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https://github.com/RPCS3/llvm-mirror.git
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1f9320a4cd
Summary: This patch is part of 3 patches that together form a single patch, but must be introduced in stages in order not to break things. The way that LLVM interprets DW_OP_plus in DIExpression nodes is basically that of the DW_OP_plus_uconst operator since LLVM expects an unsigned constant operand. This unnecessarily restricts the DW_OP_plus operator, preventing it from being used to describe the evaluation of runtime values on the expression stack. These patches try to align the semantics of DW_OP_plus and DW_OP_minus with that of the DWARF definition, which pops two elements off the expression stack, performs the operation and pushes the result back on the stack. This is done in three stages: • The first patch (LLVM) adds support for DW_OP_plus_uconst. • The second patch (Clang) contains changes all its uses from DW_OP_plus to DW_OP_plus_uconst. • The third patch (LLVM) changes the semantics of DW_OP_plus and DW_OP_minus to be in line with its DWARF meaning. This patch includes the bitcode upgrade from legacy DIExpressions. Patch by Sander de Smalen. Reviewers: echristo, pcc, aprantl Reviewed By: aprantl Subscribers: fhahn, javed.absar, aprantl, llvm-commits Differential Revision: https://reviews.llvm.org/D33894 llvm-svn: 305386
97 lines
5.9 KiB
LLVM
97 lines
5.9 KiB
LLVM
; RUN: llc -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s
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; Note that it would be even better to avoid emitting the empty piece.
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; CHECK: Location description: 93 08
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; piece 0x00000008
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source_filename = "bugpoint-reduced-simplified.ll"
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target triple = "i386-apple-ios7.0.0"
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%class.K = type { %class.N, %struct.F, i32 }
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%class.N = type { %struct.B }
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%struct.B = type { i8 }
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%struct.F = type { i8 }
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%struct.ConditionPlatformHelper = type { i8 }
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%"struct.J<K::L, false, int>::Node" = type { %"class.K::L" }
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%"class.K::L" = type { %class.__thread_id }
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%class.__thread_id = type { i32 }
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%"struct.K::M" = type { %class.I, %class.H }
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%class.I = type { i32 }
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%class.H = type { i32 }
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; Function Attrs: nounwind
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define void @_Z34swift_getGenericMetadata_argumentsv() #0 !dbg !5 {
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entry:
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%ref.tmp = alloca %class.K, align 8
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%0 = getelementptr inbounds %class.K, %class.K* %ref.tmp, i32 0, i32 0, i32 0, i32 0
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%call = tail call i64 @_Z8getCacheP23ConditionPlatformHelper(%struct.ConditionPlatformHelper* undef)
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%1 = bitcast %class.K* %ref.tmp to i64*
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%LastSearch.i.i = getelementptr inbounds %class.K, %class.K* %ref.tmp, i32 0, i32 0, i32 0
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%call.i.i = call %"struct.J<K::L, false, int>::Node"* @_ZN1BIPN1JIN1K1LELb0EiE4NodeEE4loadEv(%struct.B* nonnull %LastSearch.i.i)
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%tobool.i.i = icmp eq %"struct.J<K::L, false, int>::Node"* %call.i.i, null
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br i1 %tobool.i.i, label %_ZN1NIN1K1LELi0EE11getOrInsertIiEE1AIPS1_ET_.exit.i, label %if.then.i.i
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if.then.i.i:
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%2 = lshr i64 %call, 32
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%3 = trunc i64 %2 to i32
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%Payload.i.i = getelementptr inbounds %"struct.J<K::L, false, int>::Node", %"struct.J<K::L, false, int>::Node"* %call.i.i, i32 0, i32 0
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br label %_ZN1NIN1K1LELi0EE11getOrInsertIiEE1AIPS1_ET_.exit.i
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_ZN1NIN1K1LELi0EE11getOrInsertIiEE1AIPS1_ET_.exit.i: ; preds = %if.then.i.i, %entry
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%retval.sroa.0.0.i.i = phi %"class.K::L"* [ %Payload.i.i, %if.then.i.i ], [ undef, %entry ]
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%call4.i = call %"struct.K::M"* @_ZN1FIN1K1MEE3getEv(%struct.F* undef)
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call void @llvm.dbg.value(metadata %"struct.K::M"* %call4.i, i64 0, metadata !7, metadata !11), !dbg !12
