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1; RUN: %llc_dwarf -filetype=obj -o %t.o < %s2; RUN: llvm-dwarfdump %t.o | FileCheck %s3 4;; Checks that when we have a set of debug values that are all different but5;; result in identical DW_AT_location entries, we are able to merge them into a6;; single DW_AT_location instead of producing a loclist with identical locations7;; for each.8 9;; Checks that we can merge a non-variadic debug value with an equivalent10;; variadic debug value.11; CHECK: DW_AT_location12; CHECK-SAME: (DW_OP_fbreg +{{[0-9]+}}, DW_OP_deref, DW_OP_stack_value)13; CHECK-NEXT: DW_AT_name ("Var2")14 15target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"16target triple = "x86_64-unknown-linux-gnu"17 18%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }19 20define i32 @_ZN4llvm9MCContext12GetDwarfFileENS_9StringRefES1_jj(ptr %this, ptr %A, i64 %B, ptr %C, i64 %D, i32 %E, i32 %CUID, i1 %cmp.i.i.i.i.i) !dbg !10 {21entry:22 %CUID.addr = alloca i32, align 423 store i32 %CUID, ptr %CUID.addr, align 424 call void @llvm.dbg.value(metadata ptr %CUID.addr, metadata !26, metadata !DIExpression(DW_OP_deref, DW_OP_stack_value)), !dbg !1725 %0 = load ptr, ptr null, align 8, !dbg !1826 call void @llvm.dbg.value(metadata !DIArgList(ptr %CUID.addr), metadata !26, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_deref, DW_OP_stack_value)), !dbg !1827 br label %while.body.i.i.i.i28 29while.body.i.i.i.i: ; preds = %while.body.i.i.i.i, %entry30 %__x.addr.011.i.i.i.i = phi ptr [ %__x.addr.1.in.i.i.i.i, %while.body.i.i.i.i ], [ %0, %entry ]31 %_M_right.i.i.i.i.i = getelementptr inbounds %"struct.std::_Rb_tree_node_base", ptr %__x.addr.011.i.i.i.i, i64 0, i32 3, !dbg !2032 %__x.addr.1.in.i.i.i.i = select i1 %cmp.i.i.i.i.i, ptr %__x.addr.011.i.i.i.i, ptr null, !dbg !2033 br label %while.body.i.i.i.i34}35 36declare void @llvm.dbg.value(metadata, metadata, metadata)37 38!llvm.dbg.cu = !{!0}39!llvm.module.flags = !{!2, !3, !4, !5, !6, !7, !8}40!llvm.ident = !{!9}41 42!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 16.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)43!1 = !DIFile(filename: "test.cpp", directory: "/")44!2 = !{i32 7, !"Dwarf Version", i32 5}45!3 = !{i32 2, !"Debug Info Version", i32 3}46!4 = !{i32 1, !"wchar_size", i32 4}47!5 = !{i32 8, !"PIC Level", i32 2}48!6 = !{i32 7, !"PIE Level", i32 2}49!7 = !{i32 7, !"uwtable", i32 2}50!8 = !{i32 7, !"frame-pointer", i32 2}51!9 = !{!"clang version 16.0.0"}52!10 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooPi", scope: !1, file: !1, line: 1, type: !11, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !15)53!11 = !DISubroutineType(types: !12)54!12 = !{!13, !14}55!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)56!14 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)57!15 = !{}58!16 = !DILocalVariable(name: "Var1", scope: !10, file: !1, line: 1, type: !14)59!17 = !DILocation(line: 1, column: 14, scope: !10)60!18 = !DILocation(line: 2, column: 3, scope: !10)61!19 = !DILocation(line: 2, column: 5, scope: !10)62!20 = !DILocation(line: 3, column: 10, scope: !10)63!21 = !DILocation(line: 3, column: 9, scope: !10)64!22 = !DILocation(line: 3, column: 2, scope: !10)65!26 = !DILocalVariable(name: "Var2", scope: !10, file: !1, line: 1, type: !14)66