1# RUN: llc -O2 %s -start-after=arm-mve-vpt-opts -stop-after=arm-prera-ldst-opt -o - | FileCheck %s 2# CHECK: DBG_VALUE 13, $noreg, !11, !DIExpression(), debug-location !13 3 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: uwtable 14 define i32 @main() !dbg !6 { 15 entry: 16 %c = alloca i32, align 4 17 tail call void @llvm.dbg.value(metadata i32 13, metadata !11, metadata !DIExpression()), !dbg !13 18 store volatile i32 13, ptr %c, align 4, !dbg !14 19 %call = tail call i32 @_Z4funcv(), !dbg !15 20 tail call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13 21 store volatile i32 %call, ptr %c, align 4, !dbg !15 22 tail call void @llvm.dbg.value(metadata ptr %c, metadata !11, metadata !DIExpression(DW_OP_deref)), !dbg !13 23 %c.0.c.0. = load volatile i32, ptr %c, align 4, !dbg !16 24 ret i32 %c.0.c.0., !dbg !16 25 } 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: main 56alignment: 4 57exposesReturnsTwice: false 58legalized: false 59regBankSelected: false 60selected: false 61failedISel: false 62tracksRegLiveness: true 63hasWinCFI: false 64callsEHReturn: false 65callsUnwindInit: false 66hasEHCatchret: false 67hasEHScopes: false 68hasEHFunclets: false 69isOutlined: false 70debugInstrRef: false 71failsVerification: false 72tracksDebugUserValues: false 73registers: 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: false 80 isReturnAddressTaken: false 81 hasStackMap: false 82 hasPatchPoint: false 83 stackSize: 0 84 offsetAdjustment: 0 85 maxAlignment: 4 86 adjustsStack: true 87 hasCalls: true 88 stackProtector: '' 89 functionContext: '' 90 maxCallFrameSize: 0 91 cvBytesOfCalleeSavedRegisters: 0 92 hasOpaqueSPAdjustment: false 93 hasVAStart: false 94 hasMustTailInVarArgFunc: false 95 hasTailCall: false 96 localFrameSize: 4 97 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 !13 112 %0:gpr = MOVi 13, 14 /* CC::al */, $noreg, $noreg 113 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 !15 115 BL @_Z4funcv, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0, debug-location !15 116 ADJCALLSTACKUP 0, -1, 14 /* CC::al */, $noreg, implicit-def dead $sp, implicit $sp, debug-location !15 117 %1:gpr = COPY $r0, debug-location !15 118 DBG_VALUE %1, $noreg, !11, !DIExpression(), debug-location !13 119 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 !13 121 %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 !16 123 BX_RET 14 /* CC::al */, $noreg, implicit $r0, debug-location !16 124 125... 126