/* Top level of GCC compilers (cc1, cc1plus, etc.)
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
# include <sys/times.h>
#endif
+#include "line-map.h"
#include "input.h"
#include "tree.h"
#include "rtl.h"
#include "opts.h"
#include "coverage.h"
#include "value-prof.h"
+#include "alloc-pool.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
declarations for e.g. AIX 4.x. */
#endif
-/* Carry information from ASM_DECLARE_OBJECT_NAME
- to ASM_FINISH_DECLARE_OBJECT. */
-
-extern int size_directive_output;
-extern tree last_assemble_variable_decl;
-
-extern void reg_alloc (void);
-
static void general_init (const char *);
static void do_compile (void);
static void process_options (void);
static void print_switch_values (FILE *, int, int, const char *,
const char *, const char *);
-/* Rest of compilation helper functions. */
-static bool rest_of_handle_inlining (tree);
-static void rest_of_handle_cse (tree, rtx);
-static void rest_of_handle_cse2 (tree, rtx);
-static void rest_of_handle_gcse (tree, rtx);
-static void rest_of_handle_life (tree, rtx);
-static void rest_of_handle_loop_optimize (tree, rtx);
-static void rest_of_handle_loop2 (tree, rtx);
-static void rest_of_handle_jump_bypass (tree, rtx);
-static void rest_of_handle_sibling_calls (rtx);
-static void rest_of_handle_null_pointer (tree, rtx);
-static void rest_of_handle_addressof (tree, rtx);
-static void rest_of_handle_cfg (tree, rtx);
-static void rest_of_handle_branch_prob (tree, rtx);
-static void rest_of_handle_value_profile_transformations (tree, rtx);
-static void rest_of_handle_if_conversion (tree, rtx);
-static void rest_of_handle_if_after_combine (tree, rtx);
-static void rest_of_handle_tracer (tree, rtx);
-static void rest_of_handle_combine (tree, rtx);
-static void rest_of_handle_regmove (tree, rtx);
-#ifdef INSN_SCHEDULING
-static void rest_of_handle_sched (tree, rtx);
-static void rest_of_handle_sched2 (tree, rtx);
-#endif
-static bool rest_of_handle_new_regalloc (tree, rtx);
-static bool rest_of_handle_old_regalloc (tree, rtx);
-static void rest_of_handle_regrename (tree, rtx);
-static void rest_of_handle_reorder_blocks (tree, rtx);
-#ifdef STACK_REGS
-static void rest_of_handle_stack_regs (tree, rtx);
-#endif
-static void rest_of_handle_machine_reorg (tree, rtx);
-#ifdef DELAY_SLOTS
-static void rest_of_handle_delay_slots (tree, rtx);
-#endif
-static void rest_of_handle_final (tree, rtx);
-
/* Nonzero to dump debug info whilst parsing (-dy option). */
static int set_yydebug;
const char *main_input_filename;
+/* Used to enable -fvar-tracking, -fweb and -frename-registers according
+ to optimize and default_debug_hooks in process_options (). */
+#define AUTODETECT_FLAG_VAR_TRACKING 2
+
/* Current position in real source file. */
location_t input_location;
+struct line_maps line_table;
+
/* Nonzero if it is unsafe to create any new pseudo registers. */
int no_new_pseudos;
const char *aux_base_name;
-/* Format to use to print dumpfile index value */
-#ifndef DUMPFILE_FORMAT
-#define DUMPFILE_FORMAT ".%02d."
-#endif
-
/* Bit flags that specify the machine subtype we are compiling for.
Bits are tested using macros TARGET_... defined in the tm.h file
and set by `-m...' switches. Must be defined in rtlanal.c. */
const struct gcc_debug_hooks *debug_hooks;
-/* Describes a dump file. */
-
-struct dump_file_info
-{
- /* The unique extension to apply, e.g. ".jump". */
- const char *const extension;
-
- /* The -d<c> character that enables this dump file. */
- char const debug_switch;
-
- /* True if there is a corresponding graph dump file. */
- char const graph_dump_p;
-
- /* True if the user selected this dump. */
- char enabled;
+/* Debug hooks - target default. */
- /* True if the files have been initialized (ie truncated). */
- char initialized;
-};
-
-/* Enumerate the extant dump files. */
-
-enum dump_file_index
-{
- DFI_cgraph,
- DFI_rtl,
- DFI_sibling,
- DFI_eh,
- DFI_jump,
- DFI_null,
- DFI_cse,
- DFI_addressof,
- DFI_gcse,
- DFI_loop,
- DFI_bypass,
- DFI_cfg,
- DFI_bp,
- DFI_vpt,
- DFI_ce1,
- DFI_tracer,
- DFI_loop2,
- DFI_web,
- DFI_cse2,
- DFI_life,
- DFI_combine,
- DFI_ce2,
- DFI_regmove,
- DFI_sched,
- DFI_lreg,
- DFI_greg,
- DFI_postreload,
- DFI_flow2,
- DFI_peephole2,
- DFI_rnreg,
- DFI_bbro,
- DFI_ce3,
- DFI_branch_target_load,
- DFI_sched2,
- DFI_stack,
- DFI_mach,
- DFI_dbr,
- DFI_MAX
-};
-
-/* Describes all the dump files. Should be kept in order of the
- pass and in sync with dump_file_index above.
