131 lines
6.5 KiB
LLVM
131 lines
6.5 KiB
LLVM
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; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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; Source code:
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; static volatile char a __attribute__((section("maps"))) = 3;
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; int foo() {
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; static volatile short b __attribute__((section("maps"))) = 4;
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; return a + b;
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; }
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; Compilation flag:
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; clang -target bpf -O2 -g -S -emit-llvm test.c
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@foo.b = internal global i16 4, section "maps", align 2, !dbg !0
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@a = internal global i8 3, section "maps", align 1, !dbg !10
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; Function Attrs: norecurse nounwind
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define dso_local i32 @foo() local_unnamed_addr #0 !dbg !2 {
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%1 = load volatile i8, i8* @a, align 1, !dbg !20, !tbaa !21
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%2 = sext i8 %1 to i32, !dbg !20
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%3 = load volatile i16, i16* @foo.b, align 2, !dbg !24, !tbaa !25
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%4 = sext i16 %3 to i32, !dbg !24
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%5 = add nsw i32 %4, %2, !dbg !27
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ret i32 %5, !dbg !28
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}
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; CHECK: .section .BTF,"",@progbits
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; CHECK-NEXT: .short 60319 # 0xeb9f
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; CHECK-NEXT: .byte 1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .long 24
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 164
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; CHECK-NEXT: .long 164
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; CHECK-NEXT: .long 76
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; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1)
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; CHECK-NEXT: .long 218103808 # 0xd000000
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 2)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 16777248 # 0x1000020
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; CHECK-NEXT: .long 5 # BTF_KIND_FUNC(id = 3)
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; CHECK-NEXT: .long 201326593 # 0xc000001
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 4)
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; CHECK-NEXT: .long 150994944 # 0x9000000
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; CHECK-NEXT: .long 5
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; CHECK-NEXT: .long 52 # BTF_KIND_INT(id = 5)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 16777232 # 0x1000010
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; CHECK-NEXT: .long 58 # BTF_KIND_VAR(id = 6)
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; CHECK-NEXT: .long 234881024 # 0xe000000
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 7)
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; CHECK-NEXT: .long 150994944 # 0x9000000
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; CHECK-NEXT: .long 8
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; CHECK-NEXT: .long 64 # BTF_KIND_INT(id = 8)
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; CHECK-NEXT: .long 16777216 # 0x1000000
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 16777224 # 0x1000008
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; CHECK-NEXT: .long 69 # BTF_KIND_VAR(id = 9)
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; CHECK-NEXT: .long 234881024 # 0xe000000
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; CHECK-NEXT: .long 7
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 71 # BTF_KIND_DATASEC(id = 10)
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; CHECK-NEXT: .long 251658242 # 0xf000002
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 6
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; CHECK-NEXT: .long foo.b
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 9
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; CHECK-NEXT: .long a
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .byte 0 # string offset=0
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; CHECK-NEXT: .ascii "int" # string offset=1
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "foo" # string offset=5
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii ".text" # string offset=9
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "/home/yhs/work/tests/llvm/bug/test.c" # string offset=15
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "short" # string offset=52
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "foo.b" # string offset=58
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "char" # string offset=64
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .byte 97 # string offset=69
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; CHECK-NEXT: .byte 0
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; CHECK-NEXT: .ascii "maps" # string offset=71
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; CHECK-NEXT: .byte 0
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attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!7}
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!llvm.module.flags = !{!16, !17, !18}
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!llvm.ident = !{!19}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 3, type: !14, isLocal: true, isDefinition: true)
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!2 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 2, type: !4, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !7, retainedNodes: !8)
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!3 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/llvm/bug")
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!4 = !DISubroutineType(types: !5)
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!5 = !{!6}
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.20181009 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !8, globals: !9, nameTableKind: None)
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!8 = !{}
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!9 = !{!0, !10}
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!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
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!11 = distinct !DIGlobalVariable(name: "a", scope: !7, file: !3, line: 1, type: !12, isLocal: true, isDefinition: true)
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!12 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !13)
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!13 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!14 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !15)
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!15 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
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!16 = !{i32 2, !"Dwarf Version", i32 4}
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!17 = !{i32 2, !"Debug Info Version", i32 3}
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!18 = !{i32 1, !"wchar_size", i32 4}
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!19 = !{!"clang version 8.0.20181009 "}
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!20 = !DILocation(line: 4, column: 10, scope: !2)
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!21 = !{!22, !22, i64 0}
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!22 = !{!"omnipotent char", !23, i64 0}
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!23 = !{!"Simple C/C++ TBAA"}
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!24 = !DILocation(line: 4, column: 14, scope: !2)
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!25 = !{!26, !26, i64 0}
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!26 = !{!"short", !22, i64 0}
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!27 = !DILocation(line: 4, column: 12, scope: !2)
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!28 = !DILocation(line: 4, column: 3, scope: !2)
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