/* Convert RTL to assembler code and output it, for GNU compiler.
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
#include "dwarf2out.h"
#endif
+#ifdef DBX_DEBUGGING_INFO
+#include "dbxout.h"
+#endif
+
/* If we aren't using cc0, CC_STATUS_INIT shouldn't exist. So define a
null default for it to save conditionalization later. */
#ifndef CC_STATUS_INIT
#define HAVE_READONLY_DATA_SECTION 0
#endif
+/* Bitflags used by final_scan_insn. */
+#define SEEN_BB 1
+#define SEEN_NOTE 2
+#define SEEN_EMITTED 4
+
/* Last insn processed by final_scan_insn. */
static rtx debug_insn;
rtx current_output_insn;
char regs_ever_live[FIRST_PSEUDO_REGISTER];
+/* Like regs_ever_live, but 1 if a reg is set or clobbered from an asm.
+ Unlike regs_ever_live, elements of this array corresponding to
+ eliminable regs like the frame pointer are set if an asm sets them. */
+
+char regs_asm_clobbered[FIRST_PSEUDO_REGISTER];
+
/* Nonzero means current function must be given a frame pointer.
- Set in stmt.c if anything is allocated on the stack there.
- Set in reload1.c if anything is allocated on the stack there. */
+ Initialized in function.c to 0. Set only in reload1.c as per
+ the needs of the function. */
int frame_pointer_needed;
static int dialect_number;
#endif
-/* Indexed by line number, nonzero if there is a note for that line. */
-
-static char *line_note_exists;
-
#ifdef HAVE_conditional_execution
/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
rtx current_insn_predicate;
#endif
#ifdef HAVE_ATTR_length
-static int asm_insn_count PARAMS ((rtx));
-#endif
-static void profile_function PARAMS ((FILE *));
-static void profile_after_prologue PARAMS ((FILE *));
-static void notice_source_line PARAMS ((rtx));
-static rtx walk_alter_subreg PARAMS ((rtx *));
-static void output_asm_name PARAMS ((void));
-static void output_alternate_entry_point PARAMS ((FILE *, rtx));
-static tree get_mem_expr_from_op PARAMS ((rtx, int *));
-static void output_asm_operand_names PARAMS ((rtx *, int *, int));
-static void output_operand PARAMS ((rtx, int));
+static int asm_insn_count (rtx);
+#endif
+static void profile_function (FILE *);
+static void profile_after_prologue (FILE *);
+static bool notice_source_line (rtx);
+static rtx walk_alter_subreg (rtx *);
+static void output_asm_name (void);
+static void output_alternate_entry_point (FILE *, rtx);
+static tree get_mem_expr_from_op (rtx, int *);
+static void output_asm_operand_names (rtx *, int *, int);
+static void output_operand (rtx, int);
#ifdef LEAF_REGISTERS
-static void leaf_renumber_regs PARAMS ((rtx));
+static void leaf_renumber_regs (rtx);
#endif
#ifdef HAVE_cc0
-static int alter_cond PARAMS ((rtx));
+static int alter_cond (rtx);
#endif
#ifndef ADDR_VEC_ALIGN
-static int final_addr_vec_align PARAMS ((rtx));
+static int final_addr_vec_align (rtx);
#endif
#ifdef HAVE_ATTR_length
-static int align_fuzz PARAMS ((rtx, rtx, int, unsigned));
+static int align_fuzz (rtx, rtx, int, unsigned);
#endif
\f
/* Initialize data in final at the beginning of a compilation. */
void
-init_final (filename)
- const char *filename ATTRIBUTE_UNUSED;
+init_final (const char *filename ATTRIBUTE_UNUSED)
{
app_on = 0;
final_sequence = 0;
If not overridden for epilogue code, then the function body itself
contains return instructions wherever needed. */
void
-default_function_pro_epilogue (file, size)
- FILE *file ATTRIBUTE_UNUSED;
- HOST_WIDE_INT size ATTRIBUTE_UNUSED;
+default_function_pro_epilogue (FILE *file ATTRIBUTE_UNUSED,
+ HOST_WIDE_INT size ATTRIBUTE_UNUSED)
{
}
/* Default target hook that outputs nothing to a stream. */
void
-no_asm_to_stream (file)
- FILE *file ATTRIBUTE_UNUSED;
+no_asm_to_stream (FILE *file ATTRIBUTE_UNUSED)
{
}
Used before the output from an `asm' statement. */
void
-app_enable ()
+app_enable (void)
{
if (! app_on)
{
Called from varasm.c before most kinds of output. */
void
-app_disable ()
+app_disable (void)
{
if (app_on)
{
#ifdef DELAY_SLOTS
int
-dbr_sequence_length ()
+dbr_sequence_length (void)
{
if (final_sequence != 0)
return XVECLEN (final_sequence, 0) - 1;
/* Indicate that branch shortening hasn't yet been done. */
void
-init_insn_lengths ()
+init_insn_lengths (void)
{
if (uid_shuid)
{
get its actual length. Otherwise, get its maximum length. */
int
-get_attr_length (insn)
- rtx insn ATTRIBUTE_UNUSED;
+get_attr_length (rtx insn ATTRIBUTE_UNUSED)
{
#ifdef HAVE_ATTR_length
rtx body;
#ifndef ADDR_VEC_ALIGN
static int
-final_addr_vec_align (addr_vec)
- rtx addr_vec;
+final_addr_vec_align (rtx addr_vec)
{
int align = GET_MODE_SIZE (GET_MODE (PATTERN (addr_vec)));
/* For the benefit of port specific code do this also as a function. */
int
-label_to_alignment (label)
- rtx label;
+label_to_alignment (rtx label)
{
return LABEL_TO_ALIGNMENT (label);
}
The return value is undefined for any other value of GROWTH. */
static int
-align_fuzz (start, end, known_align_log, growth)
- rtx start, end;
- int known_align_log;
- unsigned growth;
+align_fuzz (rtx start, rtx end, int known_align_log, unsigned int growth)
{
int uid = INSN_UID (start);
rtx align_label;
to exclude the branch size. */
int
-insn_current_reference_address (branch)
- rtx branch;
+insn_current_reference_address (rtx branch)
{
rtx dest, seq;
int seq_uid;
#endif /* HAVE_ATTR_length */
\f
void
-compute_alignments ()
+compute_alignments (void)
{
int log, max_skip, max_log;
basic_block bb;
max_labelno = max_label_num ();
min_labelno = get_first_label_num ();
- label_align = (struct label_alignment *)
- xcalloc (max_labelno - min_labelno + 1, sizeof (struct label_alignment));
+ label_align = xcalloc (max_labelno - min_labelno + 1,
+ sizeof (struct label_alignment));
/* If not optimizing or optimizing for size, don't assign any alignments. */
if (! optimize || optimize_size)
FOR_EACH_BB (bb)
{
- rtx label = bb->head;
+ rtx label = BB_HEAD (bb);
int fallthru_frequency = 0, branch_frequency = 0, has_fallthru = 0;
edge e;
/* Make a pass over all insns and compute their actual lengths by shortening
any branches of variable length if possible. */
-/* Give a default value for the lowest address in a function. */
-
-#ifndef FIRST_INSN_ADDRESS
-#define FIRST_INSN_ADDRESS 0
-#endif
-
/* shorten_branches might be called multiple times: for example, the SH
port splits out-of-range conditional branches in MACHINE_DEPENDENT_REORG.
