1 ; RUN: opt < %s -reassociate -S | FileCheck %s
3 ; Check that reassociate pass now salvages debug info when dropping instructions.
5 define hidden i32 @main(i32 %argc, i8** %argv) {
7 ; CHECK: call void @llvm.dbg.value(metadata i32 %argc, metadata [[VAR_B:![0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value))
8 %add = add nsw i32 %argc, 1, !dbg !26
9 call void @llvm.dbg.value(metadata i32 %add, metadata !22, metadata !DIExpression()), !dbg !25
10 %add1 = add nsw i32 %argc, %add, !dbg !27
11 ret i32 %add1, !dbg !28
14 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
15 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
18 !llvm.module.flags = !{!3, !4, !5, !6}
21 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 10.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, debugInfoForProfiling: true, nameTableKind: None)
22 !1 = !DIFile(filename: "test2.cpp", directory: "C:\")
24 !3 = !{i32 2, !"Dwarf Version", i32 4}
25 !4 = !{i32 2, !"Debug Info Version", i32 3}
26 !5 = !{i32 1, !"wchar_size", i32 2}
27 !6 = !{i32 7, !"PIC Level", i32 2}
28 !7 = !{!"clang version 10.0.0"}
29 !8 = distinct !DISubprogram(name: "main", scope: !9, file: !9, line: 1, type: !10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !18)
30 !9 = !DIFile(filename: "./test2.cpp", directory: "C:\")
31 !10 = !DISubroutineType(types: !11)
32 !11 = !{!12, !13, !14}
33 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
34 !13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !12)
35 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 64)
36 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
37 !16 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !17)
38 !17 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
39 !18 = !{!19, !20, !21, !22, !23, !24}
40 !19 = !DILocalVariable(name: "argc", arg: 1, scope: !8, file: !9, line: 1, type: !13)
41 !20 = !DILocalVariable(name: "argv", arg: 2, scope: !8, file: !9, line: 1, type: !14)
42 !21 = !DILocalVariable(name: "a", scope: !8, file: !9, line: 2, type: !12)
43 ; CHECK: [[VAR_B]] = !DILocalVariable(name: "b"
44 !22 = !DILocalVariable(name: "b", scope: !8, file: !9, line: 3, type: !12)
45 !23 = !DILocalVariable(name: "to_return", scope: !8, file: !9, line: 4, type: !12)
46 !24 = !DILocalVariable(name: "result", scope: !8, file: !9, line: 5, type: !12)
47 !25 = !DILocation(line: 0, scope: !8)
48 !26 = !DILocation(line: 3, scope: !8)
49 !27 = !DILocation(line: 4, scope: !8)
50 !28 = !DILocation(line: 6, scope: !8)