[multiple changes]

Fri Oct 29 15:25:07 1999  Arnaud Charlet  <charlet@ACT-Europe.FR>

	* gcov.c (DIR_SEPARATOR): Provide default.
	(output_data): Add test for MS-DOS format absolute filename.
	(fancy_abort): Correct program name.
	(open_files): Open all files in binary mode.
	* libgcc2.c (__bb_exit_func): Likewise.

	* profile.c (init_branch_prob): Specify binary when opening files.

	* flags.h (flag_unwind_tables): New decl.
	* toplev.c (flag_unwind_table): New definition.
	(f_options): Add -funwind-tables.
	(decode_g_option): Clarify warning when unknown -g option is given.
	(rest_of_compilation): If inside an inlined external function,
	pretend we are just being declared.

	* dwarf2out.c (dwarf2out_do_frame): Check -funwind_tables.
	(dwarf2out_frame_finish): Likewise.

Fri Oct 29 06:32:44 1999  Geoffrey Keating  <geoffk@cygnus.com>

	* flow.c (propagate_block): When the last reference to a label
 	before an ADDR_VEC is deleted because the reference is a dead
 	store, delete the ADDR_VEC.

Fri Oct 29 07:44:26 1999  Vasco Pedro  <vp@di.fct.unl.pt>

	* fold-const.c (merge_ranges): In not in0, but in1, handle
	upper bounds equal like subset case.

Thu Oct 28 19:22:24 1999  Douglas Rupp <rupp@gnat.com>

	* dbxout.c (dbxout_parms): Generate a second stabs line for parameters
	passed in a register but moved to the stack.

Thu Oct 28 19:12:57 1999  Sam Tardieu  <tardieu@act-europe.fr>

	* gcc.c (pass_exit_codes, greatest_status): New variables.
	(struct option_map): Add entry for "--pass-exit-codes".
	(execute): Update greatest_status if error.
	(display_help): Add documentation for -pass-exit-codes.
	(process_command): Handle -pass-exit-codes.
	(main): Look at pass_exit_codes and greatest_status on call to exit.

Thu Oct 28 18:06:50 1999  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

	* reload.c (find_reloads): Refine test for no input reload
	case to not includes reloads emitted after insn.

	* function.c (find_temp_slots_from_address): Handle sum involving
	a register that points to a temp slot.
	(update_temp_slot_address): Make recursive call if both old and
	new are PLUS with a common operand.
	* calls.c (expand_call): Mark temp slot for result as having
	address taken.

	* rtlanal.c (reg_referenced_p, case IF_THEN_ELSE): New case.

	* gcc.c (process_command): Add standard_exec_prefix with "GCC"
	component as well as "BINUTILS".

	* integrate.h (copy_rtx_and_substitute): New arg, FOR_LHS.
	* integrate.c (copy_rtx_and_substitute): Likewise.
	(expand_inline_function, integrate_parm_decls, integrate_decl_tree):
	All callers changed.
	* unroll.c (inital_reg_note_copy, copy_loop_body): Likewise.

	* dbxout.c (dbxout_type, case INTEGER_TYPE_NODE): If can use
	gdb extensions, write size of type; also be more consistent
	in using references when this is a subtype.

	* pa.md (extv, extzv, insv): Use define_expand to reject constant
	that is out of range.

	* loop.c (unknown_constant_address_altered): New variable.
	(prescan_loop): Initialize it.
	(note_addr_stored): Set it for RTX_UNCHANGING_P MEM.
	(invariant_p, case MEM): Remove handling for volatile and readony;
	check new variable if readonly.
	(check_dbra_loop): Chdeck unknown_constant_address_altered.

	* cse.c (canon_hash, case MEM): Do not record if BLKmode.
	(addr_affects_sp_p): Removed from note_mem_written and only
	define #ifdef AUTO_INC_DEC.

	* alpha.c (input_operand, case ADDRESSOF): Treat as REG.

	* regclass.c (record_reg_classes): Properly handle register move
	directions.

