[llvm] be556c8 - Add testcase for CodeView "IsNoReturn" flag.

Eli Friedman via llvm-commits llvm-commits at lists.llvm.org
Tue May 16 11:25:57 PDT 2023 

Author: Daniel Paoliello
Date: 2023-05-16T11:25:41-07:00
New Revision: be556c838de06c3c2f69bf594996cace6ffa17eb

URL: https://github.com/llvm/llvm-project/commit/be556c838de06c3c2f69bf594996cace6ffa17eb
DIFF: https://github.com/llvm/llvm-project/commit/be556c838de06c3c2f69bf594996cace6ffa17eb.diff

LOG: Add testcase for CodeView "IsNoReturn" flag.

Reviewed in D148761; missed committing this before.

Added: 
    llvm/test/DebugInfo/COFF/noreturn.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/DebugInfo/COFF/noreturn.ll b/llvm/test/DebugInfo/COFF/noreturn.ll
new file mode 100644
index 0000000000000..7647babf3f503
--- /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 at 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 at 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 }
+
+$"?foo_member at foo@@QEAAXXZ" = comdat any
+
+$"??_R0H at 8" = comdat any
+
+$"_CT??_R0H at 84" = comdat any
+
+$_CTA1H = comdat any
+
+$_TI1H = comdat any
+
+@"??_7type_info@@6B@" = external constant ptr
+@"??_R0H at 8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat
+ at __ImageBase = external dso_local constant i8
+@"_CT??_R0H at 84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"??_R0H at 8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
+ at _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 at 84" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
+ at _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 at 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 at 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 at 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 at 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)

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