In order to do this, it needs proper length information, which it obtains
slots. */
void
-shorten_branches (first)
- rtx first ATTRIBUTE_UNUSED;
+shorten_branches (rtx first ATTRIBUTE_UNUSED)
{
rtx insn;
int max_uid;
/* Compute maximum UID and allocate label_align / uid_shuid. */
max_uid = get_max_uid ();
- uid_shuid = (int *) xmalloc (max_uid * sizeof *uid_shuid);
+ /* Free uid_shuid before reallocating it. */
+ free (uid_shuid);
+
+ uid_shuid = xmalloc (max_uid * sizeof *uid_shuid);
if (max_labelno != max_label_num ())
{
n_labels = max_labelno - min_labelno + 1;
n_old_labels = old - min_labelno + 1;
- label_align = (struct label_alignment *) xrealloc
- (label_align, n_labels * sizeof (struct label_alignment));
+ label_align = xrealloc (label_align,
+ n_labels * sizeof (struct label_alignment));
/* Range of labels grows monotonically in the function. Abort here
means that the initialization of array got lost. */
#ifdef HAVE_ATTR_length
/* Allocate the rest of the arrays. */
- insn_lengths = (int *) xmalloc (max_uid * sizeof (*insn_lengths));
+ insn_lengths = xmalloc (max_uid * sizeof (*insn_lengths));
insn_lengths_max_uid = max_uid;
/* Syntax errors can lead to labels being outside of the main insn stream.
Initialize insn_addresses, so that we get reproducible results. */
INSN_ADDRESSES_ALLOC (max_uid);
- varying_length = (char *) xcalloc (max_uid, sizeof (char));
+ varying_length = xcalloc (max_uid, sizeof (char));
/* Initialize uid_align. We scan instructions
from end to start, and keep in align_tab[n] the last seen insn
that does an alignment of at least n+1, i.e. the successor
in the alignment chain for an insn that does / has a known
alignment of n. */
- uid_align = (rtx *) xcalloc (max_uid, sizeof *uid_align);
+ uid_align = xcalloc (max_uid, sizeof *uid_align);
for (i = MAX_CODE_ALIGN; --i >= 0;)
align_tab[i] = NULL_RTX;
#endif /* CASE_VECTOR_SHORTEN_MODE */
/* Compute initial lengths, addresses, and varying flags for each insn. */
- for (insn_current_address = FIRST_INSN_ADDRESS, insn = first;
+ for (insn_current_address = 0, insn = first;
insn != 0;
insn_current_address += insn_lengths[uid], insn = NEXT_INSN (insn))
{
{
something_changed = 0;
insn_current_align = MAX_CODE_ALIGN - 1;
- for (insn_current_address = FIRST_INSN_ADDRESS, insn = first;
+ for (insn_current_address = 0, insn = first;
insn != 0;
insn = NEXT_INSN (insn))
{
This is used to compute its length. */
static int
-asm_insn_count (body)
- rtx body;
+asm_insn_count (rtx body)
{
const char *template;
int count = 1;
test and compare insns. */
void
-final_start_function (first, file, optimize)
- rtx first;
- FILE *file;
- int optimize ATTRIBUTE_UNUSED;
+final_start_function (rtx first ATTRIBUTE_UNUSED, FILE *file,
+ int optimize ATTRIBUTE_UNUSED)
{
block_depth = 0;
this_is_asm_operands = 0;
-#ifdef NON_SAVING_SETJMP
- /* A function that calls setjmp should save and restore all the
- call-saved registers on a system where longjmp clobbers them. */
- if (NON_SAVING_SETJMP && current_function_calls_setjmp)
- {
- int i;
-
- for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
- if (!call_used_regs[i])
- regs_ever_live[i] = 1;
- }
-#endif
+ last_filename = locator_file (prologue_locator);
+ last_linenum = locator_line (prologue_locator);
- if (NOTE_LINE_NUMBER (first) != NOTE_INSN_DELETED)
- notice_source_line (first);
high_block_linenum = high_function_linenum = last_linenum;
(*debug_hooks->begin_prologue) (last_linenum, last_filename);
if (write_symbols)
{
remove_unnecessary_notes ();
- scope_to_insns_finalize ();
+ reemit_insn_block_notes ();
number_blocks (current_function_decl);
/* We never actually put out begin/end notes for the top-level