-
- Remaining -d letters:
-
- " e m q "
- " JK O Q WXY "
-*/
-
-static struct dump_file_info dump_file[DFI_MAX] =
-{
- { "cgraph", 'U', 0, 0, 0 },
- { "rtl", 'r', 0, 0, 0 },
- { "sibling", 'i', 0, 0, 0 },
- { "eh", 'h', 0, 0, 0 },
- { "jump", 'j', 0, 0, 0 },
- { "null", 'u', 0, 0, 0 },
- { "cse", 's', 0, 0, 0 },
- { "addressof", 'F', 0, 0, 0 },
- { "gcse", 'G', 1, 0, 0 },
- { "loop", 'L', 1, 0, 0 },
- { "bypass", 'G', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "cfg", 'f', 1, 0, 0 },
- { "bp", 'b', 1, 0, 0 },
- { "vpt", 'V', 1, 0, 0 },
- { "ce1", 'C', 1, 0, 0 },
- { "tracer", 'T', 1, 0, 0 },
- { "loop2", 'L', 1, 0, 0 },
- { "web", 'Z', 0, 0, 0 },
- { "cse2", 't', 1, 0, 0 },
- { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "combine", 'c', 1, 0, 0 },
- { "ce2", 'C', 1, 0, 0 },
- { "regmove", 'N', 1, 0, 0 },
- { "sched", 'S', 1, 0, 0 },
- { "lreg", 'l', 1, 0, 0 },
- { "greg", 'g', 1, 0, 0 },
- { "postreload", 'o', 1, 0, 0 },
- { "flow2", 'w', 1, 0, 0 },
- { "peephole2", 'z', 1, 0, 0 },
- { "rnreg", 'n', 1, 0, 0 },
- { "bbro", 'B', 1, 0, 0 },
- { "ce3", 'E', 1, 0, 0 },
- { "btl", 'd', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "sched2", 'R', 1, 0, 0 },
- { "stack", 'k', 1, 0, 0 },
- { "mach", 'M', 1, 0, 0 },
- { "dbr", 'd', 0, 0, 0 },
-};
-
-static int open_dump_file (enum dump_file_index, tree);
-static void close_dump_file (enum dump_file_index,
- void (*) (FILE *, rtx), rtx);
+static const struct gcc_debug_hooks *default_debug_hooks;
/* Other flags saying which kinds of debugging dump have been requested. */
int flag_reorder_blocks = 0;
+/* Nonzero if blocks should be partitioned into hot and cold sections in
+ addition to being reordered. */
+
+int flag_reorder_blocks_and_partition = 0;
+
/* Nonzero if functions should be reordered. */
int flag_reorder_functions = 0;
-/* Nonzero if registers should be renamed. */
-
-int flag_rename_registers = 0;
+/* Nonzero if registers should be renamed. When
+ flag_rename_registers == AUTODETECT_FLAG_VAR_TRACKING it will be set
+ according to optimize and default_debug_hooks in process_options (). */
+int flag_rename_registers = AUTODETECT_FLAG_VAR_TRACKING;
int flag_cprop_registers = 0;
/* Nonzero for -pedantic switch: warn about anything
be saved across function calls, if that produces overall better code.
Optional now, so people can test it. */
-#ifdef DEFAULT_CALLER_SAVES
-int flag_caller_saves = 1;
-#else
int flag_caller_saves = 0;
-#endif
/* Nonzero if structures and unions should be returned in memory.
int flag_regmove = 0;
-/* Nonzero for -fwritable-strings:
- store string constants in data segment and don't uniquize them. */
-
-int flag_writable_strings = 0;
-
/* Nonzero means don't put addresses of constant functions in registers.
