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llvm-mirror/test/DebugInfo/Generic/debuginfofinder-forward-declaration.ll

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Fix crash in DebugInfoFinder when adding a module with forward declared composite type The testcase that is included in the patch caused a crash when doing DebugInfoFinder::processModule on the module due to DCT->getElements() returning nullptr in DebugInfoFinder::processType. By doing "DCT->getElements()" instead of "DCT->getElements()->operands()" one gets a DIArray instead of a raw MDTuple. The former has code to handle null as a 0-element array and therefore avoids the crash. Differential Revision: http://reviews.llvm.org/D9008 llvm-svn: 234875
2015-04-14 11:18:17 +02:00
; RUN: opt -analyze -module-debuginfo < %s | FileCheck %s
; This module is generated from the following c-code:
;
; > union X;
; >
; > struct Y {
; > union X *x;
; > };
; >
; > struct Y y;
; CHECK: Type: Y from /tmp/minimal.c:3 DW_TAG_structure_type
; CHECK: Type: x from /tmp/minimal.c:4 DW_TAG_member
; CHECK: Type: DW_TAG_pointer_type
; CHECK: Type: X from /tmp/minimal.c:1 DW_TAG_structure_type
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 01:45:21 +01:00
source_filename = "test/DebugInfo/Generic/debuginfofinder-forward-declaration.ll"
Fix crash in DebugInfoFinder when adding a module with forward declared composite type The testcase that is included in the patch caused a crash when doing DebugInfoFinder::processModule on the module due to DCT->getElements() returning nullptr in DebugInfoFinder::processType. By doing "DCT->getElements()" instead of "DCT->getElements()->operands()" one gets a DIArray instead of a raw MDTuple. The former has code to handle null as a 0-element array and therefore avoids the crash. Differential Revision: http://reviews.llvm.org/D9008 llvm-svn: 234875
2015-04-14 11:18:17 +02:00
%struct.Y = type { %struct.X* }
%struct.X = type opaque
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 01:45:21 +01:00
@y = common global %struct.Y zeroinitializer, align 8, !dbg !0
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!11, !12}
!llvm.ident = !{!13}
Canonicalize the representation of empty an expression in DIGlobalVariableExpression This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
2017-08-30 20:06:51 +02:00
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
Renumber testcase metadata nodes after r290153. This patch renumbers the metadata nodes in debug info testcases after https://reviews.llvm.org/D26769. This is a separate patch because it causes so much churn. This was implemented with a python script that pipes the testcases through llvm-as - | llvm-dis - and then goes through the original and new output side-by side to insert all comments at a close-enough location. Differential Revision: https://reviews.llvm.org/D27765 llvm-svn: 290292
2016-12-22 01:45:21 +01:00
!1 = !DIGlobalVariable(name: "y", scope: !2, file: !3, line: 7, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.7.0 (http://llvm.org/git/clang.git 247b30a043eb8f39ea3708e7e995089da0a6b00f) (http://llvm.org/git/llvm.git 6ecc7365a89c771fd229bdd9ffcc178684ea1aa5)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5, imports: !4)
!3 = !DIFile(filename: "minimal.c", directory: "/tmp")
!4 = !{}
!5 = !{!0}
!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "Y", file: !3, line: 3, size: 64, align: 64, elements: !7)
!7 = !{!8}
!8 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !6, file: !3, line: 4, baseType: !9, size: 64, align: 64)
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", file: !3, line: 1, flags: DIFlagFwdDecl)
!11 = !{i32 2, !"Dwarf Version", i32 4}
!12 = !{i32 2, !"Debug Info Version", i32 3}
!13 = !{!"clang version 3.7.0 (http://llvm.org/git/clang.git 247b30a043eb8f39ea3708e7e995089da0a6b00f) (http://llvm.org/git/llvm.git 6ecc7365a89c771fd229bdd9ffcc178684ea1aa5)"}
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