54 lines
2.3 KiB
LLVM
54 lines
2.3 KiB
LLVM
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; RUN: opt < %s -passes='default<O2>' | llc -march=bpfel -filetype=asm -o /dev/null -
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; RUN: opt < %s -passes='default<O0>' | llc -march=bpfel -filetype=asm -o /dev/null -
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; IR generated by
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; $ cat /tmp/a.c
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; struct ss { int a; };
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; int foo() { return __builtin_btf_type_id(0, 0) + __builtin_preserve_type_info(*(struct ss *)0, 0); }
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; $ clang -target bpf -g -S -emit-llvm t.c -Xclang -disable-llvm-passes /tmp/a.c
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target triple = "bpf"
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; Function Attrs: noinline nounwind optnone
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define dso_local i32 @foo() #0 !dbg !9 {
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entry:
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%0 = call i64 @llvm.bpf.btf.type.id(i32 0, i64 0), !dbg !11, !llvm.preserve.access.index !4
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%1 = call i32 @llvm.bpf.preserve.type.info(i32 1, i64 0), !dbg !12, !llvm.preserve.access.index !13
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%conv = zext i32 %1 to i64, !dbg !12
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%add = add i64 %0, %conv, !dbg !16
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%conv1 = trunc i64 %add to i32, !dbg !11
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ret i32 %conv1, !dbg !17
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}
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; Function Attrs: nounwind readnone
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declare i64 @llvm.bpf.btf.type.id(i32, i64) #1
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; Function Attrs: nounwind readnone
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declare i32 @llvm.bpf.preserve.type.info(i32, i64) #1
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attributes #0 = { noinline nounwind optnone }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!5, !6, !7}
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!llvm.ident = !{!8}
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!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)
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!1 = !DIFile(filename: "C:/src/tmp\\a.c", directory: "C:\\src\\llvm-project")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!5 = !{i32 7, !"Dwarf Version", i32 4}
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!6 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = !{i32 1, !"wchar_size", i32 4}
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!8 = !{!"clang version 12.0.0"}
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!9 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !10, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!10 = !DISubroutineType(types: !3)
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!11 = !DILocation(line: 2, column: 20, scope: !9)
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!12 = !DILocation(line: 2, column: 50, scope: !9)
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!13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "ss", file: !1, line: 1, size: 32, elements: !14)
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!14 = !{!15}
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !13, file: !1, line: 1, baseType: !4, size: 32)
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!16 = !DILocation(line: 2, column: 48, scope: !9)
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!17 = !DILocation(line: 2, column: 13, scope: !9)
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