You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
/* This pass converts stack-like registers from the "flat register
file" model that gcc uses, to a stack convention that the 387 uses.
#include "recog.h"
#include "output.h"
#include "basic-block.h"
+#include "cfglayout.h"
#include "varray.h"
#include "reload.h"
#include "ggc.h"
+#include "timevar.h"
+#include "tree-pass.h"
+#include "target.h"
+#include "vecprim.h"
+
+#ifdef STACK_REGS
/* We use this array to cache info about insns, because otherwise we
spend too much time in stack_regs_mentioned_p.
Indexed by insn UIDs. A value of zero is uninitialized, one indicates
the insn uses stack registers, two indicates the insn does not use
stack registers. */
-static GTY(()) varray_type stack_regs_mentioned_data;
-
-#ifdef STACK_REGS
+static VEC(char,heap) *stack_regs_mentioned_data;
#define REG_STACK_SIZE (LAST_STACK_REG - FIRST_STACK_REG + 1)
+int regstack_completed = 0;
+
/* This is the basic stack record. TOP is an index into REG[] such
that REG[TOP] is the top of stack. If TOP is -1 the stack is empty.
static basic_block current_block;
/* In the current_block, whether we're processing the first register
- stack or call instruction, i.e. the the regstack is currently the
+ stack or call instruction, i.e. the regstack is currently the
same as BLOCK_INFO(current_block)->stack_in. */
static bool starting_stack_p;
return 0;
uid = INSN_UID (insn);
- max = VARRAY_SIZE (stack_regs_mentioned_data);
+ max = VEC_length (char, stack_regs_mentioned_data);
if (uid >= max)
{
/* Allocate some extra size to avoid too many reallocs, but
do not grow too quickly. */
- max = uid + uid / 20;
- VARRAY_GROW (stack_regs_mentioned_data, max);
+ max = uid + uid / 20 + 1;
+ VEC_safe_grow_cleared (char, heap, stack_regs_mentioned_data, max);
}
- test = VARRAY_CHAR (stack_regs_mentioned_data, uid);
+ test = VEC_index (char, stack_regs_mentioned_data, uid);
if (test == 0)
{
/* This insn has yet to be examined. Do so now. */
test = stack_regs_mentioned_p (PATTERN (insn)) ? 1 : 2;
- VARRAY_CHAR (stack_regs_mentioned_data, uid) = test;
+ VEC_replace (char, stack_regs_mentioned_data, uid, test);
}
return test == 1;
pat = & XEXP (*pat, 0);
break;
+ case UNSPEC:
+ if (XINT (*pat, 1) == UNSPEC_TRUNC_NOOP)
+ pat = & XVECEXP (*pat, 0, 0);
+ return pat;
+
case FLOAT_TRUNCATE:
if (!flag_unsafe_math_optimizations)
return pat;
result = DECL_RTL_IF_SET (DECL_RESULT (decl));
if (result != 0)
- {
-#ifdef FUNCTION_OUTGOING_VALUE
- result
- = FUNCTION_OUTGOING_VALUE (TREE_TYPE (DECL_RESULT (decl)), decl);
-#else
- result = FUNCTION_VALUE (TREE_TYPE (DECL_RESULT (decl)), decl);
-#endif
- }
+ result = targetm.calls.function_value (TREE_TYPE (DECL_RESULT (decl)),
+ decl, true);
return result != 0 && STACK_REG_P (result) ? result : 0;
}
gcc_assert (regno <= LAST_STACK_REG);
gcc_assert (STACK_REG_P (*reg));
- gcc_assert (GET_MODE_CLASS (GET_MODE (*reg)) == MODE_FLOAT
+ gcc_assert (SCALAR_FLOAT_MODE_P (GET_MODE (*reg))
|| GET_MODE_CLASS (GET_MODE (*reg)) == MODE_COMPLEX_FLOAT);
*reg = FP_MODE_REG (regno, GET_MODE (*reg));
hard_regno = get_hard_regnum (regstack, reg);
- gcc_assert (hard_regno >= FIRST_STACK_REG);
if (hard_regno == FIRST_STACK_REG)
return;
+ if (hard_regno == -1)
+ {
+ /* Something failed if the register wasn't on the stack. If we had
+ malformed asms, we zapped the instruction itself, but that didn't
+ produce the same pattern of register sets as before. To prevent
