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reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed by assign_stack_local on the IRA...

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* reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed
	by assign_stack_local on the IRA path for stack slot sharing as well
	as the non-IRA path.

From-SVN: r140295
This commit is contained in:
Jeff Law 2008-09-11 11:17:57 -06:00 committed by Jeff Law
parent 4ae8027b18
commit 13d7e8af69
2 changed files with 17 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-09-11 Jeff Law <law@redhat.com>
* reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed
by assign_stack_local on the IRA path for stack slot sharing
as well as the non-IRA path.
2008-09-11 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.h: Fix whitespace issues.

12
gcc/reload1.c
View File

@ -2176,18 +2176,28 @@ alter_reg (int i, int from_reg, bool dont_share_p)
inherent space, and no less total space, then the previous slot. */
else if (from_reg == -1 || (! dont_share_p && flag_ira && optimize))
{
rtx stack_slot;
alias_set_type alias_set = new_alias_set ();
/* No known place to spill from => no slot to reuse. */
x = assign_stack_local (mode, total_size,
min_align > inherent_align
|| total_size > inherent_size ? -1 : 0);
stack_slot = x;
if (BYTES_BIG_ENDIAN)
/* Cancel the big-endian correction done in assign_stack_local.
Get the address of the beginning of the slot.
This is so we can do a big-endian correction unconditionally
below. */
adjust = inherent_size - total_size;
if (adjust)
stack_slot
= adjust_address_nv (x, mode_for_size (total_size
* BITS_PER_UNIT,
MODE_INT, 1),
adjust);
/* Nothing can alias this slot except this pseudo. */
set_mem_alias_set (x, alias_set);
@ -2195,7 +2205,7 @@ alter_reg (int i, int from_reg, bool dont_share_p)
if (! dont_share_p && flag_ira && optimize)
/* Inform IRA about allocation a new stack slot. */
ira_mark_new_stack_slot (x, i, total_size);
ira_mark_new_stack_slot (stack_slot, i, total_size);
}
/* Reuse a stack slot if possible. */