/* 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, 2003, 2004, 2005, 2006, 2007, 2008
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GCC.
/* Line number of last NOTE. */
static int last_linenum;
+/* Last discriminator written to assembly. */
+static int last_discriminator;
+
+/* Discriminator of current block. */
+static int discriminator;
+
/* Highest line number in current block. */
static int high_block_linenum;
#endif
static void profile_function (FILE *);
static void profile_after_prologue (FILE *);
-static bool notice_source_line (rtx);
+static bool notice_source_line (rtx, bool *);
static rtx walk_alter_subreg (rtx *, bool *);
static void output_asm_name (void);
static void output_alternate_entry_point (FILE *, rtx);
int
label_to_alignment (rtx label)
{
- return LABEL_TO_ALIGNMENT (label);
+ if (CODE_LABEL_NUMBER (label) <= max_labelno)
+ return LABEL_TO_ALIGNMENT (label);
+ return 0;
+}
+
+int
+label_to_max_skip (rtx label)
+{
+ if (CODE_LABEL_NUMBER (label) <= max_labelno)
+ return LABEL_TO_MAX_SKIP (label);
+ return 0;
}
#ifdef HAVE_ATTR_length
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ TV_NONE, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
if (LABEL_P (insn))
{
rtx next;
+ bool next_is_jumptable;
/* Merge in alignments computed by compute_alignments. */
log = LABEL_TO_ALIGNMENT (insn);
max_skip = LABEL_TO_MAX_SKIP (insn);
}
- log = LABEL_ALIGN (insn);
- if (max_log < log)
+ next = next_nonnote_insn (insn);
+ next_is_jumptable = next && JUMP_TABLE_DATA_P (next);
+ if (!next_is_jumptable)
{
- max_log = log;
- max_skip = LABEL_ALIGN_MAX_SKIP;
+ log = LABEL_ALIGN (insn);
+ if (max_log < log)
+ {
+ max_log = log;
+ max_skip = LABEL_ALIGN_MAX_SKIP;
+ }
}
- next = next_nonnote_insn (insn);
/* ADDR_VECs only take room if read-only data goes into the text
section. */
- if (JUMP_TABLES_IN_TEXT_SECTION
- || readonly_data_section == text_section)
- if (next && JUMP_P (next))
- {
- rtx nextbody = PATTERN (next);
- if (GET_CODE (nextbody) == ADDR_VEC
- || GET_CODE (nextbody) == ADDR_DIFF_VEC)
- {
- log = ADDR_VEC_ALIGN (next);
- if (max_log < log)
- {
- max_log = log;
- max_skip = LABEL_ALIGN_MAX_SKIP;
- }
- }
- }
+ if ((JUMP_TABLES_IN_TEXT_SECTION
+ || readonly_data_section == text_section)
+ && next_is_jumptable)
+ {
+ log = ADDR_VEC_ALIGN (next);
+ if (max_log < log)
+ {
+ max_log = log;
+ max_skip = LABEL_ALIGN_MAX_SKIP;
+ }
+ }
LABEL_TO_ALIGNMENT (insn) = max_log;
LABEL_TO_MAX_SKIP (insn) = max_skip;
max_log = 0;
last_filename = locator_file (prologue_locator);
last_linenum = locator_line (prologue_locator);
+ last_discriminator = discriminator = 0;
high_block_linenum = high_function_linenum = last_linenum;
else
*seen |= SEEN_BB;
+ discriminator = NOTE_BASIC_BLOCK (insn)->discriminator;
+
break;
case NOTE_INSN_EH_REGION_BEG:
break;
case NOTE_INSN_EPILOGUE_BEG:
+#if defined (DWARF2_UNWIND_INFO) && defined (HAVE_epilogue)
+ if (dwarf2out_do_frame ())
+ dwarf2out_begin_epilogue (insn);
+#endif
targetm.asm_out.function_begin_epilogue (file);
break;
+ case NOTE_INSN_CFA_RESTORE_STATE:
+#if defined (DWARF2_UNWIND_INFO)
+ dwarf2out_frame_debug_restore_state ();
