diff --git a/llvm/lib/Target/BPF/BPFAbstractMemberAccess.cpp b/llvm/lib/Target/BPF/BPFAbstractMemberAccess.cpp --- a/llvm/lib/Target/BPF/BPFAbstractMemberAccess.cpp +++ b/llvm/lib/Target/BPF/BPFAbstractMemberAccess.cpp @@ -141,7 +141,7 @@ const DataLayout *DL = nullptr; Module *M = nullptr; - std::map GEPGlobals; + static std::map GEPGlobals; // A map to link preserve_*_access_index instrinsic calls. std::map> AIChain; // A map to hold all the base preserve_*_access_index instrinsic calls. @@ -179,6 +179,8 @@ bool transformGEPChain(CallInst *Call, CallInfo &CInfo); }; +std::map BPFAbstractMemberAccess::GEPGlobals; + class BPFAbstractMemberAccessLegacyPass final : public FunctionPass { BPFTargetMachine *TM; diff --git a/llvm/lib/Target/BPF/BPFPreserveDIType.cpp b/llvm/lib/Target/BPF/BPFPreserveDIType.cpp --- a/llvm/lib/Target/BPF/BPFPreserveDIType.cpp +++ b/llvm/lib/Target/BPF/BPFPreserveDIType.cpp @@ -68,7 +68,7 @@ return false; std::string BaseName = "llvm.btf_type_id."; - int Count = 0; + static int Count = 0; for (auto Call : PreserveDITypeCalls) { const ConstantInt *Flag = dyn_cast(Call->getArgOperand(1)); assert(Flag); diff --git a/llvm/test/CodeGen/BPF/CORE/btf-id-duplicate.ll b/llvm/test/CodeGen/BPF/CORE/btf-id-duplicate.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/BPF/CORE/btf-id-duplicate.ll @@ -0,0 +1,97 @@ +; RUN: opt -O2 -mtriple=bpf-pc-linux %s | llvm-dis > %t1 +; RUN: llc -o - %t1 | FileCheck %s +; RUN: opt -passes='default' -mtriple=bpf-pc-linux %s | llvm-dis > %t1 +; RUN: llc -o - %t1 | FileCheck %s +; +; Source: +; struct s1 { int a; int b; }; +; int foo(struct s1 *arg) { return __builtin_btf_type_id(*arg, 0); } +; int bar(struct s1 *arg) { return __builtin_btf_type_id(*arg, 0); } +; Compilation flag: +; clang -target bpf -O2 -S -emit-llvm -g -Xclang -disable-llvm-passes test.c + +%struct.s1 = type { i32, i32 } + +; Function Attrs: nounwind +define dso_local i32 @foo(%struct.s1* %arg) #0 !dbg !7 { +entry: + %arg.addr = alloca %struct.s1*, align 8 + store %struct.s1* %arg, %struct.s1** %arg.addr, align 8, !tbaa !18 + call void @llvm.dbg.declare(metadata %struct.s1** %arg.addr, metadata !17, metadata !DIExpression()), !dbg !22 + %0 = call i32 @llvm.bpf.btf.type.id(i32 0, i64 0), !dbg !23, !llvm.preserve.access.index !12 + ret i32 %0, !dbg !24 +} + +; Function Attrs: nounwind readnone speculatable willreturn +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 + +; Function Attrs: nounwind readnone +declare i32 @llvm.bpf.btf.type.id(i32, i64) #2 + +; Function Attrs: nounwind +define dso_local i32 @bar(%struct.s1* %arg) #0 !dbg !25 { +entry: + %arg.addr = alloca %struct.s1*, align 8 + store %struct.s1* %arg, %struct.s1** %arg.addr, align 8, !tbaa !18 + call void @llvm.dbg.declare(metadata %struct.s1** %arg.addr, metadata !27, metadata !DIExpression()), !dbg !28 + %0 = call i32 @llvm.bpf.btf.type.id(i32 1, i64 0), !dbg !29, !llvm.preserve.access.index !12 + ret i32 %0, !dbg !30 +} + +; CHECK: .long 1 # BTF_KIND_STRUCT(id = 2) + +; CHECK: .ascii "s1" # string offset=1 +; CHECK: .ascii ".text" # string offset=20 +; CHECK: .byte 48 # string offset=26 + +; CHECK: .long 16 # FieldReloc +; CHECK-NEXT: .long 20 # Field reloc section string offset=20 +; CHECK-NEXT: .long 2 +; CHECK-NEXT: .long .Ltmp{{[0-9]+}} +; CHECK-NEXT: .long 2 +; CHECK-NEXT: .long 26 +; CHECK-NEXT: .long 6 +; CHECK-NEXT: .long .Ltmp{{[0-9]+}} +; CHECK-NEXT: .long 2 +; CHECK-NEXT: .long 26 +; CHECK-NEXT: .long 6 + +attributes #0 = { nounwind "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #1 = { nounwind readnone speculatable willreturn } +attributes #2 = { nounwind readnone } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4, !5} +!llvm.ident = !