mirror of
https://forge.sourceware.org/marek/gcc.git
synced 2026-02-22 03:47:02 -05:00
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/* Avoid store forwarding optimization pass.
|
|
Copyright (C) 2024-2026 Free Software Foundation, Inc.
|
|
Contributed by VRULL GmbH.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
GCC is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GCC; see the file COPYING3. If not see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef GCC_AVOID_STORE_FORWARDING_H
|
|
#define GCC_AVOID_STORE_FORWARDING_H
|
|
|
|
#include "config.h"
|
|
#include "system.h"
|
|
#include "coretypes.h"
|
|
#include "backend.h"
|
|
#include "rtl.h"
|
|
|
|
struct store_fwd_info
|
|
{
|
|
/* The store instruction that is a store forwarding candidate. */
|
|
rtx_insn *store_insn;
|
|
/* SET_DEST (single_set (store_insn)). */
|
|
rtx store_mem;
|
|
/* The temporary that will hold the stored value at the original store
|
|
position. */
|
|
rtx mov_reg;
|
|
/* The instruction sequence that inserts the stored value's bits at the
|
|
appropriate position in the loaded value. */
|
|
rtx_insn *bits_insert_insns;
|
|
/* An instruction that saves the store's value in a register temporarily,
|
|
(set (reg X) (SET_SRC (store_insn))). */
|
|
rtx_insn *save_store_value_insn;
|
|
/* An instruction that stores the saved value back to memory,
|
|
(set (SET_DEST (store_insn)) (reg X)). */
|
|
rtx_insn *store_saved_value_insn;
|
|
/* The byte offset for the store's position within the load. */
|
|
HOST_WIDE_INT offset;
|
|
|
|
unsigned int insn_cnt;
|
|
bool remove;
|
|
bool forwarded;
|
|
};
|
|
|
|
#endif /* GCC_AVOID_STORE_FORWARDING_H */
|