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dwarf2out.c (gen_subprogram_die): Handle redefinition of an extern inline function. 

* dwarf2out.c (gen_subprogram_die): Handle redefinition of an
        extern inline function.

        * dwarf2out.c (reg_loc_descriptor): Fix prototype.
        (concat_loc_descriptor): New function.
        (loc_descriptor): Call it.
        (add_AT_location_description): Also elide the descriptor if both
        halves of a CONCAT are pseudos.
        (add_location_or_const_value_attribute): Recognize CONCAT too.
Bring over from devo/fsf.

From-SVN: r15470
This commit is contained in:
Jeff Law 1997-09-15 22:39:46 -06:00
parent 33687242dc
commit 4401bf245c
2 changed files with 64 additions and 2 deletions
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14
gcc/ChangeLog
View File

@ -1,3 +1,17 @@
Mon Sep 15 22:40:55 1997 Jim Wilson (wilson@cygnus.com)
* dwarf2out.c (gen_subprogram_die): Handle redefinition of an
extern inline function.
Mon Sep 15 22:40:55 1997 Richard Henderson (rth@cygnus.com)
* dwarf2out.c (reg_loc_descriptor): Fix prototype.
(concat_loc_descriptor): New function.
(loc_descriptor): Call it.
(add_AT_location_description): Also elide the descriptor if both
halves of a CONCAT are pseudos.
(add_location_or_const_value_attribute): Recognize CONCAT too.
Mon Sep 15 15:24:00 1997 Richard Henderson <rth@cygnus.com>
* alpha.md (movdi): Handle CONST_DOUBLE for TARGET_BUILD_CONSTANTS.

52
gcc/dwarf2out.c
View File

@ -2163,10 +2163,11 @@ static tree root_type PROTO((tree));
static int is_base_type PROTO((tree));
static dw_die_ref modified_type_die PROTO((tree, int, int, dw_die_ref));
static int type_is_enum PROTO((tree));
static dw_loc_descr_ref reg_loc_descr_ref PROTO((rtx));
static dw_loc_descr_ref reg_loc_descriptor PROTO((rtx));
static dw_loc_descr_ref based_loc_descr PROTO((unsigned, long));
static int is_based_loc PROTO((rtx));
static dw_loc_descr_ref mem_loc_descriptor PROTO((rtx));
static dw_loc_descr_ref concat_loc_descriptor PROTO((rtx, rtx));
static dw_loc_descr_ref loc_descriptor PROTO((rtx));
static unsigned ceiling PROTO((unsigned, unsigned));
static tree field_type PROTO((tree));
@ -6188,6 +6189,30 @@ mem_loc_descriptor (rtl)
return mem_loc_result;
}
/* Return a descriptor that describes the concatination of two locations.
This is typically a complex variable. */
static dw_loc_descr_ref
concat_loc_descriptor (x0, x1)
register rtx x0, x1;
{
dw_loc_descr_ref cc_loc_result = NULL;
if (!is_pseudo_reg (x0)
&& (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0))))
add_loc_descr (&cc_loc_result, loc_descriptor (x0));
add_loc_descr (&cc_loc_result,
new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0));
if (!is_pseudo_reg (x1)
&& (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0))))
add_loc_descr (&cc_loc_result, loc_descriptor (x1));
add_loc_descr (&cc_loc_result,
new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0));
return cc_loc_result;
}
/* Output a proper Dwarf location descriptor for a variable or parameter
which is either allocated in a register or in a memory location. For a
register, we just generate an OP_REG and the register number. For a
@ -6219,6 +6244,10 @@ loc_descriptor (rtl)
loc_result = mem_loc_descriptor (XEXP (rtl, 0));
break;
case CONCAT:
loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1));
break;
default:
abort ();
}
@ -6426,7 +6455,10 @@ add_AT_location_description (die, attr_kind, rtl)
if (is_pseudo_reg (rtl)
|| (GET_CODE (rtl) == MEM
&& is_pseudo_reg (XEXP (rtl, 0))))
&& is_pseudo_reg (XEXP (rtl, 0)))
|| (GET_CODE (rtl) == CONCAT
&& is_pseudo_reg (XEXP (rtl, 0))
&& is_pseudo_reg (XEXP (rtl, 1))))
return;
add_AT_loc (die, attr_kind, loc_descriptor (rtl));
@ -6724,6 +6756,7 @@ add_location_or_const_value_attribute (die, decl)
case MEM:
case REG:
case SUBREG:
case CONCAT:
add_AT_location_description (die, DW_AT_location, rtl);
break;
@ -7684,6 +7717,17 @@ gen_subprogram_die (decl, context_die)
subr_die = new_die (DW_TAG_subprogram, context_die);
add_abstract_origin_attribute (subr_die, origin);
}
else if (old_die && DECL_ABSTRACT (decl)
&& get_AT_unsigned (old_die, DW_AT_inline))
{
/* This must be a redefinition of an extern inline function.
We can just reuse the old die here. */
subr_die = old_die;
/* Clear out the inlined attribute and parm types. */
remove_AT (subr_die, DW_AT_inline);
remove_children (subr_die);
}
else if (old_die)
{
register unsigned file_index
@ -7768,6 +7812,10 @@ gen_subprogram_die (decl, context_die)
}
else if (DECL_ABSTRACT (decl))
{
/* ??? Checking DECL_DEFER_OUTPUT is correct for static inline functions,
but not for extern inline functions. We can't get this completely
correct because information about whether the function was declared
inline is not saved anywhere. */
if (DECL_DEFER_OUTPUT (decl))
{
if (DECL_INLINE (decl))