[llvm] r283399 - Revert "Verifier: Reject any unknown named MD nodes in the llvm.dbg namespace."

Adrian Prantl via llvm-commits llvm-commits at lists.llvm.org
Wed Oct 5 15:15:34 PDT 2016


Author: adrian
Date: Wed Oct  5 17:15:34 2016
New Revision: 283399

URL: http://llvm.org/viewvc/llvm-project?rev=283399&view=rev
Log:
Revert "Verifier: Reject any unknown named MD nodes in the llvm.dbg namespace."

Forgot to add a testcase in r283390.

Added:
    llvm/trunk/test/DebugInfo/Generic/2010-07-19-Crash.ll
Modified:
    llvm/trunk/lib/IR/Verifier.cpp
    llvm/trunk/test/CodeGen/X86/2010-06-01-DeadArg-DbgInfo.ll

Modified: llvm/trunk/lib/IR/Verifier.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Verifier.cpp?rev=283399&r1=283398&r2=283399&view=diff
==============================================================================
--- llvm/trunk/lib/IR/Verifier.cpp (original)
+++ llvm/trunk/lib/IR/Verifier.cpp Wed Oct  5 17:15:34 2016
@@ -698,15 +698,10 @@ void Verifier::visitGlobalAlias(const Gl
 }
 
 void Verifier::visitNamedMDNode(const NamedMDNode &NMD) {
-  // There used to be various other llvm.dbg.* nodes, but we don't support
-  // upgrading them and we want to reserve the namespace for future uses.
-  if (NMD.getName().startswith("llvm.dbg."))
-    AssertDI(NMD.getName() == "llvm.dbg.cu",
-             "unrecognized named metadata node in the llvm.dbg namespace",
-             &NMD);
   for (const MDNode *MD : NMD.operands()) {
-    if (NMD.getName() == "llvm.dbg.cu")
+    if (NMD.getName() == "llvm.dbg.cu") {
       AssertDI(MD && isa<DICompileUnit>(MD), "invalid compile unit", &NMD, MD);
+    }
 
     if (!MD)
       continue;

Modified: llvm/trunk/test/CodeGen/X86/2010-06-01-DeadArg-DbgInfo.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/2010-06-01-DeadArg-DbgInfo.ll?rev=283399&r1=283398&r2=283399&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/2010-06-01-DeadArg-DbgInfo.ll (original)
+++ llvm/trunk/test/CodeGen/X86/2010-06-01-DeadArg-DbgInfo.ll Wed Oct  5 17:15:34 2016
@@ -3,49 +3,57 @@
 ; Test to check that unused argument 'this' is not undefined in debug info.
 
 target triple = "x86_64-apple-darwin10.2"
-
 %struct.foo = type { i32 }
 
- at llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (%struct.foo*, i32)* @_ZN3foo3bazEi to i8*)], section "llvm.metadata"
+ at llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (%struct.foo*, i32)* @_ZN3foo3bazEi to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
 
-; Function Attrs: noinline nounwind optsize readnone ssp
-define i32 @_ZN3foo3bazEi(%struct.foo* nocapture %this, i32 %x) #0 align 2 !dbg !4 {
-entry: 
-  ; CHECK: DEBUG_VALUE: baz:this <- %RDI{{$}}
-  tail call void @llvm.dbg.value(metadata %struct.foo* %this, i64 0, metadata !13, metadata !16), !dbg !17
-  tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !18, metadata !16), !dbg !17
-  %0 = mul nsw i32 %x, 7, !dbg !19
-  %1 = add nsw i32 %0, 1, !dbg !19
-  ret i32 %1, !dbg !19
+define i32 @_ZN3foo3bazEi(%struct.foo* nocapture %this, i32 %x) nounwind readnone optsize noinline ssp align 2 !dbg !8 {
+;CHECK: DEBUG_VALUE: baz:this <- %RDI{{$}}
+entry:
+  tail call void @llvm.dbg.value(metadata %struct.foo* %this, i64 0, metadata !15, metadata !DIExpression()), !dbg !DILocation(scope: !8)
+  tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !16, metadata !DIExpression()), !dbg !DILocation(scope: !8)
+  %0 = mul nsw i32 %x, 7, !dbg !29                ; <i32> [#uses=1]
+  %1 = add nsw i32 %0, 1, !dbg !29                ; <i32> [#uses=1]
+  ret i32 %1, !dbg !29
 }
 
