/* Building internal representation for IRA.
- Copyright (C) 2006-2015 Free Software Foundation, Inc.
+ Copyright (C) 2006-2020 Free Software Foundation, Inc.
Contributed by Vladimir Makarov <vmakarov@redhat.com>.
This file is part of GCC.
#include "config.h"
#include "system.h"
#include "coretypes.h"
-#include "tm.h"
-#include "rtl.h"
-#include "tm_p.h"
+#include "backend.h"
#include "target.h"
-#include "regs.h"
-#include "flags.h"
-#include "hard-reg-set.h"
+#include "rtl.h"
#include "predict.h"
-#include "input.h"
-#include "function.h"
-#include "dominance.h"
-#include "cfg.h"
-#include "basic-block.h"
-#include "insn-config.h"
-#include "recog.h"
-#include "diagnostic-core.h"
-#include "params.h"
#include "df.h"
-#include "reload.h"
-#include "sparseset.h"
+#include "insn-config.h"
+#include "regs.h"
+#include "memmodel.h"
+#include "ira.h"
#include "ira-int.h"
-#include "emit-rtl.h" /* FIXME: Can go away once crtl is moved to rtl.h. */
+#include "sparseset.h"
+#include "cfgloop.h"
static ira_copy_t find_allocno_copy (ira_allocno_t, ira_allocno_t, rtx_insn *,
ira_loop_tree_node_t);
int ira_loop_tree_height;
/* All nodes representing basic blocks are referred through the
- following array. We can not use basic block member `aux' for this
+ following array. We cannot use basic block member `aux' for this
because it is used for insertion of insns on edges. */
ira_loop_tree_node_t ira_bb_nodes;
loop designating the whole function when CFG loops are not
built. */
static void
-add_loop_to_tree (struct loop *loop)
+add_loop_to_tree (class loop *loop)
{
int loop_num;
- struct loop *parent;
+ class loop *parent;
ira_loop_tree_node_t loop_node, parent_node;
- /* We can not use loop node access macros here because of potential
+ /* We cannot use loop node access macros here because of potential
checking and because the nodes are not initialized enough
yet. */
if (loop != NULL && loop_outer (loop) != NULL)
form_loop_tree (void)
{
basic_block bb;
- struct loop *parent;
+ class loop *parent;
ira_loop_tree_node_t bb_node, loop_node;
- /* We can not use loop/bb node access macros because of potential
+ /* We cannot use loop/bb node access macros because of potential
checking and because the nodes are not initialized enough
yet. */
FOR_EACH_BB_FN (bb, cfun)
\f
/* Pools for allocnos, allocno live ranges and objects. */
-static pool_allocator<live_range> live_range_pool ("live ranges", 100);
-static pool_allocator<ira_allocno> allocno_pool ("allocnos", 100);
-static pool_allocator<ira_object> object_pool ("objects", 100);
+static object_allocator<live_range> live_range_pool ("live ranges");
+static object_allocator<ira_allocno> allocno_pool ("allocnos");
+static object_allocator<ira_object> object_pool ("objects");
/* Vec containing references to all created allocnos. It is a
container of array allocnos. */
OBJECT_CONFLICT_VEC_P (obj) = false;
OBJECT_CONFLICT_ARRAY (obj) = NULL;
OBJECT_NUM_CONFLICTS (obj) = 0;
- COPY_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj), ira_no_alloc_regs);
- COPY_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj), ira_no_alloc_regs);
- IOR_COMPL_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj),
- reg_class_contents[aclass]);
- IOR_COMPL_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
- reg_class_contents[aclass]);
+ OBJECT_CONFLICT_HARD_REGS (obj) = ira_no_alloc_regs;
+ OBJECT_TOTAL_CONFLICT_HARD_REGS (obj) = ira_no_alloc_regs;
+ OBJECT_CONFLICT_HARD_REGS (obj) |= ~reg_class_contents[aclass];
+ OBJECT_TOTAL_CONFLICT_HARD_REGS (obj) |= ~reg_class_contents[aclass];
OBJECT_MIN (obj) = INT_MAX;
OBJECT_MAX (obj) = -1;
OBJECT_LIVE_RANGES (obj) = NULL;
ALLOCNO_CALL_FREQ (a) = 0;
ALLOCNO_CALLS_CROSSED_NUM (a) = 0;
ALLOCNO_CHEAP_CALLS_CROSSED_NUM (a) = 0;
+ ALLOCNO_CROSSED_CALLS_ABIS (a) = 0;
CLEAR_HARD_REG_SET (ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a));
#ifdef STACK_REGS
ALLOCNO_NO_STACK_REG_P (a) = false;
ALLOCNO_CLASS (a) = aclass;
FOR_EACH_ALLOCNO_OBJECT (a, obj, oi)
{
- IOR_COMPL_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj),
- reg_class_contents[aclass]);
- IOR_COMPL_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
- reg_class_contents[aclass]);
