https://gcc.gnu.org/g:f166c9141b6dc2094bef42d5b632da8b608f7a34
commit f166c9141b6dc2094bef42d5b632da8b608f7a34
Author: Ondřej Machota <ondrejmach...@gmail.com>
Date: Fri Apr 25 21:57:46 2025 +0200
rtl-ssa-dce: remove c style code
Diff:
---
gcc/dce.cc | 453 +++++++++----------------------------------------------------
1 file changed, 61 insertions(+), 392 deletions(-)
diff --git a/gcc/dce.cc b/gcc/dce.cc
index 02da64c7669a..70c9faf27c59 100644
--- a/gcc/dce.cc
+++ b/gcc/dce.cc
@@ -1318,7 +1318,6 @@ public:
} // namespace
-// This struct could help to remove unordered_set for rtl ssa dce
struct offset_bitmap {
private:
const int m_offset;
@@ -1361,7 +1360,7 @@ private:
void mark_prelive_insn(insn_info *, auto_vec<set_info *>&);
auto_vec<set_info *> mark_prelive();
void mark();
- // void propagate_dead_phis();
+ std::unordered_set<insn_info *> propagate_dead_phis();
void reset_dead_debug_insn(insn_info *);
void reset_dead_debug();
void sweep();
@@ -1415,36 +1414,35 @@ rtl_ssa_dce::is_rtx_prelive(const_rtx insn) {
gcc_assert(insn != nullptr);
if (CALL_P (insn)
- /* We cannot delete pure or const sibling calls because it is
- hard to see the result. */
+ // We cannot delete pure or const sibling calls because it is
+ // hard to see the result.
&& (!SIBLING_CALL_P (insn))
- /* We can delete dead const or pure calls as long as they do not
- infinite loop. */
+ // We can delete dead const or pure calls as long as they do not
+ // infinite loop.
&& (RTL_CONST_OR_PURE_CALL_P (insn) && !RTL_LOOPING_CONST_OR_PURE_CALL_P
(insn))
- /* Don't delete calls that may throw if we cannot do so. */
+ // Don't delete calls that may throw if we cannot do so.
&& can_delete_call (insn))
return false;
if (!NONJUMP_INSN_P (insn))
- /* This handles jumps, notes, call_insns, debug_insns, ... */
+ // This handles jumps, notes, call_insns, debug_insns, ...
return true;
- /* Only rtx_insn should be handled here */
+ // Only rtx_insn should be handled here
gcc_assert(GET_CODE(insn) == INSN);
- /* Don't delete insns that may throw if we cannot do so. */
+ // Don't delete insns that may throw if we cannot do so.
if (!cfun->can_delete_dead_exceptions && !insn_nothrow_p (insn) &&
can_alter_cfg)
return true;
- /* Callee-save restores are needed. */
+ // Callee-save restores are needed.
if (RTX_FRAME_RELATED_P (insn) && crtl->shrink_wrapped_separate
&& find_reg_note (insn, REG_CFA_RESTORE, NULL))
return true;
rtx body = PATTERN(insn);
switch (GET_CODE(body)) {
- // Clobbers are handled inside is_prelive
- case CLOBBER: // gcc/gcc/testsuite/gcc.c-torture/compile/20000605-1.c
+ case CLOBBER:
case USE:
case VAR_LOCATION:
return true;
@@ -1462,12 +1460,14 @@ rtl_ssa_dce::is_rtx_prelive(const_rtx insn) {
bool
rtl_ssa_dce::is_prelive(insn_info *insn) {
- // Phi insns and debug insns are never prelive, bb head and end contain
- // artificial uses that we need to mark as prelive
- if (insn->is_bb_head() || insn->is_bb_end())
+ // bb head and end contain artificial uses that we need to mark as prelive
+ // debug instructions are also prelive, however, they are not added to the
+ // worklist
+ if (insn->is_bb_head() || insn->is_bb_end() || insn->is_debug_insn())
return true;
- if (insn->is_artificial() || insn->is_debug_insn())
+ // Phi instructions are never prelive
+ if (insn->is_artificial())
return false;
gcc_assert (insn->is_real());
@@ -1478,18 +1478,18 @@ rtl_ssa_dce::is_prelive(insn_info *insn) {
gcc_assert(def->is_reg());
- /* gcc.c-torture/execute/20000503-1.c - flags register is unused. Not all
- hard registers should be marked... */
