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lvzhengyang
riscv-gcc-1
Commits
3adde2a5
Commit
3adde2a5
authored
Aug 02, 1994
by
Richard Kenner
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(subst_prev_insn): Remove variable and all uses.
From-SVN: r7852
parent
2454c8d4
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6 additions
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18 deletions
+6
-18
gcc/combine.c
+6
-18
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gcc/combine.c
View file @
3adde2a5
...
...
@@ -170,11 +170,6 @@ static int last_call_cuid;
static
rtx
subst_insn
;
/* If nonzero, this is the insn that should be presumed to be
immediately in front of `subst_insn'. */
static
rtx
subst_prev_insn
;
/* This is the lowest CUID that `subst' is currently dealing with.
get_last_value will not return a value if the register was set at or
after this CUID. If not for this mechanism, we could get confused if
...
...
@@ -1240,7 +1235,6 @@ try_combine (i3, i2, i1)
if
(
i1
&&
INSN_CUID
(
i1
)
>
INSN_CUID
(
i2
))
temp
=
i1
,
i1
=
i2
,
i2
=
temp
;
subst_prev_insn
=
0
;
added_links_insn
=
0
;
/* First check for one important special-case that the code below will
...
...
@@ -1356,9 +1350,8 @@ try_combine (i3, i2, i1)
never appear in the insn stream so giving it the same INSN_UID
as I2 will not cause a problem. */
subst_prev_insn
=
i1
=
gen_rtx
(
INSN
,
VOIDmode
,
INSN_UID
(
i2
),
0
,
i2
,
XVECEXP
(
PATTERN
(
i2
),
0
,
1
),
-
1
,
0
,
0
);
i1
=
gen_rtx
(
INSN
,
VOIDmode
,
INSN_UID
(
i2
),
0
,
i2
,
XVECEXP
(
PATTERN
(
i2
),
0
,
1
),
-
1
,
0
,
0
);
SUBST
(
PATTERN
(
i2
),
XVECEXP
(
PATTERN
(
i2
),
0
,
0
));
SUBST
(
XEXP
(
SET_SRC
(
PATTERN
(
i2
)),
0
),
...
...
@@ -9826,15 +9819,10 @@ get_last_value (x)
{
rtx
insn
,
set
;
/* If there is an insn that is supposed to be immediately
in front of subst_insn, use it. */
if
(
subst_prev_insn
!=
0
)
insn
=
subst_prev_insn
;
else
for
(
insn
=
prev_nonnote_insn
(
subst_insn
);
insn
&&
INSN_CUID
(
insn
)
>=
subst_low_cuid
;
insn
=
prev_nonnote_insn
(
insn
))
;
for
(
insn
=
prev_nonnote_insn
(
subst_insn
);
insn
&&
INSN_CUID
(
insn
)
>=
subst_low_cuid
;
insn
=
prev_nonnote_insn
(
insn
))
;
if
(
insn
&&
(
set
=
single_set
(
insn
))
!=
0
...
...
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