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rtl.h (SCHED_GROUP_P): Disallow CODE_LABEL, BARRIER and NOTE.

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2002-06-14  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	* rtl.h (SCHED_GROUP_P): Disallow CODE_LABEL, BARRIER and NOTE.
	* sched-deps.c (add_dependence): Likewise.
	(group_leader): Likewise.
	* sched-rgn.c (init_ready_list): Likewise.
	* doc/rtl.texi: Adjust accordingly.

From-SVN: r54622
This commit is contained in:
Franz Sirl 2002-06-14 18:58:10 +00:00 • committed by Franz Sirl
parent 6203ef88a6
commit be202ec201
5 changed files with 25 additions and 23 deletions
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8
gcc/ChangeLog
View file

@ -1,3 +1,11 @@
2002-06-14 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
* rtl.h (SCHED_GROUP_P): Disallow CODE_LABEL, BARRIER and NOTE.
* sched-deps.c (add_dependence): Likewise.
(group_leader): Likewise.
* sched-rgn.c (init_ready_list): Likewise.
* doc/rtl.texi: Adjust accordingly.
2002-06-13 Jeffrey Law <law@redhat.com>
* gcse.c (delete_null_pointer_checks_1): Inform caller if any

16
gcc/doc/rtl.texi
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@ -614,17 +614,13 @@ anywhere. This does not mean that it is function invariant.
Stored in the @code{unchanging} field and printed as @samp{/u}.
@findex SCHED_GROUP_P
@cindex @code{insn} and @samp{/i}
@cindex @code{call_insn} and @samp{/i}
@cindex @code{jump_insn} and @samp{/i}
@cindex @code{code_label} and @samp{/i}
@cindex @code{barrier} and @samp{/i}
@cindex @code{note} and @samp{/i}
@cindex @code{in_struct}, in @code{insn}, @code{jump_insn}, @code{call_insn}, @code{code_label}, @code{barrier}, and @code{note}
@cindex @code{insn} and @samp{/s}
@cindex @code{call_insn} and @samp{/s}
@cindex @code{jump_insn} and @samp{/s}
@cindex @code{in_struct}, in @code{insn}, @code{jump_insn} and @code{call_insn}
@item SCHED_GROUP_P (@var{x})
During instruction scheduling, in an @code{insn}, @code{call_insn},
@code{jump_insn}, @code{code_label}, @code{barrier}, or
@code{note}, indicates that the
During instruction scheduling, in an @code{insn}, @code{call_insn} or
@code{jump_insn}, indicates that the
previous insn must be scheduled together with this insn. This is used to
ensure that certain groups of instructions will not be split up by the
instruction scheduling pass, for example, @code{use} insns before

9
gcc/rtl.h
View file

@ -161,9 +161,8 @@ struct rtx_def
and must not be deleted even if its count is zero.
1 in a LABEL_REF if this is a reference to a label outside the
current loop.
1 in an INSN, JUMP_INSN, CALL_INSN, CODE_LABEL, BARRIER, or NOTE if
this insn must be scheduled together with the preceding insn. Valid
only within sched.
1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
together with the preceding insn. Valid only within sched.
1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
from the target of a branch. Valid from reorg until end of compilation;
cleared before used.
@ -1118,8 +1117,8 @@ do { \
/* During sched, 1 if RTX is an insn that must be scheduled together
with the preceding insn. */
#define SCHED_GROUP_P(RTX) \
(RTL_FLAG_CHECK6("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN, \
CODE_LABEL, BARRIER, NOTE)->in_struct)
(RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \
)->in_struct)
/* For a SET rtx, SET_DEST is the place that is set
and SET_SRC is the value it is set to. */

9
gcc/sched-deps.c
View file

@ -222,8 +222,7 @@ add_dependence (insn, elem, dep_type)
setters of the condition codes, so we must skip past notes here.
Otherwise, NOTEs are impossible here. */
next = next_nonnote_insn (elem);
if (next && SCHED_GROUP_P (next)
&& GET_CODE (next) != CODE_LABEL)
if (next && INSN_P (next) && SCHED_GROUP_P (next))
{
/* Notes will never intervene here though, so don't bother checking
for them. */
@ -235,8 +234,8 @@ add_dependence (insn, elem, dep_type)
rtx nnext;
while ((nnext = next_nonnote_insn (next)) != NULL
&& SCHED_GROUP_P (nnext)
&& GET_CODE (nnext) != CODE_LABEL)
&& INSN_P (nnext)
&& SCHED_GROUP_P (nnext))
next = nnext;
/* Again, don't depend an insn on itself. */
@ -448,7 +447,7 @@ group_leader (insn)
prev = insn;
insn = next_nonnote_insn (insn);
}
while (insn && SCHED_GROUP_P (insn) && (GET_CODE (insn) != CODE_LABEL));
while (insn && INSN_P (insn) && SCHED_GROUP_P (insn));
return prev;
}

6
gcc/sched-rgn.c
View file

@ -2033,7 +2033,7 @@ init_ready_list (ready)
next = NEXT_INSN (insn);
if (INSN_DEP_COUNT (insn) == 0
&& (SCHED_GROUP_P (next) == 0 || ! INSN_P (next)))
&& (! INSN_P (next) || SCHED_GROUP_P (next) == 0))
ready_add (ready, insn);
if (!(SCHED_GROUP_P (insn)))
target_n_insns++;
@ -2079,8 +2079,8 @@ init_ready_list (ready)
next = next_nonnote_insn (insn);
if (INSN_DEP_COUNT (insn) == 0
&& (! next
|| SCHED_GROUP_P (next) == 0
|| ! INSN_P (next)))
|| ! INSN_P (next)
|| SCHED_GROUP_P (next) == 0))
ready_add (ready, insn);
}
}