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-rw-r--r--gcc/ChangeLog17
-rw-r--r--gcc/cgraph.h6
-rw-r--r--gcc/cgraphunit.c49
-rw-r--r--gcc/testsuite/gcc.dg/lto/noreturn-1_0.c21
-rw-r--r--gcc/testsuite/gcc.dg/lto/noreturn-1_1.c27
-rw-r--r--gcc/tree-inline.c76
6 files changed, 154 insertions, 42 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c131796..0ff31f1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,22 @@
2010-06-01 Jan Hubicka <jh@suse.cz>
+ * cgraph.h (tree_function_versioning): Update prototype.
+ (cgraph_function_versioning): Update prototype.
+ * cgraphunit.c (cgraph_copy_node_for_versioning): Accept bbs_to_copy
+ bitmap.
+ (cgraph_function_versioning): Accept new_entry_block and bbs_to_copy.
+ (cgraph_materialize_clone, save_inline_function_body): Update use of
+ tree_function_versioning.
+ * tree-inline.c (copy_bb): Look for previous copied block to link after;
+ fix debug output.
+ (copy_cfg_body): Accept new_entry_block and bbs_to_copy.
+ (copy_body): Likewise.
+ (expand_call_inline): Update use of copy_body.
+ (tree_function_versioning): Update use of copy body; accept
+ blocks_to_copy and new_entry.
+
+2010-06-01 Jan Hubicka <jh@suse.cz>
+
* gegenrtl.c: Remove unnecesary prototypes.
(gendecl): Remove.
(gendef): Produce static inline.
diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index 3c91f049..c82fc18 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -616,8 +616,10 @@ void init_cgraph (void);
struct cgraph_node *cgraph_function_versioning (struct cgraph_node *,
VEC(cgraph_edge_p,heap)*,
VEC(ipa_replace_map_p,gc)*,
- bitmap, const char *);
-void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap);
+ bitmap, bitmap, basic_block,
+ const char *);
+void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap,
+ bitmap, basic_block);
struct cgraph_node *save_inline_function_body (struct cgraph_node *);
void record_references_in_initializer (tree, bool);
bool cgraph_process_new_functions (void);
diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c
index 1d5ed0d..47686a4 100644
--- a/gcc/cgraphunit.c
+++ b/gcc/cgraphunit.c
@@ -2102,13 +2102,18 @@ update_call_expr (struct cgraph_node *new_version)
edges which should be redirected to point to
NEW_VERSION. ALL the callees edges of OLD_VERSION
are cloned to the new version node. Return the new
- version node. */
+ version node.
+
+ If non-NULL BLOCK_TO_COPY determine what basic blocks
+ was copied to prevent duplications of calls that are dead
+ in the clone. */
static struct cgraph_node *
cgraph_copy_node_for_versioning (struct cgraph_node *old_version,
tree new_decl,
- VEC(cgraph_edge_p,heap) *redirect_callers)
-{
+ VEC(cgraph_edge_p,heap) *redirect_callers,
+ bitmap bbs_to_copy)
+ {
struct cgraph_node *new_version;
struct cgraph_edge *e;
unsigned i;
@@ -2128,15 +2133,19 @@ cgraph_copy_node_for_versioning (struct cgraph_node *old_version,
new_version->count = old_version->count;
for (e = old_version->callees; e; e=e->next_callee)
- cgraph_clone_edge (e, new_version, e->call_stmt,
- e->lto_stmt_uid, REG_BR_PROB_BASE,
- CGRAPH_FREQ_BASE,
- e->loop_nest, true);
+ if (!bbs_to_copy
+ || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index))
+ cgraph_clone_edge (e, new_version, e->call_stmt,
+ e->lto_stmt_uid, REG_BR_PROB_BASE,
+ CGRAPH_FREQ_BASE,
+ e->loop_nest, true);
for (e = old_version->indirect_calls; e; e=e->next_callee)
- cgraph_clone_edge (e, new_version, e->call_stmt,
- e->lto_stmt_uid, REG_BR_PROB_BASE,
- CGRAPH_FREQ_BASE,
- e->loop_nest, true);
+ if (!bbs_to_copy
+ || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index))
+ cgraph_clone_edge (e, new_version, e->call_stmt,
+ e->lto_stmt_uid, REG_BR_PROB_BASE,
+ CGRAPH_FREQ_BASE,
+ e->loop_nest, true);
for (i = 0; VEC_iterate (cgraph_edge_p, redirect_callers, i, e); i++)
{
/* Redirect calls to the old version node to point to its new
@@ -2159,14 +2168,18 @@ cgraph_copy_node_for_versioning (struct cgraph_node *old_version,
new ones (according to results of prior analysis).