	* varasm.c (initializer_constant_valid_p, case MINUS_EXPR):
	Don't think valid if both operands are invalid.
	(struct constant_descriptor): New field RTL.
	(mark_const_hash_entry): Mark it.
	(record_constant{,_rtx}): Initialize it.
	(output_constant_def): Allocate RTL in permanent obstack and
	save in table.
	({record,compare}_constant_1): Modes must match for
	CONSTRUCTOR of ARRAY_TYPE.

	* c-common.h (initializer_constant_valid_p): Delete decl from here.
	* output.h (initializer_constant_valid_p): Move decl to here.
	* c-common.c (initializer_constant_valid_p): Delete function from here.
	* varasm.c (initializer_constant_valid_p): Move function to here.

	* tree.h (STRIP_SIGN_NOPS): New macro.
	* fold-const.c (optimize_minmax_comparison): New function.
	(invert_truthvalue, case WITH_RECORD_EXPR): New case.
	(fold): Use STRIP_SIGN_NOPS instead of STRIP_TYPE_NOPS.
	(fold, case EQ_EXPR): Call optimize_minmax_comparison and add
	cases with ABS_EXPR, NEGATE_EXPR, PLUS_EXPR, MINUS_EXPR, and
	widening conversions.
	(fold, case LE_EXPR): Rework changing unsigned to signed comparisons
	to look at size of mode, not precision of type; also add missing cases.
	(optimize_bit_field_compare, decode_field_reference): Don't try to
	optimize COMPONENT_REF of a PLACEHOLDER_EXPR.

	* dwarf2out.c (ctype.h): Include.
	(dwarf2out_set_demangle_name_func): New function.
	(size_of_line_info): Deleted.
	(output_line_info): Compute size of line info table from difference
	of labels.
	(base_type_die, add_name_attribute): Call demangle function, if any.
	(field_byte_offset): Use bits per word for variable length fields.
	(gen_array_type_die): Add array name.
	(gen_subprogram_die): Ignore DECL_INLINE if -fno-inline.
	(dwarf2out_add_library_unit_info): New function.

	* explow.c (set_stack_check_libfunc): New function.
	(stack_check_libfunc): New static variable.
	(probe_stack_range): Allow front-end to set up a libfunc to call.

	* combine.c (simplify_comparison): When making comparison in wider
	mode, check for having commuted an AND and a SUBREG.
	(contains_muldiv): New function.
	(try_combine): Call it when dividing a PARALLEL.
	(simplify_rtx, case TRUNCATE): Don't remove for umulsi3_highpart.
	(simplify_comparison, case ASHIFTRT): Recognize sign-extension of
	a PLUS.
	(record_value_for_reg): If TEM is a binary operation with two CLOBBERs,
	use one of the CLOBBERs instead.
	(if_then_else_cond): If comparing against zero, just return thing
	being compared.

	* optabs.c (expand_abs): If machine has MAX, ABS (x) is MAX (x, -x).
	Don't generate shifts and subtract if have conditional arithmetic.

	* rtl.h (delete_barrier): New declaration.
	* jump.c (jump_optimize): Set up to handle conditional call.
	In conditional arithmetic case, handle CALL_INSN followed by a BARRIER.
	(delete_barrier): New function.

	* rtl.c (read_rtx): Call fatal if bad RTL code; check for bad mode.

	* recog.c (nonmemory_operand): Accept ADDRESSOF.

	* tree.c (build_type_attribute_variant): Push to obstack of
	ttype around type_hash_canon call.

