1 ; RUN: llc -mtriple x86_64-pc-linux -O0 < %s | FileCheck %s
2 ; RUN: llc --try-experimental-debuginfo-iterators -mtriple x86_64-pc-linux -O0 < %s | FileCheck %s
4 ; Make sure that the sequence of debug locations for function foo is correctly
5 ; generated. More specifically, .loc entries for lines 4,5,6,7 must appear in
6 ; the correct sequence.
8 ; $ clang -emit-llvm -S -g dbg-combine.c
12 ; 4. int array1[elems];
16 ; 8. int array2[elems];
18 ; 10. return array2[0];
26 ; ModuleID = 'dbg-combine.c'
27 ; Function Attrs: nounwind uwtable
28 define i32 @foo() #0 !dbg !4 {
30 %elems = alloca i32, align 4
31 %saved_stack = alloca ptr
32 %cleanup.dest.slot = alloca i32
33 call void @llvm.dbg.declare(metadata ptr %elems, metadata !12, metadata !13), !dbg !14
34 store i32 3, ptr %elems, align 4, !dbg !14
35 %0 = load i32, ptr %elems, align 4, !dbg !15
36 %1 = zext i32 %0 to i64, !dbg !16
37 %2 = call ptr @llvm.stacksave(), !dbg !16
38 store ptr %2, ptr %saved_stack, !dbg !16
39 %vla = alloca i32, i64 %1, align 16, !dbg !16
40 call void @llvm.dbg.declare(metadata ptr %vla, metadata !17, metadata !21), !dbg !22
41 store i32 0, ptr %vla, align 4, !dbg !24
42 %arrayidx1 = getelementptr inbounds i32, ptr %vla, i64 1, !dbg !25
43 store i32 1, ptr %arrayidx1, align 4, !dbg !26
44 %arrayidx2 = getelementptr inbounds i32, ptr %vla, i64 2, !dbg !27
45 store i32 2, ptr %arrayidx2, align 4, !dbg !28
46 %3 = load i32, ptr %elems, align 4, !dbg !29
47 %4 = zext i32 %3 to i64, !dbg !30
48 %vla3 = alloca i32, i64 %4, align 16, !dbg !30
49 call void @llvm.dbg.declare(metadata ptr %vla3, metadata !31, metadata !21), !dbg !32
50 store i32 1, ptr %vla3, align 4, !dbg !34
51 %5 = load i32, ptr %vla3, align 4, !dbg !35
52 store i32 1, ptr %cleanup.dest.slot
53 %6 = load ptr, ptr %saved_stack, !dbg !36
54 call void @llvm.stackrestore(ptr %6), !dbg !36
58 ; Function Attrs: nounwind readnone
59 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
61 ; Function Attrs: nounwind
62 declare ptr @llvm.stacksave() #2
64 ; Function Attrs: nounwind
65 declare void @llvm.stackrestore(ptr) #2
67 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
68 attributes #1 = { nounwind readnone }
69 attributes #2 = { nounwind }
72 !llvm.module.flags = !{!9, !10}
75 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 227074)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
76 !1 = !DIFile(filename: "dbg-combine.c", directory: "/home/probinson/projects/scratch")
78 !4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2)
79 !5 = !DIFile(filename: "dbg-combine.c", directory: "/home/probinson/projects/scratch")
80 !6 = !DISubroutineType(types: !7)
82 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
83 !9 = !{i32 2, !"Dwarf Version", i32 4}
84 !10 = !{i32 2, !"Debug Info Version", i32 3}
85 !11 = !{!"clang version 3.7.0 (trunk 227074)"}
86 !12 = !DILocalVariable(name: "elems", line: 3, scope: !4, file: !5, type: !8)
88 !14 = !DILocation(line: 3, column: 8, scope: !4)
89 !15 = !DILocation(line: 4, column: 15, scope: !4)
90 !16 = !DILocation(line: 4, column: 4, scope: !4)
91 !17 = !DILocalVariable(name: "array1", line: 4, scope: !4, file: !5, type: !18)
92 !18 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !8, elements: !19)
94 !20 = !DISubrange(count: -1)
95 !21 = !DIExpression(DW_OP_deref)
96 !22 = !DILocation(line: 4, column: 8, scope: !4)
97 !23 = !DILocation(line: 5, column: 4, scope: !4)
98 !24 = !DILocation(line: 5, column: 13, scope: !4)
99 !25 = !DILocation(line: 6, column: 4, scope: !4)
100 !26 = !DILocation(line: 6, column: 13, scope: !4)
101 !27 = !DILocation(line: 7, column: 4, scope: !4)
102 !28 = !DILocation(line: 7, column: 13, scope: !4)
103 !29 = !DILocation(line: 8, column: 15, scope: !4)
104 !30 = !DILocation(line: 8, column: 4, scope: !4)
105 !31 = !DILocalVariable(name: "array2", line: 8, scope: !4, file: !5, type: !18)
106 !32 = !DILocation(line: 8, column: 8, scope: !4)
107 !33 = !DILocation(line: 9, column: 4, scope: !4)
108 !34 = !DILocation(line: 9, column: 13, scope: !4)
109 !35 = !DILocation(line: 10, column: 11, scope: !4)
110 !36 = !DILocation(line: 11, column: 1, scope: !4)