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sched-deps.c (set_sched_group_p): Delete.

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2004-11-15  Eric Christopher  <echristo@redhat.com>

	* sched-deps.c (set_sched_group_p): Delete.
	(delete_all_dependencies): New function.
	(fixup_sched_groups): Use. New function.
	(sched_analyze_insn): Use.

From-SVN: r90698
This commit is contained in:
Eric Christopher 2004-11-15 22:23:29 +00:00
parent 37b2f2904b
commit 4c2b2906b0
2 changed files with 68 additions and 25 deletions
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21
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2004-11-15 Eric Christopher <echristo@redhat.com>
* sched-deps.c (set_sched_group_p): Delete.
(delete_all_dependencies): New function.
(fixup_sched_groups): Use. New function.
(sched_analyze_insn): Use.
2004-11-15 Joseph S. Myers <joseph@codesourcery.com>
* c-common.c (binary_op_error): Don't allow LROTATE_EXPR,
@ -221,7 +228,7 @@
2004-11-13 Kelley Cook <kcook@gcc.gnu.org>
* doc/install.texi (automake): Correctly document that everything now
* doc/install.texi (automake): Correctly document that everything now
will use automake 1.9.3.
2004-11-13 Hans-Peter Nilsson <hp@bitrange.com>
@ -307,7 +314,7 @@
* doc/install.texi: Likewise.
* doc/makefile.texi: Likewise.
* doc/sourcebuild.texi: Likewise.
2004-11-13 Kazu Hirata <kazu@cs.umass.edu>
* tree-ssa-loop-manip.c: Fix a comment typo.
@ -352,12 +359,12 @@
2004-11-12 Devang Patel <dpatel@apple.com>
* optabs.c (vector_compare_rtx): Use COMPARISON_CLASS_P.
2004-11-12 Devang Patel <dpatel@apple.com>
* tree-if-conv.c (clean_predicate_lists): Use loop header
and latch directly.
2004-11-12 Richard Henderson <rth@redhat.com>
PR 17778
@ -377,7 +384,7 @@
* passes.c (rest_of_decl_compilation): Do not look at DECL_RTL
when deciding whether to pass a variable to
cgraph_varpool_finalize_decl or assemble_variable.
* toplev.c (check_global_declarations): Do not clear DECL_RTL.
* toplev.c (check_global_declarations): Do not clear DECL_RTL.
2004-11-12 Kazu Hirata <kazu@cs.umass.edu>
@ -420,7 +427,7 @@
2004-11-12 Sebastian Pop <pop@cri.ensmp.fr>
PR middle-end/18005
* tree-data-ref.c (estimate_niter_from_size_of_data): Ensure
* tree-data-ref.c (estimate_niter_from_size_of_data): Ensure
that arguments of EXACT_DIV_EXPR are INTEGER_CST.
2004-11-12 Steven Bosscher <stevenb@suse.de>
@ -484,7 +491,7 @@
2004-11-11 Sebastian Pop <pop@cri.ensmp.fr>
* tree-scalar-evolution.c (follow_ssa_edge_in_condition_phi):
* tree-scalar-evolution.c (follow_ssa_edge_in_condition_phi):
Give up as soon as the evolution is known not computable.
2004-11-11 Nathan Sidwell <nathan@codesourcery.com>

