1; RUN: llc %s -stop-after=finalize-isel -o - \ 2; RUN: | FileCheck %s --implicit-check-not=DBG_ 3 4 5; RUN: llc --try-experimental-debuginfo-iterators %s -stop-after=finalize-isel -o - \ 6; RUN: | FileCheck %s --implicit-check-not=DBG_ 7 8;; Hand-written to test assignment tracking analysis' removal of redundant 9;; debug loc definitions. Checks written inline. 10 11target triple = "x86_64-unknown-linux-gnu" 12 13define dso_local void @f() #0 !dbg !8 { 14entry: 15 call void @llvm.dbg.value(metadata i32 0, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !15 16 call void @llvm.dbg.value(metadata i64 1, metadata !14, metadata !DIExpression()), !dbg !15 17;; def [0 -> 32) 18;; def [0 -> 64) 19;; Second frag fully contains the first so first should be removed. 20; CHECK: DBG_VALUE 1, 21 call void @step() 22 call void @llvm.dbg.value(metadata i32 2, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !15 23 call void @llvm.dbg.value(metadata i32 3, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !15 24;; def [0 -> 32) 25;; def [32 -> 64) 26;; Frags don't overlap so no removal should take place: 27; CHECK: DBG_VALUE 2, 28; CHECK-NEXT: DBG_VALUE 3, 29 call void @step() 30 call void @llvm.dbg.value(metadata i16 4, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 16)), !dbg !15 31 call void @llvm.dbg.value(metadata i8 5, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !15 32;; def [0 -> 16) 33;; def [8 -> 16) 34;; Second frag doesn't fully contain first so no removal should take place: 35; CHECK: DBG_VALUE 4, 36; CHECK-NEXT: DBG_VALUE 5, 37 call void @step() 38 call void @llvm.dbg.value(metadata i16 6, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 16)), !dbg !15 39 call void @llvm.dbg.value(metadata i8 7, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !15 40 call void @llvm.dbg.value(metadata i32 8, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 16)), !dbg !15 41;; def [0 -> 16) 42;; def [8 -> 16) 43;; def [8 -> 24) 44;; Middle frag is fully contained by the last so should be removed. 45; CHECK: DBG_VALUE 6, 46; CHECK-NEXT: DBG_VALUE 8, 47 ret void 48} 49 50declare void @step() 51declare void @llvm.dbg.value(metadata, metadata, metadata) #1 52 53!llvm.dbg.cu = !{!0} 54!llvm.module.flags = !{!2, !3, !4, !5, !6, !1000} 55!llvm.ident = !{!7} 56 57!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) 58!1 = !DIFile(filename: "test.cpp", directory: "/") 59!2 = !{i32 7, !"Dwarf Version", i32 5} 60!3 = !{i32 2, !"Debug Info Version", i32 3} 61!4 = !{i32 1, !"wchar_size", i32 4} 62!5 = !{i32 7, !"uwtable", i32 1} 63!6 = !{i32 7, !"frame-pointer", i32 2} 64!7 = !{!"clang version 14.0.0"} 65!8 = distinct !DISubprogram(name: "f", linkageName: "_Z1fl", scope: !1, file: !1, line: 1, type: !9, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !12) 66!9 = !DISubroutineType(types: !10) 67!10 = !{!11, !11} 68!11 = !DIBasicType(name: "long", size: 64, encoding: DW_ATE_signed) 69!12 = !{} 70!13 = distinct !DIAssignID() 71!14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11) 72!15 = !DILocation(line: 0, scope: !8) 73!16 = distinct !DIAssignID() 74!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true} 75