+ OBJECT_CONFLICT_HARD_REGS (obj) |= ~reg_class_contents[aclass];
+ OBJECT_TOTAL_CONFLICT_HARD_REGS (obj) |= ~reg_class_contents[aclass];
}
}
int n = ira_reg_class_max_nregs[aclass][mode];
int i;
- if (GET_MODE_SIZE (mode) != 2 * UNITS_PER_WORD || n != 2)
+ if (n != 2 || maybe_ne (GET_MODE_SIZE (mode), n * UNITS_PER_WORD))
n = 1;
ALLOCNO_NUM_OBJECTS (a) = n;
ira_object_t to_obj = ALLOCNO_OBJECT (to, i);
if (!total_only)
- IOR_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (to_obj),
- OBJECT_CONFLICT_HARD_REGS (from_obj));
- IOR_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (to_obj),
- OBJECT_TOTAL_CONFLICT_HARD_REGS (from_obj));
+ OBJECT_CONFLICT_HARD_REGS (to_obj)
+ |= OBJECT_CONFLICT_HARD_REGS (from_obj);
+ OBJECT_TOTAL_CONFLICT_HARD_REGS (to_obj)
+ |= OBJECT_TOTAL_CONFLICT_HARD_REGS (from_obj);
}
#ifdef STACK_REGS
if (!total_only && ALLOCNO_NO_STACK_REG_P (from))
/* Update hard register conflict information for all objects associated with
A to include the regs in SET. */
void
-ior_hard_reg_conflicts (ira_allocno_t a, HARD_REG_SET *set)
+ior_hard_reg_conflicts (ira_allocno_t a, const_hard_reg_set set)
{
ira_allocno_object_iterator i;
ira_object_t obj;
FOR_EACH_ALLOCNO_OBJECT (a, obj, i)
{
- IOR_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj), *set);
- IOR_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj), *set);
+ OBJECT_CONFLICT_HARD_REGS (obj) |= set;
+ OBJECT_TOTAL_CONFLICT_HARD_REGS (obj) |= set;
}
}
ALLOCNO_CALLS_CROSSED_NUM (cap) = ALLOCNO_CALLS_CROSSED_NUM (a);
ALLOCNO_CHEAP_CALLS_CROSSED_NUM (cap) = ALLOCNO_CHEAP_CALLS_CROSSED_NUM (a);
- IOR_HARD_REG_SET (ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (cap),
- ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a));
+ ALLOCNO_CROSSED_CALLS_ABIS (cap) = ALLOCNO_CROSSED_CALLS_ABIS (a);
+ ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (cap)
+ = ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a);
if (internal_flag_ira_verbose > 2 && ira_dump_file != NULL)
{
fprintf (ira_dump_file, " Creating cap ");
\f
/* Pools for allocno preferences. */
-static pool_allocator <ira_allocno_pref> pref_pool ("prefs", 100);
+static object_allocator <ira_allocno_pref> pref_pool ("prefs");
/* Vec containing references to all created preferences. It is a
container of array ira_prefs. */
\f
/* Pools for copies. */
-static pool_allocator<ira_allocno_copy> copy_pool ("copies", 100);
+static object_allocator<ira_allocno_copy> copy_pool ("copies");
/* Vec containing references to all created copies. It is a
container of array ira_copies. */
\f
/* Pools for cost vectors. It is defined only for allocno classes. */
-static pool_allocator<int> * cost_vector_pool[N_REG_CLASSES];
+static pool_allocator *cost_vector_pool[N_REG_CLASSES];
/* The function initiates work with hard register cost vectors. It
creates allocation pool for each allocno class. */
for (i = 0; i < ira_allocno_classes_num; i++)
{
aclass = ira_allocno_classes[i];
- cost_vector_pool[aclass] = new pool_allocator<int>
- ("cost vectors", 100,
- sizeof (int) * (ira_class_hard_regs_num[aclass] - 1));
+ cost_vector_pool[aclass] = new pool_allocator
+ ("cost vectors", sizeof (int) * (ira_class_hard_regs_num[aclass]));
}
}
int *
ira_allocate_cost_vector (reg_class_t aclass)
{
- return cost_vector_pool[(int) aclass]->allocate ();
+ return (int*) cost_vector_pool[(int) aclass]->allocate ();
}
/* Free a cost vector VEC for ACLASS. */
minimizes the number of chain elements per allocno live range. If the
blocks would be visited in a different order, we would still compute a
correct post-ordering but it would be less likely that two nodes
- connected by an edge in the CFG are neighbours in the topsort. */
+ connected by an edge in the CFG are neighbors in the topsort. */
static vec<ira_loop_tree_node_t>
ira_loop_tree_body_rev_postorder (ira_loop_tree_node_t loop_node ATTRIBUTE_UNUSED,
if (outer != NULL && GET_CODE (outer) == SUBREG)
{
machine_mode wmode = GET_MODE (outer);
- if (GET_MODE_SIZE (wmode) > GET_MODE_SIZE (ALLOCNO_WMODE (a)))
+ if (partial_subreg_p (ALLOCNO_WMODE (a), wmode))
ALLOCNO_WMODE (a) = wmode;
}
}
+= ALLOCNO_CALLS_CROSSED_NUM (a);
ALLOCNO_CHEAP_CALLS_CROSSED_NUM (parent_a)