	* expr.c (placeholder_list): Move decl to file scope.
	(expand_expr): Don't force access to volatile just because its
	address is taken.
	If ignoring reference operations, just expand the operands.
	(expand_expr, case COMPONENT_REF): Propagate
	EXPAND_CONST_ADDRESS to recursive call when expanding inner.
	Refine test for using bitfield operations vs pointer punning.
	(expand_expr, case CONVERT_EXPR): If converting to
	BLKmode UNION_TYPE from BLKmode, just return inner object.
	Use proper mode in store_field call.
	Properly set sizes of object to store and total size in store_field
	call for convert to union.
	(expand_expr, case ARRAY_REF): If OP0 is in a register, put it in
	memory (like for ADDR_EXPR).  Also, don't put constant in register if
	we'll want it in memory.
	(readonly_fields_p): New function.
	(expand_expr, case INDIRECT_REF): Call it if LHS.
	(expand_assignment): Handle a RESULT_DECL where
	DECL_RTL is a PARALLEL.
	(do_jump, case WITH_RECORD_EXPR): New case.
	(get_inner_reference): Always go inside a CONVERT_EXPR
	and NOP_EXPR if both modes are the same.
	(store_field): Use bitfield operations if size of bitsize is not same
	as size of RHS's type.
	Check for bitpos not a multiple of alignment in BLKmode case.
	Do block move in largest possible alignment.
	(store_constructor): Set BITSIZE to -1 for variable size and properly
 	in case of array of BLKmode.
	(expand_expr_unaligned): New function.
	(do_compare_and_jump): Call it.

	* mips/iris5.h (SWITCHES_NEED_SPACES): New macro.
	* collect2.c (main): Only allow -ofoo if SWITCHES_NEED_SPACES
	does not include 'o'.

	* function.c (instantiate_virtual_regs_1, case SET): Handle case where
	both SET_DEST and SET_SRC reference a virtual register.
	(gen_mem_addressof): Copy RTX_UNCHANGING_P from new REG to old REG.

	* integrate.c (expand_inline_function): Handle case of setting
	virtual stack vars register (from built in setjmp); when parameter
	lives in memory, expand virtual_{stack_vars,incoming_args}_rtx early.
	(subst_constant): Add new parm, MEMONLY.
	(expand_inline_function, integrate_parm_decls): Pass new parm.
	(integrate_decl_tree): Likewise.
	(copy_rtx_and_substitute, case MEM): Do copy RTX_UNCHANGING_P.
	(try_constants): Call subst_constants twice, with MEMONLY 0 and 1.
	(copy_rtx_and_substitute, case SET): Add explicit calls to
	copy_rtx_and_substitute for both sides.

	* stmt.c (expand_asm_operands): Don't use TREE_STRING_LENGTH for
	constraints.
	(pushcase{,_range}): Convert to NOMINAL_TYPE after checking for
	within INDEX_TYPE, instead of before.
	(fixup_gotos): Use f->target_rtl, not the next insn,
	since latter may be from a later fixup.
	(expand_value_return): Correctly convert VAL when promoting function
	return; support RETURN_REG being a PARALLEL.
	(expand_return): When checking for result in regs and having
	cleanup, consider PARALLEL in DECL_RTL as being in regs.