+ further failure, adjust REGSTACK to include REG at TOP. */
+ gcc_assert (any_malformed_asm);
+ regstack->reg[++regstack->top] = REGNO (reg);
+ return;
+ }
+ gcc_assert (hard_regno >= FIRST_STACK_REG);
other_reg = regstack->top - (hard_regno - FIRST_STACK_REG);
}
else
{
+ rtx pat = PATTERN (insn);
+
gcc_assert (STACK_REG_P (dest));
/* Load from MEM, or possibly integer REG or constant, into the
stack. The stack mapping is changed to reflect that DEST is
now at top of stack. */
- /* The destination ought to be dead. */
- gcc_assert (get_hard_regnum (regstack, dest) < FIRST_STACK_REG);
+ /* The destination ought to be dead. However, there is a
+ special case with i387 UNSPEC_TAN, where destination is live
+ (an argument to fptan) but inherent load of 1.0 is modelled
+ as a load from a constant. */
+ if (! (GET_CODE (pat) == PARALLEL
+ && XVECLEN (pat, 0) == 2
+ && GET_CODE (XVECEXP (pat, 0, 1)) == SET
+ && GET_CODE (SET_SRC (XVECEXP (pat, 0, 1))) == UNSPEC
+ && XINT (SET_SRC (XVECEXP (pat, 0, 1)), 1) == UNSPEC_TAN))
+ gcc_assert (get_hard_regnum (regstack, dest) < FIRST_STACK_REG);
gcc_assert (regstack->top < REG_STACK_SIZE);
if (!note)
{
rtx t = *dest;
- if (get_hard_regnum (regstack, t) == -1)
- control_flow_insn_deleted
- |= move_nan_for_stack_reg (insn, regstack, t);
if (COMPLEX_MODE_P (GET_MODE (t)))
{
- t = FP_MODE_REG (REGNO (t) + 1, DFmode);
- if (get_hard_regnum (regstack, t) == -1)
- control_flow_insn_deleted
- |= move_nan_for_stack_reg (insn, regstack, t);
+ rtx u = FP_MODE_REG (REGNO (t) + 1, SFmode);
+ if (get_hard_regnum (regstack, u) == -1)
+ {
+ rtx pat2 = gen_rtx_CLOBBER (VOIDmode, u);
+ rtx insn2 = emit_insn_before (pat2, insn);
+ control_flow_insn_deleted
+ |= move_nan_for_stack_reg (insn2, regstack, u);
+ }
}
+ if (get_hard_regnum (regstack, t) == -1)
+ control_flow_insn_deleted
+ |= move_nan_for_stack_reg (insn, regstack, t);
}
}
}
replace_reg (src1, FIRST_STACK_REG);
break;
+ case UNSPEC_FXAM:
+
+ /* This insn only operate on the top of the stack. */
+
+ src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
+ emit_swap_insn (insn, regstack, *src1);
+
+ src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1));
+
+ replace_reg (src1, FIRST_STACK_REG);
+
+ if (src1_note)
+ {
+ remove_regno_note (insn, REG_DEAD,
+ REGNO (XEXP (src1_note, 0)));
+ emit_pop_insn (insn, regstack, XEXP (src1_note, 0),
+ EMIT_AFTER);
+ }
+
+ break;
+
case UNSPEC_SIN:
case UNSPEC_COS:
case UNSPEC_FRNDINT:
case UNSPEC_FRNDINT_TRUNC:
case UNSPEC_FRNDINT_MASK_PM:
- /* These insns only operate on the top of the stack. */
+ /* Above insns operate on the top of the stack. */
+
+ case UNSPEC_SINCOS_COS:
+ case UNSPEC_XTRACT_FRACT:
+
+ /* Above insns operate on the top two stack slots,
+ first part of one input, double output insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
emit_swap_insn (insn, regstack, *src1);
- /* Input should never die, it is
- replaced with output. */
+ /* Input should never die, it is replaced with output. */
src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1));
gcc_assert (!src1_note);
replace_reg (src1, FIRST_STACK_REG);
break;
+ case UNSPEC_SINCOS_SIN:
+ case UNSPEC_XTRACT_EXP:
+
+ /* These insns operate on the top two stack slots,
+ second part of one input, double output insn. */
+
+ regstack->top++;
+ /* FALLTHRU */
+
+ case UNSPEC_TAN:
+
+ /* For UNSPEC_TAN, regstack->top is already increased
+ by inherent load of constant 1.0. */
+
+ /* Output value is generated in the second stack slot.