+ // we should not delete the frame pointer because of the dward2frame pass
+ if (frame_pointer_needed && def->regno() == HARD_FRAME_POINTER_REGNUM)
+ return true;
- /* this ignores clobbers, which is probably fine */
+ // skip clobbers, they are handled inside is_rtx_prelive
if (def->kind() == access_kind::CLOBBER)
- return true;
+ continue;
gcc_assert (def->kind() == access_kind::SET);
- /* needed by gcc.c-torture/execute/pr51447.c */
- if (HARD_REGISTER_NUM_P (def->regno())
- && global_regs[def->regno()])
+ // needed by gcc.c-torture/execute/pr51447.c
+ if (HARD_REGISTER_NUM_P (def->regno()) && global_regs[def->regno()])
return true;
unsigned int picreg = PIC_OFFSET_TABLE_REGNUM;
@@ -1508,6 +1508,11 @@ rtl_ssa_dce::mark_prelive_insn(insn_info *insn,
auto_vec<set_info *> &worklist)
fprintf(dump_file, "Insn %d marked as prelive\n", insn->uid());
m_marked.emplace(insn);
+ // debug instruction are not added to worklist not to wake up possibly dead
+ // instructions
+ if (insn->is_debug_insn())
+ return;
+
for (use_info *use : insn->uses()) {
set_info* set = use->def();
if (set)
@@ -1538,11 +1543,10 @@ rtl_ssa_dce::mark() {
while (!worklist.is_empty()) {
set_info* set = worklist.pop();
insn_info* insn = set->insn();
- if (!insn)
+ if (!insn) // TODO: is this possible?
continue;
- /* A phi insn might be visited more times because of having more phi nodes
- The phi insn is never marked, only phi nodes (phi_info) */
+ // Skip already visited visited instructions.
auto uid = insn->uid();
if ((m_marked.count(insn) > 0) && !insn->is_phi())
continue;
@@ -1551,10 +1555,9 @@ rtl_ssa_dce::mark() {
use_array uses = insn->uses();
if (insn->is_phi()) {
- /* Each phi node has a unique uid, so only one bitmap (with shift) in
- might be used. */
phi_info* pi = as_a<phi_info *> (set);
auto pi_uid = pi->uid();
+ // Skip already visited phi node.
if (m_marked_phis.count(pi) > 0)
continue;
@@ -1565,7 +1568,7 @@ rtl_ssa_dce::mark() {
if (dump_file)
fprintf(dump_file, "Adding insn %d to worklist\n", insn->uid());
- for (use_info * use : uses) {
+ for (use_info *use : uses) {
set_info* parent_set = use->def();
if (!parent_set)
continue;
@@ -1575,6 +1578,7 @@ rtl_ssa_dce::mark() {
}
}
+// Clear debug_insn uses and set gen_rtx_UNKNOWN_VAR_LOC
void
rtl_ssa_dce::reset_dead_debug_insn(insn_info *insn) {
gcc_assert(insn->is_debug_insn());
@@ -1588,14 +1592,20 @@ rtl_ssa_dce::reset_dead_debug_insn(insn_info *insn) {
crtl->ssa->change_insn (change);
}
+// Iterate over all debug_insns and reset those for which at least one of the
+// uses isn't marked.
void
rtl_ssa_dce::reset_dead_debug() {
for (insn_info *insn : crtl->ssa->all_insns()) {
if (!insn->is_debug_insn())
continue;
+ // When propagate_dead_phis is ready, check if insn is in marked. If true,
then try
+ // to create debug instructions
+ // RTL SSA does not contain debug insntructions... we have to make sure
that uses are correct
+
// TODO : use iterate_safely?
- for (use_info * use: insn->uses()) {
+ for (use_info *use: insn->uses()) {
insn_info *parent_insn = use->def()->insn();
if ((parent_insn->is_phi() && m_marked_phis.count(as_a<phi_info
*>(use->def())) == 0)
|| (!parent_insn->is_phi() && m_marked.count(parent_insn) == 0)) {
@@ -1606,7 +1616,7 @@ rtl_ssa_dce::reset_dead_debug() {
}
}
-
+// Iterate over non-debug instructions in RPO and remove all that aren't
marked.
void
rtl_ssa_dce::sweep() {
if (dump_file)
@@ -1614,11 +1624,10 @@ rtl_ssa_dce::sweep() {
auto_vec<insn_change> to_delete;
for (insn_info *insn : crtl->ssa->nondebug_insns()) {
- // Artificial or marked insns cannot be deleted.
