+2005-04-09 Caroline Tice <ctice@apple.com>
+
+ * bb-reorder.c (find_rarely_executed_basic_blocks_and_crossing_edges):
+ Remove targetm.have_named_sections test.
+ (fix_edges_for_rarely_executed_code): Likewise.
+ (insert_section_boundary_note): Likewise.
+ (reorder_basic_blocks): Check partitioning flag before calling
+ verify_hot_cold_block_grouping.
+ * dbxout.c (dbxout_function_end): Get hot/cold section labels from
+ the function struct rather than global variables.
+ * dwarf2out.c (COLD_TEXT_SECTION_LABEL): New macro.
+ (COLD_END_LABEL): Likewise
+ (cold_text_section_label): New static global variable.
+ (cold_end_label): Likewise.
+ (dwarf2out_switch_text_section): Get hot/cold section labels from
+ the function struct rather than global variables.
+ (output_aranges): Use cold_text_section_label and cold_end_label;
+ check partitioning flag before putting out delta.
+ (output_ranges): Remove incorrect code attempting to use
+ hot/cold labels.
+ (output_line_info): Get cold section label from function struct.
+ (add_location_or_const_value_attribute): Likewise.
+ (get_subprogram_die): Get hot/cold section labels from function struct.
+ (dwarf2out_var_location): Likewise.
+ (dwarf2out_init): Generate cold_text_section_label and cold_end_label;
+ write out cold_text_section_label if partition flag is set.
+ (dwarf2out_finish): Write out cold_end_label if partition flag is set;
+ * function.h (struct function): Add new fields to point to hot/cold
+ section labels: hot_section_label, cold_section_label,
+ hot_section_end_label and cold_section_end_label; also add new field
+ for cold text section name, unlikely_text_section_name.
+ * opts.c (decode_options): Turn off partitioning flag if
+ !targetm.have_named_sections.
+ * output.h (hot_section_label): Remove.
+ (hot_section_end_label): Remove.
+ (cold_section_end_label): Remove.
+ (unlikely_section_label): Remove.
+ (unlikely_text_section_name): Remove.
+ * passes.c (rest_of_handle_final): Remove code that frees
+ unlikely_text_section_name.
+ * varasm.c (unlikely_section_label): Remove.
+ (hot_section_label): Remove.
+ (hot_section_end_label): Remove.
+ (cold_section_end_label): Remove.
+ (unlikely_text_section_name): Remove.
+ (initialize_cold_section_name): Modify to call
+ targetm.strip_name_encoding; to store cold section name in current
+ function struct, if it exists; and to only use the decl_section_name
+ if flag_named_sections is true.
+ (unlikely_text_section): Modify to get section name out of current
+ function struct, if there is one; otherwise build it from
+ UNLIKELY_EXECUTED_TEXT_SECTION_NAME.
+ (in_unlikely_text_section): Likewise.
+ (named_section): Modify to get/put cold section name in current function
+ struct, if there is one.
+ (function_section): Change 'bool unlikely' to 'int reloc'; check
+ targetm.have_named_sections before calling named_section.
+ (current_function_section): Likewise.
+ (assemble_start_function): Modify to get/put unlikely_text_section_name
+ in current function struct; modify to get hot/cold section labels
+ from function struct; initialize labels using
+ ASM_GENERATE_INTERNAL_LABEL;
+ test partitioning flag before writing out hot section label.
+ (assemble_end_function): Test partitioning flag before writing out
+ hot/cold section labels.
+ (default_section_type_flags_1): Modify to use array instead of
+ char* for unlikely_text_section_name; set flags correctly for
+ cold text section if there is not a current function decl.
