1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -S -simplifycfg | FileCheck %s
3
4; This test case was generated from speculate-dbgvalue.c:
5;
6;   int test1(int getdirt, int dirt) {
7;     int result = 100;
8;     if (getdirt != 0)
9;       result = dirt;
10;     return result;
11;   }
12;
13; using
14;   clang speculate-dbgvalue.c -S -emit-llvm -g -O3 -mllvm -disable-llvm-optzns -o - | opt -mem2reg -S
15
16
17; Function Attrs: nounwind uwtable
18define i32 @test1(i32 %getdirt, i32 %dirt) #0 !dbg !7 {
19; CHECK-LABEL: @test1(
20; CHECK-NEXT:  entry:
21; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[GETDIRT:%.*]], metadata !12, metadata !DIExpression()), !dbg !15
22; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[DIRT:%.*]], metadata !13, metadata !DIExpression()), !dbg !16
23; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17
24; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[GETDIRT]], 0, !dbg !18
25; *** We used to get an incorrect "call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14, metadata !DIExpression()), !dbg !17" here, before the select. ***
26; CHECK-NOT:     call void @llvm.dbg.value(metadata i32 [[DIRT]], metadata !14
27; CHECK-NEXT:    [[RESULT:%.*]] = select i1 [[CMP]], i32 [[DIRT]], i32 100, !dbg !20
28; CHECK-NEXT:    call void @llvm.dbg.value(metadata i32 [[RESULT]], metadata !14, metadata !DIExpression()), !dbg !17
29; CHECK-NEXT:    ret i32 [[RESULT]], !dbg !21
30; CHECK: !12 = !DILocalVariable(name: "getdirt"
31; CHECK: !13 = !DILocalVariable(name: "dirt"
32; CHECK: !14 = !DILocalVariable(name: "result"
33;
34entry:
35  call void @llvm.dbg.value(metadata i32 %getdirt, metadata !12, metadata !DIExpression()), !dbg !15
36  call void @llvm.dbg.value(metadata i32 %dirt, metadata !13, metadata !DIExpression()), !dbg !16
37  call void @llvm.dbg.value(metadata i32 100, metadata !14, metadata !DIExpression()), !dbg !17
38  %cmp = icmp ne i32 %getdirt, 0, !dbg !18
39  br i1 %cmp, label %if.then, label %if.end, !dbg !20
40
41if.then:                                          ; preds = %entry
42  call void @llvm.dbg.value(metadata i32 %dirt, metadata !14, metadata !DIExpression()), !dbg !17
43  br label %if.end, !dbg !21
44
45if.end:                                           ; preds = %if.then, %entry
46  %result.0 = phi i32 [ %dirt, %if.then ], [ 100, %entry ]
47  call void @llvm.dbg.value(metadata i32 %result.0, metadata !14, metadata !DIExpression()), !dbg !17
48  ret i32 %result.0, !dbg !22
49}
50
51; Function Attrs: nounwind readnone speculatable
52declare void @llvm.dbg.value(metadata, metadata, metadata) #1
53
54attributes #0 = { nounwind uwtable }
55attributes #1 = { nounwind readnone speculatable }
56
57!llvm.dbg.cu = !{!0}
58!llvm.module.flags = !{!3, !4, !5}
59!llvm.ident = !{!6}
60
61!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
62!1 = !DIFile(filename: "speculate-dbgvalue.c", directory: "/foo")
63!2 = !{}
64!3 = !{i32 2, !"Dwarf Version", i32 4}
65!4 = !{i32 2, !"Debug Info Version", i32 3}
66!5 = !{i32 1, !"wchar_size", i32 4}
67!6 = !{!"clang version 6.0.0"}
68!7 = distinct !DISubprogram(name: "test1", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
69!8 = !DISubroutineType(types: !9)
70!9 = !{!10, !10, !10}
71!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
72!11 = !{!12, !13, !14}
73!12 = !DILocalVariable(name: "getdirt", arg: 1, scope: !7, file: !1, line: 1, type: !10)
74!13 = !DILocalVariable(name: "dirt", arg: 2, scope: !7, file: !1, line: 1, type: !10)
75!14 = !DILocalVariable(name: "result", scope: !7, file: !1, line: 2, type: !10)
76!15 = !DILocation(line: 1, column: 15, scope: !7)
77!16 = !DILocation(line: 1, column: 28, scope: !7)
78!17 = !DILocation(line: 2, column: 7, scope: !7)
79!18 = !DILocation(line: 3, column: 15, scope: !19)
80!19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 7)
81!20 = !DILocation(line: 3, column: 7, scope: !7)
82!21 = !DILocation(line: 4, column: 5, scope: !19)
83!22 = !DILocation(line: 5, column: 3, scope: !7)
84