OLD_VERSION_NODE is the node that is versioned.
It returns the new version's cgraph node.
- ARGS_TO_SKIP lists arguments to be omitted from functions
- */
+ If non-NULL ARGS_TO_SKIP determine function parameters to remove
+ from new version.
+ If non-NULL BLOCK_TO_COPY determine what basic blocks to copy.
+ If non_NULL NEW_ENTRY determine new entry BB of the clone. */
struct cgraph_node *
cgraph_function_versioning (struct cgraph_node *old_version_node,
VEC(cgraph_edge_p,heap) *redirect_callers,
VEC (ipa_replace_map_p,gc)* tree_map,
bitmap args_to_skip,
+ bitmap bbs_to_copy,
+ basic_block new_entry_block,
const char *clone_name)
{
tree old_decl = old_version_node->decl;
@@ -2193,10 +2206,11 @@ cgraph_function_versioning (struct cgraph_node *old_version_node,
and update the edges of the new node. */
new_version_node =
cgraph_copy_node_for_versioning (old_version_node, new_decl,
- redirect_callers);
+ redirect_callers, bbs_to_copy);
/* Copy the OLD_VERSION_NODE function tree to the new version. */
- tree_function_versioning (old_decl, new_decl, tree_map, false, args_to_skip);
+ tree_function_versioning (old_decl, new_decl, tree_map, false, args_to_skip,
+ bbs_to_copy, new_entry_block);
/* Update the new version's properties.
Make The new version visible only within this translation unit. Make sure
@@ -2267,7 +2281,8 @@ save_inline_function_body (struct cgraph_node *node)
}
/* Copy the OLD_VERSION_NODE function tree to the new version. */
- tree_function_versioning (node->decl, first_clone->decl, NULL, true, NULL);
+ tree_function_versioning (node->decl, first_clone->decl, NULL, true, NULL,
+ NULL, NULL);
DECL_EXTERNAL (first_clone->decl) = 0;
DECL_COMDAT_GROUP (first_clone->decl) = NULL_TREE;
@@ -2296,7 +2311,7 @@ cgraph_materialize_clone (struct cgraph_node *node)
/* Copy the OLD_VERSION_NODE function tree to the new version. */
tree_function_versioning (node->clone_of->decl, node->decl,
node->clone.tree_map, true,
- node->clone.args_to_skip);
+ node->clone.args_to_skip, NULL, NULL);
if (cgraph_dump_file)
{
dump_function_to_file (node->clone_of->decl, cgraph_dump_file, dump_flags);
diff --git a/gcc/testsuite/gcc.dg/lto/noreturn-1_0.c b/gcc/testsuite/gcc.dg/lto/noreturn-1_0.c
new file mode 100644
index 0000000..eb71c64
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/noreturn-1_0.c
@@ -0,0 +1,21 @@
+void exit (int);
+__attribute__ ((noreturn))
+int
+call_me (void)
+{
+ exit (0);
+}
+void exit (int);
+__attribute__ ((noreturn))
+int
+call_me (void)
+{
+ exit (0);
+}
+void exit (int);
+__attribute__ ((noreturn))
+int
+call_me (void)
+{
+ exit (0);
+}
diff --git a/gcc/testsuite/gcc.dg/lto/noreturn-1_1.c b/gcc/testsuite/gcc.dg/lto/noreturn-1_1.c
new file mode 100644
index 0000000..8e8b060
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/noreturn-1_1.c
@@ -0,0 +1,27 @@
+/* { dg-lto-do run } */
+/* { dg-lto-options {{-O2 -fwhopr} } } */
+
+int call_me (void);
+int
+main(void)
+{
+ return call_me ();
+}