+
2005-04-09 Jakub Jelinek <jakub@redhat.com>
* tree.h (enum tree_index): Add TI_VA_LIST_GPR_COUNTER_FIELD
/* Mark every edge that crosses between sections. */
i = 0;
- if (targetm.have_named_sections)
+ FOR_EACH_BB (bb)
+ FOR_EACH_EDGE (e, ei, bb->succs)
{
- FOR_EACH_BB (bb)
- FOR_EACH_EDGE (e, ei, bb->succs)
- {
- if (e->src != ENTRY_BLOCK_PTR
- && e->dest != EXIT_BLOCK_PTR
- && BB_PARTITION (e->src) != BB_PARTITION (e->dest))
- {
- e->flags |= EDGE_CROSSING;
- if (i == *max_idx)
- {
- *max_idx *= 2;
- crossing_edges = xrealloc (crossing_edges,
- (*max_idx) * sizeof (edge));
- }
- crossing_edges[i++] = e;
- }
- else
- e->flags &= ~EDGE_CROSSING;
- }
+ if (e->src != ENTRY_BLOCK_PTR
+ && e->dest != EXIT_BLOCK_PTR
+ && BB_PARTITION (e->src) != BB_PARTITION (e->dest))
+ {
+ e->flags |= EDGE_CROSSING;
+ if (i == *max_idx)
+ {
+ *max_idx *= 2;
+ crossing_edges = xrealloc (crossing_edges,
+ (*max_idx) * sizeof (edge));
+ }
+ crossing_edges[i++] = e;
+ }
+ else
+ e->flags &= ~EDGE_CROSSING;
}
*n_crossing_edges = i;
}
fix_up_fall_thru_edges ();
- /* Only do the parts necessary for writing separate sections if
- the target architecture has the ability to write separate sections
- (i.e. it has named sections). Otherwise, the hot/cold partitioning
- information will be used when reordering blocks to try to put all
- the hot blocks together, then all the cold blocks, but no actual
- section partitioning will be done. */
-
- if (targetm.have_named_sections)
- {
- /* If the architecture does not have conditional branches that can
- span all of memory, convert crossing conditional branches into
- crossing unconditional branches. */
+ /* If the architecture does not have conditional branches that can
+ span all of memory, convert crossing conditional branches into
+ crossing unconditional branches. */
- if (!HAS_LONG_COND_BRANCH)
- fix_crossing_conditional_branches ();
+ if (!HAS_LONG_COND_BRANCH)
+ fix_crossing_conditional_branches ();
- /* If the architecture does not have unconditional branches that
- can span all of memory, convert crossing unconditional branches
- into indirect jumps. Since adding an indirect jump also adds
- a new register usage, update the register usage information as
- well. */
-
- if (!HAS_LONG_UNCOND_BRANCH)
- {
- fix_crossing_unconditional_branches ();
- reg_scan (get_insns(), max_reg_num ());
- }
-
- add_reg_crossing_jump_notes ();
+ /* If the architecture does not have unconditional branches that
+ can span all of memory, convert crossing unconditional branches
+ into indirect jumps. Since adding an indirect jump also adds
+ a new register usage, update the register usage information as
+ well. */
+
+ if (!HAS_LONG_UNCOND_BRANCH)
+ {
+ fix_crossing_unconditional_branches ();
+ reg_scan (get_insns(), max_reg_num ());
}
+
+ add_reg_crossing_jump_notes ();
}
/* Verify, in the basic block chain, that there is at most one switch
dump_flow_info (dump_file);
cfg_layout_finalize ();
- verify_hot_cold_block_grouping ();
+ if (flag_reorder_blocks_and_partition)
+ verify_hot_cold_block_grouping ();
timevar_pop (TV_REORDER_BLOCKS);
}
rtx new_note;
int first_partition = 0;
- if (flag_reorder_blocks_and_partition
- && targetm.have_named_sections)
+ if (flag_reorder_blocks_and_partition)
FOR_EACH_BB (bb)
{
if (!first_partition)
#else
if (flag_reorder_blocks_and_partition)
{
+ struct function *cfun = DECL_STRUCT_FUNCTION (decl);
+
dbxout_begin_empty_stabs (N_FUN);
- dbxout_stab_value_label_diff (hot_section_end_label, hot_section_label);
+ dbxout_stab_value_label_diff (cfun->hot_section_end_label,
+ cfun->hot_section_label);
dbxout_begin_empty_stabs (N_FUN);
- dbxout_stab_value_label_diff (cold_section_end_label,
- unlikely_section_label);
+ dbxout_stab_value_label_diff (cfun->cold_section_end_label,