72
gcc/sched-deps.c
View file

@ -94,7 +94,8 @@ static bitmap_head *forward_dependency_cache;
static int deps_may_trap_p (rtx);
static void add_dependence_list (rtx, rtx, enum reg_note);
static void add_dependence_list_and_free (rtx, rtx *, enum reg_note);
static void set_sched_group_p (rtx);
static void delete_all_dependences (rtx);
static void fixup_sched_groups (rtx);
static void flush_pending_lists (struct deps *, rtx, int, int);
static void sched_analyze_1 (struct deps *, rtx, rtx);
@ -369,18 +370,54 @@ add_dependence_list_and_free (rtx insn, rtx *listp, enum reg_note dep_type)
}
}
/* Set SCHED_GROUP_P and care for the rest of the bookkeeping that
goes along with that. */
/* Clear all dependencies for an insn. */
static void
set_sched_group_p (rtx insn)
delete_all_dependences (rtx insn)
{
rtx prev;
/* Clear caches, if they exist, as well as free the dependence. */
SCHED_GROUP_P (insn) = 1;
#ifdef INSN_SCHEDULING
if (true_dependency_cache != NULL)
{
bitmap_clear (&true_dependency_cache[INSN_LUID (insn)]);
bitmap_clear (&anti_dependency_cache[INSN_LUID (insn)]);
bitmap_clear (&output_dependency_cache[INSN_LUID (insn)]);
}
#endif
prev = prev_nonnote_insn (insn);
add_dependence (insn, prev, REG_DEP_ANTI);
free_INSN_LIST_list (&LOG_LINKS (insn));
}
/* All insns in a scheduling group except the first should only have
dependencies on the previous insn in the group. So we find the
first instruction in the scheduling group by walking the dependence
chains backwards. Then we add the dependencies for the group to
the previous nonnote insn. */
static void
fixup_sched_groups (rtx insn)
{
rtx link;
for (link = LOG_LINKS (insn); link ; link = XEXP (link, 1))
{
rtx i = insn;
do
{
i = prev_nonnote_insn (i);
if (XEXP (link, 0) == i)
goto next_link;
} while (SCHED_GROUP_P (i));
add_dependence (i, XEXP (link, 0), REG_NOTE_KIND (link));
next_link:;
}
delete_all_dependences (insn);
if (BLOCK_FOR_INSN (insn) == BLOCK_FOR_INSN (prev_nonnote_insn (insn)))
add_dependence (insn, prev_nonnote_insn (insn), REG_DEP_ANTI);
}
/* Process an insn's memory dependencies. There are four kinds of
@ -643,7 +680,7 @@ sched_analyze_2 (struct deps *deps, rtx x, rtx insn)
#ifdef HAVE_cc0
case CC0:
/* User of CC0 depends on immediately preceding insn. */
set_sched_group_p (insn);
SCHED_GROUP_P (insn) = 1;
/* Don't move CC0 setter to another block (it can set up the
same flag for previous CC0 users which is safe). */
CANT_MOVE (prev_nonnote_insn (insn)) = 1;
@ -1112,7 +1149,7 @@ sched_analyze_insn (struct deps *deps, rtx x, rtx insn, rtx loop_notes)
if (deps->libcall_block_tail_insn)
{
set_sched_group_p (insn);
SCHED_GROUP_P (insn) = 1;
CANT_MOVE (insn) = 1;
}
@ -1158,15 +1195,10 @@ sched_analyze_insn (struct deps *deps, rtx x, rtx insn, rtx loop_notes)
if (src_regno < FIRST_PSEUDO_REGISTER
|| dest_regno < FIRST_PSEUDO_REGISTER)
{
/* If we are inside a post-call group right at the start of the
scheduling region, we must not add a dependency. */
if (deps->in_post_call_group_p == post_call_initial)
{
SCHED_GROUP_P (insn) = 1;
deps->in_post_call_group_p = post_call;
}
else
set_sched_group_p (insn);
deps->in_post_call_group_p = post_call;
SCHED_GROUP_P (insn) = 1;
CANT_MOVE (insn) = 1;
}
else
@ -1175,6 +1207,10 @@ sched_analyze_insn (struct deps *deps, rtx x, rtx insn, rtx loop_notes)
deps->in_post_call_group_p = not_post_call;
}
}
/* Fixup the dependencies in the sched group. */
if (SCHED_GROUP_P (insn))
fixup_sched_groups (insn);
}
/* Analyze every insn between HEAD and TAIL inclusive, creating LOG_LINKS