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: FullDebug, enums: !2, retainedTypes: !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)"} 93