71 lines · plain
1; RUN: llc %s -stop-after=finalize-isel -o - \2; RUN: | FileCheck %s --implicit-check-not=DBG_3 4;; Hand-written to test assignment tracking analysis' removal of redundant5;; debug loc definitions. Checks written inline.6 7target triple = "x86_64-unknown-linux-gnu"8 9define dso_local void @f() #0 !dbg !8 {10entry:11 call void @llvm.dbg.value(metadata i32 0, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !1512 call void @llvm.dbg.value(metadata i64 1, metadata !14, metadata !DIExpression()), !dbg !1513;; def [0 -> 32)14;; def [0 -> 64)15;; Second frag fully contains the first so first should be removed.16; CHECK: DBG_VALUE 1,17 call void @step()18 call void @llvm.dbg.value(metadata i32 2, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !1519 call void @llvm.dbg.value(metadata i32 3, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg !1520;; def [0 -> 32)21;; def [32 -> 64)22;; Frags don't overlap so no removal should take place:23; CHECK: DBG_VALUE 2,24; CHECK-NEXT: DBG_VALUE 3,25 call void @step()26 call void @llvm.dbg.value(metadata i16 4, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 16)), !dbg !1527 call void @llvm.dbg.value(metadata i8 5, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !1528;; def [0 -> 16)29;; def [8 -> 16)30;; Second frag doesn't fully contain first so no removal should take place:31; CHECK: DBG_VALUE 4,32; CHECK-NEXT: DBG_VALUE 5,33 call void @step()34 call void @llvm.dbg.value(metadata i16 6, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 16)), !dbg !1535 call void @llvm.dbg.value(metadata i8 7, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !1536 call void @llvm.dbg.value(metadata i32 8, metadata !14, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 16)), !dbg !1537;; def [0 -> 16)38;; def [8 -> 16)39;; def [8 -> 24)40;; Middle frag is fully contained by the last so should be removed.41; CHECK: DBG_VALUE 6,42; CHECK-NEXT: DBG_VALUE 8,43 ret void44}45 46declare void @step()47declare void @llvm.dbg.value(metadata, metadata, metadata) #148 49!llvm.dbg.cu = !{!0}50!llvm.module.flags = !{!2, !3, !4, !5, !6, !1000}51!llvm.ident = !{!7}52 53!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)54!1 = !DIFile(filename: "test.cpp", directory: "/")55!2 = !{i32 7, !"Dwarf Version", i32 5}56!3 = !{i32 2, !"Debug Info Version", i32 3}57!4 = !{i32 1, !"wchar_size", i32 4}58!5 = !{i32 7, !"uwtable", i32 1}59!6 = !{i32 7, !"frame-pointer", i32 2}60!7 = !{!"clang version 14.0.0"}61!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)62!9 = !DISubroutineType(types: !10)63!10 = !{!11, !11}64!11 = !DIBasicType(name: "long", size: 64, encoding: DW_ATE_signed)65!12 = !{}66!13 = distinct !DIAssignID()67!14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11)68!15 = !DILocation(line: 0, scope: !8)69!16 = distinct !DIAssignID()70!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}71