11d712c38SJeremy Morse; RUN: llc -mtriple=x86_64-unknown-linux-gnu -start-after=codegenprepare -stop-before=finalize-isel -o - %s -experimental-debug-variable-locations=true | FileCheck %s --implicit-check-not=DBG_PHI 21d712c38SJeremy Morse 31d712c38SJeremy Morse; Test that for multiple dbg.values referring to the same argument, we emit a 41d712c38SJeremy Morse; single DBG_PHI and refer to it twice. (Using more than one DBG_PHI is fine, 51d712c38SJeremy Morse; but inefficient). 61d712c38SJeremy Morse 71d712c38SJeremy Morse; CHECK-DAG: ![[LOCAL:.*]] = !DILocalVariable(name: "local" 81d712c38SJeremy Morse; CHECK-DAG: ![[LOCAL2:.*]] = !DILocalVariable(name: "local2" 91d712c38SJeremy Morse 101d712c38SJeremy Morse; CHECK: DBG_PHI $edi, 1 111d712c38SJeremy Morse 12*c383f4d6SStephen Tozer; CHECK: DBG_INSTR_REF ![[LOCAL]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 13*c383f4d6SStephen Tozer; CHECK: DBG_INSTR_REF ![[LOCAL2]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 141d712c38SJeremy Morse 151d712c38SJeremy Morsedeclare void @bar(i32) 161d712c38SJeremy Morsedeclare void @llvm.dbg.value(metadata, metadata, metadata) 171d712c38SJeremy Morse 181d712c38SJeremy Morsedefine dso_local void @foo_local(i32 %t1a) local_unnamed_addr !dbg !7 { 191d712c38SJeremy Morseentry: 201d712c38SJeremy Morse tail call void @bar(i32 %t1a) #3, !dbg !17 211d712c38SJeremy Morse %bees = add i32 %t1a, 3 221d712c38SJeremy Morse call void @llvm.dbg.value(metadata i32 %t1a, metadata !13, metadata !DIExpression()), !dbg !14 231d712c38SJeremy Morse call void @llvm.dbg.value(metadata i32 %t1a, metadata !19, metadata !DIExpression()), !dbg !14 241d712c38SJeremy Morse tail call void @bar(i32 %bees) #3, !dbg !17 251d712c38SJeremy Morse ret void, !dbg !18 261d712c38SJeremy Morse} 271d712c38SJeremy Morse 281d712c38SJeremy Morse!llvm.dbg.cu = !{!0} 291d712c38SJeremy Morse!llvm.module.flags = !{!3, !4, !5} 301d712c38SJeremy Morse!llvm.ident = !{!6} 311d712c38SJeremy Morse 321d712c38SJeremy Morse!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) 331d712c38SJeremy Morse!1 = !DIFile(filename: "foo.c", directory: "") 341d712c38SJeremy Morse!2 = !{} 351d712c38SJeremy Morse!3 = !{i32 2, !"Dwarf Version", i32 4} 361d712c38SJeremy Morse!4 = !{i32 2, !"Debug Info Version", i32 3} 371d712c38SJeremy Morse!5 = !{i32 1, !"wchar_size", i32 4} 381d712c38SJeremy Morse!6 = !{!"clang"} 391d712c38SJeremy Morse!7 = distinct !DISubprogram(name: "foo_local", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) 401d712c38SJeremy Morse!8 = !DISubroutineType(types: !9) 411d712c38SJeremy Morse!9 = !{null, !10} 421d712c38SJeremy Morse!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 431d712c38SJeremy Morse!11 = !{!12, !13} 441d712c38SJeremy Morse!12 = !DILocalVariable(name: "t1a", arg: 1, scope: !7, file: !1, line: 3, type: !10) 451d712c38SJeremy Morse!13 = !DILocalVariable(name: "local", scope: !7, file: !1, line: 4, type: !10) 461d712c38SJeremy Morse!14 = !DILocation(line: 3, column: 20, scope: !7) 471d712c38SJeremy Morse!15 = !DILocation(line: 4, column: 7, scope: !7) 481d712c38SJeremy Morse!16 = !DILocation(line: 5, column: 3, scope: !7) 491d712c38SJeremy Morse!17 = !DILocation(line: 7, column: 3, scope: !7) 501d712c38SJeremy Morse!18 = !DILocation(line: 8, column: 1, scope: !7) 511d712c38SJeremy Morse!19 = !DILocalVariable(name: "local2", scope: !7, file: !1, line: 4, type: !10) 52