+ Move current value from second slot to the top. */
+ regstack->reg[regstack->top]
+ = regstack->reg[regstack->top - 1];
+
+ gcc_assert (STACK_REG_P (*dest));
+
+ regstack->reg[regstack->top - 1] = REGNO (*dest);
+ SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
+ replace_reg (dest, FIRST_STACK_REG + 1);
+
+ src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
+
+ replace_reg (src1, FIRST_STACK_REG);
+ break;
+
case UNSPEC_FPATAN:
case UNSPEC_FYL2X:
case UNSPEC_FYL2XP1:
case UNSPEC_FSCALE_FRACT:
case UNSPEC_FPREM_F:
case UNSPEC_FPREM1_F:
- /* These insns operate on the top two stack slots.
+ /* These insns operate on the top two stack slots,
first part of double input, double output insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
/* Push the result back onto stack. Empty stack slot
will be filled in second part of insn. */
- if (STACK_REG_P (*dest)) {
- regstack->reg[regstack->top] = REGNO (*dest);
- SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
- replace_reg (dest, FIRST_STACK_REG);
- }
+ if (STACK_REG_P (*dest))
+ {
+ regstack->reg[regstack->top] = REGNO (*dest);
+ SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
+ replace_reg (dest, FIRST_STACK_REG);
+ }
replace_reg (src1, FIRST_STACK_REG);
replace_reg (src2, FIRST_STACK_REG + 1);
case UNSPEC_FSCALE_EXP:
case UNSPEC_FPREM_U:
case UNSPEC_FPREM1_U:
- /* These insns operate on the top two stack slots./
+ /* These insns operate on the top two stack slots,
second part of double input, double output insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
- src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1));
- src2_note = find_regno_note (insn, REG_DEAD, REGNO (*src2));
-
- /* Inputs should never die, they are
- replaced with outputs. */
- gcc_assert (!src1_note);
- gcc_assert (!src2_note);
-
- swap_to_top (insn, regstack, *src1, *src2);
-
/* Push the result back onto stack. Fill empty slot from
first part of insn and fix top of stack pointer. */
- if (STACK_REG_P (*dest)) {
- regstack->reg[regstack->top - 1] = REGNO (*dest);
- SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
- replace_reg (dest, FIRST_STACK_REG + 1);
- }
+ if (STACK_REG_P (*dest))
+ {
+ regstack->reg[regstack->top - 1] = REGNO (*dest);
+ SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
+ replace_reg (dest, FIRST_STACK_REG + 1);
+ }
replace_reg (src1, FIRST_STACK_REG);
replace_reg (src2, FIRST_STACK_REG + 1);
break;
- case UNSPEC_SINCOS_COS:
- case UNSPEC_TAN_ONE:
- case UNSPEC_XTRACT_FRACT:
- /* These insns operate on the top two stack slots,
- first part of one input, double output insn. */
+ case UNSPEC_C2_FLAG:
+ /* This insn operates on the top two stack slots,
+ third part of C2 setting double input insn. */
src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
-
- emit_swap_insn (insn, regstack, *src1);
-
- /* Input should never die, it is
- replaced with output. */
- src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1));
