm -S -g dwarf-linkage-names.cpp
10; namespace test {
11;  int global_var;
12;  int bar() { return global_var; }
13;};
14
15; With linkage names, we get an attribute for the declaration (first) entry
16; for the global variable, and one for the function.
17
18; This assumes the variable will appear before the function.
19; LINKAGE1: .section .debug_info
20; LINKAGE1: DW_TAG_variable
21; LINKAGE1-NOT: DW_TAG
22; LINKAGE1: {{DW_AT_(MIPS_)?linkage_name}}
23; LINKAGE1: DW_TAG_subprogram
24; LINKAGE1-NOT: DW_TAG
25; LINKAGE1: {{DW_AT_(MIPS_)?linkage_name}}
26; LINKAGE1: .section
27
28; Also verify we see the mangled names. We do this as a separate pass to
29; avoid depending on the order of .debug_info and .debug_str sections.
30
31; LINKAGE2-DAG: .asciz   "_ZN4test10global_varE"
32; LINKAGE2-DAG: .asciz   "_ZN4test3barEv"
33
34; Without linkage names, verify there aren't any linkage-name attributes,
35; and no mangled names.
36
37; NOLINKAGE-NOT: {{DW_AT_(MIPS_)?linkage_name}}
38; NOLINKAGE-NOT: .asciz   "_ZN4test10global_varE"
39; NOLINKAGE-NOT: .asciz   "_ZN4test3barEv"
40
41source_filename = "test/DebugInfo/X86/dwarf-linkage-names.ll"
42
43@_ZN4test10global_varE = global i32 0, align 4, !dbg !0
44
45; Function Attrs: nounwind uwtable
46define i32 @_ZN4test3barEv() #0 !dbg !11 {
47entry:
48  %0 = load i32, i32* @_ZN4test10global_varE, align 4, !dbg !14
49  ret i32 %0, !dbg !15
50}
51
52attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
53
54!llvm.dbg.cu = !{!5}
55!llvm.module.flags = !{!8, !9}
56!llvm.ident = !{!10}
57
58!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
59!1 = !DIGlobalVariable(name: "global_var", linkageName: "_ZN4test10global_varE", scope: !2, file: !3, line: 2, type: !4, isLocal: false, isDefinition: true)
60!2 = !DINamespace(name: "test", scope: null)
61!3 = !DIFile(filename: "dwarf-linkage-names.cpp", directory: "/home/probinson/projects/scratch")
62!4 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
63!5 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 3.8.0 (trunk 244662)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !6, globals: !7)
64!6 = !{}
65!7 = !{!0}
66!8 = !{i32 2, !"Dwarf Version", i32 4}
67!9 = !{i32 2, !"Debug Info Version", i32 3}
68!10 = !{!"clang version 3.8.0 (trunk 244662)"}
69!11 = distinct !DISubprogram(name: "bar", linkageName: "_ZN4test3barEv", scope: !2, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !5, retainedNodes: !6)
70!12 = !DISubroutineType(types: !13)
71!13 = !{!4}
72!14 = !DILocation(line: 3, column: 21, scope: !11)
73!15 = !DILocation(line: 3, column: 14, scope: !11)
74
75