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1; RUN: opt < %s -passes='default<O2>' | llc -mtriple=bpfel -filetype=asm -o /dev/null -2; RUN: opt < %s -passes='default<O0>' | llc -mtriple=bpfel -filetype=asm -o /dev/null -3 4; IR generated by5; $ cat /tmp/a.c6; struct ss { int a; };7; int foo() { return __builtin_btf_type_id(0, 0) + __builtin_preserve_type_info(*(struct ss *)0, 0); }8; $ clang -target bpf -g -S -emit-llvm t.c -Xclang -disable-llvm-passes /tmp/a.c9 10target triple = "bpf"11 12; Function Attrs: noinline nounwind optnone13define dso_local i32 @foo() #0 !dbg !9 {14entry:15 %0 = call i64 @llvm.bpf.btf.type.id(i32 0, i64 0), !dbg !11, !llvm.preserve.access.index !416 %1 = call i32 @llvm.bpf.preserve.type.info(i32 1, i64 0), !dbg !12, !llvm.preserve.access.index !1317 %conv = zext i32 %1 to i64, !dbg !1218 %add = add i64 %0, %conv, !dbg !1619 %conv1 = trunc i64 %add to i32, !dbg !1120 ret i32 %conv1, !dbg !1721}22 23; Function Attrs: nounwind readnone24declare i64 @llvm.bpf.btf.type.id(i32, i64) #125 26; Function Attrs: nounwind readnone27declare i32 @llvm.bpf.preserve.type.info(i32, i64) #128 29attributes #0 = { noinline nounwind optnone }30attributes #1 = { nounwind readnone }31 32!llvm.dbg.cu = !{!0}33!llvm.module.flags = !{!5, !6, !7}34!llvm.ident = !{!8}35 36!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)37!1 = !DIFile(filename: "C:/src/tmp\\a.c", directory: "C:\\src\\llvm-project")38!2 = !{}39!3 = !{!4}40!4 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)41!5 = !{i32 7, !"Dwarf Version", i32 4}42!6 = !{i32 2, !"Debug Info Version", i32 3}43!7 = !{i32 1, !"wchar_size", i32 4}44!8 = !{!"clang version 12.0.0"}45!9 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !10, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)46!10 = !DISubroutineType(types: !3)47!11 = !DILocation(line: 2, column: 20, scope: !9)48!12 = !DILocation(line: 2, column: 50, scope: !9)49!13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "ss", file: !1, line: 1, size: 32, elements: !14)50!14 = !{!15}51!15 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !13, file: !1, line: 1, baseType: !4, size: 32)52!16 = !DILocation(line: 2, column: 48, scope: !9)53!17 = !DILocation(line: 2, column: 13, scope: !9)54