On Tue, May 3, 2011 at 6:33 AM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Sat, Apr 16, 2011 at 1:11 AM, Jakub Jelinek <ja...@redhat.com> wrote: >> On Fri, Mar 25, 2011 at 12:32:37PM +0100, Jakub Jelinek wrote: >>> As I said in my GCC Summit talk, currently we just give up on >>> any floating point/_Decimal*/__int128 and for 32-bit targets even >>> long long expressions, as those can't be represented in DWARF4, >>> while var-tracking has all that often available. >> >> ... >> >> This is an updated patch for the typed DWARF stack support, >> against current trunk. I've changed DW_OP_GNU_reinterpret >> from 0xf8 to 0xf9, because 0xf8 is taken by PGI and e.g. binutils prefers no >> clashes between extension opcodes, otherwise readers would need to switch >> based on producer. When we are close to running out of extension opcodes, >> we may reconsider (especially as the HP block is quite large). >> >> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk? >> >> 2011-04-16 Jakub Jelinek <ja...@redhat.com> >> >> * dwarf2.h (DW_OP_GNU_const_type, DW_OP_GNU_regval_type, >> DW_OP_GNU_deref_type, DW_OP_GNU_convert, DW_OP_GNU_reinterpret): New. >> >> * dwarf2out.c (get_address_mode): New inline. >> (mem_loc_descriptor): Add MEM_MODE parameter, adjust recursive calls, >> if not dwarf_strict emit >> DW_OP_GNU_{{const,regval,deref}_type,convert,reinterpret} when >> desirable. Handle FLOAT_EXTEND, FLOAT_TRUNCATE, FLOAT, >> UNSIGNED_FLOAT, FIX and UNSIGNED_FIX. Just return NULL for >> FMA, STRICT_LOW_PART, CONST_VECTOR and CONST_FIXED. >> (dwarf2out_frame_debug_cfa_expression, reg_loc_descriptor, >> dw_loc_list_1, cst_pool_loc_descr, loc_list_from_tree): Adjust >> mem_loc_descriptor callers. >> (dwarf_stack_op_name, size_of_loc_descr, output_loc_operands, >> output_loc_operands_raw, hash_loc_operands, compare_loc_operands): >> Handle DW_OP_GNU_const_type, DW_OP_GNU_regval_type, >> DW_OP_GNU_deref_type, DW_OP_GNU_convert and DW_OP_GNU_reinterpret. >> (base_types): New variable. >> (get_base_type_offset, calc_base_type_die_sizes, >> base_type_for_mode, mark_base_types, base_type_cmp, >> move_marked_base_types): New functions. >> (calc_die_sizes): Assert that die_offset is 0 or equal to >> next_die_offset. >> (loc_descriptor): Only handle here lowpart SUBREGs of REG, for >> others defer to mem_loc_descriptor. Adjust mem_loc_descriptor >> callers. If not dwarf_strict, call mem_loc_descriptor even for >> non-MODE_INT modes or MODE_INT modes larger than DWARF2_ADDR_SIZE. >> (gen_subprogram_die): Don't give up on call site parameters >> with non-integral or large integral modes. Adjust >> mem_loc_descriptor callers. >> (prune_unused_types): Call prune_unused_types_mark on base_types >> vector entries. >> (resolve_addr): Call mark_base_types. >> (dwarf2out_finish): Call move_marked_base_types. > > This caused: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48853 >
This also caused: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48928 -- H.J.