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