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(alter_reg): Clean up setting of RTX_UNCHANGING_P when making a MEM. 

From-SVN: r9861
This commit is contained in:
Richard Kenner 1995-05-31 21:17:28 -04:00
parent 8eae5ed6cd
commit 02db8dd0e3
1 changed files with 11 additions and 15 deletions
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26
gcc/reload1.c
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@ -2349,13 +2349,13 @@ alter_reg (i, from_reg)
/* No known place to spill from => no slot to reuse. */ /* No known place to spill from => no slot to reuse. */
x = assign_stack_local (GET_MODE (regno_reg_rtx[i]), total_size, -1); x = assign_stack_local (GET_MODE (regno_reg_rtx[i]), total_size, -1);
if (BYTES_BIG_ENDIAN) if (BYTES_BIG_ENDIAN)
{ /* Cancel the big-endian correction done in assign_stack_local.
/* Cancel the big-endian correction done in assign_stack_local. Get the address of the beginning of the slot.
Get the address of the beginning of the slot. This is so we can do a big-endian correction unconditionally
This is so we can do a big-endian correction unconditionally below. */
below. */ adjust = inherent_size - total_size;
adjust = inherent_size - total_size;
} RTX_UNCHANGING_P (x) = RTX_UNCHANGING_P (regno_reg_rtx[i]);
} }
/* Reuse a stack slot if possible. */ /* Reuse a stack slot if possible. */
else if (spill_stack_slot[from_reg] != 0 else if (spill_stack_slot[from_reg] != 0
@ -2389,14 +2389,10 @@ alter_reg (i, from_reg)
below. */ below. */
adjust = GET_MODE_SIZE (mode) - total_size; adjust = GET_MODE_SIZE (mode) - total_size;
if (adjust) if (adjust)
{ stack_slot = gen_rtx (MEM, mode_for_size (total_size
stack_slot = gen_rtx (MEM, mode_for_size (total_size * BITS_PER_UNIT,
* BITS_PER_UNIT, MODE_INT, 1),
MODE_INT, 1), plus_constant (XEXP (x, 0), adjust));
plus_constant (XEXP (x, 0), adjust));
RTX_UNCHANGING_P (stack_slot)
= RTX_UNCHANGING_P (regno_reg_rtx[i]);
}
} }
spill_stack_slot[from_reg] = stack_slot; spill_stack_slot[from_reg] = stack_slot;
spill_stack_slot_width[from_reg] = total_size; spill_stack_slot_width[from_reg] = total_size;