block in the function. But, conceptually, that block is
}
/* First output the function prologue: code to set up the stack frame. */
- (*targetm.asm_out.function_prologue) (file, get_frame_size ());
+ targetm.asm_out.function_prologue (file, get_frame_size ());
/* If the machine represents the prologue as RTL, the profiling code must
be emitted when NOTE_INSN_PROLOGUE_END is scanned. */
}
static void
-profile_after_prologue (file)
- FILE *file ATTRIBUTE_UNUSED;
+profile_after_prologue (FILE *file ATTRIBUTE_UNUSED)
{
#ifndef PROFILE_BEFORE_PROLOGUE
if (current_function_profile)
}
static void
-profile_function (file)
- FILE *file ATTRIBUTE_UNUSED;
+profile_function (FILE *file ATTRIBUTE_UNUSED)
{
#ifndef NO_PROFILE_COUNTERS
- int align = MIN (BIGGEST_ALIGNMENT, LONG_TYPE_SIZE);
+# define NO_PROFILE_COUNTERS 0
#endif
#if defined(ASM_OUTPUT_REG_PUSH)
-#if defined(STRUCT_VALUE_INCOMING_REGNUM) || defined(STRUCT_VALUE_REGNUM)
int sval = current_function_returns_struct;
-#endif
+ rtx svrtx = targetm.calls.struct_value_rtx (TREE_TYPE (current_function_decl), 1);
#if defined(STATIC_CHAIN_INCOMING_REGNUM) || defined(STATIC_CHAIN_REGNUM)
- int cxt = current_function_needs_context;
+ int cxt = cfun->static_chain_decl != NULL;
#endif
#endif /* ASM_OUTPUT_REG_PUSH */
-#ifndef NO_PROFILE_COUNTERS
- data_section ();
- ASM_OUTPUT_ALIGN (file, floor_log2 (align / BITS_PER_UNIT));
- (*targetm.asm_out.internal_label) (file, "LP", current_function_funcdef_no);
- assemble_integer (const0_rtx, LONG_TYPE_SIZE / BITS_PER_UNIT, align, 1);
-#endif
+ if (! NO_PROFILE_COUNTERS)
+ {
+ int align = MIN (BIGGEST_ALIGNMENT, LONG_TYPE_SIZE);
+ data_section ();
+ ASM_OUTPUT_ALIGN (file, floor_log2 (align / BITS_PER_UNIT));
+ targetm.asm_out.internal_label (file, "LP", current_function_funcdef_no);
+ assemble_integer (const0_rtx, LONG_TYPE_SIZE / BITS_PER_UNIT, align, 1);
+ }
function_section (current_function_decl);
-#if defined(STRUCT_VALUE_INCOMING_REGNUM) && defined(ASM_OUTPUT_REG_PUSH)
- if (sval)
- ASM_OUTPUT_REG_PUSH (file, STRUCT_VALUE_INCOMING_REGNUM);
-#else
-#if defined(STRUCT_VALUE_REGNUM) && defined(ASM_OUTPUT_REG_PUSH)
- if (sval)
- {
- ASM_OUTPUT_REG_PUSH (file, STRUCT_VALUE_REGNUM);
- }
-#endif
+#if defined(ASM_OUTPUT_REG_PUSH)
+ if (sval && svrtx != NULL_RTX && REG_P (svrtx))
+ ASM_OUTPUT_REG_PUSH (file, REGNO (svrtx));
#endif
#if defined(STATIC_CHAIN_INCOMING_REGNUM) && defined(ASM_OUTPUT_REG_PUSH)
#endif
#endif
-#if defined(STRUCT_VALUE_INCOMING_REGNUM) && defined(ASM_OUTPUT_REG_PUSH)
- if (sval)
- ASM_OUTPUT_REG_POP (file, STRUCT_VALUE_INCOMING_REGNUM);
-#else
-#if defined(STRUCT_VALUE_REGNUM) && defined(ASM_OUTPUT_REG_PUSH)
- if (sval)
- {
- ASM_OUTPUT_REG_POP (file, STRUCT_VALUE_REGNUM);
- }
-#endif
+#if defined(ASM_OUTPUT_REG_PUSH)
+ if (sval && svrtx != NULL_RTX && REG_P (svrtx))
+ ASM_OUTPUT_REG_POP (file, REGNO (svrtx));
#endif
}
even though not all of them are needed. */
void
-final_end_function ()
+final_end_function (void)
{
app_disable ();
/* Finally, output the function epilogue:
code to restore the stack frame and return to the caller. */
- (*targetm.asm_out.function_epilogue) (asm_out_file, get_frame_size ());
+ targetm.asm_out.function_epilogue (asm_out_file, get_frame_size ());
/* And debug output. */
(*debug_hooks->end_epilogue) (last_linenum, last_filename);
Prescanning is done only on certain machines. */
void
-final (first, file, optimize, prescan)
- rtx first;
- FILE *file;
- int optimize;
- int prescan;
+final (rtx first, FILE *file, int optimize, int prescan)
{
rtx insn;
- int max_line = 0;
int max_uid = 0;
+ int seen = 0;
last_ignored_compare = 0;
- /* Make a map indicating which line numbers appear in this function.