-; Function Attrs: nounwind readnone
-declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
-
-attributes #0 = { noinline nounwind optsize readnone ssp }
-attributes #1 = { nounwind readnone }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3}
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
 
-!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "4.2.1 LLVM build", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2)
-!1 = !DIFile(filename: "foo.cp", directory: "/tmp/")
-!2 = !{}
-!3 = !{i32 1, !"Debug Info Version", i32 3}
-!4 = distinct !DISubprogram(name: "baz", linkageName: "_ZN3foo3bazEi", scope: !5, file: !1, line: 15, type: !10, isLocal: false, isDefinition: true, scopeLine: 15, virtualIndex: 6, isOptimized: true, unit: !0)
-!5 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", scope: !1, file: !1, line: 3, size: 32, align: 32, elements: !6)
-!6 = !{!7, !9, !4}
-!7 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !5, file: !1, line: 8, baseType: !8, size: 32, align: 32)
-!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!9 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3foo3barEi", scope: !5, file: !1, line: 11, type: !10, isLocal: false, isDefinition: true, scopeLine: 11, virtualIndex: 6, isOptimized: true, unit: !0)
-!10 = !DISubroutineType(types: !11)
-!11 = !{!8, !12, !8}
-!12 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !1, file: !1, baseType: !5, size: 64, align: 64, flags: DIFlagArtificial)
-!13 = !DILocalVariable(name: "this", arg: 1, scope: !4, file: !1, line: 15, type: !14)
-!14 = !DIDerivedType(tag: DW_TAG_const_type, scope: !1, file: !1, baseType: !15, size: 64, align: 64, flags: DIFlagArtificial)
-!15 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !1, file: !1, baseType: !5, size: 64, align: 64)
-!16 = !DIExpression()
-!17 = !DILocation(line: 0, scope: !4)
-!18 = !DILocalVariable(name: "x", arg: 2, scope: !4, file: !1, line: 15, type: !8)
-!19 = !DILocation(line: 16, scope: !20)
-!20 = distinct !DILexicalBlock(scope: !4, file: !1, line: 15)
+!llvm.dbg.cu = !{!4}
+!llvm.module.flags = !{!34}
+!llvm.dbg.lv = !{!0, !14, !15, !16, !17, !24, !25, !28}
+
+!0 = !DILocalVariable(name: "this", line: 11, arg: 1, scope: !1, file: !3, type: !12)
+!1 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3foo3barEi", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !4, scopeLine: 11, file: !31, scope: !2, type: !9)
+!2 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 3, size: 32, align: 32, file: !31, scope: !3, elements: !5)
+!3 = !DIFile(filename: "foo.cp", directory: "/tmp/")
+!4 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "4.2.1 LLVM build", isOptimized: true, emissionKind: FullDebug, file: !31, enums: !32, retainedTypes: !32)
+!5 = !{!6, !1, !8}
+!6 = !DIDerivedType(tag: DW_TAG_member, name: "y", line: 8, size: 32, align: 32, file: !31, scope: !2, baseType: !7)
+!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = distinct !DISubprogram(name: "baz", linkageName: "_ZN3foo3bazEi", line: 15, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !4, scopeLine: 15, file: !31, scope: !2, type: !9)
+!9 = !DISubroutineType(types: !10)
+!10 = !{!7, !11, !7}
+!11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !31, scope: !3, baseType: !2)
+!12 = !DIDerivedType(tag: DW_TAG_const_type, size: 64, align: 64, flags: DIFlagArtificial, file: !31, scope: !3, baseType: !13)
+!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !31, scope: !3, baseType: !2)
+!14 = !DILocalVariable(name: "x", line: 11, arg: 2, scope: !1, file: !3, type: !7)
+!15 = !DILocalVariable(name: "this", line: 15, arg: 1, scope: !8, file: !3, type: !12)
+!16 = !DILocalVariable(name: "x", line: 15, arg: 2, scope: !8, file: !3, type: !7)
+!17 = !DILocalVariable(name: "argc", line: 19, arg: 1, scope: !18, file: !3, type: !7)
+!18 = distinct !DISubprogram(name: "main", linkageName: "main", line: 19, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !4, scopeLine: 19, file: !31, scope: !3, type: !19)
+!19 = !DISubroutineType(types: !20)
+!20 = !{!7, !7, !21}
+!21 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !31, scope: !3, baseType: !22)
+!22 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !31, scope: !3, baseType: !23)
+!23 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!24 = !DILocalVariable(name: "argv", line: 19, arg: 2, scope: !18, file: !3, type: !21)
+!25 = !DILocalVariable(name: "a", line: 20, scope: !26, file: !3, type: !2)
+!26 = distinct !DILexicalBlock(line: 19, column: 0, file: !31, scope: !27)
+!27 = distinct !DILexicalBlock(line: 19, column: 0, file: !31, scope: !18)
+!28 = !DILocalVariable(name: "b", line: 21, scope: !26, file: !3, type: !7)
+!29 = !DILocation(line: 16, scope: !30)
+!30 = distinct !DILexicalBlock(line: 15, column: 0, file: !31, scope: !8)
+!31 = !DIFile(filename: "foo.cp", directory: "/tmp/")
+!32 = !{}
+!34 = !{i32 1, !"Debug Info Version", i32 3}

