1 ; RUN: llc -O0 < %s | FileCheck %s
3 source_filename = "t.c"
4 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
5 target triple = "i386-pc-windows-msvc19.0.24215"
7 @str_const = internal unnamed_addr constant [4 x i8] c"str\00", align 1
10 declare void @use_i32(i32*)
11 declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
13 ; We had a line info quality issue where the LEA for the string constant had no
14 ; location info, so the .cv_loc directive appeared after it. Now we have logic
15 ; that tries to emit the first valid location to the top of each MBB.
17 define void @lea_str_loc(i1 %cond) !dbg !8 {
19 br i1 %cond, label %if.then, label %if.end, !dbg !17
21 if.then: ; preds = %entry
22 br label %return, !dbg !18
24 if.end: ; preds = %entry
25 %call = call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str_const, i32 0, i32 0)), !dbg !19
26 br label %return, !dbg !20
28 return: ; preds = %if.end, %if.then
32 ; The t.c:5 line marker should appear immediately after the BB label.
34 ; CHECK-LABEL: _lea_str_loc:
35 ; CHECK: .cv_loc {{.*}} # t.c:4:5
36 ; CHECK: jmp LBB{{.*}}
37 ; CHECK: LBB0_{{.*}}: # %if.end
38 ; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3
39 ; CHECK-NEXT: leal _str_const, %[[reg:[^ ]*]]
40 ; CHECK-NEXT: movl %[[reg]], (%esp)
41 ; CHECK-NEXT: calll _puts
43 define void @instr_no_loc(i1 %cond) !dbg !21 {
45 br i1 %cond, label %if.then, label %if.end, !dbg !22
47 if.then: ; preds = %entry
48 br label %return, !dbg !23
50 if.end: ; preds = %entry
51 call void asm sideeffect "nop", ""()
52 %call = call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str_const, i32 0, i32 0)), !dbg !24
53 br label %return, !dbg !25
55 return: ; preds = %if.end, %if.then
59 ; CHECK-LABEL: _instr_no_loc:
60 ; CHECK: .cv_loc {{.*}} # t.c:4:5
61 ; CHECK: jmp LBB{{.*}}
62 ; CHECK: LBB1_{{.*}}: # %if.end
63 ; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3
67 ; CHECK-NEXT: leal _str_const, %[[reg:[^ ]*]]
68 ; CHECK-NEXT: movl %[[reg]], (%esp)
69 ; CHECK-NEXT: calll _puts
71 define void @lea_dbg_value(i1 %cond) !dbg !30 {
74 store i32 42, i32* %value
75 br i1 %cond, label %if.then, label %if.end, !dbg !31
77 if.then: ; preds = %entry
78 br label %return, !dbg !32
80 if.end: ; preds = %entry
81 call void @llvm.dbg.value(metadata i32* %value, metadata !35, metadata !13), !dbg !34
82 call void @use_i32(i32* %value), !dbg !33
83 br label %return, !dbg !34
85 return: ; preds = %if.end, %if.then
89 ; CHECK-LABEL: _lea_dbg_value:
90 ; CHECK: .cv_loc {{.*}} # t.c:4:5
91 ; CHECK: jmp LBB{{.*}}
92 ; CHECK: LBB2_{{.*}}: # %if.end
93 ; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3
94 ; CHECK: leal 4(%esp), %[[reg:[^ ]*]]
95 ; CHECK: #DEBUG_VALUE: lea_dbg_value:v <- [DW_OP_deref] $[[reg]]
96 ; CHECK: movl %[[reg]], (%esp)
97 ; CHECK: calll _use_i32
100 !llvm.module.flags = !{!3, !4, !5, !6}
103 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
104 !1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "b32df088e991f1996b4e4deb3855c14b")
106 !3 = !{i32 1, !"NumRegisterParameters", i32 0}
107 !4 = !{i32 2, !"CodeView", i32 1}
108 !5 = !{i32 2, !"Debug Info Version", i32 3}
109 !6 = !{i32 1, !"wchar_size", i32 2}
110 !7 = !{!"clang version 5.0.0 "}
111 !8 = distinct !DISubprogram(name: "lea_str_loc", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
112 !9 = !DISubroutineType(types: !10)
114 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
115 !13 = !DIExpression(DW_OP_deref)
116 !14 = !DILocation(line: 2, column: 12, scope: !8)
117 !15 = !DILocation(line: 3, column: 7, scope: !16)
118 !16 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 7)
119 !17 = !DILocation(line: 3, column: 7, scope: !8)
120 !18 = !DILocation(line: 4, column: 5, scope: !16)
121 !19 = !DILocation(line: 5, column: 3, scope: !8)
122 !20 = !DILocation(line: 6, column: 1, scope: !8)
123 !21 = distinct !DISubprogram(name: "instr_no_loc", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
124 !22 = !DILocation(line: 3, column: 7, scope: !21)
125 !23 = !DILocation(line: 4, column: 5, scope: !21)
126 !24 = !DILocation(line: 5, column: 3, scope: !21)
127 !25 = !DILocation(line: 6, column: 1, scope: !21)
128 !30 = distinct !DISubprogram(name: "lea_dbg_value", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
129 !31 = !DILocation(line: 3, column: 7, scope: !30)
130 !32 = !DILocation(line: 4, column: 5, scope: !30)
131 !33 = !DILocation(line: 5, column: 3, scope: !30)
132 !34 = !DILocation(line: 6, column: 1, scope: !30)
133 !35 = !DILocalVariable(name: "v", scope: !30, file: !1, line: 3, type: !11)