+/* { dg-lto-do run } */
+/* { dg-lto-options {{-O2 -fwhopr} } } */
+
+int call_me (void);
+int
+main(void)
+{
+ return call_me ();
+}
+/* { dg-lto-do run } */
+/* { dg-lto-options {{-O2 -fwhopr} } } */
+
+int call_me (void);
+int
+main(void)
+{
+ return call_me ();
+}
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
index 4ac1b3f..fce6ae5 100644
--- a/gcc/tree-inline.c
+++ b/gcc/tree-inline.c
@@ -1488,11 +1488,17 @@ copy_bb (copy_body_data *id, basic_block bb, int frequency_scale,
basic_block copy_basic_block;
tree decl;
gcov_type freq;
+ basic_block prev;
+
+ /* Search for previous copied basic block. */
+ prev = bb->prev_bb;
+ while (!prev->aux)
+ prev = prev->prev_bb;
/* create_basic_block() will append every new block to
basic_block_info automatically. */
copy_basic_block = create_basic_block (NULL, (void *) 0,
- (basic_block) bb->prev_bb->aux);
+ (basic_block) prev->aux);
copy_basic_block->count = bb->count * count_scale / REG_BR_PROB_BASE;
/* We are going to rebuild frequencies from scratch. These values
@@ -1728,7 +1734,7 @@ copy_bb (copy_body_data *id, basic_block bb, int frequency_scale,
= CIF_ORIGINALLY_INDIRECT_CALL;
if (dump_file)
{
- fprintf (dump_file, "Created new direct edge to %s",
+ fprintf (dump_file, "Created new direct edge to %s\n",
cgraph_node_name (dest));
}
}
@@ -2131,7 +2137,8 @@ maybe_move_debug_stmts_to_successors (copy_body_data *id, basic_block new_bb)
static tree
copy_cfg_body (copy_body_data * id, gcov_type count, int frequency_scale,
- basic_block entry_block_map, basic_block exit_block_map)
+ basic_block entry_block_map, basic_block exit_block_map,
+ bitmap blocks_to_copy, basic_block new_entry)
{
tree callee_fndecl = id->src_fn;
/* Original cfun for the callee, doesn't change. */
@@ -2170,32 +2177,46 @@ copy_cfg_body (copy_body_data * id, gcov_type count, int frequency_scale,
/* Use aux pointers to map the original blocks to copy. */
FOR_EACH_BB_FN (bb, cfun_to_copy)
- {
- basic_block new_bb = copy_bb (id, bb, frequency_scale, count_scale);
- bb->aux = new_bb;
- new_bb->aux = bb;
- }
+ if (!blocks_to_copy || bitmap_bit_p (blocks_to_copy, bb->index))
+ {
+ basic_block new_bb = copy_bb (id, bb, frequency_scale, count_scale);
+ bb->aux = new_bb;
+ new_bb->aux = bb;
+ }
last = last_basic_block;
/* Now that we've duplicated the blocks, duplicate their edges. */
FOR_ALL_BB_FN (bb, cfun_to_copy)
- need_debug_cleanup |= copy_edges_for_bb (bb, count_scale, exit_block_map);
+ if (!blocks_to_copy
+ || (bb->index > 0 && bitmap_bit_p (blocks_to_copy, bb->index)))
+ need_debug_cleanup |= copy_edges_for_bb (bb, count_scale, exit_block_map);
if (gimple_in_ssa_p (cfun))
FOR_ALL_BB_FN (bb, cfun_to_copy)
- copy_phis_for_bb (bb, id);
+ if (!blocks_to_copy
+ || (bb->index > 0 && bitmap_bit_p (blocks_to_copy, bb->index)))
+ copy_phis_for_bb (bb, id);
- FOR_ALL_BB_FN (bb, cfun_to_copy)
+ if (new_entry)
{
- if (need_debug_cleanup
- && bb->index != ENTRY_BLOCK
- && bb->index != EXIT_BLOCK)