Used for compiling the Unix kernel, where strange substitutions are
done on the assembly output. */
int flag_syntax_only = 0;
-/* Nonzero means performs web construction pass. */
+/* Nonzero means performs web construction pass. When flag_web ==
+ AUTODETECT_FLAG_VAR_TRACKING it will be set according to optimize
+ and default_debug_hooks in process_options (). */
-int flag_web;
+int flag_web = AUTODETECT_FLAG_VAR_TRACKING;
/* Nonzero means perform loop optimizer. */
int flag_gcse_sm = 1;
-/* Nonzero if we want to perfrom redundant load after store elimination
+/* Nonzero if we want to perform redundant load after store elimination
in gcse. */
int flag_gcse_las = 1;
+/* Nonzero means perform global cse after register allocation. */
+int flag_gcse_after_reload = 0;
+
/* Perform target register optimization before prologue / epilogue
threading. */
int flag_branch_target_load_optimize2 = 0;
+/* For the bt-load pass, nonzero means don't re-use branch target registers
+ in any basic block. */
+
+int flag_btr_bb_exclusive;
+
/* Nonzero means to rerun cse after loop optimization. This increases
compilation time about 20% and picks up a few more common expressions. */
flag_sched_stalled_insns means that insns can be moved prematurely from the queue
of stalled insns into the ready list.
-
+
flag_sched_stalled_insns_dep controls how many insn groups will be examined
for a dependency on a stalled insn that is candidate for premature removal
from the queue of stalled insns into the ready list (has an effect only if
- the flag 'sched_stalled_insns' is set). */
+ the flag 'sched_stalled_insns' is set). */
int flag_sched_stalled_insns = 0;
int flag_sched_stalled_insns_dep = 1;
int flag_dump_rtl_in_asm = 0;
-/* -fgnu-linker specifies use of the GNU linker for initializations.
- (Or, more generally, a linker that handles initializations.)
- -fno-gnu-linker says that collect2 will be used. */
-#ifdef USE_COLLECT2
-int flag_gnu_linker = 0;
-#else
-int flag_gnu_linker = 1;
-#endif
-
/* Nonzero means put zero initialized data in the bss section. */
int flag_zero_initialized_in_bss = 1;
int flag_unit_at_a_time = 0;
+/* Nonzero if we should track variables. When
+ flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING it will be set according
+ to optimize, debug_info_level and debug_hooks in process_options (). */
+int flag_var_tracking = AUTODETECT_FLAG_VAR_TRACKING;
+
/* Values of the -falign-* flags: how much to align labels in code.
0 means `use default', 1 means `don't align'.
For each variable, there is an _log variant which is the power
/* Add or remove a leading underscore from user symbols. */
int flag_leading_underscore = -1;
+/* The version of the C++ ABI in use. The following values are
+ allowed:
+
+ 0: The version of the ABI believed most conformant with the
+ C++ ABI specification. This ABI may change as bugs are
+ discovered and fixed. Therefore, 0 will not necessarily
+ indicate the same ABI in different versions of G++.
+
+ 1: The version of the ABI first used in G++ 3.2.
+
+ 2: The version of the ABI first used in G++ 3.4.
