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cf7e846d11
This patch implements PR31013 by introducing a
DIGlobalVariableExpression that holds a pair of DIGlobalVariable and
DIExpression.
Currently, DIGlobalVariables holds a DIExpression. This is not the
best way to model this:
(1) The DIGlobalVariable should describe the source level variable,
not how to get to its location.
(2) It makes it unsafe/hard to update the expressions when we call
replaceExpression on the DIGLobalVariable.
(3) It makes it impossible to represent a global variable that is in
more than one location (e.g., a variable with multiple
DW_OP_LLVM_fragment-s). We also moved away from attaching the
DIExpression to DILocalVariable for the same reasons.
This reapplies r289902 with additional testcase upgrades and a change
to the Bitcode record for DIGlobalVariable, that makes upgrading the
old format unambiguous also for variables without DIExpressions.
<rdar://problem/29250149>
https://llvm.org/bugs/show_bug.cgi?id=31013
Differential Revision: https://reviews.llvm.org/D26769
llvm-svn: 290153
47 lines
2.9 KiB
LLVM
47 lines
2.9 KiB
LLVM
; RUN: opt -module-summary -o %t-dst.bc %s
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; RUN: opt -module-summary -o %t-src.bc %p/Inputs/crash_debuginfo.ll
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; RUN: llvm-lto -thinlto -o %t-index %t-dst.bc %t-src.bc
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; RUN: opt -function-import -inline -summary-file %t-index.thinlto.bc %t-dst.bc -o %t.out
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; RUN: llvm-nm %t.out | FileCheck %s
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; Verify that we import bar and inline it. It use to crash importing due to ODR type uniquing
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; CHECK-NOT: bar
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; CHECK: foo
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; CHECK-NOT: bar
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; ModuleID = 'test/ThinLTO/X86/crash_debuginfo.ll'
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source_filename = "test/ThinLTO/X86/crash_debuginfo.ll"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.7.0"
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%some_type = type { i32 }
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define void @foo(i32 %arg) {
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call void @bar(i32 %arg), !dbg !7
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unreachable
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}
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declare void @bar(i32)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "Apple LLVM version 8.0.0 (clang-800.0.24.1)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2)
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!1 = !DIFile(filename: "1.cpp", directory: "/another_dir")
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!2 = !{!3}
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!3 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "_", linkageName: "some_global", scope: null, file: !1, line: 20, type: !4, isLocal: true, isDefinition: true))
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!4 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "slice_nil", file: !1, line: 13, size: 64, align: 64, elements: !5, identifier: "_ZTSN5boost6python3api9slice_nilE")
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!5 = !{}
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!6 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = distinct !DILocation(line: 728, column: 71, scope: !8, inlinedAt: !15)
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!8 = distinct !DISubprogram(name: "baz", linkageName: "baz", scope: !9, file: !1, line: 726, type: !10, isLocal: false, isDefinition: true, scopeLine: 727, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !11, variables: !12)
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!9 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "some_other_class", file: !1, line: 197, size: 192, align: 64, elements: !5, templateParams: !5, identifier: "some_other_class")
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!10 = !DISubroutineType(types: !5)
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!11 = !DISubprogram(name: "baz", linkageName: "baz", scope: !9, file: !1, line: 726, type: !10, isLocal: false, isDefinition: false, scopeLine: 726, flags: DIFlagPrototyped, isOptimized: true)
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!12 = !{!13}
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!13 = !DILocalVariable(name: "caster", scope: !8, file: !1, line: 728, type: !14)
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!14 = distinct !DICompositeType(tag: DW_TAG_union_type, scope: !8, file: !1, line: 728, size: 64, align: 64, elements: !5, identifier: "someclass")
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!15 = distinct !DILocation(line: 87, column: 9, scope: !16)
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!16 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !9, line: 73, type: !10, isLocal: false, isDefinition: true, scopeLine: 74, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !17, variables: !5)
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!17 = !DISubprogram(name: "foo", linkageName: "foo", scope: !9, file: !1, line: 83, type: !10, isLocal: false, isDefinition: false, scopeLine: 83, flags: DIFlagPrototyped, isOptimized: true)
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