diff --git a/llvm/lib/Target/BPF/BPF.h b/llvm/lib/Target/BPF/BPF.h --- a/llvm/lib/Target/BPF/BPF.h +++ b/llvm/lib/Target/BPF/BPF.h @@ -46,11 +46,15 @@ public: BPFAbstractMemberAccessPass(BPFTargetMachine *TM) : TM(TM) {} PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); + + static bool isRequired() { return true; } }; class BPFPreserveDITypePass : public PassInfoMixin { public: PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); + + static bool isRequired() { return true; } }; } // namespace llvm diff --git a/llvm/test/CodeGen/BPF/optnone-2.ll b/llvm/test/CodeGen/BPF/optnone-2.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/BPF/optnone-2.ll @@ -0,0 +1,52 @@ +; RUN: opt < %s -passes='default' | llc -march=bpfel -filetype=asm -o /dev/null - +; TODO: add -O0 once that's supported + +; IR generated by +; $ cat /tmp/a.c +; struct ss { int a; }; +; int foo() { return __builtin_btf_type_id(0, 0) + __builtin_preserve_type_info(*(struct ss *)0, 0); } +; $ clang -target bpf -g -S -emit-llvm t.c -Xclang -disable-llvm-passes /tmp/a.c + +target triple = "bpf" + +; Function Attrs: noinline nounwind optnone +define dso_local i32 @foo() #0 !dbg !9 { +entry: + %0 = call i32 @llvm.bpf.btf.type.id(i32 0, i64 0), !dbg !12, !llvm.preserve.access.index !4 + %1 = call i32 @llvm.bpf.preserve.type.info(i32 1, i64 0), !dbg !13, !llvm.preserve.access.index !14 + %add = add i32 %0, %1, !dbg !17 + ret i32 %add, !dbg !18 +} + +; Function Attrs: nounwind readnone +declare i32 @llvm.bpf.btf.type.id(i32, i64) #1 + +; Function Attrs: nounwind readnone +declare i32 @llvm.bpf.preserve.type.info(i32, i64) #1 + +attributes #0 = { noinline nounwind optnone } +attributes #1 = { nounwind readnone } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!5, !6, !7} +!llvm.ident = !{!8} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None) +!1 = !DIFile(filename: "C:/src/tmp\\a.c", directory: "C:\\src\\llvm-project") +!2 = !{} +!3 = !{!4} +!4 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!5 = !{i32 7, !"Dwarf Version", i32 4} +!6 = !{i32 2, !"Debug Info Version", i32 3} +!7 = !{i32 1, !"wchar_size", i32 4} +!8 = !{!"clang version 12.0.0"} +!9 = distinct !DISubprogram(name: "foo", scope: !10, file: !10, line: 2, type: !11, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) +!10 = !DIFile(filename: "C:/src/tmp/a.c", directory: "") +!11 = !DISubroutineType(types: !3) +!12 = !DILocation(line: 2, column: 21, scope: !9) +!13 = !DILocation(line: 2, column: 51, scope: !9) +!14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "ss", file: !10, line: 1, size: 32, elements: !15) +!15 = !{!16} +!16 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !14, file: !10, line: 1, baseType: !4, size: 32) +!17 = !DILocation(line: 2, column: 49, scope: !9) +!18 = !DILocation(line: 2, column: 14, scope: !9)