+= ALLOCNO_CHEAP_CALLS_CROSSED_NUM (a);
- IOR_HARD_REG_SET (ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (parent_a),
- ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a));
+ ALLOCNO_CROSSED_CALLS_ABIS (parent_a)
+ |= ALLOCNO_CROSSED_CALLS_ABIS (a);
+ ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (parent_a)
+ |= ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a);
ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (parent_a)
+= ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (a);
aclass = ALLOCNO_CLASS (a);
#ifdef STACK_REGS
/* Return TRUE if LOOP has a complex enter or exit edge. We don't
form a region from such loop if the target use stack register
- because reg-stack.c can not deal with such edges. */
+ because reg-stack.c cannot deal with such edges. */
static bool
-loop_with_complex_edge_p (struct loop *loop)
+loop_with_complex_edge_p (class loop *loop)
{
int i;
edge_iterator ei;
return -1;
if (! l1->to_remove_p && l2->to_remove_p)
return 1;
- if ((diff = l1->loop->header->frequency - l2->loop->header->frequency) != 0)
+ if ((diff = l1->loop->header->count.to_frequency (cfun)
+ - l2->loop->header->count.to_frequency (cfun)) != 0)
return diff;
if ((diff = (int) loop_depth (l1->loop) - (int) loop_depth (l2->loop)) != 0)
return diff;
hardly helps (for irregular register file architecture it could
help by choosing a better hard register in the loop but we prefer
faster allocation even in this case). We also remove cheap loops
- if there are more than IRA_MAX_LOOPS_NUM of them. Loop with EH
+ if there are more than param_ira_max_loops_num of them. Loop with EH
exit or enter edges are removed too because the allocation might
require put pseudo moves on the EH edges (we could still do this
for pseudos with caller saved hard registers in some cases but it
);
}
qsort (sorted_loops, n, sizeof (ira_loop_tree_node_t), loop_compare_func);
- for (i = 0; n - i + 1 > IRA_MAX_LOOPS_NUM; i++)
+ for (i = 0; i < n - param_ira_max_loops_num; i++)
{
sorted_loops[i]->to_remove_p = true;
if (internal_flag_ira_verbose > 1 && ira_dump_file != NULL)
(ira_dump_file,
" Mark loop %d (header %d, freq %d, depth %d) for removal (%s)\n",
sorted_loops[i]->loop_num, sorted_loops[i]->loop->header->index,
- sorted_loops[i]->loop->header->frequency,
+ sorted_loops[i]->loop->header->count.to_frequency (cfun),
loop_depth (sorted_loops[i]->loop),
low_pressure_loop_node_p (sorted_loops[i]->parent)
&& low_pressure_loop_node_p (sorted_loops[i])
" Mark loop %d (header %d, freq %d, depth %d) for removal\n",
ira_loop_nodes[i].loop_num,
ira_loop_nodes[i].loop->header->index,
- ira_loop_nodes[i].loop->header->frequency,
+ ira_loop_nodes[i].loop->header->count.to_frequency (cfun),
loop_depth (ira_loop_nodes[i].loop));
}
}
ALLOCNO_CALLS_CROSSED_NUM (a) += ALLOCNO_CALLS_CROSSED_NUM (from_a);
ALLOCNO_CHEAP_CALLS_CROSSED_NUM (a)
+= ALLOCNO_CHEAP_CALLS_CROSSED_NUM (from_a);
- IOR_HARD_REG_SET (ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a),
- ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (from_a));
+ ALLOCNO_CROSSED_CALLS_ABIS (a) |= ALLOCNO_CROSSED_CALLS_ABIS (from_a);
+ ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a)
+ |= ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (from_a);
ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (a)
+= ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (from_a);
ALLOCNO_NEXT_REGNO_ALLOCNO (a) = NULL;
ALLOCNO_CAP_MEMBER (a) = NULL;
FOR_EACH_ALLOCNO_OBJECT (a, obj, oi)
- COPY_HARD_REG_SET (OBJECT_CONFLICT_HARD_REGS (obj),
- OBJECT_TOTAL_CONFLICT_HARD_REGS (obj));
+ OBJECT_CONFLICT_HARD_REGS (obj)
+ = OBJECT_TOTAL_CONFLICT_HARD_REGS (obj);
#ifdef STACK_REGS
if (ALLOCNO_TOTAL_NO_STACK_REG_P (a))
ALLOCNO_NO_STACK_REG_P (a) = true;
/* At this point true value of allocno attribute bad_spill_p means
that there is an insn where allocno occurs and where the allocno
- can not be used as memory. The function updates the attribute, now
- it can be true only for allocnos which can not be used as memory in
+ cannot be used as memory. The function updates the attribute, now
+ it can be true only for allocnos which cannot be used as memory in
an insn and in whose live ranges there is other allocno deaths.
