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re PR debug/49846 (entryval: missing DW_TAG_GNU_call_site_parameter for stack-passed `double' parameter)

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PR debug/49846
	* var-tracking.c (prepare_call_arguments): For non-MODE_INT stack
	arguments also check if they aren't initialized with a MODE_INT
	mode of the same size.

From-SVN: r176892
This commit is contained in:
Jakub Jelinek 2011-07-28 22:35:12 +02:00 committed by Jakub Jelinek
parent 86f9864124
commit 4fe249e748
2 changed files with 23 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2011-07-28 Jakub Jelinek <jakub@redhat.com>
PR debug/49846
* var-tracking.c (prepare_call_arguments): For non-MODE_INT stack
arguments also check if they aren't initialized with a MODE_INT
mode of the same size.
2011-07-28 Aldy Hernandez <aldyh@redhat.com>
* expr.c (get_bit_range): Handle *MEM_REF's.

16
gcc/var-tracking.c
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@ -5777,6 +5777,22 @@ prepare_call_arguments (basic_block bb, rtx insn)
val = cselib_lookup (mem, GET_MODE (mem), 0, VOIDmode);
if (val && cselib_preserved_value_p (val))
item = gen_rtx_CONCAT (GET_MODE (x), copy_rtx (x), val->val_rtx);
else if (GET_MODE_CLASS (GET_MODE (mem)) != MODE_INT)
{
/* For non-integer stack argument see also if they weren't
initialized by integers. */
enum machine_mode imode = int_mode_for_mode (GET_MODE (mem));
if (imode != GET_MODE (mem) && imode != BLKmode)
{
val = cselib_lookup (adjust_address_nv (mem, imode, 0),
imode, 0, VOIDmode);
if (val && cselib_preserved_value_p (val))
item = gen_rtx_CONCAT (GET_MODE (x), copy_rtx (x),
lowpart_subreg (GET_MODE (x),
val->val_rtx,
imode));
}
}
}
if (item)
call_arguments = gen_rtx_EXPR_LIST (VOIDmode, item, call_arguments);