1 ; RUN: opt < %s -S -mem2reg -instcombine | FileCheck %s
3 ; The '%bar' alloca will be promoted to an SSA register by mem2reg: test that
4 ; zero line number are assigned to the dbg.value intrinsics that are inserted
5 ; to represent changes in variable value. No machine instructions are
6 ; generated from these dbg.values so their lines are irrelevant, only the
7 ; scope and inlining information must be correct.
9 ; In the second function here, LowerDbgDeclare will promote various variable
10 ; accesses of a dbg.declare'd alloca into dbg.values. Check that their line
11 ; numbers are sane too. (IR copied from DebugInfo/X86/formal_parameter.ll).
13 ; CHECK-LABEL: define i32 @foo
16 ; CHECK-NEXT: %bar.0 = phi i32
17 ; CHECK-NEXT: dbg.value(metadata i32 %bar.0,{{.*}}), !dbg ![[UNKNOWN:[0-9]+]]
18 ; CHECK-NEXT: %totest = load
19 ; CHECK-NEXT: %add = add i32 %bar.0
20 ; CHECK-NEXT: dbg.value(metadata i32 %add, {{.*}}), !dbg ![[UNKNOWN]]
21 ; CHECK-NEXT: %cond = icmp ult
22 ; CHECK-NEXT: br i1 %cond, label %bb1, label %bb2
25 ; CHECK-NEXT: %toret = add i32 %bar.0, 3
26 ; CHECK-NEXT: dbg.value(metadata i32 %toret, {{.*}}), !dbg ![[UNKNOWN]]
27 ; CHECK-NEXT: ret i32 %toret
29 define i32 @foo(i32 *%bees, i32 *%output) {
32 call void @llvm.dbg.declare(metadata i32 *%bar, metadata !7, metadata !DIExpression()), !dbg !6
33 store i32 0, i32 *%bar
34 br label %bb1, !dbg !6
37 %totest = load i32, i32 *%bees, !dbg !8
38 %load1 = load i32, i32 *%bar, !dbg !9
39 %add = add i32 %load1, 1, !dbg !10
40 store i32 %add, i32 *%bar, !dbg !11
41 %toret = add i32 %add, 2, !dbg !12
42 %cond = icmp ult i32 %totest, %load1, !dbg !13
43 br i1 %cond, label %bb1, label %bb2, !dbg !14
46 store i32 %toret, i32 *%bar, !dbg !16
50 ; In the following, the dbg.value created for the store should get the stores
51 ; line number, the other dbg.values should be unknown.
52 ; CHECK-LABEL: define void @bar
54 ; CHECK: dbg.value(metadata i32 %map, metadata ![[MAPVAR:[0-9]+]],{{.*}}),
55 ; CHECK-SAME: !dbg ![[UNKNOWN2:[0-9]+]]
57 ; CHECK-NEXT: dbg.value(metadata i32* %map.addr, metadata ![[MAPVAR]],
58 ; CHECK-SAME: metadata !DIExpression(DW_OP_deref)),
59 ; CHECK-SAME: !dbg ![[UNKNOWN2]]
62 ; CHECK-NEXT: dbg.value(metadata i32 %{{[0-9]+}}, metadata ![[MAPVAR]],
63 ; CHECK-SAME: !dbg ![[UNKNOWN2]]
65 define void @bar(i32 %map) !dbg !20 {
67 %map.addr = alloca i32, align 4
68 store i32 %map, i32* %map.addr, align 4, !dbg !27
69 call void @llvm.dbg.declare(metadata i32* %map.addr, metadata !21, metadata !DIExpression()), !dbg !22
70 %call = call i32 (i32*, ...) bitcast (i32 (...)* @lookup to i32 (i32*, ...)*)(i32* %map.addr), !dbg !23
71 %0 = load i32, i32* %map.addr, align 4, !dbg !24
72 %call1 = call i32 (i32, ...) bitcast (i32 (...)* @verify to i32 (i32, ...)*)(i32 %0), !dbg !25
76 declare void @llvm.dbg.value(metadata, metadata, metadata)
77 declare void @llvm.dbg.declare(metadata, metadata, metadata)
78 declare i32 @verify(...)
79 declare i32 @lookup(...)
81 ; CHECK: ![[SUBPROG:[0-9]+]] = distinct !DISubprogram(name: "nope",
82 ; CHECK: ![[UNKNOWN]] = !DILocation(line: 0, scope: ![[SUBPROG]])
84 ; CHECK: ![[SUBPROG2:[0-9]+]] = distinct !DISubprogram(name: "thin",
85 ; CHECK: ![[MAPVAR]] = !DILocalVariable(name: "floogie",
86 ; CHECK: ![[UNKNOWN2]] = !DILocation(line: 0
88 !llvm.module.flags = !{!4}
90 !1 = !DILocalVariable(name: "bees", scope: !5, type: null)
91 !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "beards", isOptimized: true, runtimeVersion: 4, emissionKind: FullDebug)
92 !3 = !DIFile(filename: "bees.cpp", directory: "")
93 !4 = !{i32 2, !"Debug Info Version", i32 3}
94 !5 = distinct !DISubprogram(name: "nope", scope: !3, file: !3, line: 1, unit: !2)
95 !6 = !DILocation(line: 1, scope: !5)
96 !7 = !DILocalVariable(name: "flannel", scope: !5, type: null)
97 !8 = !DILocation(line: 2, scope: !5)
98 !9 = !DILocation(line: 3, scope: !5)
99 !10 = !DILocation(line: 4, scope: !5)
100 !11 = !DILocation(line: 5, scope: !5)
101 !12 = !DILocation(line: 6, scope: !5)
102 !13 = !DILocation(line: 7, scope: !5)
103 !14 = !DILocation(line: 8, scope: !5)
104 !15 = distinct !DISubprogram(name: "wat", scope: !2, file: !3, line: 10, unit: !2)
105 !16 = !DILocation(line: 9, scope: !15, inlinedAt: !14)
106 !20 = distinct !DISubprogram(name: "thin", scope: !3, file: !3, line: 20, unit: !2)
107 !21 = !DILocalVariable(name: "floogie", scope: !20, type: null)
108 !22 = !DILocation(line: 21, scope: !20)
109 !23 = !DILocation(line: 22, scope: !20)
110 !24 = !DILocation(line: 23, scope: !20)
111 !25 = !DILocation(line: 24, scope: !20)
112 !26 = !DILocation(line: 25, scope: !20)
113 !27 = !DILocation(line: 20, scope: !20)