test/DebugInfo/Generic/accel-table-hash-collisions.ll

   1 ; REQUIRES: object-emission
   2 ; RUN: %llc_dwarf -dwarf-accel-tables=Enable -filetype=obj -o - < %s | llvm-dwarfdump -debug-dump=apple_names - | FileCheck %s
   3
   4 ; Generated from the following C code using
   5 ; clang -S -emit-llvm hash-collision.c
   6 ;
   7 ; The names of the variables have been chosen so that they produce hash collisions.
   8 ; There are 12 names here that are hashed to only 6 hashes (each pair of lines
   9 ; hashes to the same value, see the CHECK lines below).
  10 ;
  11 ; int ForceTopDown;
  12 ; int _ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_;
  13 ; int _ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE;
  14 ; int _ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv;
  15 ; int _ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE;
  16 ; int _ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE;
  17 ; int k1;
  18 ; int is;
  19 ; int setStmt;
  20 ; int _ZN4llvm5TwineC1Ei;
  21 ; int _ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE;
  22 ; int _ZN4llvm22MachineModuleInfoMachOD2Ev;
  23
  24 ; Check that we have the right amount of hashes.
  25 ; CHECK: Bucket count = 6
  26 ; CHECK: Hashes count = 6
  27
  28 ; Check that all the names are present in the output
  29 ; CHECK:  Hash = 0x00597841
  30 ; CHECK:    Name: {{[0-9a-f]*}} "is"
  31 ; CHECK:    Name: {{[0-9a-f]*}} "k1"
  32
  33 ; CHECK: Hash = 0xa4b42a1e
  34 ; CHECK:    Name: {{[0-9a-f]*}} "_ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE"
  35 ; CHECK:    Name: {{[0-9a-f]*}} "_ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv"
  36
  37 ; CHECK: Hash = 0xeee7c0b2
  38 ; CHECK:    Name: {{[0-9a-f]*}} "_ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE"
  39 ; CHECK:    Name: {{[0-9a-f]*}} "_ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE"
  40
  41 ; CHECK: Hash = 0xea48ac5f
  42 ; CHECK:    Name: {{[0-9a-f]*}} "ForceTopDown"
  43 ; CHECK:    Name: {{[0-9a-f]*}} "_ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_"
  44
  45 ; CHECK:  Hash = 0x6b22f71f
  46 ; CHECK:    Name: {{[0-9a-f]*}} "_ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE"
  47 ; CHECK:    Name: {{[0-9a-f]*}} "_ZN4llvm22MachineModuleInfoMachOD2Ev"
  48
  49 ; CHECK:  Hash = 0x8c248979
  50 ; CHECK:    Name: {{[0-9a-f]*}} "setStmt"
  51 ; CHECK:    Name: {{[0-9a-f]*}} "_ZN4llvm5TwineC1Ei"
  52
  53
  54
  55 @ForceTopDown = common global i32 0, align 4
  56 @_ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_ = common global i32 0, align 4
  57 @_ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE = common global i32 0, align 4
  58 @_ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv = common global i32 0, align 4
  59 @_ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE = common global i32 0, align 4
  60 @_ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE = common global i32 0, align 4
  61 @k1 = common global i32 0, align 4
  62 @is = common global i32 0, align 4
  63 @setStmt = common global i32 0, align 4
  64 @_ZN4llvm5TwineC1Ei = common global i32 0, align 4
  65 @_ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE = common global i32 0, align 4
  66 @_ZN4llvm22MachineModuleInfoMachOD2Ev = common global i32 0, align 4
  67
  68 !llvm.dbg.cu = !{!0}
  69 !llvm.module.flags = !{!17, !18, !19}
  70 !llvm.ident = !{!20}
  71
  72 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 231548) (llvm/trunk 231547)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
  73 !1 = !DIFile(filename: "hash-collisions.c", directory: "/tmp")
  74 !2 = !{}
  75 !3 = !{!4, !6, !7, !8, !9, !10, !11, !12, !13, !14, !15, !16}
  76 !4 = !DIGlobalVariable(name: "ForceTopDown", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, variable: i32* @ForceTopDown)
  77 !5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
  78 !6 = !DIGlobalVariable(name: "_ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZNSt3__116allocator_traitsINS_9allocatorINS_11__tree_nodeINS_12__value_typeIPN4llvm10BasicBlockEPNS4_10RegionNodeEEEPvEEEEE11__constructIS9_JNS_4pairIS6_S8_EEEEEvNS_17integral_constantIbLb1EEERSC_PT_DpOT0_)
  79 !7 = !DIGlobalVariable(name: "_ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE", scope: !0, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZN5clang23DataRecursiveASTVisitorIN12_GLOBAL__N_124UnusedBackingIvarCheckerEE26TraverseCUDAKernelCallExprEPNS_18CUDAKernelCallExprE)
  80 !8 = !DIGlobalVariable(name: "_ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv", scope: !0, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZN4llvm16DenseMapIteratorIPNS_10MDLocationENS_6detail13DenseSetEmptyENS_10MDNodeInfoIS1_EENS3_12DenseSetPairIS2_EELb0EE23AdvancePastEmptyBucketsEv)
  81 !9 = !DIGlobalVariable(name: "_ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE", scope: !0, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZNK4llvm12LivePhysRegs5printERNS_11raw_ostreamE)
  82 !10 = !DIGlobalVariable(name: "_ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE", scope: !0, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZN4llvm15ScalarEvolution14getSignedRangeEPKNS_4SCEVE)
  83 !11 = !DIGlobalVariable(name: "k1", scope: !0, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true, variable: i32* @k1)
  84 !12 = !DIGlobalVariable(name: "is", scope: !0, file: !1, line: 8, type: !5, isLocal: false, isDefinition: true, variable: i32* @is)
  85 !13 = !DIGlobalVariable(name: "setStmt", scope: !0, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true, variable: i32* @setStmt)
  86 !14 = !DIGlobalVariable(name: "_ZN4llvm5TwineC1Ei", scope: !0, file: !1, line: 10, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZN4llvm5TwineC1Ei)
  87 !15 = !DIGlobalVariable(name: "_ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE", scope: !0, file: !1, line: 11, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZNK5clang12OverrideAttr5cloneERNS_10ASTContextE)
  88 !16 = !DIGlobalVariable(name: "_ZN4llvm22MachineModuleInfoMachOD2Ev", scope: !0, file: !1, line: 12, type: !5, isLocal: false, isDefinition: true, variable: i32* @_ZN4llvm22MachineModuleInfoMachOD2Ev)
  89 !17 = !{i32 2, !"Dwarf Version", i32 2}
  90 !18 = !{i32 2, !"Debug Info Version", i32 3}
  91 !19 = !{i32 1, !"PIC Level", i32 2}
  92 !20 = !{!"clang version 3.7.0 (trunk 231548) (llvm/trunk 231547)"}