+ cfun->cold_section_label);
}
else
{
#ifndef TEXT_SECTION_LABEL
#define TEXT_SECTION_LABEL "Ltext"
#endif
+#ifndef COLD_TEXT_SECTION_LABEL
+#define COLD_TEXT_SECTION_LABEL "Ltext_cold"
+#endif
#ifndef DEBUG_LINE_SECTION_LABEL
#define DEBUG_LINE_SECTION_LABEL "Ldebug_line"
#endif
static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES];
static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
+static char cold_text_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
+static char cold_end_label[MAX_ARTIFICIAL_LABEL_BYTES];
static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
#ifndef TEXT_END_LABEL
#define TEXT_END_LABEL "Letext"
#endif
+#ifndef COLD_END_LABEL
+#define COLD_END_LABEL "Letext_cold"
+#endif
#ifndef BLOCK_BEGIN_LABEL
#define BLOCK_BEGIN_LABEL "LBB"
#endif
dwarf2out_switch_text_section (void)
{
dw_fde_ref fde;
+ struct function *cfun = DECL_STRUCT_FUNCTION (current_function_decl);
fde = &fde_table[fde_table_in_use - 1];
fde->dw_fde_switched_sections = true;
- fde->dw_fde_hot_section_label = xstrdup (hot_section_label);
- fde->dw_fde_hot_section_end_label = xstrdup (hot_section_end_label);
- fde->dw_fde_unlikely_section_label = xstrdup (unlikely_section_label);
- fde->dw_fde_unlikely_section_end_label = xstrdup (cold_section_end_label);
+ fde->dw_fde_hot_section_label = cfun->hot_section_label;
+ fde->dw_fde_hot_section_end_label = cfun->hot_section_end_label;
+ fde->dw_fde_unlikely_section_label = cfun->cold_section_label;
+ fde->dw_fde_unlikely_section_end_label = cfun->cold_section_end_label;
separate_line_info_table_in_use++;
}
}
dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_section_label, "Address");
- if (last_text_section == in_unlikely_executed_text
- || (last_text_section == in_named
- && last_text_section_name == unlikely_text_section_name))
- dw2_asm_output_delta (DWARF2_ADDR_SIZE, text_end_label,
- unlikely_section_label, "Length");
- else
- dw2_asm_output_delta (DWARF2_ADDR_SIZE, text_end_label,
- text_section_label, "Length");
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, text_end_label,
+ text_section_label, "Length");
+ if (flag_reorder_blocks_and_partition)
+ {
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, cold_text_section_label,
+ "Address");
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, cold_end_label,
+ cold_text_section_label, "Length");
+ }
for (i = 0; i < arange_table_in_use; i++)
{
base of the text section. */
if (separate_line_info_table_in_use == 0)
{
- if (last_text_section == in_unlikely_executed_text
- || (last_text_section == in_named
- && last_text_section_name == unlikely_text_section_name))
- {
- dw2_asm_output_delta (DWARF2_ADDR_SIZE, blabel,
- unlikely_section_label,
- fmt, i * 2 * DWARF2_ADDR_SIZE);
- dw2_asm_output_delta (DWARF2_ADDR_SIZE, elabel,
- unlikely_section_label, NULL);
- }
- else
- {
- dw2_asm_output_delta (DWARF2_ADDR_SIZE, blabel,
- text_section_label,
- fmt, i * 2 * DWARF2_ADDR_SIZE);
- dw2_asm_output_delta (DWARF2_ADDR_SIZE, elabel,
- text_section_label, NULL);
- }
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, blabel,
+ text_section_label,
+ fmt, i * 2 * DWARF2_ADDR_SIZE);
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, elabel,
+ text_section_label, NULL);
}
/* Otherwise, we add a DW_AT_entry_pc attribute to force the
long line_delta;
unsigned long current_file;
unsigned long function;
+ struct function *cfun = DECL_STRUCT_FUNCTION (current_function_decl);
ASM_GENERATE_INTERNAL_LABEL (l1, LINE_NUMBER_BEGIN_LABEL, 0);
ASM_GENERATE_INTERNAL_LABEL (l2, LINE_NUMBER_END_LABEL, 0);
current_line = 1;
if (last_text_section == in_unlikely_executed_text
|| (last_text_section == in_named
- && last_text_section_name == unlikely_text_section_name))
