/* Callgraph based analysis of static variables.
- Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ Copyright (C) 2004-2014 Free Software Foundation, Inc.
Contributed by Kenneth Zadeck <zadeck@naturalbridge.com>
This file is part of GCC.
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
-#include "tree-flow.h"
+#include "print-tree.h"
+#include "calls.h"
+#include "basic-block.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "tree-eh.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "gimple-iterator.h"
+#include "gimple-walk.h"
+#include "tree-cfg.h"
+#include "tree-ssa-loop-niter.h"
#include "tree-inline.h"
#include "tree-pass.h"
#include "langhooks.h"
-#include "pointer-set.h"
-#include "ggc.h"
#include "ipa-utils.h"
-#include "gimple.h"
-#include "cgraph.h"
-#include "output.h"
#include "flags.h"
-#include "timevar.h"
#include "diagnostic.h"
#include "gimple-pretty-print.h"
#include "langhooks.h"
#include "target.h"
#include "lto-streamer.h"
+#include "data-streamer.h"
+#include "tree-streamer.h"
#include "cfgloop.h"
#include "tree-scalar-evolution.h"
#include "intl.h"
/* Array, indexed by cgraph node uid, of function states. */
-DEF_VEC_P (funct_state);
-DEF_VEC_ALLOC_P (funct_state, heap);
-static VEC (funct_state, heap) *funct_state_vec;
+static vec<funct_state> funct_state_vec;
/* Holders of ipa cgraph hooks: */
static struct cgraph_node_hook_list *function_insertion_hook_holder;
known_finite, warned_about, "const");
}
-void
+static void
warn_function_noreturn (tree decl)
{
static struct pointer_set_t *warned_about;
- if (!lang_hooks.missing_noreturn_ok_p (decl))
+ if (!lang_hooks.missing_noreturn_ok_p (decl)
+ && targetm.warn_func_return (decl))
warned_about
= suggest_attribute (OPT_Wsuggest_attribute_noreturn, decl,
true, warned_about, "noreturn");
}
-/* Init the function state. */
-
-static void
-finish_state (void)
-{
- free (funct_state_vec);
-}
-
/* Return true if we have a function state for NODE. */
static inline bool
has_function_state (struct cgraph_node *node)
{
- if (!funct_state_vec
- || VEC_length (funct_state, funct_state_vec) <= (unsigned int)node->uid)
+ if (!funct_state_vec.exists ()
+ || funct_state_vec.length () <= (unsigned int)node->uid)
return false;
- return VEC_index (funct_state, funct_state_vec, node->uid) != NULL;
+ return funct_state_vec[node->uid] != NULL;
}
/* Return the function state from NODE. */
static inline funct_state
get_function_state (struct cgraph_node *node)
{
- if (!funct_state_vec
- || VEC_length (funct_state, funct_state_vec) <= (unsigned int)node->uid
- || !VEC_index (funct_state, funct_state_vec, node->uid))
+ if (!funct_state_vec.exists ()
+ || funct_state_vec.length () <= (unsigned int)node->uid
+ || !funct_state_vec[node->uid])
/* We might want to put correct previously_known state into varying. */
return &varying_state;
- return VEC_index (funct_state, funct_state_vec, node->uid);
+ return funct_state_vec[node->uid];
}
/* Set the function state S for NODE. */
static inline void
set_function_state (struct cgraph_node *node, funct_state s)
{
- if (!funct_state_vec
- || VEC_length (funct_state, funct_state_vec) <= (unsigned int)node->uid)
- VEC_safe_grow_cleared (funct_state, heap, funct_state_vec, node->uid + 1);
- VEC_replace (funct_state, funct_state_vec, node->uid, s);
+ if (!funct_state_vec.exists ()
+ || funct_state_vec.length () <= (unsigned int)node->uid)
+ funct_state_vec.safe_grow_cleared (node->uid + 1);
+ funct_state_vec[node->uid] = s;
}
/* Check to see if the use (or definition when CHECKING_WRITE is true)
