1 ; REQUIRES: object-emission 2 3 ; RUN: llc -mtriple=i386-linux-gnu -filetype=obj -relocation-model=pic %s -o /dev/null 4 5 ; Derived from the test case in PR20367, there's nothing really positive to 6 ; test here (hence no FileCheck, etc). All that was wrong is that the debug info 7 ; intrinsics (introduced by inlining) in 'f1' were causing codegen to crash, but 8 ; since 'f1' is a nodebug function, there's no positive outcome to confirm, just 9 ; that debug info doesn't get in the way/cause a crash. 10 11 ; The test case isn't particularly well reduced/tidy, but as simple as I could 12 ; get the C++ source. I assume the complexity is mostly just about producing a 13 ; certain amount of register pressure, so it might be able to be simplified/made 14 ; more uniform. 15 16 ; Generated from: 17 ; $ clang-tot -cc1 -triple i386 -emit-obj -g -O3 repro.cpp 18 ; void sink(const void *); 19 ; int source(); 20 ; void f3(int); 21 ; 22 ; extern bool b; 23 ; 24 ; struct string { 25 ; unsigned *mem; 26 ; }; 27 ; 28 ; extern string &str; 29 ; 30 ; inline __attribute__((always_inline)) void s2(string *lhs) { sink(lhs->mem); } 31 ; inline __attribute__((always_inline)) void f() { 32 ; string str2; 33 ; s2(&str2); 34 ; sink(&str2); 35 ; } 36 ; void __attribute__((nodebug)) f1() { 37 ; for (int iter = 0; iter != 2; ++iter) { 38 ; f(); 39 ; sink(str.mem); 40 ; if (b) return; 41 ; } 42 ; } 43 44 %struct.string = type { i32* } 45 46 @str = external constant %struct.string* 47 @b = external global i8 48 49 ; Function Attrs: nounwind 50 define void @_Z2f1v() #0 { 51 entry: 52 %str2.i = alloca %struct.string, align 4 53 %0 = bitcast %struct.string* %str2.i to i8*, !dbg !26 54 %1 = load %struct.string*, %struct.string** @str, align 4 55 %mem = getelementptr inbounds %struct.string, %struct.string* %1, i32 0, i32 0 56 br label %for.body 57 58 for.body: ; preds = %for.body, %entry 59 %iter.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 60 call void @llvm.lifetime.start(i64 4, i8* %0), !dbg !26 61 call void @llvm.dbg.value(metadata %struct.string* %str2.i, i64 0, metadata !16, metadata !DIExpression(DW_OP_deref)) #3, !dbg !26 62 call void @llvm.dbg.value(metadata %struct.string* %str2.i, i64 0, metadata !27, metadata !DIExpression(DW_OP_deref)) #3, !dbg !29 63 call void @_Z4sinkPKv(i8* undef) #3, !dbg !29 64 call void @_Z4sinkPKv(i8* %0) #3, !dbg !30 65 call void @llvm.lifetime.end(i64 4, i8* %0), !dbg !31 66 %2 = load i32*, i32** %mem, align 4, !tbaa !32 67 %3 = bitcast i32* %2 to i8* 68 call void @_Z4sinkPKv(i8* %3) #3 69 %4 = load i8, i8* @b, align 1, !tbaa !37, !range !39 70 %tobool = icmp ne i8 %4, 0 71 %inc = add nsw i32 %iter.02, 1 72 %cmp = icmp eq i32 %inc, 2 73 %or.cond = or i1 %tobool, %cmp 74 br i1 %or.cond, label %for.end, label %for.body 75 76 for.end: ; preds = %for.body 77 ret void 78 } 79 80 declare void @_Z4sinkPKv(i8*) #1 81 82 ; Function Attrs: nounwind readnone 83 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 84 85 ; Function Attrs: nounwind 86 declare void @llvm.lifetime.start(i64, i8* nocapture) #3 87 88 ; Function Attrs: nounwind 89 declare void @llvm.lifetime.end(i64, i8* nocapture) #3 90 91 attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 92 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 93 attributes #2 = { nounwind readnone } 94 attributes #3 = { nounwind } 95 96 !llvm.dbg.cu = !{!0} 97 !llvm.module.flags = !{!23, !24} 98 !llvm.ident = !{!25} 99 100 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2) 101 !1 = !DIFile(filename: "<stdin>", directory: "/tmp/dbginfo") 102 !2 = !{} 103 !3 = !{!4} 104 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "string", line: 7, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS6string") 105 !5 = !DIFile(filename: "repro.cpp", directory: "/tmp/dbginfo") 106 !6 = !{!7} 107 !7 = !DIDerivedType(tag: DW_TAG_member, name: "mem", line: 8, size: 32, align: 32, file: !5, scope: !4, baseType: !8) 108 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !9) 109 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) 110 !11 = distinct !DISubprogram(name: "f", linkageName: "_Z1fv", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 14, file: !5, scope: !12, type: !13, variables: !15) 111 !12 = !DIFile(filename: "repro.cpp", directory: "/tmp/dbginfo") 112 !13 = !DISubroutineType(types: !14) 113 !14 = !{null} 114 !15 = !{!16} 115 !16 = !DILocalVariable(name: "str2", line: 15, scope: !11, file: !12, type: !4) 116 !17 = distinct !DISubprogram(name: "s2", linkageName: "_Z2s2P6string", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 13, file: !5, scope: !12, type: !18, variables: !21) 117 !18 = !DISubroutineType(types: !19) 118 !19 = !{null, !20} 119 !20 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !4) 120 !21 = !{!22} 121 !22 = !DILocalVariable(name: "lhs", line: 13, arg: 1, scope: !17, file: !12, type: !20) 122 !23 = !{i32 2, !"Dwarf Version", i32 4} 123 !24 = !{i32 2, !"Debug Info Version", i32 3} 124 !25 = !{!"clang version 3.5.0 "} 125 !26 = !DILocation(line: 15, scope: !11) 126 !27 = !DILocalVariable(name: "lhs", line: 13, arg: 1, scope: !17, file: !12, type: !20) 127 !28 = !DILocation(line: 16, scope: !11) 128 !29 = !DILocation(line: 13, scope: !17, inlinedAt: !28) 129 !30 = !DILocation(line: 17, scope: !11) 130 !31 = !DILocation(line: 18, scope: !11) 131 !32 = !{!33, !34, i64 0} 132 !33 = !{!4, !34, i64 0} 133 !34 = !{!"any pointer", !35, i64 0} 134 !35 = !{!"omnipotent char", !36, i64 0} 135 !36 = !{!"Simple C/C++ TBAA"} 136 !37 = !{!38, !38, i64 0} 137 !38 = !{!"bool", !35, i64 0} 138 !39 = !{i8 0, i8 2} 139