- When producing SDB debugging info, delete troublesome line number
+#ifdef SDB_DEBUGGING_INFO
+ /* When producing SDB debugging info, delete troublesome line number
notes from inlined functions in other files as well as duplicate
line number notes. */
-#ifdef SDB_DEBUGGING_INFO
if (write_symbols == SDB_DEBUG)
{
rtx last = 0;
for (insn = first; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) == NOTE && NOTE_LINE_NUMBER (insn) > 0)
{
- if ((RTX_INTEGRATED_P (insn)
- && strcmp (NOTE_SOURCE_FILE (insn), main_input_filename) != 0)
- || (last != 0
- && NOTE_LINE_NUMBER (insn) == NOTE_LINE_NUMBER (last)
- && NOTE_SOURCE_FILE (insn) == NOTE_SOURCE_FILE (last)))
+ if (last != 0
+#ifdef USE_MAPPED_LOCATION
+ && NOTE_SOURCE_LOCATION (insn) == NOTE_SOURCE_LOCATION (last)
+#else
+ && NOTE_LINE_NUMBER (insn) == NOTE_LINE_NUMBER (last)
+ && NOTE_SOURCE_FILE (insn) == NOTE_SOURCE_FILE (last)
+#endif
+ )
{
delete_insn (insn); /* Use delete_note. */
continue;
}
last = insn;
- if (NOTE_LINE_NUMBER (insn) > max_line)
- max_line = NOTE_LINE_NUMBER (insn);
}
}
- else
#endif
- {
- for (insn = first; insn; insn = NEXT_INSN (insn))
- if (GET_CODE (insn) == NOTE && NOTE_LINE_NUMBER (insn) > max_line)
- max_line = NOTE_LINE_NUMBER (insn);
- }
-
- line_note_exists = (char *) xcalloc (max_line + 1, sizeof (char));
for (insn = first; insn; insn = NEXT_INSN (insn))
{
- if (INSN_UID (insn) > max_uid) /* find largest UID */
+ if (INSN_UID (insn) > max_uid) /* Find largest UID. */
max_uid = INSN_UID (insn);
- if (GET_CODE (insn) == NOTE && NOTE_LINE_NUMBER (insn) > 0)
- line_note_exists[NOTE_LINE_NUMBER (insn)] = 1;
#ifdef HAVE_cc0
/* If CC tracking across branches is enabled, record the insn which
jumps to each branch only reached from one place. */
insn_current_address = INSN_ADDRESSES (INSN_UID (insn));
#endif /* HAVE_ATTR_length */
- insn = final_scan_insn (insn, file, optimize, prescan, 0);
+ insn = final_scan_insn (insn, file, optimize, prescan, 0, &seen);
}
-
- free (line_note_exists);
- line_note_exists = NULL;
}
\f
const char *
-get_insn_template (code, insn)
- int code;
- rtx insn;
+get_insn_template (int code, rtx insn)
{
- const void *output = insn_data[code].output;
switch (insn_data[code].output_format)
{
case INSN_OUTPUT_FORMAT_SINGLE:
- return (const char *) output;
+ return insn_data[code].output.single;
case INSN_OUTPUT_FORMAT_MULTI:
- return ((const char *const *) output)[which_alternative];
+ return insn_data[code].output.multi[which_alternative];
case INSN_OUTPUT_FORMAT_FUNCTION:
if (insn == NULL)
abort ();
- return (*(insn_output_fn) output) (recog_data.operand, insn);
+ return (*insn_data[code].output.function) (recog_data.operand, insn);
default:
abort ();
The case fall-through in this function is intentional. */
static void
-output_alternate_entry_point (file, insn)
- FILE *file;
- rtx insn;
+output_alternate_entry_point (FILE *file, rtx insn)
{
const char *name = LABEL_NAME (insn);
ASM_WEAKEN_LABEL (file, name);
#endif
case LABEL_GLOBAL_ENTRY:
- (*targetm.asm_out.globalize_label) (file, name);
+ targetm.asm_out.globalize_label (file, name);
case LABEL_STATIC_ENTRY:
#ifdef ASM_OUTPUT_TYPE_DIRECTIVE
ASM_OUTPUT_TYPE_DIRECTIVE (file, name, "function");
}
}
+/* Return boolean indicating if there is a NOTE_INSN_UNLIKELY_EXECUTED_CODE
+ note in the instruction chain (going forward) between the current
+ instruction, and the next 'executable' instruction. */
+
+bool
+scan_ahead_for_unlikely_executed_note (rtx insn)
+{
+ rtx temp;
+ int bb_note_count = 0;
+
+ for (temp = insn; temp; temp = NEXT_INSN (temp))
+ {
+ if (GET_CODE (temp) == NOTE
+ && NOTE_LINE_NUMBER (temp) == NOTE_INSN_UNLIKELY_EXECUTED_CODE)
+ return true;
+ if (GET_CODE (temp) == NOTE
+ && NOTE_LINE_NUMBER (temp) == NOTE_INSN_BASIC_BLOCK)
+ {
+ bb_note_count++;
+ if (bb_note_count > 1)
+ return false;
+ }
+ if (INSN_P (temp))
+ return false;
+ }
+
+ return false;
+}
+
/* The final scan for one insn, INSN.
Args are same as in `final', except that INSN
is the insn being scanned.
Value returned is the next insn to be scanned.
NOPEEPHOLES is the flag to disallow peephole processing (currently
- used for within delayed branch sequence output). */
+ used for within delayed branch sequence output).