else
{
if (dump_file && (dump_flags & TDF_DETAILS))
- fprintf (dump_file, " neihter\n");
+ fprintf (dump_file, " neither\n");
*state = IPA_NEITHER;
*looping = true;
}
*looping = looping2;
else
*looping = MIN (*looping, looping2);
+ *state = state2;
}
else if (state2 != IPA_NEITHER)
*looping = MIN (*looping, looping2);
*looping = MAX (*looping, looping2);
}
-/* Recognize special cases of builtins that are by themself not pure or const
+/* Recognize special cases of builtins that are by themselves not pure or const
but function using them is. */
static bool
special_builtin_state (enum pure_const_state_e *state, bool *looping,
case BUILT_IN_RETURN:
case BUILT_IN_UNREACHABLE:
case BUILT_IN_ALLOCA:
+ case BUILT_IN_ALLOCA_WITH_ALIGN:
case BUILT_IN_STACK_SAVE:
case BUILT_IN_STACK_RESTORE:
case BUILT_IN_EH_POINTER:
}
/* When not in IPA mode, we can still handle self recursion. */
- if (!ipa && callee_t == current_function_decl)
+ if (!ipa && callee_t
+ && recursive_call_p (current_function_decl, callee_t))
{
if (dump_file)
fprintf (dump_file, " Recursive call can loop.\n");
local->looping = true;
}
- /* Either calle is unknown or we are doing local analysis.
+ /* Either callee is unknown or we are doing local analysis.
Look to see if there are any bits available for the callee (such as by
declaration or because it is builtin) and process solely on the basis of
those bits. */
/* Wrapper around check_decl for loads in local more. */
static bool
-check_load (gimple stmt ATTRIBUTE_UNUSED, tree op, void *data)
+check_load (gimple, tree op, tree, void *data)
{
if (DECL_P (op))
check_decl ((funct_state)data, op, false, false);
/* Wrapper around check_decl for stores in local more. */
static bool
-check_store (gimple stmt ATTRIBUTE_UNUSED, tree op, void *data)
+check_store (gimple, tree op, tree, void *data)
{
if (DECL_P (op))
check_decl ((funct_state)data, op, true, false);
/* Wrapper around check_decl for loads in ipa mode. */
static bool
-check_ipa_load (gimple stmt ATTRIBUTE_UNUSED, tree op, void *data)
+check_ipa_load (gimple, tree op, tree, void *data)
{
if (DECL_P (op))
check_decl ((funct_state)data, op, false, true);
/* Wrapper around check_decl for stores in ipa mode. */
static bool
-check_ipa_store (gimple stmt ATTRIBUTE_UNUSED, tree op, void *data)
+check_ipa_store (gimple, tree op, tree, void *data)
{
if (DECL_P (op))
check_decl ((funct_state)data, op, true, true);
check_stmt (gimple_stmt_iterator *gsip, funct_state local, bool ipa)
{
gimple stmt = gsi_stmt (*gsip);
- unsigned int i = 0;
if (is_gimple_debug (stmt))
return;
print_gimple_stmt (dump_file, stmt, 0, 0);
}
- if (gimple_has_volatile_ops (stmt))
+ if (gimple_has_volatile_ops (stmt)
+ && !gimple_clobber_p (stmt))
{
local->pure_const_state = IPA_NEITHER;
if (dump_file)
if (cfun->can_throw_non_call_exceptions)
{
if (dump_file)
- fprintf (dump_file, " can throw; looping");
+ fprintf (dump_file, " can throw; looping\n");
local->looping = true;
}
if (stmt_can_throw_external (stmt))
{
if (dump_file)
- fprintf (dump_file, " can throw externally");
+ fprintf (dump_file, " can throw externally\n");
local->can_throw = true;
}
+ else
+ if (dump_file)
+ fprintf (dump_file, " can throw\n");
}
switch (gimple_code (stmt))
{
/* Target of long jump. */
{
if (dump_file)
- fprintf (dump_file, " nonlocal label is not const/pure");
+ fprintf (dump_file, " nonlocal label is not const/pure\n");
local->pure_const_state = IPA_NEITHER;
}
break;
case GIMPLE_ASM:
- for (i = 0; i < gimple_asm_nclobbers (stmt); i++)