+#endif
+ break;
+
case NOTE_INSN_FUNCTION_BEG:
app_disable ();
(*debug_hooks->end_prologue) (last_linenum, last_filename);
app_disable ();
next = next_nonnote_insn (insn);
- if (next != 0 && JUMP_P (next))
+ /* If this label is followed by a jump-table, make sure we put
+ the label in the read-only section. Also possibly write the
+ label and jump table together. */
+ if (next != 0 && JUMP_TABLE_DATA_P (next))
{
- rtx nextbody = PATTERN (next);
-
- /* If this label is followed by a jump-table,
- make sure we put the label in the read-only section. Also
- possibly write the label and jump table together. */
-
- if (GET_CODE (nextbody) == ADDR_VEC
- || GET_CODE (nextbody) == ADDR_DIFF_VEC)
- {
#if defined(ASM_OUTPUT_ADDR_VEC) || defined(ASM_OUTPUT_ADDR_DIFF_VEC)
- /* In this case, the case vector is being moved by the
- target, so don't output the label at all. Leave that
- to the back end macros. */
+ /* In this case, the case vector is being moved by the
+ target, so don't output the label at all. Leave that
+ to the back end macros. */
#else
- if (! JUMP_TABLES_IN_TEXT_SECTION)
- {
- int log_align;
+ if (! JUMP_TABLES_IN_TEXT_SECTION)
+ {
+ int log_align;
- switch_to_section (targetm.asm_out.function_rodata_section
- (current_function_decl));
+ switch_to_section (targetm.asm_out.function_rodata_section
+ (current_function_decl));
#ifdef ADDR_VEC_ALIGN
- log_align = ADDR_VEC_ALIGN (next);
+ log_align = ADDR_VEC_ALIGN (next);
#else
- log_align = exact_log2 (BIGGEST_ALIGNMENT / BITS_PER_UNIT);
+ log_align = exact_log2 (BIGGEST_ALIGNMENT / BITS_PER_UNIT);
#endif
- ASM_OUTPUT_ALIGN (file, log_align);
- }
- else
- switch_to_section (current_function_section ());
+ ASM_OUTPUT_ALIGN (file, log_align);
+ }
+ else
+ switch_to_section (current_function_section ());
#ifdef ASM_OUTPUT_CASE_LABEL
- ASM_OUTPUT_CASE_LABEL (file, "L", CODE_LABEL_NUMBER (insn),
- next);
+ ASM_OUTPUT_CASE_LABEL (file, "L", CODE_LABEL_NUMBER (insn),
+ next);
#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;
- }
+ break;
}
if (LABEL_ALT_ENTRY_P (insn))
output_alternate_entry_point (file, insn);
rtx body = PATTERN (insn);
int insn_code_number;
const char *templ;
+ bool is_stmt;
#ifdef HAVE_conditional_execution
/* Reset this early so it is correct for ASM statements. */
}
/* Output this line note if it is the first or the last line
note in a row. */
- if (notice_source_line (insn))
+ if (notice_source_line (insn, &is_stmt))
{
- (*debug_hooks->source_line) (last_linenum, last_filename);
+ (*debug_hooks->source_line) (last_linenum,
+ last_filename,
+ last_discriminator,
+ is_stmt);
}
if (GET_CODE (body) == ASM_INPUT)
#endif
}
+ if (targetm.asm_out.final_postscan_insn)
+ targetm.asm_out.final_postscan_insn (file, insn, ops,
+ insn_noperands);
+
this_is_asm_operands = 0;
break;
}
&& GET_CODE (SET_DEST (set)) == CC0
&& insn != last_ignored_compare)
{
+ rtx src1, src2;
if (GET_CODE (SET_SRC (set)) == SUBREG)
SET_SRC (set) = alter_subreg (&SET_SRC (set));
- else if (GET_CODE (SET_SRC (set)) == COMPARE)
+
+ src1 = SET_SRC (set);
+ src2 = NULL_RTX;
+ if (GET_CODE (SET_SRC (set)) == COMPARE)
{
