From 841424ccaf396ea0dfbfc1e27eeabe3ef5889cd0 Mon Sep 17 00:00:00 2001 From: jakub Date: Wed, 22 Jun 2011 10:41:58 +0000 Subject: PR debug/47858 * gimple.h (enum gimple_debug_subcode): Add GIMPLE_DEBUG_SOURCE_BIND. (gimple_build_debug_source_bind_stat): New prototype. (gimple_build_debug_source_bind): Define. (gimple_debug_source_bind_p, gimple_debug_source_bind_get_var, gimple_debug_source_bind_get_value, gimple_debug_source_bind_get_value_ptr, gimple_debug_source_bind_set_var, gimple_debug_source_bind_set_value): New inlines. * gimple.c (gimple_build_debug_source_bind_stat): New function. * gimple-pretty-print.c (dump_gimple_debug): Handle GIMPLE_DEBUG_SOURCE_BIND. * sese.c (rename_uses): Handle gimple_debug_source_bind_p. * tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Likewise. * tree-parloops.c (eliminate_local_variables, separate_decls_in_region): Likewise. (separate_decls_in_region_debug): Renamed from separate_decls_in_region_debug_bind. Handle gimple_debug_source_bind_p. * tree.h (decl_debug_args_lookup, decl_debug_args_insert): New prototypes. (DECL_HAS_DEBUG_ARGS_P): Define. (struct tree_function_decl): Add has_debug_args_flag field. * tree.c (debug_args_for_decl): New variable. (decl_debug_args_lookup, decl_debug_args_insert): New functions. * tree-into-ssa.c (mark_def_sites): Handle uses in debug stmts. (rewrite_debug_stmt_uses): New function. (rewrite_stmt): Use it to rewrite debug stmt uses. * rtl.def (DEBUG_PARAMETER_REF): New. * rtl.h (DEBUG_PARAMETER_REF_DECL): Define. * cselib.c (rtx_equal_for_cselib_1, cselib_hash_rtx): Handle DEBUG_PARAMETER_REF. * rtl.c (rtx_equal_p_cb, rtx_equal_p, iterative_hash_rtx): Likewise. * print-rtl.c (print_rtx): Likewise. * tree-sra.c (sra_ipa_reset_debug_stmts): Prefer replacing of SSA_NAMEs with DEBUG_EXPR_DECLs initialized in source bind debug stmts in the first bb. * tree-inline.c (remap_ssa_name): If remapping default def of a PARM_DECL fails, map to a DEBUG_EXPR_DECL set in a source bind debug stmt. (remap_gimple_stmt): Handle gimple_debug_source_bind_p. (maybe_move_debug_stmts_to_successors): Likewise. (copy_debug_stmt): Likewise. Avoid shadowing a variable. (tree_function_versioning): If DECL_HAS_DEBUG_ARGS_P, copy debug args vector from old_decl to new_decl. * ipa-prop.c (ipa_modify_call_arguments): For optimized away or modified parameters, add debug bind stmts before call setting DEBUG_EXPR_DECL which is remembered in debug args vector. * cfgexpand.c (expand_call_stmt): Call expand_debug_expr on DECL_DEBUG_EXPRs from debug args vector. (expand_debug_source_expr): New function. (expand_debug_locations): Use it for source bind insns. (expand_gimple_basic_block): Handle gimple_debug_source_bind_p. * var-tracking.c (prepare_call_arguments): Add debug args to call_arguments if any. * dwarf2out.c (dwarf_stack_op_name, size_of_loc_descr, output_loc_operands, output_loc_operands_raw, resolve_addr_in_expr, compare_loc_operands): Handle DW_OP_GNU_parameter_ref. (get_ref_die_offset, parameter_ref_descriptor): New functions. (mem_loc_descriptor): Handle DEBUG_PARAMETER_REF. (gen_subprogram_die): Handle parameters identified by DEBUG_PARAMETER_REF. * dwarf2.h (enum dwarf_location_atom): Add DW_OP_GNU_parameter_ref. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@175288 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/rtl.def | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gcc/rtl.def') diff --git a/gcc/rtl.def b/gcc/rtl.def index 8f04b2fe3cd..a7de8f7b4aa 100644 --- a/gcc/rtl.def +++ b/gcc/rtl.def @@ -727,6 +727,10 @@ DEF_RTL_EXPR(DEBUG_IMPLICIT_PTR, "debug_implicit_ptr", "t", RTX_OBJ) parameter. */ DEF_RTL_EXPR(ENTRY_VALUE, "entry_value", "0", RTX_OBJ) +/* Used in VAR_LOCATION for a reference to a parameter that has + been optimized away completely. */ +DEF_RTL_EXPR(DEBUG_PARAMETER_REF, "debug_parameter_ref", "t", RTX_OBJ) + /* All expressions from this point forward appear only in machine descriptions. */ #ifdef GENERATOR_FILE -- cgit v1.2.1