forked from OSchip/llvm-project
360a4e2ca6
For multi-dimensional array like below
int a[2][3];
the previous implementation generates BTF_KIND_ARRAY type
like below:
. element_type: int
. index_type: unsigned int
. number of elements: 6
This is not the best way to represent arrays, esp.,
when converting BTF back to headers and users will see
int a[6];
instead.
This patch generates proper support for multi-dimensional arrays.
For "int a[2][3]", the two BTF_KIND_ARRAY types will be
generated:
Type #n:
. element_type: int
. index_type: unsigned int
. number of elements: 3
Type #(n+1):
. element_type: #n
. index_type: unsigned int
. number of elements: 2
The linux kernel already supports such a multi-dimensional
array representation properly.
Signed-off-by: Yonghong Song <yhs@fb.com>
Differential Revision: https://reviews.llvm.org/D59943
llvm-svn: 357215
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| .. | ||
| BTF | ||
| 32-bit-subreg-alu.ll | ||
| 32-bit-subreg-cond-select.ll | ||
| 32-bit-subreg-load-store.ll | ||
| 32-bit-subreg-peephole.ll | ||
| alu8.ll | ||
| atomics.ll | ||
| basictest.ll | ||
| byval.ll | ||
| cc_args.ll | ||
| cc_args_be.ll | ||
| cc_ret.ll | ||
| cmp.ll | ||
| dwarfdump.ll | ||
| elf-symbol-information.ll | ||
| ex1.ll | ||
| fi_ri.ll | ||
| inline_asm.ll | ||
| intrinsics.ll | ||
| lit.local.cfg | ||
| load.ll | ||
| loops.ll | ||
| many_args1.ll | ||
| many_args2.ll | ||
| mem_offset.ll | ||
| mem_offset_be.ll | ||
| memcpy-expand-in-order.ll | ||
| objdump_atomics.ll | ||
| objdump_cond_op.ll | ||
| objdump_cond_op_2.ll | ||
| objdump_imm_hex.ll | ||
| objdump_intrinsics.ll | ||
| objdump_static_var.ll | ||
| objdump_trivial.ll | ||
| reloc-btf.ll | ||
| reloc.ll | ||
| remove_truncate_1.ll | ||
| remove_truncate_2.ll | ||
| remove_truncate_3.ll | ||
| remove_truncate_4.ll | ||
| remove_truncate_5.ll | ||
| rodata_1.ll | ||
| rodata_2.ll | ||
| rodata_3.ll | ||
| rodata_4.ll | ||
| sanity.ll | ||
| sdiv_error.ll | ||
| select_ri.ll | ||
| setcc.ll | ||
| shifts.ll | ||
| sockex2.ll | ||
| struct_ret1.ll | ||
| struct_ret2.ll | ||
| undef.ll | ||
| vararg1.ll | ||
| warn-call.ll | ||
| warn-stack.ll | ||
| xadd.ll | ||
| xadd_legal.ll | ||