+
+ SEEN is used to track the end of the prologue, for emitting
+ debug information. We force the emission of a line note after
+ both NOTE_INSN_PROLOGUE_END and NOTE_INSN_FUNCTION_BEG, or
+ at the beginning of the second basic block, whichever comes
+ first. */
rtx
-final_scan_insn (insn, file, optimize, prescan, nopeepholes)
- rtx insn;
- FILE *file;
- int optimize ATTRIBUTE_UNUSED;
- int prescan;
- int nopeepholes ATTRIBUTE_UNUSED;
+final_scan_insn (rtx insn, FILE *file, int optimize ATTRIBUTE_UNUSED,
+ int prescan, int nopeepholes ATTRIBUTE_UNUSED,
+ int *seen)
{
#ifdef HAVE_cc0
rtx set;
case NOTE_INSN_EXPECTED_VALUE:
break;
+ case NOTE_INSN_UNLIKELY_EXECUTED_CODE:
+
+ /* The presence of this note indicates that this basic block
+ belongs in the "cold" section of the .o file. If we are
+ not already writing to the cold section we need to change
+ to it. */
+
+ unlikely_text_section ();
+ break;
+
case NOTE_INSN_BASIC_BLOCK:
+
+ /* If we are performing the optimization that partitions
+ basic blocks into hot & cold sections of the .o file,
+ then at the start of each new basic block, before
+ beginning to write code for the basic block, we need to
+ check to see whether the basic block belongs in the hot
+ or cold section of the .o file, and change the section we
+ are writing to appropriately. */
+
+ if (flag_reorder_blocks_and_partition
+ && in_unlikely_text_section()
+ && !scan_ahead_for_unlikely_executed_note (insn))
+ text_section ();
+
#ifdef IA64_UNWIND_INFO
IA64_UNWIND_EMIT (asm_out_file, insn);
#endif
if (flag_debug_asm)
fprintf (asm_out_file, "\t%s basic block %d\n",
ASM_COMMENT_START, NOTE_BASIC_BLOCK (insn)->index);
+
+ if ((*seen & (SEEN_EMITTED | SEEN_BB)) == SEEN_BB)
+ {
+ *seen |= SEEN_EMITTED;
+ last_filename = NULL;
+ }
+ else
+ *seen |= SEEN_BB;
+
break;
case NOTE_INSN_EH_REGION_BEG:
break;
case NOTE_INSN_PROLOGUE_END:
- (*targetm.asm_out.function_end_prologue) (file);
+ targetm.asm_out.function_end_prologue (file);
profile_after_prologue (file);
+
+ if ((*seen & (SEEN_EMITTED | SEEN_NOTE)) == SEEN_NOTE)
+ {
+ *seen |= SEEN_EMITTED;
+ last_filename = NULL;
+ }
+ else
+ *seen |= SEEN_NOTE;
+
break;
case NOTE_INSN_EPILOGUE_BEG:
- (*targetm.asm_out.function_begin_epilogue) (file);
+ targetm.asm_out.function_begin_epilogue (file);
break;
case NOTE_INSN_FUNCTION_BEG:
app_disable ();
(*debug_hooks->end_prologue) (last_linenum, last_filename);
+
+ if ((*seen & (SEEN_EMITTED | SEEN_NOTE)) == SEEN_NOTE)
+ {
+ *seen |= SEEN_EMITTED;
+ last_filename = NULL;
+ }
+ else
+ *seen |= SEEN_NOTE;
+
break;
case NOTE_INSN_BLOCK_BEG:
ASM_OUTPUT_DEBUG_LABEL (file, "L", CODE_LABEL_NUMBER (insn));
break;
+ case NOTE_INSN_VAR_LOCATION:
+ (*debug_hooks->var_location) (insn);
+ break;
+
case 0:
break;
default:
if (NOTE_LINE_NUMBER (insn) <= 0)
abort ();
-
- /* This note is a line-number. */
- {
- rtx note;
- int note_after = 0;
-
- /* If there is anything real after this note, output it.
- If another line note follows, omit this one. */
- for (note = NEXT_INSN (insn); note; note = NEXT_INSN (note))
- {
- if (GET_CODE (note) != NOTE && GET_CODE (note) != CODE_LABEL)
- break;
-
- /* These types of notes can be significant
- so make sure the preceding line number stays. */
- else if (GET_CODE (note) == NOTE
- && (NOTE_LINE_NUMBER (note) == NOTE_INSN_BLOCK_BEG
- || NOTE_LINE_NUMBER (note) == NOTE_INSN_BLOCK_END
- || NOTE_LINE_NUMBER (note) == NOTE_INSN_FUNCTION_BEG))
- break;
- else if (GET_CODE (note) == NOTE && NOTE_LINE_NUMBER (note) > 0)
- {
- /* Another line note follows; we can delete this note
- if no intervening line numbers have notes elsewhere. */
- int num;
- for (num = NOTE_LINE_NUMBER (insn) + 1;
- num < NOTE_LINE_NUMBER (note);
- num++)
- if (line_note_exists[num])
- break;
-
- if (num >= NOTE_LINE_NUMBER (note))
- note_after = 1;
- break;
- }
- }
-
- /* Output this line note if it is the first or the last line
- note in a row. */
- if (!note_after)
- {
- notice_source_line (insn);
- (*debug_hooks->source_line) (last_linenum, last_filename);
- }
- }
break;
}
break;
if (prescan > 0)
break;
-#ifdef FINAL_PRESCAN_LABEL
- FINAL_PRESCAN_INSN (insn, NULL, 0);
-#endif
-
if (LABEL_NAME (insn))
(*debug_hooks->label) (insn);
+ /* If we are doing the optimization that partitions hot & cold
+ basic blocks into separate sections of the .o file, we need
+ to ensure the jump table ends up in the correct section... */
+
+ if (flag_reorder_blocks_and_partition)
+ {
+ rtx tmp_table, tmp_label;
+ if (GET_CODE (insn) == CODE_LABEL
+ && tablejump_p (NEXT_INSN (insn), &tmp_label, &tmp_table))
+ {
+ /* Do nothing; Do NOT change the current section. */
+ }
+ else if (scan_ahead_for_unlikely_executed_note (insn))
+ unlikely_text_section ();
+ else
+ {
+ if (in_unlikely_text_section ())
+ text_section ();
+ }
+ }
+
if (app_on)
{
fputs (ASM_APP_OFF, file);
ASM_OUTPUT_CASE_LABEL (file, "L", CODE_LABEL_NUMBER (insn),
NEXT_INSN (insn));
#else
- (*targetm.asm_out.internal_label) (file, "L", CODE_LABEL_NUMBER (insn));
+ targetm.asm_out.internal_label (file, "L", CODE_LABEL_NUMBER (insn));
#endif
#endif
break;
if (LABEL_ALT_ENTRY_P (insn))
output_alternate_entry_point (file, insn);
else
- (*targetm.asm_out.internal_label) (file, "L", CODE_LABEL_NUMBER (insn));
+ targetm.asm_out.internal_label (file, "L", CODE_LABEL_NUMBER (insn));
break;
default:
/* An INSN, JUMP_INSN or CALL_INSN.