- strcpy (prev_line_label, unlikely_section_label);
+ && last_text_section_name == cfun->unlikely_text_section_name))
+ strcpy (prev_line_label, cfun->cold_section_label);
else
strcpy (prev_line_label, text_section_label);
for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index)
const char *endname;
dw_loc_list_ref list;
rtx varloc;
+ struct function *cfun = DECL_STRUCT_FUNCTION (current_function_decl);
/* We need to figure out what section we should use as the base
}
else if (last_text_section == in_unlikely_executed_text
|| (last_text_section == in_named
- && last_text_section_name == unlikely_text_section_name))
- secname = unlikely_section_label;
+ && last_text_section_name == cfun->unlikely_text_section_name))
+ secname = cfun->cold_section_label;
else
secname = text_section_label;
static rtx last_insn;
static const char *last_label;
tree decl;
+ struct function *cfun = DECL_STRUCT_FUNCTION (current_function_decl);
if (!DECL_P (NOTE_VAR_LOCATION_DECL (loc_note)))
return;
if (last_text_section == in_unlikely_executed_text
|| (last_text_section == in_named
- && last_text_section_name == unlikely_text_section_name))
- newloc->section_label = unlikely_section_label;
+ && last_text_section_name == cfun->unlikely_text_section_name))
+ newloc->section_label = cfun->cold_section_label;
else
newloc->section_label = text_section_label;
ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label,
DEBUG_ABBREV_SECTION_LABEL, 0);
ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0);
+ ASM_GENERATE_INTERNAL_LABEL (cold_text_section_label,
+ COLD_TEXT_SECTION_LABEL, 0);
+ ASM_GENERATE_INTERNAL_LABEL (cold_end_label, COLD_END_LABEL, 0);
ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label,
DEBUG_INFO_SECTION_LABEL, 0);
text_section ();
ASM_OUTPUT_LABEL (asm_out_file, text_section_label);
+ if (flag_reorder_blocks_and_partition)
+ {
+ unlikely_text_section ();
+ ASM_OUTPUT_LABEL (asm_out_file, cold_text_section_label);
+ }
}
/* A helper function for dwarf2out_finish called through
/* Output a terminator label for the .text section. */
text_section ();
targetm.asm_out.internal_label (asm_out_file, TEXT_END_LABEL, 0);
+ if (flag_reorder_blocks_and_partition)
+ {
+ unlikely_text_section ();
+ targetm.asm_out.internal_label (asm_out_file, COLD_END_LABEL, 0);
+ }
/* Output the source line correspondence table. We must do this
even if there is no line information. Otherwise, on an empty
/* The variables unexpanded so far. */
tree unexpanded_var_list;
+ /* Assembly labels for the hot and cold text sections, to
+ be used by debugger functions for determining the size of text
+ sections. */
+
+ const char * hot_section_label;
+ const char * cold_section_label;
+ const char * hot_section_end_label;
+ const char * cold_section_end_label;
+
+ /* String to be used for name of cold text sections, via
+ targetm.asm_out.named_section. */
+
+ const char *unlikely_text_section_name;
+
/* Collected bit flags. */
/* Nonzero if function being compiled needs to be given an address
flag_reorder_blocks_and_partition = 0;
flag_reorder_blocks = 1;
}
+
+ if (flag_reorder_blocks_and_partition
+ && !targetm.have_named_sections)
+ {
+ inform
+ ("-freorder-blocks-and-partition does not work on this architecture.");
+ flag_reorder_blocks_and_partition = 0;
+ flag_reorder_blocks = 1;
+ }
}
/* Handle target- and language-independent options. Return zero to
#endif
};
-extern char *unlikely_section_label;
-extern char *hot_section_label;
-extern char *hot_section_end_label;
-extern char *cold_section_end_label;
-extern char *unlikely_text_section_name;
extern const char *last_text_section_name;
extern enum in_section last_text_section;
extern bool first_function_block_is_cold;
timevar_push (TV_SYMOUT);
