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integrate.c (expand_inline_function): Recognize (mem (addressof)) and substitute. 

* integrate.c (expand_inline_function): Recognize (mem (addressof))
        and substitute.  Copy the return value from there into a new pseudo.

From-SVN: r24658
This commit is contained in:
Richard Henderson 1999-01-13 12:13:27 -08:00 committed by Richard Henderson
parent 9b4f2bb714
commit 58a2f534ee
2 changed files with 51 additions and 31 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Wed Jan 13 20:12:37 1999 Richard Henderson <rth@cygnus.com>
* integrate.c (expand_inline_function): Recognize (mem (addressof))
and substitute. Copy the return value from there into a new pseudo.
Thu Jan 14 13:52:42 1999 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* config/c4x/c4x.md (in_annul_slot_3): Correctly allow unarycc

77
gcc/integrate.c
View File

@ -1709,46 +1709,61 @@ expand_inline_function (fndecl, parms, target, ignore, type,
map->inline_target = 0;
loc = DECL_RTL (DECL_RESULT (fndecl));
if (TYPE_MODE (type) == VOIDmode)
/* There is no return value to worry about. */
;
else if (GET_CODE (loc) == MEM)
{
if (! structure_value_addr || ! aggregate_value_p (DECL_RESULT (fndecl)))
abort ();
/* Pass the function the address in which to return a structure value.
Note that a constructor can cause someone to call us with
STRUCTURE_VALUE_ADDR, but the initialization takes place
via the first parameter, rather than the struct return address.
We have two cases: If the address is a simple register indirect,
use the mapping mechanism to point that register to our structure
return address. Otherwise, store the structure return value into
the place that it will be referenced from. */
if (GET_CODE (XEXP (loc, 0)) == REG)
{
temp = force_reg (Pmode,
force_operand (structure_value_addr, NULL_RTX));
map->reg_map[REGNO (XEXP (loc, 0))] = temp;
if ((CONSTANT_P (structure_value_addr)
|| GET_CODE (structure_value_addr) == ADDRESSOF
|| (GET_CODE (structure_value_addr) == PLUS
&& XEXP (structure_value_addr, 0) == virtual_stack_vars_rtx
&& GET_CODE (XEXP (structure_value_addr, 1)) == CONST_INT))
&& REGNO (temp) < map->const_equiv_map_size)
{
map->const_equiv_map[REGNO (temp)] = structure_value_addr;
map->const_age_map[REGNO (temp)] = CONST_AGE_PARM;
}
}
else
if (GET_CODE (XEXP (loc, 0)) == ADDRESSOF)
{
temp = copy_rtx_and_substitute (loc, map);
subst_constants (&temp, NULL_RTX, map);
apply_change_group ();
emit_move_insn (temp, structure_value_addr);
target = temp;
}
else
{
if (! structure_value_addr
|| ! aggregate_value_p (DECL_RESULT (fndecl)))
abort ();
/* Pass the function the address in which to return a structure
value. Note that a constructor can cause someone to call us
with STRUCTURE_VALUE_ADDR, but the initialization takes place
via the first parameter, rather than the struct return address.
We have two cases: If the address is a simple register
indirect, use the mapping mechanism to point that register to
our structure return address. Otherwise, store the structure
return value into the place that it will be referenced from. */
if (GET_CODE (XEXP (loc, 0)) == REG)
{
temp = force_operand (structure_value_addr, NULL_RTX);
temp = force_reg (Pmode, temp);
map->reg_map[REGNO (XEXP (loc, 0))] = temp;
if ((CONSTANT_P (structure_value_addr)
|| GET_CODE (structure_value_addr) == ADDRESSOF
|| (GET_CODE (structure_value_addr) == PLUS
&& (XEXP (structure_value_addr, 0)
== virtual_stack_vars_rtx)
&& (GET_CODE (XEXP (structure_value_addr, 1))
== CONST_INT)))
&& REGNO (temp) < map->const_equiv_map_size)
{
map->const_equiv_map[REGNO (temp)] = structure_value_addr;
map->const_age_map[REGNO (temp)] = CONST_AGE_PARM;
}
}
else
{
temp = copy_rtx_and_substitute (loc, map);
subst_constants (&temp, NULL_RTX, map);
apply_change_group ();
emit_move_insn (temp, structure_value_addr);
}
}
}
else if (ignore)