+ // Artificial or marked insns should not be deleted.
if (insn->is_artificial() || m_marked.count(insn) > 0)
continue;
- // std::cout << "delete insn: " << insn->uid() << '\n';
if (dump_file)
fprintf(dump_file, "Sweeping insn: %d\n", insn->uid());
@@ -1649,7 +1658,22 @@ rtl_ssa_dce::execute(function *fn) {
// internal compiler error: gcc.c-torture/execute/20040811-1.c -
rtl_ssa::function_info::add_phi_nodes
crtl->ssa = new rtl_ssa::function_info(fn);
+ if (dump_file)
+ dump(dump_file, crtl->ssa);
+
+ // std::cout << '\n' << function_name(cfun) << '\n';
+ // std::cout << "HARD_FRAME_POINTER_IS_ARG_POINTER: " <<
HARD_FRAME_POINTER_IS_ARG_POINTER << '\n';
+ // std::cout << "HARD_FRAME_POINTER_IS_FRAME_POINTER: " <<
HARD_FRAME_POINTER_IS_FRAME_POINTER << '\n';
+ // std::cout << "HARD_FRAME_POINTER_REGNUM: " << HARD_FRAME_POINTER_REGNUM
<< '\n';
+ // std::cout << "FRAME_POINTER_REGNUM: " << FRAME_POINTER_REGNUM << '\n';
+ // std::cout << "fixed_regs[HARD_FRAME_POINTER_REGNUM]: " <<
(fixed_regs[HARD_FRAME_POINTER_REGNUM] == 1) << '\n';
+ // std::cout << "fixed_regs[FRAME_POINTER_REGNUM]: " <<
(fixed_regs[FRAME_POINTER_REGNUM] == 1) << '\n';
+ // std::cout << "global_regs[HARD_FRAME_POINTER_REGNUM]: " <<
(global_regs[HARD_FRAME_POINTER_REGNUM] == 1) << '\n';
+ // std::cout << "global_regs[FRAME_POINTER_REGNUM]: " <<
(global_regs[FRAME_POINTER_REGNUM] == 1) << '\n';
+ // std::cout << "frame_pointer_needed: " << frame_pointer_needed << '\n';
+
mark();
+ // propagate_dead_phis();
if (MAY_HAVE_DEBUG_BIND_INSNS)
reset_dead_debug();
sweep();
@@ -1662,264 +1686,9 @@ rtl_ssa_dce::execute(function *fn) {
crtl->ssa = nullptr;
}
-static bool
-is_rtx_prelive(const_rtx insn) {
- switch (GET_CODE(insn)) {
- case PREFETCH:
- case UNSPEC:
- case TRAP_IF: /* testsuite/gcc.c-torture/execute/20020418-1.c */
- return true;
-
- default:
- return side_effects_p(insn);
- }
-}
-
-static bool
-rtl_ssa_dce_can_delete_call (const_rtx insn) {
- if (cfun->can_delete_dead_exceptions)
- return true;
- if (!insn_nothrow_p (insn))
- return false;
- // if (can_alter_cfg)
- return true;
- /* If we can't alter cfg, even when the call can't throw exceptions, it
- might have EDGE_ABNORMAL_CALL edges and so we shouldn't delete such
- calls. */
- // gcc_assert (CALL_P (insn));
- // if (BLOCK_FOR_INSN (insn) && BB_END (BLOCK_FOR_INSN (insn)) == insn)
- // {
- // edge e;
- // edge_iterator ei;
-
- // FOR_EACH_EDGE (e, ei, BLOCK_FOR_INSN (insn)->succs)
- // if ((e->flags & EDGE_ABNORMAL_CALL) != 0)
- // return false;
- // }
- // return true;
-}
-
-static bool
-is_rtx_insn_prelive(rtx_insn *insn) {
- gcc_assert(insn != nullptr);
-
- if (CALL_P (insn)
- /* We cannot delete pure or const sibling calls because it is
- hard to see the result. */
- && (!SIBLING_CALL_P (insn))
- /* We can delete dead const or pure calls as long as they do not
- infinite loop. */
- && (RTL_CONST_OR_PURE_CALL_P (insn) && !RTL_LOOPING_CONST_OR_PURE_CALL_P
(insn))
- /* Don't delete calls that may throw if we cannot do so. */
- && rtl_ssa_dce_can_delete_call (insn))
- return false;
-
- if (!NONJUMP_INSN_P (insn))
- /* This handles jumps, notes, call_insns, debug_insns, ... */
- return true;
-
- /* Only rtx_insn should be handled here */
- gcc_assert(GET_CODE(insn) == INSN);
-
- /* Don't delete insns that may throw if we cannot do so. */
- if (!cfun->can_delete_dead_exceptions && !insn_nothrow_p (insn))
- return true;
-
- /* Callee-save restores are needed. */
- if (RTX_FRAME_RELATED_P (insn) && crtl->shrink_wrapped_separate
- && find_reg_note (insn, REG_CFA_RESTORE, NULL))
- return true;
-
- rtx body = PATTERN(insn);
- switch (GET_CODE(body)) {
- // Clobbers are handled inside is_prelive - what about parallel?
