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* [gcc r12-2732] by_pieces: Pass MAX_PIECES to op_by_pieces_d
@ 2021-08-04 13:25 H.J. Lu
0 siblings, 0 replies; only message in thread
From: H.J. Lu @ 2021-08-04 13:25 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:f2e5d2717d9e249edc5e0d45e49e4f9ef81fc694
commit r12-2732-gf2e5d2717d9e249edc5e0d45e49e4f9ef81fc694
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Aug 3 06:17:22 2021 -0700
by_pieces: Pass MAX_PIECES to op_by_pieces_d
Pass MAX_PIECES to op_by_pieces_d::op_by_pieces_d for move, store and
compare.
PR target/101742
* expr.c (op_by_pieces_d::op_by_pieces_d): Add a max_pieces
argument to set m_max_size.
(move_by_pieces_d): Pass MOVE_MAX_PIECES to op_by_pieces_d.
(store_by_pieces_d): Pass STORE_MAX_PIECES to op_by_pieces_d.
(compare_by_pieces_d): Pass COMPARE_MAX_PIECES to op_by_pieces_d.
Diff:
---
gcc/expr.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/gcc/expr.c b/gcc/expr.c
index b65cfcfdcd1..096c0315ecc 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -1110,8 +1110,8 @@ class op_by_pieces_d
}
public:
- op_by_pieces_d (rtx, bool, rtx, bool, by_pieces_constfn, void *,
- unsigned HOST_WIDE_INT, unsigned int, bool,
+ op_by_pieces_d (unsigned int, rtx, bool, rtx, bool, by_pieces_constfn,
+ void *, unsigned HOST_WIDE_INT, unsigned int, bool,
bool = false);
void run ();
};
@@ -1120,10 +1120,12 @@ class op_by_pieces_d
objects named TO and FROM, which are identified as loads or stores
by TO_LOAD and FROM_LOAD. If FROM is a load, the optional FROM_CFN
and its associated FROM_CFN_DATA can be used to replace loads with
- constant values. LEN describes the length of the operation. */
+ constant values. MAX_PIECES describes the maximum number of bytes
+ at a time which can be moved efficiently. LEN describes the length
+ of the operation. */
-op_by_pieces_d::op_by_pieces_d (rtx to, bool to_load,
- rtx from, bool from_load,
+op_by_pieces_d::op_by_pieces_d (unsigned int max_pieces, rtx to,
+ bool to_load, rtx from, bool from_load,
by_pieces_constfn from_cfn,
void *from_cfn_data,
unsigned HOST_WIDE_INT len,
@@ -1131,7 +1133,7 @@ op_by_pieces_d::op_by_pieces_d (rtx to, bool to_load,
bool qi_vector_mode)
: m_to (to, to_load, NULL, NULL),
m_from (from, from_load, from_cfn, from_cfn_data),
- m_len (len), m_max_size (MOVE_MAX_PIECES + 1),
+ m_len (len), m_max_size (max_pieces + 1),
m_push (push), m_qi_vector_mode (qi_vector_mode)
{
int toi = m_to.get_addr_inc ();
@@ -1324,8 +1326,8 @@ class move_by_pieces_d : public op_by_pieces_d
public:
move_by_pieces_d (rtx to, rtx from, unsigned HOST_WIDE_INT len,
unsigned int align)
- : op_by_pieces_d (to, false, from, true, NULL, NULL, len, align,
- PUSHG_P (to))
+ : op_by_pieces_d (MOVE_MAX_PIECES, to, false, from, true, NULL,
+ NULL, len, align, PUSHG_P (to))
{
}
rtx finish_retmode (memop_ret);
@@ -1421,8 +1423,8 @@ class store_by_pieces_d : public op_by_pieces_d
store_by_pieces_d (rtx to, by_pieces_constfn cfn, void *cfn_data,
unsigned HOST_WIDE_INT len, unsigned int align,
bool qi_vector_mode)
- : op_by_pieces_d (to, false, NULL_RTX, true, cfn, cfn_data, len,
- align, false, qi_vector_mode)
+ : op_by_pieces_d (STORE_MAX_PIECES, to, false, NULL_RTX, true, cfn,
+ cfn_data, len, align, false, qi_vector_mode)
{
}
rtx finish_retmode (memop_ret);
@@ -1618,8 +1620,8 @@ class compare_by_pieces_d : public op_by_pieces_d
compare_by_pieces_d (rtx op0, rtx op1, by_pieces_constfn op1_cfn,
void *op1_cfn_data, HOST_WIDE_INT len, int align,
rtx_code_label *fail_label)
- : op_by_pieces_d (op0, true, op1, true, op1_cfn, op1_cfn_data, len,
- align, false)
+ : op_by_pieces_d (COMPARE_MAX_PIECES, op0, true, op1, true, op1_cfn,
+ op1_cfn_data, len, align, false)
{
m_fail_label = fail_label;
}
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