if (GET_CODE (XEXP (SET_SRC (set), 0)) == SUBREG)
XEXP (SET_SRC (set), 0)
if (GET_CODE (XEXP (SET_SRC (set), 1)) == SUBREG)
XEXP (SET_SRC (set), 1)
= alter_subreg (&XEXP (SET_SRC (set), 1));
+ if (XEXP (SET_SRC (set), 1)
+ == CONST0_RTX (GET_MODE (XEXP (SET_SRC (set), 0))))
+ src2 = XEXP (SET_SRC (set), 0);
}
if ((cc_status.value1 != 0
- && rtx_equal_p (SET_SRC (set), cc_status.value1))
+ && rtx_equal_p (src1, cc_status.value1))
|| (cc_status.value2 != 0
- && rtx_equal_p (SET_SRC (set), cc_status.value2)))
+ && rtx_equal_p (src1, cc_status.value2))
+ || (src2 != 0 && cc_status.value1 != 0
+ && rtx_equal_p (src2, cc_status.value1))
+ || (src2 != 0 && cc_status.value2 != 0
+ && rtx_equal_p (src2, cc_status.value2)))
{
/* Don't delete insn if it has an addressing side-effect. */
if (! FIND_REG_INC_NOTE (insn, NULL_RTX)
}
}
}
-#endif
-#ifdef HAVE_cc0
/* If this is a conditional branch, maybe modify it
if the cc's are in a nonstandard state
so that it accomplishes the same thing that it would
/* Output assembler code from the template. */
output_asm_insn (templ, recog_data.operand);
+ /* Some target machines need to postscan each insn after
+ it is output. */
+ if (targetm.asm_out.final_postscan_insn)
+ targetm.asm_out.final_postscan_insn (file, insn, recog_data.operand,
+ recog_data.n_operands);
+
/* If necessary, report the effect that the instruction has on
the unwind info. We've already done this for delay slots
and call instructions. */
return NEXT_INSN (insn);
}
\f
-/* Return whether a source line note needs to be emitted before INSN. */
+/* Return whether a source line note needs to be emitted before INSN.
+ Sets IS_STMT to TRUE if the line should be marked as a possible
+ breakpoint location. */
static bool
-notice_source_line (rtx insn)
+notice_source_line (rtx insn, bool *is_stmt)
{
const char *filename;
int linenum;
linenum = insn_line (insn);
}
- if (filename
- && (force_source_line
- || filename != last_filename
- || last_linenum != linenum))
+ if (filename == NULL)
+ return false;
+
+ if (force_source_line
+ || filename != last_filename
+ || last_linenum != linenum)
{
force_source_line = false;
last_filename = filename;
last_linenum = linenum;
+ last_discriminator = discriminator;
+ *is_stmt = true;
high_block_linenum = MAX (last_linenum, high_block_linenum);
high_function_linenum = MAX (last_linenum, high_function_linenum);
return true;
}
+
+ if (SUPPORTS_DISCRIMINATOR && last_discriminator != discriminator)
+ {
+ /* If the discriminator changed, but the line number did not,
+ output the line table entry with is_stmt false so the
+ debugger does not treat this as a breakpoint location. */
+ last_discriminator = discriminator;
+ *is_stmt = false;
+ return true;
+ }
+
return false;
}
\f
&& (expr = get_mem_expr_from_op (XEXP (op, 1), &inner_addressp)))
return expr;
- while (GET_RTX_CLASS (GET_CODE (op)) == RTX_UNARY
+ while (UNARY_P (op)
|| GET_RTX_CLASS (GET_CODE (op)) == RTX_BIN_ARITH)
op = XEXP (op, 0);
}
else if (letter == 'n')
{
- if (GET_CODE (operands[opnum]) == CONST_INT)
+ if (CONST_INT_P (operands[opnum]))
fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC,
- INTVAL (operands[opnum]));