- case CLOBBER: // gcc/gcc/testsuite/gcc.c-torture/compile/20000605-1.c
- case USE:
- case VAR_LOCATION:
- return true;
-
- case PARALLEL:
- for (int i = XVECLEN (body, 0) - 1; i >= 0; i--)
- if (is_rtx_prelive (XVECEXP (body, 0, i)))
- return true;
- return false;
-
- default:
- return is_rtx_prelive (body);
- }
-}
-
-static bool
-is_prelive(insn_info *insn)
-{
- /* Phi insns and debug insns are never prelive, bb head and end contain
- artificial uses that we need to mark as prelive */
- if (insn->is_bb_head() || insn->is_bb_end() || insn->is_debug_insn())
- return true;
-
- if (insn->is_artificial())
- return false;
-
- gcc_assert (insn->is_real());
- for (def_info *def : insn->defs()) {
- // The purpose of this pass is not to eliminate memory stores...
- if (def->is_mem())
- return true;
-
- gcc_assert(def->is_reg());
- // if (def->regno() == HARD_FRAME_POINTER_REGNUM)
- // std::cout << "set frame pointer (bp): " << def->regno() << " in: " <<
def->insn()->uid() << '\n';
-
- if (frame_pointer_needed && def->regno() == HARD_FRAME_POINTER_REGNUM) {
- // std::cerr << "bp marked as prelive\n";
- return true;
- }
-
- /* gcc.c-torture/execute/20000503-1.c - flags register is unused. Not all
- hard registers should be marked... */
-
- /* this ignores clobbers, which is probably fine */
- if (def->kind() == access_kind::CLOBBER)
- continue;
-
- gcc_assert (def->kind() == access_kind::SET);
-
- /* needed by gcc.c-torture/execute/pr51447.c */
- if (HARD_REGISTER_NUM_P (def->regno())
- && global_regs[def->regno()])
- return true;
-
- unsigned int picreg = PIC_OFFSET_TABLE_REGNUM;
- if (picreg != INVALID_REGNUM
- && fixed_regs[picreg]
- && def->regno() == picreg)
- return true;
- }
-
- return is_rtx_insn_prelive(insn->rtl());
-}
-
-static void
-rtl_ssa_dce_mark_prelive_insn(insn_info *insn, auto_vec<set_info *> &worklist,
- std::unordered_set<insn_info *> &marked)
-{
- if (dump_file)
- fprintf(dump_file, "Insn %d marked as prelive\n", insn->uid());
-
- marked.emplace(insn);
- if (insn->is_debug_insn())
- return;
-
- for (use_info *use : insn->uses()) {
- set_info *set = use->def();
- if (set)
- worklist.safe_push(set);
- }
-}
-
-static auto_vec<set_info *>
-rtl_ssa_dce_mark_prelive(std::unordered_set<insn_info *> &marked)
-{
- if (dump_file)
- fprintf(dump_file, "DCE: prelive phase\n");
-
- auto_vec<set_info *> worklist;
- for (insn_info * insn : crtl->ssa->all_insns()) {
- if (is_prelive(insn))
- rtl_ssa_dce_mark_prelive_insn(insn, worklist, marked);
- }
-
- return worklist;
-}
-
-static void
-rtl_ssa_dce_mark(std::unordered_set<insn_info *> &marked,
std::unordered_set<phi_info *> &marked_phis)
-{
- /* Phi insn might have more that one phi node:
gcc/gcc/testsuite/gcc.c-torture/execute/20000224-1.c */
- auto worklist = rtl_ssa_dce_mark_prelive(marked);
- if (dump_file)
- fprintf(dump_file, "DCE: marking phase\n");
-
- while (!worklist.is_empty()) {
- set_info* set = worklist.pop();
- insn_info* insn = set->insn();
- if (!insn)
- continue;
-
- /* A phi insn might be visited more times because of having more phi nodes
- The phi insn is never marked, only phi nodes (phi_info) */
- auto uid = insn->uid();
- if ((marked.count(insn) > 0) && !insn->is_phi())
