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1# RUN: llc -O2 %s -start-after=arm-mve-vpt-opts -stop-after=arm-prera-ldst-opt -o - | FileCheck %s2# CHECK: DBG_VALUE 13, $noreg, !11, !DIExpression(), debug-location !133 4 5# This test checks to make sure that a DBG_VALUE that uses an immediate doesn't get zero-ed out by a DBG_VALUE that comes later in the basic block, and describes the same variable.6 7--- |8 ; ModuleID = '/Users/shubham/Development/llvm-project/llvm/test/DebugInfo/Generic/incorrect-variable-debugloc1.ll'9 source_filename = "/Users/shubham/Development/llvm-project/llvm/test/DebugInfo/Generic/incorrect-variable-debugloc1.ll"10 target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"11 target triple = "armv8-unknown-linux"12 13 ; Function Attrs: uwtable14 define i32 @main() !dbg !6 {15 entry:16 %c = alloca i32, align 417 tail call void @llvm.dbg.value(metadata i32 13, metadata !11, metadata !DIExpression()), !dbg !1318 store volatile i32 13, ptr %c, align 4, !dbg !1419 %call = tail call i32 @_Z4funcv(), !dbg !1520 tail call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !1321 store volatile i32 %call, ptr %c, align 4, !dbg !1522 tail call void @llvm.dbg.value(metadata ptr %c, metadata !11, metadata !DIExpression(DW_OP_deref)), !dbg !1323 %c.0.c.0. = load volatile i32, ptr %c, align 4, !dbg !1624 ret i32 %c.0.c.0., !dbg !1625 }26 27 declare i32 @_Z4funcv()28 29 declare void @llvm.dbg.value(metadata, metadata, metadata)30 31 !llvm.dbg.cu = !{!0}32 !llvm.module.flags = !{!3, !4}33 !llvm.ident = !{!5}34 35 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.6.0 (trunk 223522)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)36 !1 = !DIFile(filename: "test.cpp", directory: "/home/kromanova/ngh/ToT_latest/llvm/test/DebugInfo")37 !2 = !{}38 !3 = !{i32 2, !"Dwarf Version", i32 2}39 !4 = !{i32 2, !"Debug Info Version", i32 3}40 !5 = !{!"clang version 3.6.0 (trunk 223522)"}41 !6 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !7, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)42 !7 = !DISubroutineType(types: !8)43 !8 = !{!9}44 !9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)45 !10 = !{!11}46 !11 = !DILocalVariable(name: "c", scope: !6, file: !1, line: 5, type: !12)47 !12 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !9)48 !13 = !DILocation(line: 5, column: 16, scope: !6)49 !14 = !DILocation(line: 5, column: 3, scope: !6)50 !15 = !DILocation(line: 6, column: 7, scope: !6)51 !16 = !DILocation(line: 7, column: 3, scope: !6)52 53...54---55name: main56alignment: 457exposesReturnsTwice: false58legalized: false59regBankSelected: false60selected: false61failedISel: false62tracksRegLiveness: true63hasWinCFI: false64callsEHReturn: false65callsUnwindInit: false66hasEHContTarget: false67hasEHScopes: false68hasEHFunclets: false69isOutlined: false70debugInstrRef: false71failsVerification: false72tracksDebugUserValues: false73registers:74 - { id: 0, class: gpr, preferred-register: '' }75 - { id: 1, class: gpr, preferred-register: '' }76 - { id: 2, class: gpr, preferred-register: '' }77liveins: []78frameInfo:79 isFrameAddressTaken: false80 isReturnAddressTaken: false81 hasStackMap: false82 hasPatchPoint: false83 stackSize: 084 offsetAdjustment: 085 maxAlignment: 486 adjustsStack: true87 hasCalls: true88 stackProtector: ''89 functionContext: ''90 maxCallFrameSize: 091 cvBytesOfCalleeSavedRegisters: 092 hasOpaqueSPAdjustment: false93 hasVAStart: false94 hasMustTailInVarArgFunc: false95 hasTailCall: false96 localFrameSize: 497 savePoint: []98 restorePoint: []99fixedStack: []100stack:101 - { id: 0, name: c, type: default, offset: 0, size: 4, alignment: 4, 102 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 103 local-offset: -4, debug-info-variable: '', debug-info-expression: '', 104 debug-info-location: '' }105callSites: []106debugValueSubstitutions: []107constants: []108machineFunctionInfo: {}109body: |110 bb.0.entry:111 DBG_VALUE 13, $noreg, !11, !DIExpression(), debug-location !13112 %0:gpr = MOVi 13, 14 /* CC::al */, $noreg, $noreg113 STRi12 killed %0, %stack.0.c, 0, 14 /* CC::al */, $noreg, debug-location !14 :: (volatile store (s32) into %ir.c)114 ADJCALLSTACKDOWN 0, 0, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp, debug-location !15115 BL @_Z4funcv, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0, debug-location !15116 ADJCALLSTACKUP 0, -1, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp, debug-location !15117 %1:gpr = COPY $r0, debug-location !15118 DBG_VALUE %1, $noreg, !11, !DIExpression(), debug-location !13119 STRi12 %1, %stack.0.c, 0, 14 /* CC::al */, $noreg, debug-location !15 :: (volatile store (s32) into %ir.c)120 DBG_VALUE %stack.0.c, $noreg, !11, !DIExpression(DW_OP_deref), debug-location !13121 %2:gpr = LDRi12 %stack.0.c, 0, 14 /* CC::al */, $noreg, debug-location !16 :: (volatile dereferenceable load (s32) from %ir.c)122 $r0 = COPY %2, debug-location !16123 BX_RET 14 /* CC::al */, $noreg, implicit $r0, debug-location !16124 125...126