derek.holloway
7502bf64a4
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40 lines
1.4 KiB
LLVM
40 lines
1.4 KiB
LLVM
; RUN: llc -mtriple=bpfel -mcpu=v3 -filetype=obj -o %t1 %s
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; RUN: llvm-objcopy --dump-section='.BTF'=%t2 %t1
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; RUN: %python %p/print_btf.py %t2 | FileCheck -check-prefixes=CHECK-BTF %s
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; RUN: llc -mtriple=bpfel -mcpu=v3 < %s | FileCheck -check-prefixes=CHECK %s
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; BPFTargetMachine Options.NoTrapAfterNoreturn has been set to true,
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; so in below code, 'unreachable' will become a noop and
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; llvm.trap() will become 'call __bpf_trap' after selectiondag.
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define dso_local void @foo(i32 noundef %0) {
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tail call void @llvm.trap()
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unreachable
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}
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; CHECK: .Lfunc_begin0:
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; CHECK-NEXT: .cfi_startproc
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: call __bpf_trap
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; CHECK-NEXT: exit
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; CHECK-NEXT: .Lfunc_end0:
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; CHECK-BTF: [1] FUNC_PROTO '(anon)' ret_type_id=0 vlen=0
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; CHECK-BTF: [2] FUNC '__bpf_trap' type_id=1 linkage=extern
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; CHECK-BTF: [3] DATASEC '.ksyms' size=0 vlen=1
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; CHECK-BTF: type_id=2 offset=0 size=0
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declare void @llvm.trap() #1
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attributes #1 = {noreturn}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5, !6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, emissionKind: FullDebug)
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!1 = !DIFile(filename: "test_trap.c", directory: "/some/dir")
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!2 = !{i32 7, !"Dwarf Version", i32 5}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 7, !"frame-pointer", i32 2}
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!6 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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