Spilling allocnos with true value will not improve the code because
it will not make other allocnos colorable and additional reloads
ira_object_t parent_obj;
if (OBJECT_MAX (obj) < 0)
- continue;
+ {
+ /* The object is not used and hence does not live. */
+ ira_assert (OBJECT_LIVE_RANGES (obj) == NULL);
+ OBJECT_MAX (obj) = 0;
+ OBJECT_MIN (obj) = 1;
+ continue;
+ }
ira_assert (ALLOCNO_CAP_MEMBER (a) == NULL);
/* Accumulation of range info. */
if (ALLOCNO_CAP (a) != NULL)
#ifdef ENABLE_IRA_CHECKING
FOR_EACH_OBJECT (obj, oi)
{
- if ((0 <= OBJECT_MIN (obj) && OBJECT_MIN (obj) <= ira_max_point)
- && (0 <= OBJECT_MAX (obj) && OBJECT_MAX (obj) <= ira_max_point))
+ if ((OBJECT_MIN (obj) >= 0 && OBJECT_MIN (obj) <= ira_max_point)
+ && (OBJECT_MAX (obj) >= 0 && OBJECT_MAX (obj) <= ira_max_point))
continue;
gcc_unreachable ();
}
+= ALLOCNO_CALLS_CROSSED_NUM (a);
ALLOCNO_CHEAP_CALLS_CROSSED_NUM (parent_a)
+= ALLOCNO_CHEAP_CALLS_CROSSED_NUM (a);
- IOR_HARD_REG_SET (ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (parent_a),
- ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a));
+ ALLOCNO_CROSSED_CALLS_ABIS (parent_a)
+ |= ALLOCNO_CROSSED_CALLS_ABIS (a);
+ ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (parent_a)
+ |= ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS (a);
ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (parent_a)
+= ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (a);
merged_p = true;
flattening. */
continue;
FOR_EACH_ALLOCNO_OBJECT (a, obj, oi)
- COPY_HARD_REG_SET (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
- OBJECT_CONFLICT_HARD_REGS (obj));
+ OBJECT_TOTAL_CONFLICT_HARD_REGS (obj)
+ = OBJECT_CONFLICT_HARD_REGS (obj);
#ifdef STACK_REGS
ALLOCNO_TOTAL_NO_STACK_REG_P (a) = ALLOCNO_NO_STACK_REG_P (a);
#endif
-= ALLOCNO_CALLS_CROSSED_NUM (a);
ALLOCNO_CHEAP_CALLS_CROSSED_NUM (parent_a)
-= ALLOCNO_CHEAP_CALLS_CROSSED_NUM (a);
+ /* Assume that ALLOCNO_CROSSED_CALLS_ABIS and
+ ALLOCNO_CROSSED_CALLS_CLOBBERED_REGS stay the same.
+ We'd need to rebuild the IR to do better. */
ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (parent_a)
-= ALLOCNO_EXCESS_PRESSURE_POINTS_NUM (a);
ira_assert (ALLOCNO_CALLS_CROSSED_NUM (parent_a) >= 0
allocno crossing calls. */
FOR_EACH_ALLOCNO (a, ai)
if (ALLOCNO_CALLS_CROSSED_NUM (a) != 0)
- ior_hard_reg_conflicts (a, &call_used_reg_set);
+ ior_hard_reg_conflicts (a, ira_need_caller_save_regs (a));
}
if (internal_flag_ira_verbose > 2 && ira_dump_file != NULL)
print_copies (ira_dump_file);
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