+ if (gimple_asm_clobbers_memory_p (stmt))
{
- tree op = gimple_asm_clobber_op (stmt, i);
- if (strcmp (TREE_STRING_POINTER (TREE_VALUE (op)), "memory") == 0)
- {
- if (dump_file)
- fprintf (dump_file, " memory asm clobber is not const/pure");
- /* Abandon all hope, ye who enter here. */
- local->pure_const_state = IPA_NEITHER;
- }
+ if (dump_file)
+ fprintf (dump_file, " memory asm clobber is not const/pure\n");
+ /* Abandon all hope, ye who enter here. */
+ local->pure_const_state = IPA_NEITHER;
}
if (gimple_asm_volatile_p (stmt))
{
if (dump_file)
- fprintf (dump_file, " volatile is not const/pure");
+ fprintf (dump_file, " volatile is not const/pure\n");
/* Abandon all hope, ye who enter here. */
local->pure_const_state = IPA_NEITHER;
local->looping = true;
analyze_function (struct cgraph_node *fn, bool ipa)
{
tree decl = fn->decl;
- tree old_decl = current_function_decl;
funct_state l;
basic_block this_block;
l->looping_previously_known = true;
l->looping = false;
l->can_throw = false;
+ state_from_flags (&l->state_previously_known, &l->looping_previously_known,
+ flags_from_decl_or_type (fn->decl),
+ cgraph_node_cannot_return (fn));
+
+ if (fn->thunk.thunk_p || fn->alias)
+ {
+ /* Thunk gets propagated through, so nothing interesting happens. */
+ gcc_assert (ipa);
+ return l;
+ }
if (dump_file)
{
fprintf (dump_file, "\n\n local analysis of %s\n ",
- cgraph_node_name (fn));
+ fn->name ());
}
push_cfun (DECL_STRUCT_FUNCTION (decl));
- current_function_decl = decl;
- FOR_EACH_BB (this_block)
+ FOR_EACH_BB_FN (this_block, cfun)
{
gimple_stmt_iterator gsi;
struct walk_stmt_info wi;
- memset (&wi, 0, sizeof(wi));
+ memset (&wi, 0, sizeof (wi));
for (gsi = gsi_start_bb (this_block);
!gsi_end_p (gsi);
gsi_next (&gsi))
if (mark_dfs_back_edges ())
{
/* Preheaders are needed for SCEV to work.
- Simple lateches and recorded exits improve chances that loop will
- proved to be finite in testcases such as in loop-15.c and loop-24.c */
- loop_optimizer_init (LOOPS_NORMAL
+ Simple latches and recorded exits improve chances that loop will
+ proved to be finite in testcases such as in loop-15.c
+ and loop-24.c */
+ loop_optimizer_init (LOOPS_HAVE_PREHEADERS
+ | LOOPS_HAVE_SIMPLE_LATCHES
| LOOPS_HAVE_RECORDED_EXITS);
if (dump_file && (dump_flags & TDF_DETAILS))
flow_loops_dump (dump_file, NULL, 0);
}
else
{
- loop_iterator li;
struct loop *loop;
scev_initialize ();
- FOR_EACH_LOOP (li, loop, 0)
+ FOR_EACH_LOOP (loop, 0)
if (!finite_loop_p (loop))
{
if (dump_file)
- fprintf (dump_file, " can not prove finiteness of loop %i\n", loop->num);
+ fprintf (dump_file, " can not prove finiteness of "
+ "loop %i\n", loop->num);
l->looping =true;
break;
}
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, " checking previously known:");
- state_from_flags (&l->state_previously_known, &l->looping_previously_known,
- flags_from_decl_or_type (fn->decl),
- cgraph_node_cannot_return (fn));
better_state (&l->pure_const_state, &l->looping,
l->state_previously_known,
l->can_throw = false;
pop_cfun ();
- current_function_decl = old_decl;
if (dump_file)
{
if (l->looping)
CONST. */
static void
-generate_summary (void)
+pure_const_generate_summary (void)
{
struct cgraph_node *node;
We process AVAIL_OVERWRITABLE functions. We can not use the results
by default, but the info can be used at LTO with -fwhole-program or
- when function got clonned and the clone is AVAILABLE. */
+ when function got cloned and the clone is AVAILABLE. */
- for (node = cgraph_nodes; node; node = node->next)
