1 ; REQUIRES: object-emission
3 ; RUN: llc -mtriple=i386-linux-gnu -filetype=obj -relocation-model=pic %s -o /dev/null
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.
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
17 ; $ clang-tot -cc1 -triple i386 -emit-obj -g -O3 repro.cpp
18 ; void sink(const void *);
30 ; inline __attribute__((always_inline)) void s2(string *lhs) { sink(lhs->mem); }
31 ; inline __attribute__((always_inline)) void f() {
36 ; void __attribute__((nodebug)) f1() {
37 ; for (int iter = 0; iter != 2; ++iter) {
44 %struct.string = type { i32* }
46 @str = external constant %struct.string*
47 @b = external global i8
49 ; Function Attrs: nounwind
50 define void @_Z2f1v() #0 {
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
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, metadata !16, metadata !DIExpression(DW_OP_deref)) #3, !dbg !26
62 call void @llvm.dbg.value(metadata %struct.string* %str2.i, 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
76 for.end: ; preds = %for.body
80 declare void @_Z4sinkPKv(i8*) #1
82 ; Function Attrs: nounwind readnone
83 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
85 ; Function Attrs: nounwind
86 declare void @llvm.lifetime.start(i64, i8* nocapture) #3
88 ; Function Attrs: nounwind
89 declare void @llvm.lifetime.end(i64, i8* nocapture) #3
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 }
97 !llvm.module.flags = !{!23, !24}
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")
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")
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, retainedNodes: !15)
111 !12 = !DIFile(filename: "repro.cpp", directory: "/tmp/dbginfo")
112 !13 = !DISubroutineType(types: !14)
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, retainedNodes: !21)
117 !18 = !DISubroutineType(types: !19)
119 !20 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !4)
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 = !{!"struct", !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}