- continue;
-
- marked.emplace(insn);
-
- use_array uses = insn->uses();
- if (insn->is_phi()) {
- /* Each phi node has a unique uid, so only one bitmap (with shift) in
- might be used. */
- phi_info* pi = as_a<phi_info *> (set);
- auto pi_uid = pi->uid();
- if (marked_phis.count(pi) > 0)
- continue;
-
- marked_phis.emplace(pi);
- uses = pi->inputs();
- }
-
- if (dump_file)
- fprintf(dump_file, "Adding insn %d to worklist\n", insn->uid());
-
- for (use_info * use : uses) {
- set_info* parent_set = use->def();
- if (!parent_set)
- continue;
-
- worklist.safe_push(parent_set);
- }
- }
-}
-
-// Iterate over non-debug instructions in RPO and remove all that aren't
marked.
-static void
-rtl_ssa_dce_sweep(std::unordered_set<insn_info *> &marked)
-{
- if (dump_file)
- fprintf(dump_file, "DCE: Sweep phase\n");
-
- auto_vec<insn_change> to_delete;
- for (insn_info * insn : crtl->ssa->nondebug_insns()) {
- // Artificial or marked insns cannot be deleted.
- if (insn->is_artificial() || marked.count(insn) > 0)
- continue;
-
- // std::cout << "delete insn: " << insn->uid() << '\n';
- if (dump_file)
- fprintf(dump_file, "Sweeping insn: %d\n", insn->uid());
-
- auto change = insn_change::delete_insn(insn);
- to_delete.safe_push(std::move(change));
-
- // If we use following way with reverse_nondebug_insns, not all insns seem
- // to be deleted...
- // crtl->ssa->change_insn(change);
- }
-
- auto_vec<insn_change*> changes(to_delete.length());
- for (size_t i = 0; i != to_delete.length(); ++i) {
- changes.safe_push(&to_delete[i]);
- }
-
- gcc_assert (crtl->ssa->verify_insn_changes(changes));
- crtl->ssa->change_insns(changes);
-
- if (dump_file)
- fprintf(dump_file, "DCE: finish sweep phase\n");
-}
-
// mark instructions that depend on a dead phi
-static std::unordered_set<insn_info *>
-propagate_dead_phis(std::unordered_set<insn_info *> &marked,
std::unordered_set<phi_info *> &marked_phis) {
+std::unordered_set<insn_info *>
+rtl_ssa_dce::propagate_dead_phis() {
std::unordered_set<phi_info *> visited_dead_phis;
std::unordered_set<insn_info *> depends_on_dead_phi;
auto_vec<set_info *> worklist;
@@ -2035,106 +1804,6 @@ wip(std::unordered_set<insn_info *> &marked,
std::unordered_set<phi_info *> &mar
}
}
-// Clear debug_insn uses and set gen_rtx_UNKNOWN_VAR_LOC
-static void
-reset_debug_insn_uses(insn_info * insn) {
- gcc_assert(insn->is_debug_insn());
-
- if (dump_file)
- fprintf(dump_file, "Resetting debug insn: %d\n", insn->uid());
-
- insn_change change (insn);
- change.new_uses = {};
- INSN_VAR_LOCATION_LOC (insn->rtl()) = gen_rtx_UNKNOWN_VAR_LOC ();
- crtl->ssa->change_insn (change);
-}
-
-// Iterate over all debug_insns and reset those for which at least one of the
-// uses isn't marked.
-static void
-rtl_ssa_dce_reset_dead_debug(std::unordered_set<insn_info *> &marked,
std::unordered_set<phi_info *> &marked_phis) {
- for (insn_info *insn : crtl->ssa->all_insns()) {
- if (!insn->is_debug_insn())
- continue;
-
- // When propagate_dead_phis is ready, check if insn is in marked. If true,
then try
- // to create debug instructions
- // RTL SSA does not contain debug insntructions... we have to make sure
that uses are correct
-
- // TODO : use iterate_safely?