+ FOR_EACH_DEFINED_FUNCTION (node)
if (cgraph_function_body_availability (node) >= AVAIL_OVERWRITABLE)
set_function_state (node, analyze_function (node, true));
/* Serialize the ipa info for lto. */
static void
-pure_const_write_summary (cgraph_node_set set,
- varpool_node_set vset ATTRIBUTE_UNUSED)
+pure_const_write_summary (void)
{
struct cgraph_node *node;
struct lto_simple_output_block *ob
= lto_create_simple_output_block (LTO_section_ipa_pure_const);
unsigned int count = 0;
- cgraph_node_set_iterator csi;
+ lto_symtab_encoder_iterator lsei;
+ lto_symtab_encoder_t encoder;
- for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ encoder = lto_get_out_decl_state ()->symtab_node_encoder;
+
+ for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei);
+ lsei_next_function_in_partition (&lsei))
{
- node = csi_node (csi);
- if (node->analyzed && has_function_state (node))
+ node = lsei_cgraph_node (lsei);
+ if (node->definition && has_function_state (node))
count++;
}
- lto_output_uleb128_stream (ob->main_stream, count);
+ streamer_write_uhwi_stream (ob->main_stream, count);
/* Process all of the functions. */
- for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ for (lsei = lsei_start_function_in_partition (encoder); !lsei_end_p (lsei);
+ lsei_next_function_in_partition (&lsei))
{
- node = csi_node (csi);
- if (node->analyzed && has_function_state (node))
+ node = lsei_cgraph_node (lsei);
+ if (node->definition && has_function_state (node))
{
struct bitpack_d bp;
funct_state fs;
int node_ref;
- lto_cgraph_encoder_t encoder;
+ lto_symtab_encoder_t encoder;
fs = get_function_state (node);
- encoder = ob->decl_state->cgraph_node_encoder;
- node_ref = lto_cgraph_encoder_encode (encoder, node);
- lto_output_uleb128_stream (ob->main_stream, node_ref);
+ encoder = ob->decl_state->symtab_node_encoder;
+ node_ref = lto_symtab_encoder_encode (encoder, node);
+ streamer_write_uhwi_stream (ob->main_stream, node_ref);
/* Note that flags will need to be read in the opposite
order as we are pushing the bitflags into FLAGS. */
bp_pack_value (&bp, fs->looping_previously_known, 1);
bp_pack_value (&bp, fs->looping, 1);
bp_pack_value (&bp, fs->can_throw, 1);
- lto_output_bitpack (&bp);
+ streamer_write_bitpack (&bp);
}
}
if (ib)
{
unsigned int i;
- unsigned int count = lto_input_uleb128 (ib);
+ unsigned int count = streamer_read_uhwi (ib);
for (i = 0; i < count; i++)
{
struct cgraph_node *node;
struct bitpack_d bp;
funct_state fs;
- lto_cgraph_encoder_t encoder;
+ lto_symtab_encoder_t encoder;
fs = XCNEW (struct funct_state_d);
- index = lto_input_uleb128 (ib);
- encoder = file_data->cgraph_node_encoder;
- node = lto_cgraph_encoder_deref (encoder, index);
+ index = streamer_read_uhwi (ib);
+ encoder = file_data->symtab_node_encoder;
+ node = cgraph (lto_symtab_encoder_deref (encoder, index));
set_function_state (node, fs);
/* Note that the flags must be read in the opposite
order in which they were written (the bitflags were
pushed into FLAGS). */
- bp = lto_input_bitpack (ib);
+ bp = streamer_read_bitpack (ib);
fs->pure_const_state
= (enum pure_const_state_e) bp_unpack_value (&bp, 2);
fs->state_previously_known
{
int flags = flags_from_decl_or_type (node->decl);
fprintf (dump_file, "Read info for %s/%i ",
- cgraph_node_name (node),
- node->uid);
+ node->name (),
+ node->order);
if (flags & ECF_CONST)
fprintf (dump_file, " const");
if (flags & ECF_PURE)
return (!e->can_throw_external);
}
-/* Return true if NODE is self recursive function. */
+/* Return true if NODE is self recursive function.