From-SVN: r30299

1 files changed, 66 insertions, 22 deletions

diff --git a/gcc/dbxout.c b/gcc/dbxout.c
index af77dca..5357b02 100644
--- a/gcc/dbxout.c
+++ b/gcc/dbxout.c
@@ -1153,25 +1153,48 @@ dbxout_type (type, full, show_arg_types)
 	  dbxout_type_index (type);
 	  fprintf (asmfile, ";0;127;");
 	}
-      /* This used to check if the type's precision was more than
-	 HOST_BITS_PER_WIDE_INT.  That is wrong since gdb uses a
-	 long (it has no concept of HOST_BITS_PER_WIDE_INT).  */
-      else if (use_gnu_debug_info_extensions
-	       && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node)
-		   || TYPE_PRECISION (type) >= HOST_BITS_PER_LONG))
-	{
-	  /* This used to say `r1' and we used to take care
-	     to make sure that `int' was type number 1.  */
-	  fprintf (asmfile, "r");
-	  dbxout_type_index (integer_type_node);
-	  fprintf (asmfile, ";");
-	  print_int_cst_octal (TYPE_MIN_VALUE (type));
-	  fprintf (asmfile, ";");
-	  print_int_cst_octal (TYPE_MAX_VALUE (type));
-	  fprintf (asmfile, ";");
-	}
-      else /* Output other integer types as subranges of `int'.  */
+
+      /* If this is a subtype of another integer type, always prefer to
+	 write it as a subtype.  */
+      else if (TREE_TYPE (type) != 0
+	       && TREE_CODE (TREE_TYPE (type)) == INTEGER_CST)
 	dbxout_range_type (type);
+
+      else
+  	{
+	  /* If the size is non-standard, say what it is if we can use
+	     GDB extensions.  */
+
+	  if (use_gnu_debug_info_extensions
+	      && TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node))
+	    fprintf (asmfile, "@s%d;", TYPE_PRECISION (type));
+
+	  /* If we can use GDB extensions and the size is wider than a
+	     long (the size used by GDB to read them) or we may have
+	     trouble writing the bounds the usual way, write them in
+	     octal.  Note the test is for the *target's* size of "long",
+	     not that of the host.  The host test is just to make sure we
+	     can write it out in case the host wide int is narrower than the
+	     target "long".  */
+
+ 	  if (use_gnu_debug_info_extensions
+	      && (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node)
+		  || TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT))
+	    {
+	      fprintf (asmfile, "r");
+	      dbxout_type_index (type);
+	      fprintf (asmfile, ";");
+	      print_int_cst_octal (TYPE_MIN_VALUE (type));
+	      fprintf (asmfile, ";");
+	      print_int_cst_octal (TYPE_MAX_VALUE (type));
+	      fprintf (asmfile, ";");
+	    }
+
+	  else
+	    /* Output other integer types as subranges of `int'.  */
+	    dbxout_range_type (type);
+  	}
+
       CHARS (22);
       break;
 
@@ -2427,17 +2450,26 @@ dbxout_parms (parms)
 		 && ! CONSTANT_P (XEXP (DECL_RTL (parms), 0)))
 	  {
 	    /* Parm was passed in registers but lives on the stack.  */
+	    int aux_sym_value = 0;
 
 	    current_sym_code = N_PSYM;
 	    /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))),
 	       in which case we want the value of that CONST_INT,
 	       or (MEM (REG ...)) or (MEM (MEM ...)),
 	       in which case we use a value of zero.  */
-	    if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG
-		|| GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
+	    if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG)
 	      current_sym_value = 0;
+	    else if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM)
+	      {
+		/* Remember the location on the stack the parm is moved to */
+	        aux_sym_value
+		  = INTVAL (XEXP (XEXP (XEXP (DECL_RTL (parms), 0), 0), 1));
+	        current_sym_value = 0;
+	      }
 	    else
-	      current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
+		current_sym_value
+		  = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1));
+
 	    current_sym_addr = 0;
 
 	    /* Make a big endian correction if the mode of the type of the
@@ -2452,7 +2484,8 @@ dbxout_parms (parms)
 	    FORCE_TEXT;
 	    if (DECL_NAME (parms))
 	      {
-		current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms)));
+		current_sym_nchars
+		  = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms)));
 
 		fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
 			 IDENTIFIER_POINTER (DECL_NAME (parms)),
@@ -2470,6 +2503,17 @@ dbxout_parms (parms)
 				     XEXP (DECL_RTL (parms), 0));
 	    dbxout_type (TREE_TYPE (parms), 0, 0);
 	    dbxout_finish_symbol (parms);
+	    if (aux_sym_value != 0)
+	      {
+		/* Generate an entry for the stack location */
+
+		fprintf (asmfile, "%s \"%s:", ASM_STABS_OP,
+			 IDENTIFIER_POINTER (DECL_NAME (parms)));
+		current_sym_value = aux_sym_value;
+	        current_sym_code = N_LSYM;
+	        dbxout_type (build_reference_type (TREE_TYPE (parms)), 0, 0);
+	        dbxout_finish_symbol (parms);
+	      }
 	  }
       }
 }