| ; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s |
| ; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s |
| ; Source code: |
| ; unsigned long long load_byte(void *skb, |
| ; unsigned long long off) asm("llvm.bpf.load.byte"); |
| ; unsigned long long test(void *skb) { |
| ; return load_byte(skb, 10); |
| ; } |
| ; Compilation flag: |
| ; clang -target bpf -O2 -g -S -emit-llvm test.c |
| |
| ; Function Attrs: nounwind readonly |
| define dso_local i64 @test(i8* readonly %skb) local_unnamed_addr #0 !dbg !13 { |
| entry: |
| call void @llvm.dbg.value(metadata i8* %skb, metadata !17, metadata !DIExpression()), !dbg !18 |
| %call = tail call i64 @llvm.bpf.load.byte(i8* %skb, i64 10), !dbg !19 |
| ret i64 %call, !dbg !20 |
| } |
| |
| ; CHECK: .section .BTF,"",@progbits |
| ; CHECK-NEXT: .short 60319 # 0xeb9f |
| ; CHECK-NEXT: .byte 1 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .long 24 |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long 60 |
| ; CHECK-NEXT: .long 60 |
| ; CHECK-NEXT: .long 78 |
| ; CHECK-NEXT: .long 0 # BTF_KIND_PTR(id = 1) |
| ; CHECK-NEXT: .long 33554432 # 0x2000000 |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 2) |
| ; CHECK-NEXT: .long 218103809 # 0xd000001 |
| ; CHECK-NEXT: .long 3 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long 1 |
| ; CHECK-NEXT: .long 5 # BTF_KIND_INT(id = 3) |
| ; CHECK-NEXT: .long 16777216 # 0x1000000 |
| ; CHECK-NEXT: .long 8 |
| ; CHECK-NEXT: .long 64 # 0x40 |
| ; CHECK-NEXT: .long 28 # BTF_KIND_FUNC(id = 4) |
| ; CHECK-NEXT: .long 201326593 # 0xc000001 |
| ; CHECK-NEXT: .long 2 |
| ; CHECK-NEXT: .byte 0 # string offset=0 |
| ; CHECK-NEXT: .ascii "skb" # string offset=1 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "long long unsigned int" # string offset=5 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "test" # string offset=28 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii ".text" # string offset=33 |
| ; CHECK-NEXT: .byte 0 |
| ; CHECK-NEXT: .ascii "/tmp/home/yhs/work/tests/extern/test.c" # string offset=39 |
| ; CHECK-NEXT: .byte 0 |
| |
| ; Function Attrs: nounwind readonly |
| declare !dbg !4 i64 @llvm.bpf.load.byte(i8*, i64) #1 |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| attributes #0 = { nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "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" } |
| attributes #1 = { nounwind readonly } |
| attributes #2 = { nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!9, !10, !11} |
| !llvm.ident = !{!12} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git 907019d835895443b198afcd992c42c9d3478fdf)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/extern") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "load_byte", linkageName: "llvm.bpf.load.byte", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !8, !7} |
| !7 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned) |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64) |
| !9 = !{i32 7, !"Dwarf Version", i32 4} |
| !10 = !{i32 2, !"Debug Info Version", i32 3} |
| !11 = !{i32 1, !"wchar_size", i32 4} |
| !12 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 907019d835895443b198afcd992c42c9d3478fdf)"} |
| !13 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 3, type: !14, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16) |
| !14 = !DISubroutineType(types: !15) |
| !15 = !{!7, !8} |
| !16 = !{!17} |
| !17 = !DILocalVariable(name: "skb", arg: 1, scope: !13, file: !1, line: 3, type: !8) |
| !18 = !DILocation(line: 0, scope: !13) |
| !19 = !DILocation(line: 4, column: 10, scope: !13) |
| !20 = !DILocation(line: 4, column: 3, scope: !13) |