d46a6a9e68
Previously, patchable extern relocations are introduced to patch external variables used for multi versioning in compile once, run everywhere use case. The load instruction will be converted into a move with an patchable immediate which can be changed by bpf loader on the host. The kernel verifier has evolved and is able to load and propagate constant values, so compiler relocation becomes unnecessary. This patch removed codes related to this. Differential Revision: https://reviews.llvm.org/D68760 llvm-svn: 374367
83 lines
4.1 KiB
LLVM
83 lines
4.1 KiB
LLVM
; 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:
|
|
; void f(void) { }
|
|
; Compilation flag:
|
|
; clang -target bpf -O2 -g -gdwarf-5 -gembed-source -S -emit-llvm t.c
|
|
;
|
|
; This test embeds the source code in the IR, so the line info should have
|
|
; correct reference to the lines in the string table.
|
|
|
|
; Function Attrs: norecurse nounwind readnone
|
|
define dso_local void @f() local_unnamed_addr #0 !dbg !7 {
|
|
entry:
|
|
ret void, !dbg !10
|
|
}
|
|
|
|
; 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 24
|
|
; CHECK-NEXT: .long 24
|
|
; CHECK-NEXT: .long 35
|
|
; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1)
|
|
; CHECK-NEXT: .long 218103808 # 0xd000000
|
|
; CHECK-NEXT: .long 0
|
|
; CHECK-NEXT: .long 1 # BTF_KIND_FUNC(id = 2)
|
|
; CHECK-NEXT: .long 201326592 # 0xc000000
|
|
; CHECK-NEXT: .long 1
|
|
; CHECK-NEXT: .byte 0 # string offset=0
|
|
; CHECK-NEXT: .byte 102 # string offset=1
|
|
; CHECK-NEXT: .byte 0
|
|
; CHECK-NEXT: .ascii ".text" # string offset=3
|
|
; CHECK-NEXT: .byte 0
|
|
; CHECK-NEXT: .ascii "/tmp/t.c" # string offset=9
|
|
; CHECK-NEXT: .byte 0
|
|
; CHECK-NEXT: .ascii "void f(void) { }" # string offset=18
|
|
; CHECK-NEXT: .byte 0
|
|
; CHECK-NEXT: .section .BTF.ext,"",@progbits
|
|
; CHECK-NEXT: .short 60319 # 0xeb9f
|
|
; CHECK-NEXT: .byte 1
|
|
; CHECK-NEXT: .byte 0
|
|
; CHECK-NEXT: .long 32
|
|
; CHECK-NEXT: .long 0
|
|
; CHECK-NEXT: .long 20
|
|
; CHECK-NEXT: .long 20
|
|
; CHECK-NEXT: .long 28
|
|
; CHECK-NEXT: .long 48
|
|
; CHECK-NEXT: .long 0
|
|
; CHECK-NEXT: .long 8 # FuncInfo
|
|
; CHECK-NEXT: .long 3 # FuncInfo section string offset=3
|
|
; CHECK-NEXT: .long 1
|
|
; CHECK-NEXT: .long .Lfunc_begin0
|
|
; CHECK-NEXT: .long 2
|
|
; CHECK-NEXT: .long 16 # LineInfo
|
|
; CHECK-NEXT: .long 3 # LineInfo section string offset=3
|
|
; CHECK-NEXT: .long 1
|
|
; CHECK-NEXT: .long .Ltmp{{[0-9]+}}
|
|
; CHECK-NEXT: .long 9
|
|
; CHECK-NEXT: .long 18
|
|
; CHECK-NEXT: .long 1040 # Line 1 Col 16
|
|
|
|
attributes #0 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5}
|
|
!llvm.ident = !{!6}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
|
|
!1 = !DIFile(filename: "t.c", directory: "/tmp", checksumkind: CSK_MD5, checksum: "978599fafe3a080b456e3d95a3710359", source: "void f(void) { }\0A")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Dwarf Version", i32 5}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
|
!6 = !{!"clang version 8.0.0 (trunk 344789) (llvm/trunk 344782)"}
|
|
!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, isOptimized: true, unit: !0, retainedNodes: !2)
|
|
!8 = !DISubroutineType(types: !9)
|
|
!9 = !{null}
|
|
!10 = !DILocation(line: 1, column: 16, scope: !7)
|