| ; RUN: llc -O0 < %s | FileCheck %s |
| |
| source_filename = "t.c" |
| target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" |
| target triple = "i386-pc-windows-msvc19.0.24215" |
| |
| @str_const = internal unnamed_addr constant [4 x i8] c"str\00", align 1 |
| |
| declare i32 @puts(i8*) |
| declare void @use_i32(i32*) |
| declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone |
| |
| ; We had a line info quality issue where the LEA for the string constant had no |
| ; location info, so the .cv_loc directive appeared after it. Now we have logic |
| ; that tries to emit the first valid location to the top of each MBB. |
| |
| define void @lea_str_loc(i1 %cond) !dbg !8 { |
| entry: |
| br i1 %cond, label %if.then, label %if.end, !dbg !17 |
| |
| if.then: ; preds = %entry |
| br label %return, !dbg !18 |
| |
| if.end: ; preds = %entry |
| %call = call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str_const, i32 0, i32 0)), !dbg !19 |
| br label %return, !dbg !20 |
| |
| return: ; preds = %if.end, %if.then |
| ret void, !dbg !20 |
| } |
| |
| ; The t.c:5 line marker should appear immediately after the BB label. |
| |
| ; CHECK-LABEL: _lea_str_loc: |
| ; CHECK: .cv_loc {{.*}} # t.c:4:5 |
| ; CHECK: jmp LBB{{.*}} |
| ; CHECK: LBB0_{{.*}}: # %if.end |
| ; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3 |
| ; CHECK-NEXT: leal _str_const, %[[reg:[^ ]*]] |
| ; CHECK-NEXT: movl %[[reg]], (%esp) |
| ; CHECK-NEXT: calll _puts |
| |
| define void @instr_no_loc(i1 %cond) !dbg !21 { |
| entry: |
| br i1 %cond, label %if.then, label %if.end, !dbg !22 |
| |
| if.then: ; preds = %entry |
| br label %return, !dbg !23 |
| |
| if.end: ; preds = %entry |
| call void asm sideeffect "nop", ""() |
| %call = call i32 @puts(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @str_const, i32 0, i32 0)), !dbg !24 |
| br label %return, !dbg !25 |
| |
| return: ; preds = %if.end, %if.then |
| ret void, !dbg !25 |
| } |
| |
| ; CHECK-LABEL: _instr_no_loc: |
| ; CHECK: .cv_loc {{.*}} # t.c:4:5 |
| ; CHECK: jmp LBB{{.*}} |
| ; CHECK: LBB1_{{.*}}: # %if.end |
| ; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3 |
| ; CHECK-NEXT: #APP |
| ; CHECK-NEXT: nop |
| ; CHECK-NEXT: #NO_APP |
| ; CHECK-NEXT: leal _str_const, %[[reg:[^ ]*]] |
| ; CHECK-NEXT: movl %[[reg]], (%esp) |
| ; CHECK-NEXT: calll _puts |
| |
| define void @lea_dbg_value(i1 %cond) !dbg !30 { |
| entry: |
| %value = alloca i32 |
| store i32 42, i32* %value |
| br i1 %cond, label %if.then, label %if.end, !dbg !31 |
| |
| if.then: ; preds = %entry |
| br label %return, !dbg !32 |
| |
| if.end: ; preds = %entry |
| call void @llvm.dbg.value(metadata i32* %value, metadata !35, metadata !13), !dbg !34 |
| call void @use_i32(i32* %value), !dbg !33 |
| br label %return, !dbg !34 |
| |
| return: ; preds = %if.end, %if.then |
| ret void, !dbg !34 |
| } |
| |
| ; CHECK-LABEL: _lea_dbg_value: |
| ; CHECK: .cv_loc {{.*}} # t.c:4:5 |
| ; CHECK: jmp LBB{{.*}} |
| ; CHECK: LBB2_{{.*}}: # %if.end |
| ; CHECK-NEXT: .cv_loc {{.*}} # t.c:5:3 |
| ; CHECK: leal 4(%esp), %[[reg:[^ ]*]] |
| ; CHECK: #DEBUG_VALUE: lea_dbg_value:v <- [DW_OP_deref] $[[reg]] |
| ; CHECK: movl %[[reg]], (%esp) |
| ; CHECK: calll _use_i32 |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "b32df088e991f1996b4e4deb3855c14b") |
| !2 = !{} |
| !3 = !{i32 1, !"NumRegisterParameters", i32 0} |
| !4 = !{i32 2, !"CodeView", i32 1} |
| !5 = !{i32 2, !"Debug Info Version", i32 3} |
| !6 = !{i32 1, !"wchar_size", i32 2} |
| !7 = !{!"clang version 5.0.0 "} |
| !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) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null, !11} |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !13 = !DIExpression(DW_OP_deref) |
| !14 = !DILocation(line: 2, column: 12, scope: !8) |
| !15 = !DILocation(line: 3, column: 7, scope: !16) |
| !16 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 7) |
| !17 = !DILocation(line: 3, column: 7, scope: !8) |
| !18 = !DILocation(line: 4, column: 5, scope: !16) |
| !19 = !DILocation(line: 5, column: 3, scope: !8) |
| !20 = !DILocation(line: 6, column: 1, scope: !8) |
| !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) |
| !22 = !DILocation(line: 3, column: 7, scope: !21) |
| !23 = !DILocation(line: 4, column: 5, scope: !21) |
| !24 = !DILocation(line: 5, column: 3, scope: !21) |
| !25 = !DILocation(line: 6, column: 1, scope: !21) |
| !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) |
| !31 = !DILocation(line: 3, column: 7, scope: !30) |
| !32 = !DILocation(line: 4, column: 5, scope: !30) |
| !33 = !DILocation(line: 5, column: 3, scope: !30) |
| !34 = !DILocation(line: 6, column: 1, scope: !30) |
| !35 = !DILocalVariable(name: "v", scope: !30, file: !1, line: 3, type: !11) |