+
+ Additional positive integers will be assigned as new versions of
+ the ABI become the default version of the ABI. */
+
+int flag_abi_version = 2;
+
/* The user symbol prefix after having resolved same. */
const char *user_label_prefix;
{"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1 },
{"move-all-movables", &flag_move_all_movables, 1 },
{"reduce-all-givs", &flag_reduce_all_givs, 1 },
- {"writable-strings", &flag_writable_strings, 1 },
{"peephole", &flag_no_peephole, 0 },
{"force-mem", &flag_force_mem, 1 },
{"force-addr", &flag_force_addr, 1 },
{"gcse-lm", &flag_gcse_lm, 1 },
{"gcse-sm", &flag_gcse_sm, 1 },
{"gcse-las", &flag_gcse_las, 1 },
+ {"gcse-after-reload", &flag_gcse_after_reload, 1},
{"branch-target-load-optimize", &flag_branch_target_load_optimize, 1 },
{"branch-target-load-optimize2", &flag_branch_target_load_optimize2, 1 },
+ {"btr-bb-exclusive", &flag_btr_bb_exclusive, 1 },
{"loop-optimize", &flag_loop_optimize, 1 },
{"crossjumping", &flag_crossjumping, 1 },
{"if-conversion", &flag_if_conversion, 1 },
{"branch-probabilities", &flag_branch_probabilities, 1 },
{"profile", &profile_flag, 1 },
{"reorder-blocks", &flag_reorder_blocks, 1 },
+ {"reorder-blocks-and-partition", &flag_reorder_blocks_and_partition, 1},
{"reorder-functions", &flag_reorder_functions, 1 },
{"rename-registers", &flag_rename_registers, 1 },
{"cprop-registers", &flag_cprop_registers, 1 },
{"function-sections", &flag_function_sections, 1 },
{"data-sections", &flag_data_sections, 1 },
{"verbose-asm", &flag_verbose_asm, 1 },
- {"gnu-linker", &flag_gnu_linker, 1 },
{"regmove", &flag_regmove, 1 },
{"optimize-register-move", &flag_regmove, 1 },
{"pack-struct", &flag_pack_struct, 1 },
{"mem-report", &mem_report, 1 },
{ "trapv", &flag_trapv, 1 },
{ "wrapv", &flag_wrapv, 1 },
- { "new-ra", &flag_new_regalloc, 1 }
+ { "new-ra", &flag_new_regalloc, 1 },
+ { "var-tracking", &flag_var_tracking, 1}
};
/* Here is a table, controlled by the tm.h file, listing each -m switch
FILE *asm_out_file;
FILE *aux_info_file;
-FILE *rtl_dump_file = NULL;
+FILE *dump_file = NULL;
FILE *cgraph_dump_file = NULL;
/* The current working directory of a translation. It's generally the
set_src_pwd (const char *pwd)
{
if (src_pwd)
- return false;
+ {
+ if (strcmp (src_pwd, pwd) == 0)
+ return true;
+ else
+ return false;
+ }
src_pwd = xstrdup (pwd);
return true;
if (rtl_dump_and_exit)
verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
else
- verbatim (" %s", (*lang_hooks.decl_printable_name) (decl, 2));
+ verbatim (" %s", lang_hooks.decl_printable_name (decl, 2));
fflush (stderr);
pp_needs_newline (global_dc->printer) = true;
diagnostic_set_last_function (global_dc);
{
unsigned HOST_WIDE_INT value;
static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
-
+
/* Get some more or less random data. */
#ifdef HAVE_GETTIMEOFDAY
{
struct timeval tv;
-
+
gettimeofday (&tv, NULL);
local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
}
#endif
value = local_tick ^ getpid ();
-
+
sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
flag_random_seed = random_seed;
}
{
int len;
const char *na;
-
+
if (input_name == NULL)
input_name = "<stdin>";
na--;
}
-#ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
- ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
-#else
#ifdef ASM_OUTPUT_SOURCE_FILENAME
ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
#else
output_quoted_string (asm_file, na);
fputc ('\n', asm_file);
#endif
-#endif
-}
-
-/* Routine to open a dump file. Return true if the dump file is enabled. */
-
-static int
-open_dump_file (enum dump_file_index index, tree decl)
-{
- char *dump_name;
- const char *open_arg;
- char seq[16];
-
- if (! dump_file[index].enabled)
- return 0;
-
- timevar_push (TV_DUMP);
- if (rtl_dump_file != NULL)
- fclose (rtl_dump_file);
-
- sprintf (seq, DUMPFILE_FORMAT, index);
-
- if (! dump_file[index].initialized)
- {
- /* If we've not initialized the files, do so now. */
- if (graph_dump_format != no_graph
- && dump_file[index].graph_dump_p)
- {
- dump_name = concat (seq, dump_file[index].extension, NULL);
- clean_graph_dump_file (dump_base_name, dump_name);
- free (dump_name);
- }
- dump_file[index].initialized = 1;
- open_arg = "w";
- }
- else
- open_arg = "a";
-
- dump_name = concat (dump_base_name, seq,
- dump_file[index].extension, NULL);
-
- rtl_dump_file = fopen (dump_name, open_arg);
