| ; RUN: opt -passes=dce -S %s -o - | FileCheck %s |
| |
| ;; Check that DCE doesn't remove a dbg intrinsic that has an empty metadata |
| ;; operand. |
| ; CHECK: call void @llvm.dbg.declare(metadata ![[EMPTY:[0-9]+]], |
| ; CHECK: ![[EMPTY]] = !{} |
| |
| define dso_local void @fun() local_unnamed_addr #0 !dbg !9 { |
| entry: |
| call void @llvm.dbg.declare(metadata !{}, metadata !13, metadata !DIExpression()), !dbg !15 |
| ret void, !dbg !16 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3, !4, !5, !6, !7} |
| !llvm.ident = !{!8} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 16.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "test.c", directory: "/") |
| !2 = !{i32 7, !"Dwarf Version", i32 5} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = !{i32 1, !"wchar_size", i32 4} |
| !5 = !{i32 8, !"PIC Level", i32 2} |
| !6 = !{i32 7, !"PIE Level", i32 2} |
| !7 = !{i32 7, !"uwtable", i32 2} |
| !8 = !{!"clang version 16.0.0"} |
| !9 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 1, type: !10, scopeLine: 1, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !10 = !DISubroutineType(types: !11) |
| !11 = !{null} |
| !12 = !{!13} |
| !13 = !DILocalVariable(name: "a", scope: !9, file: !1, line: 1, type: !14) |
| !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !15 = !DILocation(line: 1, column: 18, scope: !9) |
| !16 = !DILocation(line: 1, column: 21, scope: !9) |
| |
