1 ; RUN: opt -S < %s -passes='function(mem2reg),require<verify>' | FileCheck %s
2 ; RUN: opt -S < %s -passes='function(mem2reg),require<verify>' --try-experimental-debuginfo-iterators | FileCheck %s
4 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5 target triple = "x86_64-apple-macosx10.13.0"
7 ; Original source (with some whitespace removed):
11 ; int get1() { return *getp(); }
12 ; int get2(int *p) { return *p; }
14 ; if (cond()) return get1();
15 ; else return get2(p);
18 define i32 @get1() !dbg !8 {
19 %1 = call ptr (...) @getp(), !dbg !12
20 %2 = load i32, ptr %1, align 4, !dbg !13
24 declare ptr @getp(...)
26 define i32 @get2(ptr) !dbg !15 {
27 %2 = alloca ptr, align 8
28 store ptr %0, ptr %2, align 8
29 call void @llvm.dbg.declare(metadata ptr %2, metadata !19, metadata !DIExpression()), !dbg !20
30 %3 = load ptr, ptr %2, align 8, !dbg !21
31 %4 = load i32, ptr %3, align 4, !dbg !22
35 declare void @llvm.dbg.declare(metadata, metadata, metadata)
37 ; CHECK-LABEL: define i32 @bug
38 define i32 @bug(ptr) !dbg !24 {
39 %2 = alloca i32, align 4
40 %3 = alloca ptr, align 8
41 store ptr %0, ptr %3, align 8
42 call void @llvm.dbg.declare(metadata ptr %3, metadata !25, metadata !DIExpression()), !dbg !26
43 %4 = call i32 (...) @cond(), !dbg !27
44 %5 = icmp ne i32 %4, 0, !dbg !27
45 br i1 %5, label %6, label %8, !dbg !29
47 ; <label>:6: ; preds = %1
48 %7 = call i32 @get1(), !dbg !30
49 store i32 %7, ptr %2, align 4, !dbg !31
50 br label %11, !dbg !31
52 ; <label>:8: ; preds = %1
53 %9 = load ptr, ptr %3, align 8, !dbg !32
54 %10 = call i32 @get2(ptr %9), !dbg !33
55 store i32 %10, ptr %2, align 4, !dbg !34
56 br label %11, !dbg !34
58 ; <label>:11: ; preds = %8, %6
59 %12 = load i32, ptr %2, align 4, !dbg !35
62 ; CHECK: [[phi:%.*]] = phi i32 [ {{.*}} ], [ {{.*}} ], !dbg [[mergedLoc:![0-9]+]]
63 ; CHECK-NEXT: ret i32 [[phi]], !dbg [[retLoc:![0-9]+]]
66 ; CHECK: [[commonScope:![0-9]+]] = distinct !DILexicalBlock(scope: {{.*}}, file: !1, line: 15, column: 7)
67 ; CHECK: [[mergedLoc]] = !DILocation(line: 0, scope: [[commonScope]])
68 ; CHECK: [[retLoc]] = !DILocation(line: 23, column: 1
70 declare i32 @cond(...)
73 !llvm.module.flags = !{!3, !4, !5, !6}
76 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "Apple LLVM version 9.1.0 (clang-902.2.37.2)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
77 !1 = !DIFile(filename: "bug.c", directory: "/bug")
79 !3 = !{i32 2, !"Dwarf Version", i32 4}
80 !4 = !{i32 2, !"Debug Info Version", i32 3}
81 !5 = !{i32 1, !"wchar_size", i32 4}
82 !6 = !{i32 7, !"PIC Level", i32 2}
83 !7 = !{!"Apple LLVM version 9.1.0 (clang-902.2.37.2)"}
84 !8 = distinct !DISubprogram(name: "get1", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: false, unit: !0, retainedNodes: !2)
85 !9 = !DISubroutineType(types: !10)
87 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
88 !12 = !DILocation(line: 7, column: 11, scope: !8)
89 !13 = !DILocation(line: 7, column: 10, scope: !8)
90 !14 = !DILocation(line: 7, column: 3, scope: !8)
91 !15 = distinct !DISubprogram(name: "get2", scope: !1, file: !1, line: 10, type: !16, isLocal: false, isDefinition: true, scopeLine: 10, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
92 !16 = !DISubroutineType(types: !17)
94 !18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
95 !19 = !DILocalVariable(name: "p", arg: 1, scope: !15, file: !1, line: 10, type: !18)
96 !20 = !DILocation(line: 10, column: 15, scope: !15)
97 !21 = !DILocation(line: 11, column: 11, scope: !15)
98 !22 = !DILocation(line: 11, column: 10, scope: !15)
99 !23 = !DILocation(line: 11, column: 3, scope: !15)
100 !24 = distinct !DISubprogram(name: "bug", scope: !1, file: !1, line: 14, type: !16, isLocal: false, isDefinition: true, scopeLine: 14, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
101 !25 = !DILocalVariable(name: "p", arg: 1, scope: !24, file: !1, line: 14, type: !18)
102 !26 = !DILocation(line: 14, column: 14, scope: !24)
103 !27 = !DILocation(line: 15, column: 7, scope: !28)
104 !28 = distinct !DILexicalBlock(scope: !24, file: !1, line: 15, column: 7)
105 !29 = !DILocation(line: 15, column: 7, scope: !24)
106 !30 = !DILocation(line: 16, column: 12, scope: !28)
107 !31 = !DILocation(line: 16, column: 5, scope: !28)
108 !32 = !DILocation(line: 18, column: 17, scope: !28)
109 !33 = !DILocation(line: 18, column: 12, scope: !28)
110 !34 = !DILocation(line: 18, column: 5, scope: !28)
111 !35 = !DILocation(line: 23, column: 1, scope: !24)