(*debug_hooks->function_decl) (current_function_decl);
- if (unlikely_text_section_name)
- {
- free (unlikely_text_section_name);
- unlikely_text_section_name = NULL;
- }
timevar_pop (TV_SYMOUT);
ggc_collect ();
bool first_function_block_is_cold;
-/* The following global variable indicates the label name to be put at
- the start of the first cold section within each function, when
- partitioning basic blocks into hot and cold sections. Used for
- debug info. */
-
-char *unlikely_section_label;
-
-/* The following global variable indicates the label name to be put at
- the start of the first hot section within each function, when
- partitioning basic blocks into hot and cold sections. Used for
- debug info. */
-
-char *hot_section_label;
-
-/* The following global variable indicates the label name to be put at
- the end of the last hot section within each function, when
- partitioning basic blocks into hot and cold sections. Used for
- debug info. */
-
-char *hot_section_end_label;
-
-/* The following global variable indicates the label name to be put at
- the end of the last cold section within each function, when
- partitioning basic blocks into hot and cold sections. Used for
- debug info.*/
-
-char *cold_section_end_label;
-
-/* The following global variable indicates the section name to be used
- for the current cold section, when partitiong hot and cold basic
- blocks into separate sections. */
-
-char *unlikely_text_section_name;
-
/* We give all constants their own alias set. Perhaps redundant with
MEM_READONLY_P, but pre-dates it. */
static void
initialize_cold_section_name (void)
{
- const char* name;
+ const char *name;
+ const char *stripped_name;
+ char *buffer;
int len;
+ struct function *cfun;
- if (! unlikely_text_section_name)
+ if (current_function_decl)
{
- if (DECL_SECTION_NAME (current_function_decl)
- && (strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME
- (current_function_decl)),
- HOT_TEXT_SECTION_NAME) != 0)
- && (strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME
- (current_function_decl)),
- UNLIKELY_EXECUTED_TEXT_SECTION_NAME) != 0))
+ cfun = DECL_STRUCT_FUNCTION (current_function_decl);
+ if (!cfun->unlikely_text_section_name)
{
- name = TREE_STRING_POINTER (DECL_SECTION_NAME
- (current_function_decl));
- len = strlen (name);
- unlikely_text_section_name = xmalloc (len + 10);
- sprintf (unlikely_text_section_name, "%s%s", name, "_unlikely");
+ if (flag_function_sections
+ && DECL_SECTION_NAME (current_function_decl))
+ {
+ name = xstrdup (TREE_STRING_POINTER (DECL_SECTION_NAME
+ (current_function_decl)));
+ stripped_name = targetm.strip_name_encoding (name);
+ len = strlen (stripped_name);
+ buffer = (char *) xmalloc (len + 10);
+ sprintf (buffer, "%s%s", stripped_name, "_unlikely");
+ cfun->unlikely_text_section_name = ggc_strdup (buffer);
+ free (buffer);
+ free ((char *) name);
+ }
+ else
+ cfun->unlikely_text_section_name =
+ UNLIKELY_EXECUTED_TEXT_SECTION_NAME;
}
- else
- unlikely_text_section_name =
- xstrdup (UNLIKELY_EXECUTED_TEXT_SECTION_NAME);
}
+ else
+ internal_error
+ ("initialize_cold_section_name called without valid current_function_decl.");
}
/* Tell assembler to switch to text section. */
void
unlikely_text_section (void)
{
- if (! unlikely_text_section_name)
- initialize_cold_section_name ();
+ if (current_function_decl)
+ {
+ struct function *cfun = DECL_STRUCT_FUNCTION (current_function_decl);
- if ((in_section != in_unlikely_executed_text)
- && (in_section != in_named
- || strcmp (in_named_name, unlikely_text_section_name) != 0))
+ if (!cfun->unlikely_text_section_name)
+ initialize_cold_section_name ();
+
+ if ((in_section != in_unlikely_executed_text)
+ && (in_section != in_named
+ || strcmp (in_named_name, cfun->unlikely_text_section_name) != 0))