+ Indirectly recursive functions appears as non-trivial strongly
+ connected components, so we need to care about self recursion
+ only. */
static bool
self_recursive_p (struct cgraph_node *node)
{
struct cgraph_edge *e;
for (e = node->callees; e; e = e->next_callee)
- if (e->callee == node)
+ if (cgraph_function_node (e->callee, NULL) == node)
return true;
return false;
}
int i;
struct ipa_dfs_info * w_info;
- order_pos = ipa_utils_reduced_inorder (order, true, false, NULL);
+ order_pos = ipa_reduced_postorder (order, true, false, NULL);
if (dump_file)
{
dump_cgraph (dump_file);
- ipa_utils_print_order(dump_file, "reduced", order, order_pos);
+ ipa_print_order (dump_file, "reduced", order, order_pos);
}
- /* Propagate the local information thru the call graph to produce
+ /* Propagate the local information through the call graph to produce
the global information. All the nodes within a cycle will have
the same info so we collapse cycles first. Then we can do the
propagation in one pass from the leaves to the roots. */
int count = 0;
node = order[i];
+ if (node->alias)
+ continue;
+
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "Starting cycle\n");
funct_state w_l = get_function_state (w);
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, " Visiting %s/%i state:%s looping %i\n",
- cgraph_node_name (w),
- w->uid,
+ w->name (),
+ w->order,
pure_const_names[w_l->pure_const_state],
w_l->looping);
/* Now walk the edges and merge in callee properties. */
for (e = w->callees; e; e = e->next_callee)
{
- struct cgraph_node *y = e->callee;
+ enum availability avail;
+ struct cgraph_node *y = cgraph_function_node (e->callee, &avail);
enum pure_const_state_e edge_state = IPA_CONST;
bool edge_looping = false;
{
fprintf (dump_file,
" Call to %s/%i",
- cgraph_node_name (e->callee),
- e->callee->uid);
+ e->callee->name (),
+ e->callee->order);
}
- if (cgraph_function_body_availability (y) > AVAIL_OVERWRITABLE)
+ if (avail > AVAIL_OVERWRITABLE)
{
funct_state y_l = get_function_state (y);
if (dump_file && (dump_flags & TDF_DETAILS))
break;
/* Now process the indirect call. */
- for (ie = node->indirect_calls; ie; ie = ie->next_callee)
+ for (ie = w->indirect_calls; ie; ie = ie->next_callee)
{
enum pure_const_state_e edge_state = IPA_CONST;
bool edge_looping = false;
break;
/* And finally all loads and stores. */
- for (i = 0; ipa_ref_list_reference_iterate (&node->ref_list, i, ref); i++)
+ for (i = 0; ipa_ref_list_reference_iterate (&w->ref_list, i, ref); i++)
{
enum pure_const_state_e ref_state = IPA_CONST;
bool ref_looping = false;
w_l->pure_const_state = this_state;
w_l->looping = this_looping;
- switch (this_state)
- {
- case IPA_CONST:
- if (!TREE_READONLY (w->decl))
- {
- warn_function_const (w->decl, !this_looping);
- if (dump_file)
- fprintf (dump_file, "Function found to be %sconst: %s\n",
- this_looping ? "looping " : "",
- cgraph_node_name (w));
- }
- cgraph_set_const_flag (w, true, this_looping);
- break;
+ /* Inline clones share declaration with their offline copies;
+ do not modify their declarations since the offline copy may
+ be different. */
+ if (!w->global.inlined_to)
+ switch (this_state)
+ {
+ case IPA_CONST:
+ if (!TREE_READONLY (w->decl))
+ {
+ warn_function_const (w->decl, !this_looping);
+ if (dump_file)
+ fprintf (dump_file, "Function found to be %sconst: %s\n",
+ this_looping ? "looping " : "",
+ w->name ());
+ }
+ cgraph_set_const_flag (w, true, this_looping);
+ break;
- case IPA_PURE:
- if (!DECL_PURE_P (w->decl))
- {
- warn_function_pure (w->decl, !this_looping);
- if (dump_file)
- fprintf (dump_file, "Function found to be %spure: %s\n",
- this_looping ? "looping " : "",
- cgraph_node_name (w));
- }
- cgraph_set_pure_flag (w, true, this_looping);
- break;
+ case IPA_PURE:
+ if (!DECL_PURE_P (w->decl))
+ {
+ warn_function_pure (w->decl, !this_looping);
+ if (dump_file)
+ fprintf (dump_file, "Function found to be %spure: %s\n",
+ this_looping ? "looping " : "",
+ w->name ());
+ }
+ cgraph_set_pure_flag (w, true, this_looping);
+ break;
- default:
- break;
- }
+ default:
+ break;
+ }
w_info = (struct ipa_dfs_info *) w->aux;
w = w_info->next_cycle;
}
}
- /* Cleanup. */
- for (node = cgraph_nodes; node; node = node->next)
- {
- /* Get rid of the aux information. */
- if (node->aux)
- {
- w_info = (struct ipa_dfs_info *) node->aux;
- free (node->aux);
- node->aux = NULL;
- }
- }
-
+ ipa_free_postorder_info ();
free (order);
}
int i;
struct ipa_dfs_info * w_info;
- order_pos = ipa_utils_reduced_inorder (order, true, false, ignore_edge);
+ order_pos = ipa_reduced_postorder (order, true, false, ignore_edge);
if (dump_file)
{
dump_cgraph (dump_file);
- ipa_utils_print_order(dump_file, "reduced for nothrow", order, order_pos);
+ ipa_print_order (dump_file, "reduced for nothrow", order, order_pos);
}
- /* Propagate the local information thru the call graph to produce
+ /* Propagate the local information through the call graph to produce
the global information. All the nodes within a cycle will have
the same info so we collapse cycles first. Then we can do the
propagation in one pass from the leaves to the roots. */
bool can_throw = false;
node = order[i];
+ if (node->alias)
+ continue;
+
/* Find the worst state for any node in the cycle. */
w = node;
while (w)
for (e = w->callees; e; e = e->next_callee)
{
- struct cgraph_node *y = e->callee;
+ enum availability avail;
+ struct cgraph_node *y = cgraph_function_node (e->callee, &avail);
- if (cgraph_function_body_availability (y) > AVAIL_OVERWRITABLE)
+ if (avail > AVAIL_OVERWRITABLE)
{
funct_state y_l = get_function_state (y);
}
for (ie = node->indirect_calls; ie; ie = ie->next_callee)
if (ie->can_throw_external)
- can_throw = true;
+ {
+ can_throw = true;
+ break;
+ }
w_info = (struct ipa_dfs_info *) w->aux;
w = w_info->next_cycle;
}
funct_state w_l = get_function_state (w);
if (!can_throw && !TREE_NOTHROW (w->decl))
{
- struct cgraph_edge *e;
- cgraph_set_nothrow_flag (w, true);
- for (e = w->callers; e; e = e->next_caller)
- e->can_throw_external = false;
- if (dump_file)
- fprintf (dump_file, "Function found to be nothrow: %s\n",
- cgraph_node_name (w));
+ /* Inline clones share declaration with their offline copies;
+ do not modify their declarations since the offline copy may
+ be different. */
+ if (!w->global.inlined_to)
+ {
+ cgraph_set_nothrow_flag (w, true);
+ if (dump_file)
+ fprintf (dump_file, "Function found to be nothrow: %s\n",
+ w->name ());
+ }
}
else if (can_throw && !TREE_NOTHROW (w->decl))
w_l->can_throw = true;
}
}
- /* Cleanup. */
- for (node = cgraph_nodes; node; node = node->next)
- {
- /* Get rid of the aux information. */
- if (node->aux)
- {
- w_info = (struct ipa_dfs_info *) node->aux;
- free (node->aux);
- node->aux = NULL;
- }
- }
-
+ ipa_free_postorder_info ();
free (order);
}
propagate_pure_const ();
/* Cleanup. */
- for (node = cgraph_nodes; node; node = node->next)
+ FOR_EACH_FUNCTION (node)
if (has_function_state (node))
