xref: /llvm-project/llvm/test/DebugInfo/X86/basic-block-sections-debug-loc-const-value-1.ll (revision 391f323690b9ef84d13a09ff07fb805008401fee) 
1; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
2; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
3; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
4; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
5
6; CHECK:      DW_TAG_variable
7; CHECK-NEXT: DW_AT_const_value	(7)
8; CHECK-NEXT: DW_AT_name	("i")
9
10; Source to generate the IR below:
11; void f1();
12; extern bool b;
13; extern int x;
14; void test() {
15;     // i is a const throughout the whole scope and should
16;     // use DW_AT_const_value
17;     int i = 7;
18;     f1();
19;     if (b)
20;       f1();
21; }
22;
23; $ clang++ -S -emit-llvm -g -O2 simple.cc
24;
25
26@b = external dso_local local_unnamed_addr global i8, align 1
27
28define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
29entry:
30  call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
31  tail call void @_Z2f1v(), !dbg !14
32  %0 = load i8, ptr @b, align 1, !dbg !15, !tbaa !17, !range !21
33  %tobool.not = icmp eq i8 %0, 0, !dbg !15
34  br i1 %tobool.not, label %if.end, label %if.then, !dbg !22
35
36if.then:                                          ; preds = %entry
37  tail call void @_Z2f1v(), !dbg !23
38  br label %if.end, !dbg !23
39
40if.end:                                           ; preds = %if.then, %entry
41  ret void, !dbg !24
42}
43
44declare !dbg !25 dso_local void @_Z2f1v() local_unnamed_addr
45
46declare void @llvm.dbg.value(metadata, metadata, metadata)
47
48!llvm.dbg.cu = !{!0}
49!llvm.module.flags = !{!3, !4, !5}
50!llvm.ident = !{!6}
51
52!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
53!1 = !DIFile(filename: "simple.cc", directory: "/code")
54!2 = !{}
55!3 = !{i32 7, !"Dwarf Version", i32 4}
56!4 = !{i32 2, !"Debug Info Version", i32 3}
57!5 = !{i32 1, !"wchar_size", i32 4}
58!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
59!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
60!8 = !DISubroutineType(types: !9)
61!9 = !{null}
62!10 = !{!11}
63!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 14, type: !12)
64!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
65!13 = !DILocation(line: 0, scope: !7)
66!14 = !DILocation(line: 15, column: 5, scope: !7)
67!15 = !DILocation(line: 16, column: 9, scope: !16)
68!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 16, column: 9)
69!17 = !{!18, !18, i64 0}
70!18 = !{!"bool", !19, i64 0}
71!19 = !{!"omnipotent char", !20, i64 0}
72!20 = !{!"Simple C++ TBAA"}
73!21 = !{i8 0, i8 2}
74!22 = !DILocation(line: 16, column: 9, scope: !7)
75!23 = !DILocation(line: 17, column: 7, scope: !16)
76!24 = !DILocation(line: 18, column: 1, scope: !7)
77!25 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
78