1; RUN: opt < %s -simplifycfg -S | FileCheck %s
2
3; Check that the debug location for the hoisted store for "ret = 0" is a
4; line-0 location.
5;
6; int foo(int x) {
7;   int ret = 1;
8;   if (x)
9;     ret = 0;
10;   return ret;
11; }
12;
13; CHECK: store i32 1,{{.+}}!dbg ![[DLOC1:[0-9]+]]
14; CHECK: icmp ne {{.+}}!dbg ![[DLOC2:[0-9]+]]
15; CHECK: [[VREG:%[^ ]+]] = select
16; CHECK: store i32 [[VREG]],{{.*}} !dbg [[storeLoc:![0-9]+]]
17; CHECK: ret {{.+}}!dbg ![[DLOC3:[0-9]+]]
18; CHECK: ![[DLOC1]] = !DILocation(line: 2
19; CHECK: ![[DLOC2]] = !DILocation(line: 3
20; CHECK: [[storeLoc]] = !DILocation(line: 0
21; CHECK: ![[DLOC3]] = !DILocation(line: 5
22
23target triple = "x86_64-unknown-linux-gnu"
24
25; Function Attrs: noinline nounwind uwtable
26define i32 @foo(i32) !dbg !6 {
27  %2 = alloca i32, align 4
28  %3 = alloca i32, align 4
29  store i32 %0, i32* %2, align 4
30  store i32 1, i32* %3, align 4, !dbg !14
31  %4 = load i32, i32* %2, align 4, !dbg !15
32  %5 = icmp ne i32 %4, 0, !dbg !15
33  br i1 %5, label %6, label %7, !dbg !17
34
35; <label>:6:                                      ; preds = %1
36  store i32 0, i32* %3, align 4, !dbg !18
37  br label %7, !dbg !19
38
39; <label>:7:                                      ; preds = %6, %1
40  %8 = load i32, i32* %3, align 4, !dbg !20
41  ret i32 %8, !dbg !21
42}
43
44!llvm.dbg.cu = !{!0}
45!llvm.module.flags = !{!3, !4}
46
47!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
48!1 = !DIFile(filename: "foo.c", directory: "b/")
49!2 = !{}
50!3 = !{i32 2, !"Dwarf Version", i32 4}
51!4 = !{i32 2, !"Debug Info Version", i32 3}
52!5 = !{}
53!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
54!7 = !DISubroutineType(types: !8)
55!8 = !{!9, !9}
56!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
57!10 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 1, type: !9)
58!11 = !DIExpression()
59!12 = !DILocation(line: 1, column: 13, scope: !6)
60!13 = !DILocalVariable(name: "ret", scope: !6, file: !1, line: 2, type: !9)
61!14 = !DILocation(line: 2, column: 7, scope: !6)
62!15 = !DILocation(line: 3, column: 7, scope: !16)
63!16 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 7)
64!17 = !DILocation(line: 3, column: 7, scope: !6)
65!18 = !DILocation(line: 4, column: 9, scope: !16)
66!19 = !DILocation(line: 4, column: 5, scope: !16)
67!20 = !DILocation(line: 5, column: 10, scope: !6)
68!21 = !DILocation(line: 5, column: 3, scope: !6)
69