First check for special kinds that recog doesn't recognize. */
- if (GET_CODE (body) == USE /* These are just declarations */
+ if (GET_CODE (body) == USE /* These are just declarations. */
|| GET_CODE (body) == CLOBBER)
break;
break;
}
+ /* Output this line note if it is the first or the last line
+ note in a row. */
+ if (notice_source_line (insn))
+ {
+ (*debug_hooks->source_line) (last_linenum, last_filename);
+ }
if (GET_CODE (body) == ASM_INPUT)
{
if (asm_noperands (body) >= 0)
{
unsigned int noperands = asm_noperands (body);
- rtx *ops = (rtx *) alloca (noperands * sizeof (rtx));
+ rtx *ops = alloca (noperands * sizeof (rtx));
const char *string;
/* There's no telling what that did to the condition codes. */
insn_noperands = noperands;
this_is_asm_operands = insn;
+#ifdef FINAL_PRESCAN_INSN
+ FINAL_PRESCAN_INSN (insn, ops, insn_noperands);
+#endif
+
/* Output the insn using them. */
if (string[0])
{
thought unnecessary. If that happens, cancel this sequence
and cause that insn to be restored. */
- next = final_scan_insn (XVECEXP (body, 0, 0), file, 0, prescan, 1);
+ next = final_scan_insn (XVECEXP (body, 0, 0), file, 0, prescan, 1, seen);
if (next != XVECEXP (body, 0, 1))
{
final_sequence = 0;
/* We loop in case any instruction in a delay slot gets
split. */
do
- insn = final_scan_insn (insn, file, 0, prescan, 1);
+ insn = final_scan_insn (insn, file, 0, prescan, 1, seen);
while (insn != next);
}
#ifdef DBR_OUTPUT_SEQEND
if (optimize)
{
-#if 0
- rtx set = single_set (insn);
-#endif
-
if (set
&& GET_CODE (SET_DEST (set)) == CC0
&& insn != last_ignored_compare)
if (final_sequence == 0
&& prescan >= 0
&& GET_CODE (insn) == INSN && GET_CODE (body) == SET
- && GET_CODE (SET_SRC (body)) == REG
- && GET_CODE (SET_DEST (body)) == REG
+ && REG_P (SET_SRC (body))
+ && REG_P (SET_DEST (body))
&& REGNO (SET_SRC (body)) == REGNO (SET_DEST (body)))
break;
#endif
&& GET_CODE (body) == SET
&& SET_DEST (body) == pc_rtx
&& GET_CODE (SET_SRC (body)) == IF_THEN_ELSE
- && GET_RTX_CLASS (GET_CODE (XEXP (SET_SRC (body), 0))) == '<'
+ && COMPARISON_P (XEXP (SET_SRC (body), 0))
&& XEXP (XEXP (SET_SRC (body), 0), 0) == cc0_rtx
/* This is done during prescan; it is not done again
in final scan when prescan has been done. */
for (note = NEXT_INSN (insn); note != next;
note = NEXT_INSN (note))
- final_scan_insn (note, file, optimize, prescan, nopeepholes);
+ final_scan_insn (note, file, optimize, prescan, nopeepholes, seen);
/* In case this is prescan, put the notes
in proper position for later rescan. */
#endif
#if 0
- /* It's not at all clear why we did this and doing so interferes
- with tests we'd like to do to use REG_WAS_0 notes, so let's try
- with this out. */
+ /* It's not at all clear why we did this and doing so used to
+ interfere with tests that used REG_WAS_0 notes, which are
+ now gone, so let's try with this out. */
/* Mark this insn as having been output. */
INSN_DELETED_P (insn) = 1;
/* Emit information for vtable gc. */
note = find_reg_note (insn, REG_VTABLE_REF, NULL_RTX);
- if (note)
- assemble_vtable_entry (XEXP (XEXP (note, 0), 0),
- INTVAL (XEXP (XEXP (note, 0), 1)));
current_output_insn = debug_insn = 0;
}
/* Output debugging info to the assembler file FILE
based on the NOTE-insn INSN, assumed to be a line number. */
-static void
-notice_source_line (insn)
- rtx insn;
+static bool
+notice_source_line (rtx insn)
{
- const char *filename = NOTE_SOURCE_FILE (insn);
+ const char *filename = insn_file (insn);
+ int linenum = insn_line (insn);
- last_filename = filename;
- last_linenum = NOTE_LINE_NUMBER (insn);
- high_block_linenum = MAX (last_linenum, high_block_linenum);
- high_function_linenum = MAX (last_linenum, high_function_linenum);
+ if (filename && (filename != last_filename || last_linenum != linenum))
+ {
+ last_filename = filename;
+ last_linenum = linenum;
+ high_block_linenum = MAX (last_linenum, high_block_linenum);
+ high_function_linenum = MAX (last_linenum, high_function_linenum);
+ return true;
+ }
+ return false;
}
\f
/* For each operand in INSN, simplify (subreg (reg)) so that it refers
directly to the desired hard register. */
void
-cleanup_subreg_operands (insn)
- rtx insn;
+cleanup_subreg_operands (rtx insn)
{
int i;
extract_insn_cached (insn);
for (i = 0; i < recog_data.n_operands; i++)
{
- /* The following test cannot use recog_data.operand when tesing
+ /* The following test cannot use recog_data.operand when testing
for a SUBREG: the underlying object might have been changed
already if we are inside a match_operator expression that
matches the else clause. Instead we test the underlying
recog_data.operand[i] = alter_subreg (recog_data.operand_loc[i]);
else if (GET_CODE (recog_data.operand[i]) == PLUS
|| GET_CODE (recog_data.operand[i]) == MULT
- || GET_CODE (recog_data.operand[i]) == MEM)
+ || MEM_P (recog_data.operand[i]))
recog_data.operand[i] = walk_alter_subreg (recog_data.operand_loc[i]);
}
*recog_data.dup_loc[i] = alter_subreg (recog_data.dup_loc[i]);
else if (GET_CODE (*recog_data.dup_loc[i]) == PLUS
|| GET_CODE (*recog_data.dup_loc[i]) == MULT
- || GET_CODE (*recog_data.dup_loc[i]) == MEM)
+ || MEM_P (*recog_data.dup_loc[i]))
*recog_data.dup_loc[i] = walk_alter_subreg (recog_data.dup_loc[i]);
}
}
based on the thing it is a subreg of. */
rtx
-alter_subreg (xp)
- rtx *xp;
+alter_subreg (rtx *xp)
{
rtx x = *xp;
rtx y = SUBREG_REG (x);
/* simplify_subreg does not remove subreg from volatile references.