- gcc_assert (!src1_note);
-
- /* Push the result back onto stack. Empty stack slot
- will be filled in second part of insn. */
- if (STACK_REG_P (*dest)) {
- regstack->reg[regstack->top + 1] = REGNO (*dest);
- SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
- replace_reg (dest, FIRST_STACK_REG);
- }
-
- replace_reg (src1, FIRST_STACK_REG);
- break;
-
- case UNSPEC_SINCOS_SIN:
- case UNSPEC_TAN_TAN:
- case UNSPEC_XTRACT_EXP:
- /* These insns operate on the top two stack slots,
- second part of one input, double output insn. */
-
- src1 = get_true_reg (&XVECEXP (pat_src, 0, 0));
-
- emit_swap_insn (insn, regstack, *src1);
-
- /* Input should never die, it is
- replaced with output. */
- src1_note = find_regno_note (insn, REG_DEAD, REGNO (*src1));
- gcc_assert (!src1_note);
-
- /* Push the result back onto stack. Fill empty slot from
- first part of insn and fix top of stack pointer. */
- if (STACK_REG_P (*dest)) {
- regstack->reg[regstack->top] = REGNO (*dest);
- SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest));
- replace_reg (dest, FIRST_STACK_REG + 1);
-
- regstack->top++;
- }
+ src2 = get_true_reg (&XVECEXP (pat_src, 0, 1));
replace_reg (src1, FIRST_STACK_REG);
+ replace_reg (src2, FIRST_STACK_REG + 1);
break;
case UNSPEC_SAHF:
if (NOTE_P (insn) || INSN_DELETED_P (insn))
return control_flow_insn_deleted;
+ /* If this a noreturn call, we can't insert pop insns after it.
+ Instead, reset the stack state to empty. */
+ if (CALL_P (insn)
+ && find_reg_note (insn, REG_NORETURN, NULL))
+ {
+ regstack->top = -1;
+ CLEAR_HARD_REG_SET (regstack->reg_set);
+ return control_flow_insn_deleted;
+ }
+
/* If there is a REG_UNUSED note on a stack register on this insn,
the indicated reg must be popped. The REG_UNUSED note is removed,
since the form of the newly emitted pop insn references the reg,
should have been defined by now. */
static bool
-compensate_edge (edge e, FILE *file)
+compensate_edge (edge e)
{
basic_block source = e->src, target = e->dest;
stack target_stack = &BLOCK_INFO (target)->stack_in;
struct stack_def regstack;
int reg;
- if (file)
- fprintf (file, "Edge %d->%d: ", source->index, target->index);
+ if (dump_file)
+ fprintf (dump_file, "Edge %d->%d: ", source->index, target->index);
gcc_assert (target_stack->top != -2);
if (reg == -1)
{
- if (file)
- fprintf (file, "no changes needed\n");
+ if (dump_file)
+ fprintf (dump_file, "no changes needed\n");
return false;
}
}
- if (file)
+ if (dump_file)
{
- fprintf (file, "correcting stack to ");
- print_stack (file, target_stack);
+ fprintf (dump_file, "correcting stack to ");
+ print_stack (dump_file, target_stack);
}
/* Abnormal calls may appear to have values live in st(0), but the
{
/* Assert that the lifetimes are as we expect -- one value
live at st(0) on the end of the source block, and no
- values live at the beginning of the destination block. */
- gcc_assert (source_stack->top == 0);
+ values live at the beginning of the destination block.