- maybe_move_debug_stmts_to_successors (id, (basic_block) bb->aux);
- ((basic_block)bb->aux)->aux = NULL;
- bb->aux = NULL;
+ edge e;
+ e = make_edge (entry_block_map, (basic_block)new_entry->aux, EDGE_FALLTHRU);
+ e->probability = REG_BR_PROB_BASE;
+ e->count = entry_block_map->count;
}
+ FOR_ALL_BB_FN (bb, cfun_to_copy)
+ if (bb->aux)
+ {
+ if (need_debug_cleanup
+ && bb->index != ENTRY_BLOCK
+ && bb->index != EXIT_BLOCK)
+ maybe_move_debug_stmts_to_successors (id, (basic_block) bb->aux);
+ ((basic_block)bb->aux)->aux = NULL;
+ bb->aux = NULL;
+ }
+
/* Zero out AUX fields of newly created block during EH edge
insertion. */
for (; last < last_basic_block; last++)
@@ -2317,14 +2338,16 @@ copy_tree_body (copy_body_data *id)
static tree
copy_body (copy_body_data *id, gcov_type count, int frequency_scale,
- basic_block entry_block_map, basic_block exit_block_map)
+ basic_block entry_block_map, basic_block exit_block_map,
+ bitmap blocks_to_copy, basic_block new_entry)
{
tree fndecl = id->src_fn;
tree body;
/* If this body has a CFG, walk CFG and copy. */
gcc_assert (ENTRY_BLOCK_PTR_FOR_FUNCTION (DECL_STRUCT_FUNCTION (fndecl)));
- body = copy_cfg_body (id, count, frequency_scale, entry_block_map, exit_block_map);
+ body = copy_cfg_body (id, count, frequency_scale, entry_block_map, exit_block_map,
+ blocks_to_copy, new_entry);
copy_debug_stmts (id);
return body;
@@ -3924,7 +3947,7 @@ expand_call_inline (basic_block bb, gimple stmt, copy_body_data *id)
duplicate our body before altering anything. */
copy_body (id, bb->count,
cg_edge->frequency * REG_BR_PROB_BASE / CGRAPH_FREQ_BASE,
- bb, return_block);
+ bb, return_block, NULL, NULL);
/* Reset the escaped solution. */
if (cfun->gimple_df)
@@ -4957,11 +4980,18 @@ update_clone_info (copy_body_data * id)
tree with another tree while duplicating the function's
body, TREE_MAP represents the mapping between these
trees. If UPDATE_CLONES is set, the call_stmt fields
- of edges of clones of the function will be updated. */
+ of edges of clones of the function will be updated.
+
+ If non-NULL ARGS_TO_SKIP determine function parameters to remove
+ from new version.
+ If non-NULL BLOCK_TO_COPY determine what basic blocks to copy.
+ If non_NULL NEW_ENTRY determine new entry BB of the clone.
+*/
void
tree_function_versioning (tree old_decl, tree new_decl,
VEC(ipa_replace_map_p,gc)* tree_map,
- bool update_clones, bitmap args_to_skip)
+ bool update_clones, bitmap args_to_skip,
+ bitmap blocks_to_copy, basic_block new_entry)
{
struct cgraph_node *old_version_node;
struct cgraph_node *new_version_node;
@@ -5113,7 +5143,7 @@ tree_function_versioning (tree old_decl, tree new_decl,
/* Copy the Function's body. */
copy_body (&id, old_entry_block->count, REG_BR_PROB_BASE,
- ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR);
+ ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR, blocks_to_copy, new_entry);
if (DECL_RESULT (old_decl) != NULL_TREE)
{
generated by cgit v1.1 at 2024-10-31 15:31:15 +0000