Yonghong Song 95dad60d32 [BPF] Generate BTF DebugInfo under BPF target ...

This patch implements BTF (BPF Type Format).
The BTF is the debug info format for BPF, introduced
in the below linux patch:
  https://github.com/torvalds/linux/commit/69b693f0aefa0ed521e8bd02260523b5ae446ad7#diff-06fb1c8825f653d7e539058b72c83332
and further extended several times, e.g.,
  https://www.spinics.net/lists/netdev/msg534640.html
  https://www.spinics.net/lists/netdev/msg538464.html
  https://www.spinics.net/lists/netdev/msg540246.html

The main advantage of implementing in LLVM is:
   . better integration/deployment as no extra tools are needed.
   . bpf JIT based compilation (like bcc, bpftrace, etc.) can get
     BTF without much extra effort.
   . BTF line_info needs selective source codes, which can be
     easily retrieved when inside the compiler.

This patch implemented BTF generation by registering a BPF
specific DebugHandler in BPFAsmPrinter.

Signed-off-by: Yonghong Song <yhs@fb.com>

Differential Revision: https://reviews.llvm.org/D55752

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349640 91177308-0d34-0410-b5e6-96231b3b80d8

2018-12-19 16:40:25 +00:00

..

BTF

[BPF] Generate BTF DebugInfo under BPF target

2018-12-19 16:40:25 +00:00

32-bit-subreg-alu.ll

bpf: New codegen testcases for 32-bit subregister support

2018-02-23 23:49:33 +00:00

32-bit-subreg-cond-select.ll

bpf: New codegen testcases for 32-bit subregister support

2018-02-23 23:49:33 +00:00

32-bit-subreg-load-store.ll

bpf: New codegen testcases for 32-bit subregister support

2018-02-23 23:49:33 +00:00

32-bit-subreg-peephole.ll

bpf: fix incorrect SELECT_CC lowering

2018-04-03 03:56:37 +00:00

alu8.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

atomics.ll

[bpf] add BPF disassembler

2016-11-20 02:25:00 +00:00

basictest.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

byval.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

cc_args_be.ll

[bpf] allow direct and indirect calls

2017-11-19 01:35:00 +00:00

cc_args.ll

[bpf] allow direct and indirect calls

2017-11-19 01:35:00 +00:00

cc_ret.ll

[bpf] allow direct and indirect calls

2017-11-19 01:35:00 +00:00

cmp.ll

bpf: fix incorrect SELECT_CC lowering

2018-04-03 03:56:37 +00:00

dwarfdump.ll

[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.

2018-05-09 02:40:45 +00:00

elf-symbol-information.ll

[bpf] Test case for symbol information in object file

2018-09-22 17:31:01 +00:00

ex1.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

fi_ri.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

inline_asm.ll

bpf: add inline-asm support

2017-09-18 23:29:36 +00:00

intrinsics.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

lit.local.cfg

bpf: add missing lit.local.cfg

2015-01-24 18:20:52 +00:00

load.ll

convert bpf assembler to look like kernel verifier output

2016-11-18 02:32:35 +00:00

loops.ll

convert bpf assembler to look like kernel verifier output

2016-11-18 02:32:35 +00:00

many_args1.ll

[BPF] Remove exit-on-error flag in test (PR27766)

2016-05-23 14:57:19 +00:00

many_args2.ll

[BPF] Remove exit-on-error flag in test (PR27767)

2016-05-26 15:23:50 +00:00

mem_offset_be.ll

bpf: add " ll" in the LD_IMM64 asmstring

2017-09-11 23:43:35 +00:00

mem_offset.ll

[bpf] Fix memory offset check for loads and stores

2017-04-13 22:24:13 +00:00

memcpy-expand-in-order.ll

bpf: add missing RegState to notify MachineInstr verifier necessary register usage

2018-07-27 16:58:52 +00:00

objdump_atomics.ll

[bpf] add BPF disassembler

2016-11-20 02:25:00 +00:00

objdump_cond_op_2.ll

bpf: print backward branch target properly

2017-11-16 19:15:36 +00:00

objdump_cond_op.ll

bpf: print backward branch target properly

2017-11-16 19:15:36 +00:00

objdump_imm_hex.ll

bpf: add support for objdump -print-imm-hex

2017-12-20 19:39:58 +00:00

objdump_intrinsics.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

objdump_trivial.ll

[bpf] error when unknown bpf helper is called

2017-01-17 07:26:17 +00:00

reloc.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

remove_truncate_1.ll

bpf: remove unnecessary truncate operation

2017-06-29 15:18:54 +00:00

remove_truncate_2.ll

bpf: remove unnecessary truncate operation

2017-06-29 15:18:54 +00:00

remove_truncate_3.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

remove_truncate_4.ll

[BPF] Teach DAG2DAG AND elimination about load intrinsics

2018-01-16 07:27:19 +00:00

remove_truncate_5.ll

bpf: fix a bug in dag2dag optimization for loads from readonly section

2018-02-15 17:06:45 +00:00

rodata_1.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

rodata_2.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

rodata_3.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

rodata_4.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

sanity.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

sdiv_error.ll

BPF: emit an error message for unsupported signed division operation

2016-03-18 22:02:47 +00:00

select_ri.ll

bpf: fix incorrect SELECT_CC lowering

2018-04-03 03:56:37 +00:00

setcc.ll

bpf: add variants of -mcpu=# and support for additional jmp insns

2017-08-23 04:25:57 +00:00

shifts.ll

[BPF] Return true in enableMultipleCopyHints().

2018-02-18 10:09:54 +00:00

sockex2.ll

Followup on Proposal to move MIR physical register namespace to '$' sigil.

2018-01-31 22:04:26 +00:00

struct_ret1.ll

[BPF] Remove exit-on-error from tests (PR27768, PR27769)

2016-05-30 08:28:34 +00:00

struct_ret2.ll

[BPF] Remove exit-on-error from tests (PR27768, PR27769)

2016-05-30 08:28:34 +00:00

undef.ll

Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)

2018-01-19 17:13:12 +00:00

vararg1.ll

…

warn-call.ll

[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.

2018-05-09 02:40:45 +00:00

warn-stack.ll

[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.

2018-05-09 02:40:45 +00:00

xadd.ll

bpf: check illegal usage of XADD insn return value

2018-09-20 22:24:27 +00:00