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1# RUN: llc -start-before=livedebugvalues -filetype=obj -o - %s | \2# RUN: llvm-dwarfdump - | FileCheck %s3#4# This is an artificial example of a debug value residing in a composite5# location with a complex expression. Because the semantics of applying a DWARF6# expression to a composite location are ill-defined, the compiler should bail7# out of emitting a location.8#9# CHECK: .debug_info contents:10# CHECK: DW_TAG_variable11# CHECK-NOT: DW_AT_location12# CHECK: DW_TAG13--- |14 ; Generated from:15 ; typedef float vec2 __attribute__((vector_size(16)));16 ; vec2 v();17 ; float f() {18 ; vec2 vec = v();19 ; return vec[0] + vec[1];20 ; }21 22 target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"23 target triple = "thumbv7s-apple-ios5.0.0"24 25 define float @f() local_unnamed_addr #0 !dbg !9 {26 entry:27 %call = tail call <4 x float> @v() #0, !dbg !1928 tail call void @llvm.dbg.value(metadata <4 x float> %call, i64 0, metadata !14, metadata !20), !dbg !2129 %vecext = extractelement <4 x float> %call, i32 0, !dbg !2230 %vecext1 = extractelement <4 x float> %call, i32 1, !dbg !2331 %add = fadd float %vecext, %vecext1, !dbg !2432 ret float %add, !dbg !2533 }34 35 declare arm_aapcs_vfpcc <4 x float> @v(...) local_unnamed_addr #036 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #037 38 attributes #0 = { nounwind readnone }39 40 !llvm.dbg.cu = !{!0}41 !llvm.module.flags = !{!3, !4}42 !llvm.ident = !{!8}43 44 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 286322) (llvm/trunk 286305)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)45 !1 = !DIFile(filename: "v.c", directory: "/")46 !2 = !{}47 !3 = !{i32 2, !"Dwarf Version", i32 2}48 !4 = !{i32 2, !"Debug Info Version", i32 3}49 !8 = !{!"clang version 4.0.0 (trunk 286322) (llvm/trunk 286305)"}50 !9 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !10, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, retainedNodes: !13)51 !10 = !DISubroutineType(types: !11)52 !11 = !{!12}53 !12 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)54 !13 = !{!14}55 !14 = !DILocalVariable(name: "vec", scope: !9, file: !1, line: 4, type: !15)56 !15 = !DIDerivedType(tag: DW_TAG_typedef, name: "vec2", file: !1, line: 1, baseType: !16)57 !16 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, flags: DIFlagVector, elements: !17)58 !17 = !{!18}59 !18 = !DISubrange(count: 4)60 !19 = !DILocation(line: 4, column: 13, scope: !9)61 !20 = !DIExpression(DW_OP_plus_uconst, 1, DW_OP_constu, 1, DW_OP_minus)62 !21 = !DILocation(line: 4, column: 7, scope: !9)63 !22 = !DILocation(line: 5, column: 9, scope: !9)64 !23 = !DILocation(line: 5, column: 18, scope: !9)65 !24 = !DILocation(line: 5, column: 16, scope: !9)66 !25 = !DILocation(line: 5, column: 2, scope: !9)67 68...69---70name: f71alignment: 272exposesReturnsTwice: false73legalized: false74regBankSelected: false75selected: false76tracksRegLiveness: true77calleeSavedRegisters: [ '$lr', '$d8', '$d9', '$d10', '$d11', '$d12', '$d13', 78 '$d14', '$d15', '$q4', '$q5', '$q6', '$q7', '$r4', 79 '$r5', '$r6', '$r7', '$r8', '$r10', '$r11', '$s16', 80 '$s17', '$s18', '$s19', '$s20', '$s21', '$s22', 81 '$s23', '$s24', '$s25', '$s26', '$s27', '$s28', 82 '$s29', '$s30', '$s31', '$d8_d10', '$d9_d11', '$d10_d12', 83 '$d11_d13', '$d12_d14', '$d13_d15', '$q4_q5', '$q5_q6', 84 '$q6_q7', '$q4_q5_q6_q7', '$r4_r5', '$r6_r7', '$r10_r11', 85 '$d8_d9_d10', '$d9_d10_d11', '$d10_d11_d12', '$d11_d12_d13', 86 '$d12_d13_d14', '$d13_d14_d15', '$d8_d10_d12', 87 '$d9_d11_d13', '$d10_d12_d14', '$d11_d13_d15', 88 '$d8_d10_d12_d14', '$d9_d11_d13_d15', '$d9_d10', 89 '$d11_d12', '$d13_d14', '$d9_d10_d11_d12', '$d11_d12_d13_d14' ]90frameInfo: 91 isFrameAddressTaken: false92 isReturnAddressTaken: false93 hasStackMap: false94 hasPatchPoint: false95 stackSize: 496 offsetAdjustment: 097 maxAlignment: 498 adjustsStack: true99 hasCalls: true100 maxCallFrameSize: 0101 hasOpaqueSPAdjustment: false102 hasVAStart: false103 hasMustTailInVarArgFunc: false104stack: 105 - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr' }106body: |107 bb.0.entry:108 liveins: $lr109 110 early-clobber $sp = frame-setup t2STR_PRE killed undef $lr, $sp, -4, 14, _111 frame-setup CFI_INSTRUCTION def_cfa_offset 4112 frame-setup CFI_INSTRUCTION offset $lr, -4113 tBL 14, _, @v, csr_ios, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0, implicit-def $r1, implicit-def $r2, implicit-def $r3, debug-location !19114 $d1 = VMOVDRR killed $r2, killed $r3, 14, _, implicit-def $q0, debug-location !19115 $d0 = VMOVDRR killed $r0, killed $r1, 14, _, implicit killed $q0, implicit-def $q0, debug-location !19116 DBG_VALUE $q0, _, !14, !20, debug-location !21117 $s4 = VMOVS $s1, 14, _, implicit-def $d2, debug-location !24118 $d0 = VADDfd $d0, killed $d2, 14, _, implicit killed $q0, debug-location !24119 $r0 = VMOVRS $s0, 14, _, implicit killed $d0, debug-location !25120 $lr, $sp = t2LDR_POST $sp, 4, 14, _, debug-location !25121 tBX_RET 14, _, implicit $r0, debug-location !25122 123...124