We are required to. */
- if (GET_CODE (y) == MEM)
+ if (MEM_P (y))
*xp = adjust_address (y, GET_MODE (x), SUBREG_BYTE (x));
else
{
if (new != 0)
*xp = new;
/* Simplify_subreg can't handle some REG cases, but we have to. */
- else if (GET_CODE (y) == REG)
+ else if (REG_P (y))
{
unsigned int regno = subreg_hard_regno (x, 1);
*xp = gen_rtx_REG_offset (y, GET_MODE (x), regno, SUBREG_BYTE (x));
/* Do alter_subreg on all the SUBREGs contained in X. */
static rtx
-walk_alter_subreg (xp)
- rtx *xp;
+walk_alter_subreg (rtx *xp)
{
rtx x = *xp;
switch (GET_CODE (x))
2 means that COND has been altered. */
static int
-alter_cond (cond)
- rtx cond;
+alter_cond (rtx cond)
{
int value = 0;
char *new_message;
const char *pfx_str;
va_list ap;
-
+
va_start (ap, msgid);
pfx_str = this_is_asm_operands ? _("invalid `asm': ") : "output_operand: ";
alternative used. */
static void
-output_asm_name ()
+output_asm_name (void)
{
if (debug_insn)
{
corresponds to the address of the object and 0 if to the object. */
static tree
-get_mem_expr_from_op (op, paddressp)
- rtx op;
- int *paddressp;
+get_mem_expr_from_op (rtx op, int *paddressp)
{
tree expr;
int inner_addressp;
*paddressp = 0;
- if (GET_CODE (op) == REG)
+ if (REG_P (op))
return REG_EXPR (op);
- else if (GET_CODE (op) != MEM)
+ else if (!MEM_P (op))
return 0;
if (MEM_EXPR (op) != 0)
&& (expr = get_mem_expr_from_op (XEXP (op, 1), &inner_addressp)))
return expr;
- while (GET_RTX_CLASS (GET_CODE (op)) == '1'
- || GET_RTX_CLASS (GET_CODE (op)) == '2')
+ while (GET_RTX_CLASS (GET_CODE (op)) == RTX_UNARY
+ || GET_RTX_CLASS (GET_CODE (op)) == RTX_BIN_ARITH)
op = XEXP (op, 0);
expr = get_mem_expr_from_op (op, &inner_addressp);
is the number of operands to write. */
static void
-output_asm_operand_names (operands, oporder, nops)
- rtx *operands;
- int *oporder;
- int nops;
+output_asm_operand_names (rtx *operands, int *oporder, int nops)
{
int wrote = 0;
int i;
of the operand, with no other punctuation. */
void
-output_asm_insn (template, operands)
- const char *template;
- rtx *operands;
+output_asm_insn (const char *template, rtx *operands)
{
const char *p;
int c;
/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
void
-output_asm_label (x)
- rtx x;
+output_asm_label (rtx x)
{
char buf[256];
by PRINT_OPERAND. */
static void
-output_operand (x, code)
- rtx x;
- int code ATTRIBUTE_UNUSED;
+output_operand (rtx x, int code ATTRIBUTE_UNUSED)
{
if (x && GET_CODE (x) == SUBREG)
x = alter_subreg (&x);
/* If X is a pseudo-register, abort now rather than writing trash to the
assembler file. */
- if (x && GET_CODE (x) == REG && REGNO (x) >= FIRST_PSEUDO_REGISTER)
+ if (x && REG_P (x) && REGNO (x) >= FIRST_PSEUDO_REGISTER)
abort ();
PRINT_OPERAND (asm_out_file, x, code);
The macro PRINT_OPERAND_ADDRESS exists just to control this function. */
void
-output_address (x)
- rtx x;
+output_address (rtx x)
{
walk_alter_subreg (&x);
PRINT_OPERAND_ADDRESS (asm_out_file, x);
that may appear in these expressions. */
void
-output_addr_const (file, x)
- FILE *file;
- rtx x;
+output_addr_const (FILE *file, rtx x)
{
char buf[256];
break;
case SYMBOL_REF:
+ if (SYMBOL_REF_DECL (x))
+ mark_decl_referenced (SYMBOL_REF_DECL (x));
#ifdef ASM_OUTPUT_SYMBOL_REF
ASM_OUTPUT_SYMBOL_REF (file, x);
#else
char buf[10];
char *q, c;
va_list argptr;
-
+
va_start (argptr, p);
buf[0] = '%';
'o' cases, but we do not check for those cases. It
means that the value is a HOST_WIDE_INT, which may be
either `long' or `long long'. */
-
-#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
-#else
-#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
- *q++ = 'l';
-#else
- *q++ = 'l';
- *q++ = 'l';
-#endif
-#endif
-
+ memcpy (q, HOST_WIDE_INT_PRINT, strlen (HOST_WIDE_INT_PRINT));
+ q += strlen (HOST_WIDE_INT_PRINT);
*q++ = *p++;
*q = 0;
fprintf (file, buf, va_arg (argptr, HOST_WIDE_INT));
*q = 0;
fprintf (file, buf, va_arg (argptr, long));
}
-
+
break;
case 's':
break;
#ifdef ASM_FPRINTF_EXTENSIONS
- /* Upper case letters are reserved for general use by asm_fprintf