+ {
+ named_section (NULL_TREE, cfun->unlikely_text_section_name, 0);
+ in_section = in_unlikely_executed_text;
+ last_text_section = in_unlikely_executed_text;
+ }
+ }
+ else
{
- named_section (NULL_TREE, unlikely_text_section_name, 0);
+ named_section (NULL_TREE, UNLIKELY_EXECUTED_TEXT_SECTION_NAME, 0);
in_section = in_unlikely_executed_text;
last_text_section = in_unlikely_executed_text;
}
in_unlikely_text_section (void)
{
bool ret_val;
+ struct function *cfun;
- ret_val = ((in_section == in_unlikely_executed_text)
- || (in_section == in_named
- && unlikely_text_section_name
- && strcmp (in_named_name, unlikely_text_section_name) == 0));
+ if (current_function_decl)
+ {
+ cfun = DECL_STRUCT_FUNCTION (current_function_decl);
+
+ ret_val = ((in_section == in_unlikely_executed_text)
+ || (in_section == in_named
+ && cfun->unlikely_text_section_name
+ && strcmp (in_named_name,
+ cfun->unlikely_text_section_name) == 0));
+ }
+ else
+ {
+ ret_val = ((in_section == in_unlikely_executed_text)
+ || (in_section == in_named
+ && strcmp (in_named_name,
+ UNLIKELY_EXECUTED_TEXT_SECTION_NAME) == 0));
+ }
return ret_val;
}
name = TREE_STRING_POINTER (DECL_SECTION_NAME (decl));
if (strcmp (name, UNLIKELY_EXECUTED_TEXT_SECTION_NAME) == 0
- && !unlikely_text_section_name)
- unlikely_text_section_name =
- xstrdup (UNLIKELY_EXECUTED_TEXT_SECTION_NAME);
+ && current_function_decl
+ && !(DECL_STRUCT_FUNCTION (current_function_decl))->unlikely_text_section_name)
+ {
+ struct function *cfun = DECL_STRUCT_FUNCTION (current_function_decl);
+ cfun->unlikely_text_section_name = UNLIKELY_EXECUTED_TEXT_SECTION_NAME;
+ }
flags = targetm.section_type_flags (decl, name, reloc);
void
function_section (tree decl)
{
- bool unlikely = false;
+ int reloc = 0;
if (first_function_block_is_cold)
- unlikely = true;
+ reloc = 1;
#ifdef USE_SELECT_SECTION_FOR_FUNCTIONS
- targetm.asm_out.select_section (decl, unlikely, DECL_ALIGN (decl));
+ targetm.asm_out.select_section (decl, reloc, DECL_ALIGN (decl));
#else
if (decl != NULL_TREE
- && DECL_SECTION_NAME (decl) != NULL_TREE)
+ && DECL_SECTION_NAME (decl) != NULL_TREE
+ && targetm.have_named_sections)
named_section (decl, (char *) 0, 0);
else
text_section ();
current_function_section (tree decl)
{
#ifdef USE_SELECT_SECTION_FOR_FUNCTIONS
- bool unlikely = (in_unlikely_text_section ()
- || (last_text_section == in_unlikely_executed_text));
-
- targetm.asm_out.select_section (decl, unlikely, DECL_ALIGN (decl));
+ int reloc = 0;
+
+ if (in_unlikely_text_section ()
+ || last_text_section == in_unlikely_executed_text)
+ reloc = 1;
+
+ targetm.asm_out.select_section (decl, reloc, DECL_ALIGN (decl));
#else
if (last_text_section == in_unlikely_executed_text)
unlikely_text_section ();
else if (last_text_section == in_text)
text_section ();
- else if (last_text_section == in_named)
+ else if (last_text_section == in_named
+ && targetm.have_named_sections)
named_section (NULL_TREE, last_text_section_name, 0);
else
function_section (decl);
assemble_start_function (tree decl, const char *fnname)
{
int align;
+ char tmp_label[100];
bool hot_label_written = false;
+ struct function *cfun = DECL_STRUCT_FUNCTION (decl);
- unlikely_text_section_name = NULL;
-
+ cfun->unlikely_text_section_name = NULL;
+
first_function_block_is_cold = false;
- hot_section_label = reconcat (hot_section_label, fnname, ".hot_section", NULL);
- unlikely_section_label = reconcat (unlikely_section_label,
- fnname, ".unlikely_section", NULL);
- hot_section_end_label = reconcat (hot_section_end_label,
- fnname, ".end", NULL);
- cold_section_end_label = reconcat (cold_section_end_label,
- fnname, ".end.cold", NULL);
+ if (flag_reorder_blocks_and_partition)
+ {
+ ASM_GENERATE_INTERNAL_LABEL (tmp_label, "HOTB", const_labelno);