+ For complex return values, we may have st(1) live as well. */
+ gcc_assert (source_stack->top == 0 || source_stack->top == 1);
gcc_assert (target_stack->top == -1);
return false;
}
source block to the stack_in of the destination block. */
static bool
-compensate_edges (FILE *file)
+compensate_edges (void)
{
bool inserted = false;
basic_block bb;
edge_iterator ei;
FOR_EACH_EDGE (e, ei, bb->succs)
- inserted |= compensate_edge (e, file);
+ inserted |= compensate_edge (e);
}
return inserted;
}
if (EDGE_CRITICAL_P (e1) != EDGE_CRITICAL_P (e2))
return EDGE_CRITICAL_P (e1) ? e1 : e2;
- /* Avoid non-deterministic behaviour. */
+ /* Avoid non-deterministic behavior. */
return (e1->src->index < e2->src->index) ? e1 : e2;
}
/* Convert stack register references in one block. */
static void
-convert_regs_1 (FILE *file, basic_block block)
+convert_regs_1 (basic_block block)
{
struct stack_def regstack;
block_info bi = BLOCK_INFO (block);
}
}
- if (file)
+ if (dump_file)
{
- fprintf (file, "\nBasic block %d\nInput stack: ", block->index);
- print_stack (file, &bi->stack_in);
+ fprintf (dump_file, "\nBasic block %d\nInput stack: ", block->index);
+ print_stack (dump_file, &bi->stack_in);
}
/* Process all insns in this block. Keep track of NEXT so that we
if (stack_regs_mentioned (insn)
|| CALL_P (insn))
{
- if (file)
+ if (dump_file)
{
- fprintf (file, " insn %d input stack: ",
+ fprintf (dump_file, " insn %d input stack: ",
INSN_UID (insn));
- print_stack (file, ®stack);
+ print_stack (dump_file, ®stack);
}
control_flow_insn_deleted |= subst_stack_regs (insn, ®stack);
starting_stack_p = false;
}
while (next);
- if (file)
+ if (dump_file)
{
- fprintf (file, "Expected live registers [");
+ fprintf (dump_file, "Expected live registers [");
for (reg = FIRST_STACK_REG; reg <= LAST_STACK_REG; ++reg)
if (TEST_HARD_REG_BIT (bi->out_reg_set, reg))
- fprintf (file, " %d", reg);
- fprintf (file, " ]\nOutput stack: ");
- print_stack (file, ®stack);
+ fprintf (dump_file, " %d", reg);
+ fprintf (dump_file, " ]\nOutput stack: ");
+ print_stack (dump_file, ®stack);
}
insn = BB_END (block);
{
rtx set;
- if (file)
- fprintf (file, "Emitting insn initializing reg %d\n", reg);
+ if (dump_file)
+ fprintf (dump_file, "Emitting insn initializing reg %d\n", reg);
set = gen_rtx_SET (VOIDmode, FP_MODE_REG (reg, SFmode), not_a_num);
insn = emit_insn_after (set, insn);
/* Convert registers in all blocks reachable from BLOCK. */
static void
-convert_regs_2 (FILE *file, basic_block block)
+convert_regs_2 (basic_block block)
{
basic_block *stack, *sp;
is only processed after all its predecessors. The number of predecessors
of every block has already been computed. */
- stack = xmalloc (sizeof (*stack) * n_basic_blocks);
+ stack = XNEWVEC (basic_block, n_basic_blocks);
sp = stack;
*sp++ = block;
*sp++ = e->dest;
}
- convert_regs_1 (file, block);
+ convert_regs_1 (block);
}
while (sp != stack);
to the stack-like registers the 387 uses. */
static void
-convert_regs (FILE *file)
+convert_regs (void)
{
int inserted;
basic_block b;
/* Process all blocks reachable from all entry points. */
FOR_EACH_EDGE (e, ei, ENTRY_BLOCK_PTR->succs)
- convert_regs_2 (file, e->dest);
+ convert_regs_2 (e->dest);
/* ??? Process all unreachable blocks. Though there's no excuse
for keeping these even when not optimizing. */
block_info bi = BLOCK_INFO (b);
if (! bi->done)
- convert_regs_2 (file, b);
+ convert_regs_2 (b);
}
- inserted |= compensate_edges (file);