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call void @llvm.dbg.value(metadata %"struct.K::M"* %call4.i, i64 0, metadata !7, metadata !18), !dbg !12
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%Handle2.i.i.i.i.i = getelementptr inbounds %"struct.K::M", %"struct.K::M"* %call4.i, i32 0, i32 0, i32 0
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%Handle.i.i.i.i.i = getelementptr inbounds %"struct.K::M", %"struct.K::M"* %call4.i, i32 0, i32 1, i32 0
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%4 = getelementptr inbounds %"class.K::L", %"class.K::L"* %retval.sroa.0.0.i.i, i32 0, i32 0, i32 0
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br label %while.body.i.i.i.i
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while.body.i.i.i.i:
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%5 = load i32, i32* %4, align 4
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%call.i.i.i.i.i.i = call i32 @_Z6get_idv(), !dbg !12
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%call.i.i.i.i.i.i.i = call zeroext i1 @_Z24__libcpp_thread_id_equalii(i32 %5, i32 %call.i.i.i.i.i.i)
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%6 = load i32, i32* %Handle2.i.i.i.i.i, align 4
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call void @_ZN23ConditionPlatformHelper4waitERii(i32* nonnull dereferenceable(4) %Handle.i.i.i.i.i, i32 %6)
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br label %while.body.i.i.i.i
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}
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declare i64 @_Z8getCacheP23ConditionPlatformHelper(%struct.ConditionPlatformHelper*) local_unnamed_addr
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declare %"struct.K::M"* @_ZN1FIN1K1MEE3getEv(%struct.F*) local_unnamed_addr
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declare %"struct.J<K::L, false, int>::Node"* @_ZN1BIPN1JIN1K1LELb0EiE4NodeEE4loadEv(%struct.B*) local_unnamed_addr
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declare i32 @_Z6get_idv() local_unnamed_addr
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declare zeroext i1 @_Z24__libcpp_thread_id_equalii(i32, i32) local_unnamed_addr
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declare void @_ZN23ConditionPlatformHelper4waitERii(i32* dereferenceable(4), i32) local_unnamed_addr
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind "no-frame-pointer-elim-non-leaf" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "test.ii", directory: "/")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 2}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "swift_getGenericMetadata_arguments", linkageName: "_Z34swift_getGenericMetadata_argumentsv", scope: !0, file: !1, line: 95, type: !6, isLocal: false, isDefinition: true, scopeLine: 95, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
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!6 = !DISubroutineType(types: !2)
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!7 = !DILocalVariable(name: "criticalSection", arg: 2, scope: !8, file: !1, line: 23, type: !10)
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!8 = distinct !DISubprogram(name: "<(lambda at test.ii:28:14)>", scope: !0, file: !1, line: 23, type: !6, isLocal: false, isDefinition: true, scopeLine: 23, flags: DIFlagPrototyped, isOptimized: true, unit: !0, templateParams: !2, declaration: !9, variables: !2)
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!9 = !DISubprogram(name: "<(lambda at test.ii:28:14)>", scope: !0, file: !1, line: 23, type: !6, isLocal: false, isDefinition: false, scopeLine: 23, flags: DIFlagPublic | DIFlagPrototyped, isOptimized: true, templateParams: !2)
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!10 = distinct !DICompositeType(tag: DW_TAG_class_type, scope: !0, file: !1, line: 28, size: 96, elements: !2)
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!11 = !DIExpression(DW_OP_stack_value, DW_OP_LLVM_fragment, 0, 32)
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!12 = !DILocation(line: 23, column: 33, scope: !8, inlinedAt: !13)
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!13 = distinct !DILocation(line: 28, column: 5, scope: !14, inlinedAt: !16)
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!14 = distinct !DISubprogram(name: "<(lambda at test.ii:87:58)>", scope: !0, file: !1, line: 27, type: !6, isLocal: false, isDefinition: true, scopeLine: 27, flags: DIFlagPrototyped, isOptimized: true, unit: !0, templateParams: !2, declaration: !15, variables: !2)
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!15 = !DISubprogram(name: "<(lambda at test.ii:87:58)>", scope: !0, file: !1, line: 27, type: !6, isLocal: false, isDefinition: false, scopeLine: 27, flags: DIFlagPublic | DIFlagPrototyped, isOptimized: true, templateParams: !2)
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!16 = distinct !DILocation(line: 99, column: 21, scope: !17)
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!17 = !DILexicalBlockFile(scope: !5, file: !1, discriminator: 2)
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!18 = !DIExpression(DW_OP_plus_uconst, 4, DW_OP_stack_value, DW_OP_LLVM_fragment, 64, 32)
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