Fri Nov 14 06:59:33 1997 Jeffrey A Law (law@cygnus.com)
+ * calls.c (expand_call): Handle pcc_struct_value correctly for C++.
+
* i386/xm-cygwin32.h (HAVE_FILE_H, HAVE_RUSAGE): Delete defines.
* i386/xm-mingw32.h (HAVE_FILE_H, HAVE_RUSAGE): Likewise.
* rs6000/xm-cygwin32.h (HAVE_FILE_H, HAVE_RUSAGE): Likewise.
}
else if (pcc_struct_value)
{
- if (target == 0)
- {
- /* We used leave the value in the location that it is
- returned in, but that causes problems if it is used more
- than once in one expression. Rather than trying to track
- when a copy is required, we always copy when TARGET is
- not specified. This calling sequence is only used on
- a few machines and TARGET is usually nonzero. */
- if (TYPE_MODE (TREE_TYPE (exp)) == BLKmode)
- {
- target = assign_stack_temp (BLKmode,
- int_size_in_bytes (TREE_TYPE (exp)),
- 0);
-
- MEM_IN_STRUCT_P (target) = AGGREGATE_TYPE_P (TREE_TYPE (exp));
-
- /* Save this temp slot around the pop below. */
- preserve_temp_slots (target);
- }
- else
- target = gen_reg_rtx (TYPE_MODE (TREE_TYPE (exp)));
- }
-
- if (TYPE_MODE (TREE_TYPE (exp)) != BLKmode)
- emit_move_insn (target, gen_rtx (MEM, TYPE_MODE (TREE_TYPE (exp)),
- copy_to_reg (valreg)));
- else
- emit_block_move (target, gen_rtx (MEM, BLKmode, copy_to_reg (valreg)),
- expr_size (exp),
- TYPE_ALIGN (TREE_TYPE (exp)) / BITS_PER_UNIT);
+ /* This is the special C++ case where we need to
+ know what the true target was. We take care to
+ never use this value more than once in one expression. */
+ target = gen_rtx (MEM, TYPE_MODE (TREE_TYPE (exp)),
+ copy_to_reg (valreg));
+ MEM_IN_STRUCT_P (target) = AGGREGATE_TYPE_P (TREE_TYPE (exp));
}
/* Handle calls that return values in multiple non-contiguous locations.
The Irix 6 ABI has examples of this. */