From be556c838de06c3c2f69bf594996cace6ffa17eb Mon Sep 17 00:00:00 2001 From: Daniel Paoliello Date: Tue, 16 May 2023 11:22:53 -0700 Subject: [PATCH] Add testcase for CodeView "IsNoReturn" flag. Reviewed in D148761; missed committing this before. --- llvm/test/DebugInfo/COFF/noreturn.ll | 144 +++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 llvm/test/DebugInfo/COFF/noreturn.ll diff --git a/llvm/test/DebugInfo/COFF/noreturn.ll b/llvm/test/DebugInfo/COFF/noreturn.ll new file mode 100644 index 0000000..7647bab --- /dev/null +++ b/llvm/test/DebugInfo/COFF/noreturn.ll @@ -0,0 +1,144 @@ +; RUN: llc < %s -filetype=obj | llvm-readobj --codeview - | FileCheck %s + +; Generated by clang++ -S -c -std=c++11 -emit-llvm -g from the following C++11 source: +;class foo { +;public: +;[[noreturn]] void foo_member(){throw 1;} +;}; +; +;[[ noreturn ]] void f() { +; throw 1; +;} +; +;void func(){ +; foo object{}; +; object.foo_member(); +;} + +; CHECK-LABEL: FunctionType: f (0x1002) +; CHECK-NEXT: CodeOffset: ?f@@YAXXZ+0x0 +; CHECK-NEXT: Segment: 0x0 +; CHECK-NEXT: Flags [ (0xC8) +; CHECK-NEXT: HasOptimizedDebugInfo (0x80) +; CHECK-NEXT: IsNoInline (0x40) +; CHECK-NEXT: IsNoReturn (0x8) +; CHECK-NEXT: ] +; CHECK-NEXT: DisplayName: f +; CHECK-NEXT: LinkageName: ?f@@YAXXZ +; CHECK-LABEL: FunctionType: foo_member (0x100B) +; CHECK-NEXT: CodeOffset: ?foo_member@foo@@QEAAXXZ+0x0 +; CHECK-NEXT: Segment: 0x0 +; CHECK-NEXT: Flags [ (0xC8) +; CHECK-NEXT: HasOptimizedDebugInfo (0x80) +; CHECK-NEXT: IsNoInline (0x40) +; CHECK-NEXT: IsNoReturn (0x8) +; CHECK-NEXT: ] +; CHECK-NEXT: DisplayName: foo::foo_member +; CHECK-NEXT: LinkageName: ?foo_member@foo@@QEAAXXZ + + +; ModuleID = 'noreturn.cpp' +source_filename = "noreturn.cpp" +target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-pc-windows-msvc19.35.32216" + +%rtti.TypeDescriptor2 = type { ptr, ptr, [3 x i8] } +%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 } +%eh.CatchableTypeArray.1 = type { i32, [1 x i32] } +%eh.ThrowInfo = type { i32, i32, i32, i32 } +%class.foo = type { i8 } + +$"?foo_member@foo@@QEAAXXZ" = comdat any + +$"??_R0H@8" = comdat any + +$"_CT??_R0H@84" = comdat any + +$_CTA1H = comdat any + +$_TI1H = comdat any + +@"??_7type_info@@6B@" = external constant ptr +@"??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat +@__ImageBase = external dso_local constant i8 +@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0H@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat +@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"_CT??_R0H@84" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32)] }, section ".xdata", comdat +@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @_CTA1H to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, section ".xdata", comdat +@"__const.?func@@YAXXZ.object" = private unnamed_addr constant %class.foo undef, align 1 + +; Function Attrs: mustprogress noinline noreturn optnone uwtable +define dso_local void @"?f@@YAXXZ"() #0 !dbg !8 { + %1 = alloca i32, align 4 + store i32 1, ptr %1, align 4, !dbg !13 + call void @_CxxThrowException(ptr %1, ptr @_TI1H) #4, !dbg !13 + unreachable, !dbg !13 +} + +declare dso_local void @_CxxThrowException(ptr, ptr) + +; Function Attrs: mustprogress noinline optnone uwtable +define dso_local void @"?func@@YAXXZ"() #1 !dbg !14 { + %1 = alloca %class.foo, align 1 + call void @llvm.dbg.declare(metadata ptr %1, metadata !15, metadata !DIExpression()), !dbg !22 + call void @llvm.memcpy.p0.p0.i64(ptr align 1 %1, ptr align 1 @"__const.?func@@YAXXZ.object", i64 1, i1 false), !dbg !22 + call void @"?foo_member@foo@@QEAAXXZ"(ptr noundef nonnull align 1 dereferenceable(1) %1) #4, !dbg !23 + unreachable, !dbg !23 +} + +; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn +declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 + +; Function Attrs: argmemonly nocallback nofree nounwind willreturn +declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3 + +; Function Attrs: mustprogress noinline noreturn optnone uwtable +define linkonce_odr dso_local void @"?foo_member@foo@@QEAAXXZ"(ptr noundef nonnull align 1 dereferenceable(1) %0) #0 comdat align 2 !dbg !24 { + %2 = alloca ptr, align 8 + %3 = alloca i32, align 4 + store ptr %0, ptr %2, align 8 + call void @llvm.dbg.declare(metadata ptr %2, metadata !25, metadata !DIExpression()), !dbg !27 + %4 = load ptr, ptr %2, align 8 + store i32 1, ptr %3, align 4, !dbg !28 + call void @_CxxThrowException(ptr %3, ptr @_TI1H) #4, !dbg !28 + unreachable, !dbg !28 +} + +attributes #0 = { mustprogress noinline noreturn optnone uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } +attributes #1 = { mustprogress noinline optnone uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" } +attributes #2 = { nocallback nofree nosync nounwind readnone speculatable willreturn } +attributes #3 = { argmemonly nocallback nofree nounwind willreturn } +attributes #4 = { noreturn } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!2, !3, !4, !5, !6} +!llvm.ident = !{!7} + +!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_11, file: !1, producer: "clang version 15.0.1", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) +!1 = !DIFile(filename: "noreturn.cpp", directory: "C:\\llvm", checksumkind: CSK_MD5, checksum: "4431274b41f9156c1861249cc2d5fbc6") +!2 = !{i32 2, !"CodeView", i32 1} +!3 = !{i32 2, !"Debug Info Version", i32 3} +!4 = !{i32 1, !"wchar_size", i32 2} +!5 = !{i32 7, !"PIC Level", i32 2} +!6 = !{i32 7, !"uwtable", i32 2} +!7 = !{!"clang version 15.0.1"} +!8 = distinct !DISubprogram(name: "f", linkageName: "?f@@YAXXZ", scope: !9, file: !9, line: 6, type: !10, scopeLine: 6, flags: DIFlagPrototyped | DIFlagNoReturn, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !12) +!9 = !DIFile(filename: "noreturn.cpp", directory: "", checksumkind: CSK_MD5, checksum: "4431274b41f9156c1861249cc2d5fbc6") +!10 = !DISubroutineType(types: !11) +!11 = !{null} +!12 = !{} +!13 = !DILocation(line: 7, scope: !8) +!14 = distinct !DISubprogram(name: "func", linkageName: "?func@@YAXXZ", scope: !9, file: !9, line: 10, type: !10, scopeLine: 10, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !12) +!15 = !DILocalVariable(name: "object", scope: !14, file: !9, line: 11, type: !16) +!16 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "foo", file: !9, line: 1, size: 8, flags: DIFlagTypePassByValue, elements: !17, identifier: ".?AVfoo@@") +!17 = !{!18} +!18 = !DISubprogram(name: "foo_member", linkageName: "?foo_member@foo@@QEAAXXZ", scope: !16, file: !9, line: 3, type: !19, scopeLine: 3, flags: DIFlagPublic | DIFlagPrototyped | DIFlagNoReturn, spFlags: 0) +!19 = !DISubroutineType(types: !20) +!20 = !{null, !21} +!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) +!22 = !DILocation(line: 11, scope: !14) +!23 = !DILocation(line: 12, scope: !14) +!24 = distinct !DISubprogram(name: "foo_member", linkageName: "?foo_member@foo@@QEAAXXZ", scope: !16, file: !9, line: 3, type: !19, scopeLine: 3, flags: DIFlagPrototyped | DIFlagNoReturn, spFlags: DISPFlagDefinition, unit: !0, declaration: !18, retainedNodes: !12) +!25 = !DILocalVariable(name: "this", arg: 1, scope: !24, type: !26, flags: DIFlagArtificial | DIFlagObjectPointer) +!26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64) +!27 = !DILocation(line: 0, scope: !24) +!28 = !DILocation(line: 3, scope: !24) -- 2.7.4