Added: llvm/trunk/test/DebugInfo/Generic/2010-07-19-Crash.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/Generic/2010-07-19-Crash.ll?rev=283399&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/Generic/2010-07-19-Crash.ll (added)
+++ llvm/trunk/test/DebugInfo/Generic/2010-07-19-Crash.ll Wed Oct  5 17:15:34 2016
@@ -0,0 +1,28 @@
+; RUN: llc -o /dev/null < %s
+; PR7662
+; Do not add variables to !11 because it is a declaration entry.
+
+define i32 @bar() nounwind readnone ssp !dbg !0 {
+entry:
+  ret i32 42, !dbg !9
+}
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!15}
+!llvm.dbg.lv.foo = !{!7}
+
+!0 = distinct !DISubprogram(name: "bar", linkageName: "bar", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, file: !12, scope: !1, type: !3)
+!1 = !DIFile(filename: "one.c", directory: "/private/tmp")
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang 2.8", isOptimized: true, emissionKind: FullDebug, file: !12, enums: !14, retainedTypes: !14)
+!3 = !DISubroutineType(types: !4)
+!4 = !{!5}
+!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!6 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 7, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, file: !12, scope: !1, type: !3, declaration: !11)
+!7 = !DILocalVariable(name: "one", line: 8, scope: !8, file: !1, type: !5)
+!8 = distinct !DILexicalBlock(line: 7, column: 18, file: !12, scope: !6)
+!9 = !DILocation(line: 4, column: 3, scope: !10)
+!10 = distinct !DILexicalBlock(line: 3, column: 11, file: !12, scope: !0)
+!11 = !DISubprogram(name: "foo", linkageName: "foo", line: 7, isLocal: true, isDefinition: false, virtualIndex: 6, isOptimized: true, file: !12, scope: !1, type: !3)
+!12 = !DIFile(filename: "one.c", directory: "/private/tmp")
+!14 = !{}
+!15 = !{i32 1, !"Debug Info Version", i32 3}




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