+ cfun->hot_section_label = ggc_strdup (tmp_label);
+ ASM_GENERATE_INTERNAL_LABEL (tmp_label, "COLDB", const_labelno);
+ cfun->cold_section_label = ggc_strdup (tmp_label);
+ ASM_GENERATE_INTERNAL_LABEL (tmp_label, "HOTE", const_labelno);
+ cfun->hot_section_end_label = ggc_strdup (tmp_label);
+ ASM_GENERATE_INTERNAL_LABEL (tmp_label, "COLDE", const_labelno);
+ cfun->cold_section_end_label = ggc_strdup (tmp_label);
+ const_labelno++;
+ }
+ else
+ {
+ cfun->hot_section_label = NULL;
+ cfun->cold_section_label = NULL;
+ cfun->hot_section_end_label = NULL;
+ cfun->cold_section_end_label = NULL;
+ }
/* The following code does not need preprocessing in the assembler. */
{
unlikely_text_section ();
assemble_align (FUNCTION_BOUNDARY);
- ASM_OUTPUT_LABEL (asm_out_file, unlikely_section_label);
+ ASM_OUTPUT_LABEL (asm_out_file, cfun->cold_section_label);
if (BB_PARTITION (ENTRY_BLOCK_PTR->next_bb) == BB_COLD_PARTITION)
{
/* Since the function starts with a cold section, we need to
section label. */
text_section ();
assemble_align (FUNCTION_BOUNDARY);
- ASM_OUTPUT_LABEL (asm_out_file, hot_section_label);
+ ASM_OUTPUT_LABEL (asm_out_file, cfun->hot_section_label);
hot_label_written = true;
first_function_block_is_cold = true;
}
s[i] = (TREE_STRING_POINTER (DECL_SECTION_NAME (decl)))[i];
s[len] = '\0';
- if (unlikely_text_section_name
- && (strcmp (s, unlikely_text_section_name) == 0))
+ if (cfun->unlikely_text_section_name
+ && (strcmp (s, cfun->unlikely_text_section_name) == 0))
first_function_block_is_cold = true;
}
/* Switch to the correct text section for the start of the function. */
function_section (decl);
- if (!hot_label_written)
- ASM_OUTPUT_LABEL (asm_out_file, hot_section_label);
+ if (flag_reorder_blocks_and_partition && !hot_label_written)
+ ASM_OUTPUT_LABEL (asm_out_file, cfun->hot_section_label);
/* Tell assembler to move to target machine's alignment for functions. */
align = floor_log2 (FUNCTION_BOUNDARY / BITS_PER_UNIT);
void
assemble_end_function (tree decl, const char *fnname)
{
- enum in_section save_text_section;
#ifdef ASM_DECLARE_FUNCTION_SIZE
ASM_DECLARE_FUNCTION_SIZE (asm_out_file, fnname, decl);
#endif
}
/* Output labels for end of hot/cold text sections (to be used by
debug info.) */
- save_text_section = in_section;
- unlikely_text_section ();
- ASM_OUTPUT_LABEL (asm_out_file, cold_section_end_label);
- text_section ();
- ASM_OUTPUT_LABEL (asm_out_file, hot_section_end_label);
- if (save_text_section == in_unlikely_executed_text)
- unlikely_text_section ();
+ if (flag_reorder_blocks_and_partition)
+ {
+ enum in_section save_text_section;
+ struct function *cfun = DECL_STRUCT_FUNCTION (decl);
+
+ save_text_section = in_section;
+ unlikely_text_section ();
+ ASM_OUTPUT_LABEL (asm_out_file, cfun->cold_section_end_label);
+ text_section ();
+ ASM_OUTPUT_LABEL (asm_out_file, cfun->hot_section_end_label);
+ if (save_text_section == in_unlikely_executed_text)
+ unlikely_text_section ();
+ }
}
\f
/* Assemble code to leave SIZE bytes of zeros. */
int shlib)
{
unsigned int flags;
+ struct function *cfun = NULL;
+
+ if (current_function_decl)
+ cfun = DECL_STRUCT_FUNCTION (current_function_decl);
if (decl && TREE_CODE (decl) == FUNCTION_DECL)
flags = SECTION_CODE;
else if (decl && decl_readonly_section_1 (decl, reloc, shlib))
flags = 0;
- else if (unlikely_text_section_name
- && strcmp (name, unlikely_text_section_name) == 0)
+ else if (current_function_decl
+ && cfun->unlikely_text_section_name
+ && strcmp (name, cfun->unlikely_text_section_name) == 0)
flags = SECTION_CODE;
+ else if (!decl
+ && !current_function_decl
+ && strcmp (name, UNLIKELY_EXECUTED_TEXT_SECTION_NAME) == 0)
+ flags = SECTION_CODE;
else
flags = SECTION_WRITE;
projects / thirdparty / gcc.git / commitdiff