+ /* Uppercase letters are reserved for general use by asm_fprintf
and so are not available to target specific code. In order to
prevent the ASM_FPRINTF_EXTENSIONS macro from using them then,
they are defined here. As they get turned into real extensions
and in *SECOND the other. */
void
-split_double (value, first, second)
- rtx value;
- rtx *first, *second;
+split_double (rtx value, rtx *first, rtx *second)
{
if (GET_CODE (value) == CONST_INT)
{
/* Return nonzero if this function has no function calls. */
int
-leaf_function_p ()
+leaf_function_p (void)
{
rtx insn;
rtx link;
output templates to customary add branch prediction hints.
*/
int
-final_forward_branch_p (insn)
- rtx insn;
+final_forward_branch_p (rtx insn)
{
int insn_id, label_id;
if (!uid_shuid)
safely renumbered. */
int
-only_leaf_regs_used ()
+only_leaf_regs_used (void)
{
int i;
const char *const permitted_reg_in_leaf_functions = LEAF_REGISTERS;
if (current_function_uses_pic_offset_table
&& pic_offset_table_rtx != 0
- && GET_CODE (pic_offset_table_rtx) == REG
+ && REG_P (pic_offset_table_rtx)
&& ! permitted_reg_in_leaf_functions[REGNO (pic_offset_table_rtx)])
return 0;
available in leaf functions. */
static void
-leaf_renumber_regs (first)
- rtx first;
+leaf_renumber_regs (rtx first)
{
rtx insn;
available in leaf functions. */
void
-leaf_renumber_regs_insn (in_rtx)
- rtx in_rtx;
+leaf_renumber_regs_insn (rtx in_rtx)
{
int i, j;
const char *format_ptr;
renumbered_regs would be 1 for an output-register;
they */
- if (GET_CODE (in_rtx) == REG)
+ if (REG_P (in_rtx))
{
int newreg;
}
}
#endif
+
+
+/* When -gused is used, emit debug info for only used symbols. But in
+ addition to the standard intercepted debug_hooks there are some direct
+ calls into this file, i.e., dbxout_symbol, dbxout_parms, and dbxout_reg_params.
+ Those routines may also be called from a higher level intercepted routine. So
+ to prevent recording data for an inner call to one of these for an intercept,
+ we maintain an intercept nesting counter (debug_nesting). We only save the
+ intercepted arguments if the nesting is 1. */
+int debug_nesting = 0;
+
+static tree *symbol_queue;
+int symbol_queue_index = 0;
+static int symbol_queue_size = 0;
+
+/* Generate the symbols for any queued up type symbols we encountered
+ while generating the type info for some originally used symbol.
+ This might generate additional entries in the queue. Only when
+ the nesting depth goes to 0 is this routine called. */
+
+void
+debug_flush_symbol_queue (void)
+{
+ int i;
+
+ /* Make sure that additionally queued items are not flushed
+ prematurely. */
+
+ ++debug_nesting;
+
+ for (i = 0; i < symbol_queue_index; ++i)
+ {
+ /* If we pushed queued symbols then such symbols are must be
+ output no matter what anyone else says. Specifically,
+ we need to make sure dbxout_symbol() thinks the symbol was
+ used and also we need to override TYPE_DECL_SUPPRESS_DEBUG
+ which may be set for outside reasons. */
+ int saved_tree_used = TREE_USED (symbol_queue[i]);
+ int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]);
+ TREE_USED (symbol_queue[i]) = 1;
+ TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0;
+
+#ifdef DBX_DEBUGGING_INFO
+ dbxout_symbol (symbol_queue[i], 0);
+#endif
+
+ TREE_USED (symbol_queue[i]) = saved_tree_used;
+ TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug;
+ }
+
+ symbol_queue_index = 0;
+ --debug_nesting;
+}
+
+/* Queue a type symbol needed as part of the definition of a decl
+ symbol. These symbols are generated when debug_flush_symbol_queue()
+ is called. */
+
+void
+debug_queue_symbol (tree decl)
+{
+ if (symbol_queue_index >= symbol_queue_size)
+ {
+ symbol_queue_size += 10;
+ symbol_queue = xrealloc (symbol_queue,
+ symbol_queue_size * sizeof (tree));
+ }
+
+ symbol_queue[symbol_queue_index++] = decl;
+}
+
+/* Free symbol queue. */
+void
+debug_free_queue (void)
+{
+ if (symbol_queue)
+ {
+ free (symbol_queue);
+ symbol_queue = NULL;
+ symbol_queue_size = 0;
+ }
+}