1 ; Checks that llvm.dbg.declare -> llvm.dbg.value conversion utility 2 ; (here exposed through the SROA) pass, properly inserts bit_piece expressions 3 ; if it only describes part of the variable. 4 ; RUN: opt -S -sroa %s | FileCheck %s 5 6 ; Function Attrs: nounwind readnone 7 declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 8 9 ; Function Attrs: nounwind uwtable 10 define hidden void @_ZN6__tsan9FastState14SetHistorySizeEi(i32 %hs) #1 align 2 { 11 entry: 12 %hs.addr = alloca i32, align 4 13 %v1 = alloca i64, align 8 14 %v2 = alloca i64, align 8 15 store i32 %hs, i32* %hs.addr, align 4 16 ; CHECK: call void @llvm.dbg.value(metadata i32 %hs, i64 0, metadata !{{[0-9]+}}, metadata ![[EXPR:[0-9]+]]) 17 ; CHECK: ![[EXPR]] = !DIExpression(DW_OP_bit_piece, 0 18 call void @llvm.dbg.declare(metadata i64* %v1, metadata !9, metadata !12), !dbg !13 19 %0 = load i32, i32* %hs.addr, align 4 20 %conv = sext i32 %0 to i64 21 store i64 %conv, i64* %v1, align 8 22 %1 = load i64, i64* %v2, align 8 23 unreachable 24 } 25 26 attributes #0 = { nounwind readnone } 27 28 !llvm.dbg.cu = !{!0} 29 !llvm.module.flags = !{!7} 30 !llvm.ident = !{!8} 31 32 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 256979) (llvm/trunk 257107)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !2) 33 !1 = !DIFile(filename: "tsan_shadow_test.cc", directory: "/tmp") 34 !2 = !{!3, !5} 35 !3 = !DICompositeType(tag: DW_TAG_class_type, name: "FastState", file: !4, line: 91, size: 64, align: 64, identifier: "_ZTSN6__tsan9FastStateE") 36 !4 = !DIFile(filename: "/mnt/extra/llvm/projects/compiler-rt/lib/tsan/rtl/tsan_rtl.h", directory: "/tmp") 37 !5 = distinct !DIDerivedType(tag: DW_TAG_typedef, name: "u64", line: 78, baseType: !6) 38 !6 = !DIBasicType(name: "long long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned) 39 !7 = !{i32 2, !"Debug Info Version", i32 3} 40 !8 = !{!"clang version 3.8.0 (trunk 256979) (llvm/trunk 257107)"} 41 !9 = !DILocalVariable(name: "v1", scope: !10, file: !4, line: 136, type: !5) 42 !10 = distinct !DILexicalBlock(scope: !11, file: !4, line: 136, column: 5) 43 !11 = distinct !DISubprogram(name: "SetHistorySize", linkageName: "_ZN6__tsan9FastState14SetHistorySizeEi", scope: !3, file: !4, line: 135, isLocal: false, isDefinition: true, scopeLine: 135, flags: DIFlagPrototyped, isOptimized: false, unit: !0) 44 !12 = !DIExpression() 45 !13 = !DILocation(line: 136, column: 5, scope: !10) 46
