alok added a comment.
In D123787#3452970 <https://reviews.llvm.org/D123787#3452970>, @aprantl wrote:
>> For an example, if thread local variable is present in copyin clause
>> (testcase attached with the
>
> patch), parameter with same name is generated as parameter to artificial
> function. When user
> inquires the thread Local variable, its debug info is hidden by the
> parameter. The debug info
> for parameters (for thread local) must be suppressed.
>
> What does the dwarfdump output for the old behavior look like? Are the two in
> the same scope?
The dwarfdump output looks like below. DIE (0x00000023) is for actual user
defined variable and artificial one DIE (0x000000b1) is at local scope, the one
at local scope gets precedence.
0x0000000c: DW_TAG_compile_unit
DW_AT_producer ("clang version 14.0.0")
DW_AT_language (DW_LANG_C99)
DW_AT_name ("debug_threadprivate_copyin.c")
DW_AT_str_offsets_base (0x00000008)
DW_AT_stmt_list (0x00000000)
DW_AT_comp_dir ("/home/alok/amdllvm/build.llvm.d")
DW_AT_low_pc (0x0000000000000000)
DW_AT_high_pc (0x000000000000029b)
DW_AT_addr_base (0x00000008)
0x00000023: DW_TAG_variable
DW_AT_name ("gbl_dynamic_int")
DW_AT_type (0x00000036 "int")
DW_AT_external (true)
DW_AT_decl_file ("debug_threadprivate_copyin.c")
DW_AT_decl_line (22)
DW_AT_location (DW_OP_const8u 0x0,
DW_OP_GNU_push_tls_address)
0x00000089: DW_TAG_subprogram
DW_AT_low_pc (0x0000000000000090)
DW_AT_high_pc (0x0000000000000260)
DW_AT_frame_base (DW_OP_reg6 RBP)
DW_AT_call_all_calls (true)
DW_AT_name (".omp_outlined._debug__")
DW_AT_decl_file ("debug_threadprivate_copyin.c")
DW_AT_decl_line (35)
DW_AT_prototyped (true)
0x000000b1: DW_TAG_formal_parameter
DW_AT_location (DW_OP_fbreg -32)
DW_AT_name ("gbl_dynamic_int")
DW_AT_decl_file ("debug_threadprivate_copyin.c")
DW_AT_decl_line (22)
DW_AT_type (0x00000154 "int &")
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D123787/new/
https://reviews.llvm.org/D123787
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