- for (use_info * use: insn->uses()) {
- insn_info *parent_insn = use->def()->insn();
- if ((parent_insn->is_phi() && marked_phis.count(as_a<phi_info
*>(use->def())) == 0)
- || (!parent_insn->is_phi() && marked.count(parent_insn) == 0)) {
- reset_debug_insn_uses(insn);
- break;
- }
- }
- }
-}
-
-static void
-rtl_ssa_dce_init()
-{
- calculate_dominance_info(CDI_DOMINATORS);
- // internal compiler error: gcc.c-torture/execute/20040811-1.c -
rtl_ssa::function_info::add_phi_nodes
- crtl->ssa = new rtl_ssa::function_info(cfun);
-}
-
-static void
-rtl_ssa_dce_done()
-{
- free_dominance_info(CDI_DOMINATORS);
- if (crtl->ssa->perform_pending_updates())
- cleanup_cfg(0);
-
- delete crtl->ssa;
- crtl->ssa = nullptr;
-}
-
-static unsigned int
-rtl_ssa_dce_fn()
-{
- rtl_ssa_dce_init();
- // debug(crtl->ssa);
- if (dump_file)
- dump(dump_file, crtl->ssa);
- // std::cout << '\n' << function_name(cfun) << '\n';
- // std::cout << "HARD_FRAME_POINTER_IS_ARG_POINTER: " <<
HARD_FRAME_POINTER_IS_ARG_POINTER << '\n';
- // std::cout << "HARD_FRAME_POINTER_IS_FRAME_POINTER: " <<
HARD_FRAME_POINTER_IS_FRAME_POINTER << '\n';
- // std::cout << "HARD_FRAME_POINTER_REGNUM: " << HARD_FRAME_POINTER_REGNUM
<< '\n';
- // std::cout << "FRAME_POINTER_REGNUM: " << FRAME_POINTER_REGNUM << '\n';
- // std::cout << "fixed_regs[HARD_FRAME_POINTER_REGNUM]: " <<
(fixed_regs[HARD_FRAME_POINTER_REGNUM] == 1) << '\n';
- // std::cout << "fixed_regs[FRAME_POINTER_REGNUM]: " <<
(fixed_regs[FRAME_POINTER_REGNUM] == 1) << '\n';
- // std::cout << "global_regs[HARD_FRAME_POINTER_REGNUM]: " <<
(global_regs[HARD_FRAME_POINTER_REGNUM] == 1) << '\n';
- // std::cout << "global_regs[FRAME_POINTER_REGNUM]: " <<
(global_regs[FRAME_POINTER_REGNUM] == 1) << '\n';
- // std::cout << "frame_pointer_needed: " << frame_pointer_needed << '\n';
- std::unordered_set<insn_info *> marked;
- std::unordered_set<phi_info *> marked_phis;
- rtl_ssa_dce_mark(marked, marked_phis);
- propagate_dead_phis(marked, marked_phis);
- if (MAY_HAVE_DEBUG_BIND_INSNS)
- rtl_ssa_dce_reset_dead_debug(marked, marked_phis);
- rtl_ssa_dce_sweep(marked);
-
- // std::cerr << "\033[31m" << "SSA debug start" << "\033[0m" << "\n";
- // debug (crtl->ssa);
- // for (insn_info * insn : crtl->ssa->all_insns()) {
- // if (insn->is_artificial())
- // continue;
- // debug(insn->rtl());
- // }
- // std::cerr << "\033[31m" << "SSA debug end" << "\033[0m" << "\n";
- rtl_ssa_dce_done();
-
- /*
- if (delete_trivially_dead_insns(get_insns (), max_reg_num ())) {
- std::cerr << "\033[31m" << "rtl_ssa_dce did not delete everything :(" <<
"\033[0m" << "\n";
- } */
-
- return 0;
-}
-
rtl_opt_pass *
make_pass_fast_rtl_dce(gcc::context *ctxt)
{
@@ -2168,7 +1837,7 @@ namespace
/* opt_pass methods: */
bool gate(function *) final override { return optimize > 0 && flag_dce; }
- unsigned int execute(function * fn) final override { return
rtl_ssa_dce_fn(); }
+ unsigned int execute(function * fn) final override { return
rtl_ssa_dce().execute(fn); }
}; // class pass_rtl_ssa_dce