free (get_function_state (node));
- VEC_free (funct_state, heap, funct_state_vec);
- finish_state ();
+ funct_state_vec.release ();
return 0;
}
&& !seen_error ());
}
-struct ipa_opt_pass_d pass_ipa_pure_const =
+namespace {
+
+const pass_data pass_data_ipa_pure_const =
{
- {
- IPA_PASS,
- "pure-const", /* name */
- gate_pure_const, /* gate */
- propagate, /* execute */
- NULL, /* sub */
- NULL, /* next */
- 0, /* static_pass_number */
- TV_IPA_PURE_CONST, /* tv_id */
- 0, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0 /* todo_flags_finish */
- },
- generate_summary, /* generate_summary */
- pure_const_write_summary, /* write_summary */
- pure_const_read_summary, /* read_summary */
- NULL, /* write_optimization_summary */
- NULL, /* read_optimization_summary */
- NULL, /* stmt_fixup */
- 0, /* TODOs */
- NULL, /* function_transform */
- NULL /* variable_transform */
+ IPA_PASS, /* type */
+ "pure-const", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ true, /* has_gate */
+ true, /* has_execute */
+ TV_IPA_PURE_CONST, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
};
+class pass_ipa_pure_const : public ipa_opt_pass_d
+{
+public:
+ pass_ipa_pure_const (gcc::context *ctxt)
+ : ipa_opt_pass_d (pass_data_ipa_pure_const, ctxt,
+ pure_const_generate_summary, /* generate_summary */
+ pure_const_write_summary, /* write_summary */
+ pure_const_read_summary, /* read_summary */
+ NULL, /* write_optimization_summary */
+ NULL, /* read_optimization_summary */
+ NULL, /* stmt_fixup */
+ 0, /* function_transform_todo_flags_start */
+ NULL, /* function_transform */
+ NULL) /* variable_transform */
+ {}
+
+ /* opt_pass methods: */
+ bool gate () { return gate_pure_const (); }
+ unsigned int execute () { return propagate (); }
+
+}; // class pass_ipa_pure_const
+
+} // anon namespace
+
+ipa_opt_pass_d *
+make_pass_ipa_pure_const (gcc::context *ctxt)
+{
+ return new pass_ipa_pure_const (ctxt);
+}
+
/* Return true if function should be skipped for local pure const analysis. */
static bool
if (cgraph_function_body_availability (node) <= AVAIL_OVERWRITABLE)
{
if (dump_file)
- fprintf (dump_file, "Function is not available or overwrittable; not analyzing.\n");
+ fprintf (dump_file, "Function is not available or overwritable; not analyzing.\n");
return true;
}
return false;
bool skip;
struct cgraph_node *node;
- node = cgraph_node (current_function_decl);
+ node = cgraph_get_node (current_function_decl);
skip = skip_function_for_local_pure_const (node);
if (!warn_suggest_attribute_const
&& !warn_suggest_attribute_pure
/* Do NORETURN discovery. */
if (!skip && !TREE_THIS_VOLATILE (current_function_decl)
- && EDGE_COUNT (EXIT_BLOCK_PTR->preds) == 0)
+ && EDGE_COUNT (EXIT_BLOCK_PTR_FOR_FN (cfun)->preds) == 0)
{
warn_function_noreturn (cfun->decl);
if (dump_file)
fprintf (dump_file, "Function found to be noreturn: %s\n",
- lang_hooks.decl_printable_name (current_function_decl, 2));
+ current_function_name ());
/* Update declaration and reduce profile to executed once. */
TREE_THIS_VOLATILE (current_function_decl) = 1;
if (dump_file)
fprintf (dump_file, "Function found to be %sconst: %s\n",
l->looping ? "looping " : "",
- lang_hooks.decl_printable_name (current_function_decl,
- 2));
+ current_function_name ());
}
else if (DECL_LOOPING_CONST_OR_PURE_P (current_function_decl)
&& !l->looping)
}
if (dump_file)
fprintf (dump_file, "Function found to be non-looping: %s\n",
- lang_hooks.decl_printable_name (current_function_decl,
