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sched-int.h (struct deps_reg): Add uses_length, clobbers_length. 

* sched-int.h (struct deps_reg): Add uses_length, clobbers_length.
        * sched-rgn.c (propagate_deps): Update them.
        * sched-deps.c (sched_analyze_insn): Update them.  Flush the
        clobbers list when either gets too long.

From-SVN: r49328
This commit is contained in:
Richard Henderson 2002-01-29 14:11:09 -08:00 committed by Richard Henderson
parent 3b8d200e8d
commit 2583081eb5
4 changed files with 64 additions and 15 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2002-01-29 Richard Henderson <rth@redhat.com>
* sched-int.h (struct deps_reg): Add uses_length, clobbers_length.
* sched-rgn.c (propagate_deps): Update them.
* sched-deps.c (sched_analyze_insn): Update them. Flush the
clobbers list when either gets too long.
2002-01-29 Jakub Jelinek <jakub@redhat.com>
* config/i386/i386.h (LIMIT_RELOAD_CLASS): Handle LEGACY_REGS

68
gcc/sched-deps.c
View File

@ -1058,6 +1058,8 @@ sched_analyze_insn (deps, x, insn, loop_notes)
REG_DEP_ANTI);
add_dependence_list_and_free (insn, &reg_last->sets, 0);
add_dependence_list_and_free (insn, &reg_last->clobbers, 0);
reg_last->uses_length = 0;
reg_last->clobbers_length = 0;
});
}
@ -1073,25 +1075,26 @@ sched_analyze_insn (deps, x, insn, loop_notes)
}
else
{
EXECUTE_IF_SET_IN_REG_SET (reg_pending_uses, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
add_dependence_list (insn, reg_last->sets, 0);
add_dependence_list (insn, reg_last->clobbers, 0);
reg_last->uses = alloc_INSN_LIST (insn, reg_last->uses);
});
EXECUTE_IF_SET_IN_REG_SET (reg_pending_clobbers, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
add_dependence_list (insn, reg_last->sets, REG_DEP_OUTPUT);
add_dependence_list (insn, reg_last->uses, REG_DEP_ANTI);
reg_last->clobbers = alloc_INSN_LIST (insn, reg_last->clobbers);
});
/* If the current insn is conditional, we can't free any
of the lists. */
if (GET_CODE (PATTERN (insn)) == COND_EXEC)
{
EXECUTE_IF_SET_IN_REG_SET (reg_pending_uses, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
add_dependence_list (insn, reg_last->sets, 0);
add_dependence_list (insn, reg_last->clobbers, 0);
reg_last->uses = alloc_INSN_LIST (insn, reg_last->uses);
reg_last->uses_length++;
});
EXECUTE_IF_SET_IN_REG_SET (reg_pending_clobbers, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
add_dependence_list (insn, reg_last->sets, REG_DEP_OUTPUT);
add_dependence_list (insn, reg_last->uses, REG_DEP_ANTI);
reg_last->clobbers = alloc_INSN_LIST (insn, reg_last->clobbers);
reg_last->clobbers_length++;
});
EXECUTE_IF_SET_IN_REG_SET (reg_pending_sets, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
@ -1103,6 +1106,39 @@ sched_analyze_insn (deps, x, insn, loop_notes)
}
else
{
EXECUTE_IF_SET_IN_REG_SET (reg_pending_uses, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
add_dependence_list (insn, reg_last->sets, 0);
add_dependence_list (insn, reg_last->clobbers, 0);
reg_last->uses_length++;
reg_last->uses = alloc_INSN_LIST (insn, reg_last->uses);
});
EXECUTE_IF_SET_IN_REG_SET (reg_pending_clobbers, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
add_dependence_list (insn, reg_last->sets, REG_DEP_OUTPUT);
add_dependence_list (insn, reg_last->uses, REG_DEP_ANTI);
if (reg_last->uses_length > MAX_PENDING_LIST_LENGTH
|| reg_last->clobbers_length > MAX_PENDING_LIST_LENGTH)
{
add_dependence_list_and_free (insn, &reg_last->sets,
REG_DEP_OUTPUT);
add_dependence_list_and_free (insn, &reg_last->uses,
REG_DEP_ANTI);
add_dependence_list_and_free (insn, &reg_last->clobbers,
REG_DEP_OUTPUT);
reg_last->clobbers_length = 0;
reg_last->uses_length = 0;
}
else
{
add_dependence_list (insn, reg_last->sets, REG_DEP_OUTPUT);
add_dependence_list (insn, reg_last->uses, REG_DEP_ANTI);
}
reg_last->clobbers_length++;
reg_last->clobbers = alloc_INSN_LIST (insn, reg_last->clobbers);
});
EXECUTE_IF_SET_IN_REG_SET (reg_pending_sets, 0, i,
{
struct deps_reg *reg_last = &deps->reg_last[i];
@ -1113,6 +1149,8 @@ sched_analyze_insn (deps, x, insn, loop_notes)
add_dependence_list_and_free (insn, &reg_last->uses,
REG_DEP_ANTI);
reg_last->sets = alloc_INSN_LIST (insn, reg_last->sets);
reg_last->uses_length = 0;
reg_last->clobbers_length = 0;
});
}

2
gcc/sched-int.h
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@ -96,6 +96,8 @@ struct deps
rtx uses;
rtx sets;
rtx clobbers;
int uses_length;
int clobbers_length;
} *reg_last;
/* Element N is set for each register that has any non-zero element

2
gcc/sched-rgn.c
View File

@ -2427,6 +2427,8 @@ propagate_deps (bb, pred_deps)
succ_rl->sets = concat_INSN_LIST (pred_rl->sets, succ_rl->sets);
succ_rl->clobbers = concat_INSN_LIST (pred_rl->clobbers,
succ_rl->clobbers);
succ_rl->uses_length += pred_rl->uses_length;
succ_rl->clobbers_length += pred_rl->clobbers_length;
});
IOR_REG_SET (&succ_deps->reg_last_in_use, &pred_deps->reg_last_in_use);