{!6} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (https://github.com/llvm/llvm-project.git 80a3f7beebd8caab358ff063526ae2d26467c029)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) +!1 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/dup") +!2 = !{} +!3 = !{i32 7, !"Dwarf Version", i32 4} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{i32 1, !"wchar_size", i32 4} +!6 = !{!"clang version 12.0.0 (https://github.com/llvm/llvm-project.git 80a3f7beebd8caab358ff063526ae2d26467c029)"} +!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16) +!8 = !DISubroutineType(types: !9) +!9 = !{!10, !11} +!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) +!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 1, size: 64, elements: !13) +!13 = !{!14, !15} +!14 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !12, file: !1, line: 1, baseType: !10, size: 32) +!15 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !12, file: !1, line: 1, baseType: !10, size: 32, offset: 32) +!16 = !{!17} +!17 = !DILocalVariable(name: "arg", arg: 1, scope: !7, file: !1, line: 2, type: !11) +!18 = !{!19, !19, i64 0} +!19 = !{!"any pointer", !20, i64 0} +!20 = !{!"omnipotent char", !21, i64 0} +!21 = !{!"Simple C/C++ TBAA"} +!22 = !DILocation(line: 2, column: 20, scope: !7) +!23 = !DILocation(line: 2, column: 34, scope: !7) +!24 = !DILocation(line: 2, column: 27, scope: !7) +!25 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !26) +!26 = !{!27} +!27 = !DILocalVariable(name: "arg", arg: 1, scope: !25, file: !1, line: 3, type: !11) +!28 = !DILocation(line: 3, column: 20, scope: !25) +!29 = !DILocation(line: 3, column: 34, scope: !25) +!30 = !DILocation(line: 3, column: 27, scope: !25) diff --git a/llvm/test/CodeGen/BPF/CORE/field-reloc-duplicate.ll b/llvm/test/CodeGen/BPF/CORE/field-reloc-duplicate.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/BPF/CORE/field-reloc-duplicate.ll @@ -0,0 +1,106 @@ +; RUN: opt -O2 -mtriple=bpf-pc-linux %s | llvm-dis > %t1 +; RUN: llc -o - %t1 | FileCheck %s +; RUN: opt -passes='default' -mtriple=bpf-pc-linux %s | llvm-dis > %t1 +; RUN: llc -o - %t1 | FileCheck %s +; +; Source: +; struct s1 { int a; int b; } __attribute__((preserve_access_index)); +; int foo(struct s1 *arg) { return arg->a; } +; int bar(struct s1 *arg) { return arg->a; } +; Compilation flag: +; clang -target bpf -O2 -S -emit-llvm -g -Xclang -disable-llvm-passes test.c + +%struct.s1 = type { i32, i32 } + +; Function Attrs: nounwind +define dso_local i32 @foo(%struct.s1* %arg) #0 !dbg !7 { +entry: + %arg.addr = alloca %struct.s1*, align 8 + store %struct.s1* %arg, %struct.s1** %arg.addr, align 8, !tbaa !18 + call void @llvm.dbg.declare(metadata %struct.s1** %arg.addr, metadata !17, metadata !DIExpression()), !dbg !22 + %0 = load %struct.s1*, %struct.s1** %arg.addr, align 8, !dbg !23, !tbaa !18 + %1 = call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* %0, i32 0, i32 0), !dbg !24, !llvm.preserve.access.index !12 + %2 = load i32, i32* %1, align 4, !dbg !24, !tbaa !25 + ret i32 %2, !dbg !28 +} + +; Function Attrs: nounwind readnone speculatable willreturn +declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 + +; Function Attrs: nounwind readnone +declare i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1*, i32 immarg, i32 immarg) #2 + +; Function Attrs: nounwind +define dso_local i32 @bar(%struct.s1* %arg) #0 !dbg !29 { +entry: + %arg.addr = alloca %struct.s1*, align 8 + store %struct.s1* %arg, %struct.s1** %arg.addr, align 8, !tbaa !18 + call void @llvm.dbg.declare(metadata %struct.s1** %arg.addr, metadata !31, metadata !DIExpression()), !dbg !32 + %0 = load %struct.s1*, %struct.s1** %arg.addr, align 8, !dbg !33, !tbaa !18 + %1 = call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.s1s(%struct.s1* %0, i32 0, i32 0), !dbg !34, !llvm.preserve.access.index !12 + %2 = load i32, i32* %1, align 4, !dbg !34, !tbaa !25 + ret i32 %2, !dbg !35 +} + +; CHECK: .long 1 # BTF_KIND_STRUCT(id = 2) + +; CHECK: .ascii "s1" # string offset=1 +; CHECK: .ascii ".text" # string offset=20 +; CHECK: .ascii "0:0" # string offset=26 + +; CHECK: .long 16 # FieldReloc +; CHECK-NEXT: .long 20 # Field reloc section string offset=20 +; CHECK-NEXT: .long 2 +; CHECK-NEXT: .long .Ltmp{{[0-9]+}} +; CHECK-NEXT: .long 2 +; CHECK-NEXT: .long 26 +; CHECK-NEXT: .long 0 +; CHECK-NEXT: .long .Ltmp{{[0-9]+}} +; CHECK-NEXT: .long 2 +; CHECK-NEXT: .long 26 +; CHECK-NEXT: .long 0 + +attributes #0 = { nounwind "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #1 = { nounwind readnone speculatable willreturn } +attributes #2 = { nounwind readnone } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!3, !4, !5} +!llvm.ident = !{!6} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (https://github.com/llvm/llvm-project.git 2f40e20613758b3e11a15494c09f4b6973673d6b)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) +!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/core") +!2 = !{} +!3 = !{i32 7, !"Dwarf Version", i32 4} +!4 = !{i32 2, !"Debug Info Version", i32 3} +!5 = !{i32 1, !"wchar_size", i32 4} +!6 = !{!"clang version 12.0.0 (https://github.com/llvm/llvm-project.git 2f40e20613758b3e11a15494c09f4b6973673d6b)"} +!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16) +!8 = !DISubroutineType(types: !9) +!9 = !{!10, !11} +!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) +!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s1", file: !1, line: 1, size: 64, elements: !13) +!13 = !{!14, !15} +!14 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !12, file: !1, line: 1, baseType: !10, size: 32) +!15 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !12, file: !1, line: 1, baseType: !10, size: 32, offset: 32) +!16 = !{!17} +!17 = !DILocalVariable(name: "arg", arg: 1, scope: !7, file: !1, line: 2, type: !11) +!18 = !{!19, !19, i64 0} +!19 = !{!"any pointer", !20, i64 0} +!20 = !{!"omnipotent char", !21, i64 0} +!21 = !{!"Simple C/C++ TBAA"} +!22 = !DILocation(line: 2, column: 20, scope: !7) +!23 = !DILocation(line: 2, column: 34, scope: !7) +!24 = !DILocation(line: 2, column: 39, scope: !7) +!25 = !{!26, !27, i64 0} +!26 = !{!"s1", !27, i64 0, !27, i64 4} +!27 = !{!"int", !20, i64 0} +!28 = !DILocation(line: 2, column: 27, scope: !7) +!29 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !30) +!30 = !{!31} +!31 = !DILocalVariable(name: "arg", arg: 1, scope: !29, file: !1, line: 3, type: !11) +!32 = !DILocation(line: 3, column: 20, scope: !29) +!33 = !DILocation(line: 3, column: 34, scope: !29) +!34 = !DILocation(line: 3, column: 39, scope: !29) +!35 = !DILocation(line: 3, column: 27, scope: !29)