else
case SYMBOL_REF:
if (SYMBOL_REF_DECL (x))
- mark_decl_referenced (SYMBOL_REF_DECL (x));
+ {
+ mark_decl_referenced (SYMBOL_REF_DECL (x));
+ assemble_external (SYMBOL_REF_DECL (x));
+ }
#ifdef ASM_OUTPUT_SYMBOL_REF
ASM_OUTPUT_SYMBOL_REF (file, x);
#else
case PLUS:
/* Some assemblers need integer constants to appear last (eg masm). */
- if (GET_CODE (XEXP (x, 0)) == CONST_INT)
+ if (CONST_INT_P (XEXP (x, 0)))
{
output_addr_const (file, XEXP (x, 1));
if (INTVAL (XEXP (x, 0)) >= 0)
else
{
output_addr_const (file, XEXP (x, 0));
- if (GET_CODE (XEXP (x, 1)) != CONST_INT
+ if (!CONST_INT_P (XEXP (x, 1))
|| INTVAL (XEXP (x, 1)) >= 0)
fprintf (file, "+");
output_addr_const (file, XEXP (x, 1));
output_addr_const (file, XEXP (x, 0));
fprintf (file, "-");
- if ((GET_CODE (XEXP (x, 1)) == CONST_INT && INTVAL (XEXP (x, 1)) >= 0)
+ if ((CONST_INT_P (XEXP (x, 1)) && INTVAL (XEXP (x, 1)) >= 0)
|| GET_CODE (XEXP (x, 1)) == PC
|| GET_CODE (XEXP (x, 1)) == SYMBOL_REF)
output_addr_const (file, XEXP (x, 1));
void
split_double (rtx value, rtx *first, rtx *second)
{
- if (GET_CODE (value) == CONST_INT)
+ if (CONST_INT_P (value))
{
if (HOST_BITS_PER_WIDE_INT >= (2 * BITS_PER_WORD))
{
rest_of_clean_state (void)
{
rtx insn, next;
+ FILE *final_output = NULL;
+ int save_unnumbered = flag_dump_unnumbered;
+ int save_noaddr = flag_dump_noaddr;
+
+ if (flag_dump_final_insns)
+ {
+ final_output = fopen (flag_dump_final_insns, "a");
+ if (!final_output)
+ {
+ error ("could not open final insn dump file %qs: %s",
+ flag_dump_final_insns, strerror (errno));
+ flag_dump_final_insns = NULL;
+ }
+ else
+ {
+ const char *aname;
+
+ aname = (IDENTIFIER_POINTER
+ (DECL_ASSEMBLER_NAME (current_function_decl)));
+ fprintf (final_output, "\n;; Function (%s) %s\n\n", aname,
+ cfun->function_frequency == FUNCTION_FREQUENCY_HOT
+ ? " (hot)"
+ : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED
+ ? " (unlikely executed)"
+ : "");
+
+ flag_dump_noaddr = flag_dump_unnumbered = 1;
+
+ for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
+ if (LABEL_P (insn))
+ INSN_UID (insn) = CODE_LABEL_NUMBER (insn);
+ else
+ INSN_UID (insn) = 0;
+ }
+ }
/* It is very important to decompose the RTL instruction chain here:
debug information keeps pointing into CODE_LABEL insns inside the function
next = NEXT_INSN (insn);
NEXT_INSN (insn) = NULL;
PREV_INSN (insn) = NULL;
+
+ if (final_output
+ && (!NOTE_P (insn) ||
+ (NOTE_KIND (insn) != NOTE_INSN_VAR_LOCATION
+ && NOTE_KIND (insn) != NOTE_INSN_BLOCK_BEG
+ && NOTE_KIND (insn) != NOTE_INSN_BLOCK_END)))
+ print_rtl_single (final_output, insn);
+
+ }
+
+ if (final_output)
+ {
+ flag_dump_noaddr = save_noaddr;
+ flag_dump_unnumbered = save_unnumbered;
+
+ if (fclose (final_output))
+ {
+ error ("could not close final insn dump file %qs: %s",
+ flag_dump_final_insns, strerror (errno));
+ flag_dump_final_insns = NULL;
+ }
}
/* In case the function was not output,
sdbout_types (NULL_TREE);
#endif
+ flag_rerun_cse_after_global_opts = 0;
reload_completed = 0;
epilogue_completed = 0;
#ifdef STACK_REGS
0 /* todo_flags_finish */
}
};
-
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