- 2));
+ current_function_name ());
}
break;
if (dump_file)
fprintf (dump_file, "Function found to be %spure: %s\n",
l->looping ? "looping " : "",
- lang_hooks.decl_printable_name (current_function_decl,
- 2));
+ current_function_name ());
}
else if (DECL_LOOPING_CONST_OR_PURE_P (current_function_decl)
&& !l->looping)
}
if (dump_file)
fprintf (dump_file, "Function found to be non-looping: %s\n",
- lang_hooks.decl_printable_name (current_function_decl,
- 2));
+ current_function_name ());
}
break;
}
if (!l->can_throw && !TREE_NOTHROW (current_function_decl))
{
- struct cgraph_edge *e;
-
cgraph_set_nothrow_flag (node, true);
- for (e = node->callers; e; e = e->next_caller)
- e->can_throw_external = false;
changed = true;
if (dump_file)
fprintf (dump_file, "Function found to be nothrow: %s\n",
- lang_hooks.decl_printable_name (current_function_decl,
- 2));
+ current_function_name ());
}
- if (l)
- free (l);
+ free (l);
if (changed)
return execute_fixup_cfg ();
else
return 0;
}
-struct gimple_opt_pass pass_local_pure_const =
+namespace {
+
+const pass_data pass_data_local_pure_const =
+{
+ GIMPLE_PASS, /* type */
+ "local-pure-const", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ true, /* has_gate */
+ true, /* has_execute */
+ TV_IPA_PURE_CONST, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
+};
+
+class pass_local_pure_const : public gimple_opt_pass
+{
+public:
+ pass_local_pure_const (gcc::context *ctxt)
+ : gimple_opt_pass (pass_data_local_pure_const, ctxt)
+ {}
+
+ /* opt_pass methods: */
+ opt_pass * clone () { return new pass_local_pure_const (m_ctxt); }
+ bool gate () { return gate_pure_const (); }
+ unsigned int execute () { return local_pure_const (); }
+
+}; // class pass_local_pure_const
+
+} // anon namespace
+
+gimple_opt_pass *
+make_pass_local_pure_const (gcc::context *ctxt)
+{
+ return new pass_local_pure_const (ctxt);
+}
+
+/* Emit noreturn warnings. */
+
+static unsigned int
+execute_warn_function_noreturn (void)
+{
+ if (!TREE_THIS_VOLATILE (current_function_decl)
+ && EDGE_COUNT (EXIT_BLOCK_PTR_FOR_FN (cfun)->preds) == 0)
+ warn_function_noreturn (current_function_decl);
+ return 0;
+}
+
+static bool
+gate_warn_function_noreturn (void)
{
- {
- GIMPLE_PASS,
- "local-pure-const", /* name */
- gate_pure_const, /* gate */
- local_pure_const, /* execute */
- NULL, /* sub */
- NULL, /* next */
- 0, /* static_pass_number */
- TV_IPA_PURE_CONST, /* tv_id */
- 0, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0 /* todo_flags_finish */
- }
+ return warn_suggest_attribute_noreturn;
+}
+
+namespace {
+
+const pass_data pass_data_warn_function_noreturn =
+{
+ GIMPLE_PASS, /* type */
+ "*warn_function_noreturn", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ true, /* has_gate */
+ true, /* has_execute */
+ TV_NONE, /* tv_id */
+ PROP_cfg, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
};
+
+class pass_warn_function_noreturn : public gimple_opt_pass
+{
+public:
+ pass_warn_function_noreturn (gcc::context *ctxt)
+ : gimple_opt_pass (pass_data_warn_function_noreturn, ctxt)
+ {}
+
+ /* opt_pass methods: */
+ bool gate () { return gate_warn_function_noreturn (); }
+ unsigned int execute () { return execute_warn_function_noreturn (); }
+
+}; // class pass_warn_function_noreturn
+
+} // anon namespace
+
+gimple_opt_pass *
+make_pass_warn_function_noreturn (gcc::context *ctxt)
+{
+ return new pass_warn_function_noreturn (ctxt);
+}
+
+
projects / gcc.git / blobdiff