1; RUN: opt < %s -passes='default<O2>' | llc -march=bpfel -filetype=asm -o /dev/null - 2; RUN: opt < %s -passes='default<O0>' | llc -march=bpfel -filetype=asm -o /dev/null - 3 4; IR generated by 5; $ cat /tmp/a.c 6; 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.c 9 10target triple = "bpf" 11 12; Function Attrs: noinline nounwind optnone 13define 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 !4 16 %1 = call i32 @llvm.bpf.preserve.type.info(i32 1, i64 0), !dbg !12, !llvm.preserve.access.index !13 17 %conv = zext i32 %1 to i64, !dbg !12 18 %add = add i64 %0, %conv, !dbg !16 19 %conv1 = trunc i64 %add to i32, !dbg !11 20 ret i32 %conv1, !dbg !17 21} 22 23; Function Attrs: nounwind readnone 24declare i64 @llvm.bpf.btf.type.id(i32, i64) #1 25 26; Function Attrs: nounwind readnone 27declare i32 @llvm.bpf.preserve.type.info(i32, i64) #1 28 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