+ inserted |= compensate_edges ();
clear_aux_for_blocks ();
if (inserted)
commit_edge_insertions ();
- if (file)
- fputc ('\n', file);
+ if (dump_file)
+ fputc ('\n', dump_file);
}
\f
/* Convert register usage from "flat" register file usage to a "stack
code duplication created when the converter inserts pop insns on
the edges. */
-bool
-reg_to_stack (FILE *file)
+static bool
+reg_to_stack (void)
{
basic_block bb;
int i;
int max_uid;
/* Clean up previous run. */
- stack_regs_mentioned_data = 0;
+ if (stack_regs_mentioned_data != NULL)
+ VEC_free (char, heap, stack_regs_mentioned_data);
/* See if there is something to do. Flow analysis is quite
expensive so we might save some compilation time. */
Also need to rebuild life when superblock scheduling is done
as it don't update liveness yet. */
if (!optimize
- || (flag_sched2_use_superblocks
+ || ((flag_sched2_use_superblocks || flag_sched2_use_traces)
&& flag_schedule_insns_after_reload))
{
count_or_remove_death_notes (NULL, 1);
- life_analysis (file, PROP_DEATH_NOTES);
+ life_analysis (PROP_DEATH_NOTES);
}
mark_dfs_back_edges ();
/* Copy live_at_end and live_at_start into temporaries. */
for (reg = FIRST_STACK_REG; reg <= LAST_STACK_REG; reg++)
{
- if (REGNO_REG_SET_P (bb->global_live_at_end, reg))
+ if (REGNO_REG_SET_P (bb->il.rtl->global_live_at_end, reg))
SET_HARD_REG_BIT (bi->out_reg_set, reg);
- if (REGNO_REG_SET_P (bb->global_live_at_start, reg))
+ if (REGNO_REG_SET_P (bb->il.rtl->global_live_at_start, reg))
SET_HARD_REG_BIT (bi->stack_in.reg_set, reg);
}
}
the PIC register hasn't been set up. In that case, fall back
on zero, which we can get from `ldz'. */
- if (flag_pic)
+ if ((flag_pic && !TARGET_64BIT)
+ || ix86_cmodel == CM_LARGE || ix86_cmodel == CM_LARGE_PIC)
not_a_num = CONST0_RTX (SFmode);
else
{
/* Allocate a cache for stack_regs_mentioned. */
max_uid = get_max_uid ();
- VARRAY_CHAR_INIT (stack_regs_mentioned_data, max_uid + 1,
- "stack_regs_mentioned cache");
+ stack_regs_mentioned_data = VEC_alloc (char, heap, max_uid + 1);
+ memset (VEC_address (char, stack_regs_mentioned_data),
+ 0, sizeof (char) * max_uid + 1);
- convert_regs (file);
+ convert_regs ();
free_aux_for_blocks ();
return true;
}
#endif /* STACK_REGS */
+\f
+static bool
+gate_handle_stack_regs (void)
+{
+#ifdef STACK_REGS
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+/* Convert register usage from flat register file usage to a stack
+ register file. */
+static unsigned int
+rest_of_handle_stack_regs (void)
+{
+#ifdef STACK_REGS
+ if (reg_to_stack () && optimize)
+ {
+ regstack_completed = 1;
+ if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK
+ | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0))
+ && (flag_reorder_blocks || flag_reorder_blocks_and_partition))
+ {
+ basic_block bb;
+
+ cfg_layout_initialize (0);
+
+ reorder_basic_blocks ();
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
+
+ FOR_EACH_BB (bb)
+ if (bb->next_bb != EXIT_BLOCK_PTR)
+ bb->aux = bb->next_bb;
+ cfg_layout_finalize ();
+ }
+ }
+ else
+ regstack_completed = 1;
+#endif
+ return 0;
+}
-#include "gt-reg-stack.h"
+struct tree_opt_pass pass_stack_regs =
+{
+ "stack", /* name */
+ gate_handle_stack_regs, /* gate */
+ rest_of_handle_stack_regs, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ TV_REG_STACK, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func |
+ TODO_ggc_collect, /* todo_flags_finish */
+ 'k' /* letter */
+};
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