- if (rtl_dump_file == NULL)
- fatal_error ("can't open %s: %m", dump_name);
-
- free (dump_name);
-
- if (decl)
- fprintf (rtl_dump_file, "\n;; Function %s%s\n\n",
- (*lang_hooks.decl_printable_name) (decl, 2),
- cfun->function_frequency == FUNCTION_FREQUENCY_HOT
- ? " (hot)"
- : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED
- ? " (unlikely executed)"
- : "");
-
- timevar_pop (TV_DUMP);
- return 1;
-}
-
-/* Routine to close a dump file. */
-
-static void
-close_dump_file (enum dump_file_index index,
- void (*func) (FILE *, rtx),
- rtx insns)
-{
- if (! rtl_dump_file)
- return;
-
- timevar_push (TV_DUMP);
- if (insns
- && graph_dump_format != no_graph
- && dump_file[index].graph_dump_p)
- {
- char seq[16];
- char *suffix;
-
- sprintf (seq, DUMPFILE_FORMAT, index);
- suffix = concat (seq, dump_file[index].extension, NULL);
- print_rtl_graph_with_bb (dump_base_name, suffix, insns);
- free (suffix);
- }
-
- if (func && insns)
- func (rtl_dump_file, insns);
-
- fflush (rtl_dump_file);
- fclose (rtl_dump_file);
-
- rtl_dump_file = NULL;
- timevar_pop (TV_DUMP);
}
/* Do any final processing required for the declarations in VEC, of
DECL_DEFER_OUTPUT (decl) = 0;
if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0)
- (*lang_hooks.finish_incomplete_decl) (decl);
+ lang_hooks.finish_incomplete_decl (decl);
}
/* Now emit any global variables or functions that we have been
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_INITIAL (decl) != 0
- && DECL_SAVED_INSNS (decl) != 0
- && DECL_SAVED_INSNS (decl)->saved_for_inline
+ && DECL_STRUCT_FUNCTION (decl) != 0
+ && DECL_STRUCT_FUNCTION (decl)->saved_for_inline
&& (flag_keep_inline_functions
|| (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
/* Global register variables must be declared to reserve them. */
&& ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
/* Otherwise, ask the language. */
- && (*lang_hooks.decls.warn_unused_global) (decl))
+ && lang_hooks.decls.warn_unused_global (decl))
warning ("%J'%D' defined but not used", decl, decl);
/* Avoid confusing the debug information machinery when there are
/* Call the parser, which parses the entire file (calling
rest_of_compilation for each function). */
- (*lang_hooks.parse_file) (set_yydebug);
+ lang_hooks.parse_file (set_yydebug);
/* In case there were missing block closers,
get us back to the global binding level. */
- (*lang_hooks.clear_binding_stack) ();
+ lang_hooks.clear_binding_stack ();
/* Compilation is now finished except for writing
what's left of the symbol table output. */
if (flag_syntax_only)
return;
- (*lang_hooks.decls.final_write_globals)();
+ lang_hooks.decls.final_write_globals ();
cgraph_varpool_assemble_pending_decls ();
dw2_output_indirect_constants ();
- if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- {
- timevar_push (TV_DUMP);
- open_dump_file (DFI_bp, NULL);
-
- end_branch_prob ();
-
- close_dump_file (DFI_bp, NULL, NULL_RTX);
- timevar_pop (TV_DUMP);
- }
-
- targetm.asm_out.file_end ();
-
/* Attach a special .ident directive to the end of the file to identify
the version of GCC which compiled this code. The format of the .ident
string is patterned after the ones produced by native SVR4 compilers. */
IDENT_ASM_OP, version_string);
#endif
- if (optimize > 0 && open_dump_file (DFI_combine, NULL))
- {
- timevar_push (TV_DUMP);
- dump_combine_total_stats (rtl_dump_file);
- close_dump_file (DFI_combine, NULL, NULL_RTX);
- timevar_pop (TV_DUMP);
- }
+ /* This must be at the end. Some target ports emit end of file directives
+ into the assembly file here, and hence we can not output anything to the
+ assembly file after this point. */
+ targetm.asm_out.file_end ();
}
-/* This is called from various places for FUNCTION_DECL, VAR_DECL,
- and TYPE_DECL nodes.
-
- This does nothing for local (non-static) variables, unless the
- variable is a register variable with an ASMSPEC. In that case, or
- if the variable is not an automatic, it sets up the RTL and
- outputs any assembler code (label definition, storage allocation
- and initialization).
-
- DECL is the declaration. If ASMSPEC is nonzero, it specifies
- the assembler symbol name to be used. TOP_LEVEL is nonzero
- if this declaration is not within a function. */
-
+/* Display help for target options. */
void
-rest_of_decl_compilation (tree decl,
- const char *asmspec,
- int top_level,
- int at_end)
+display_target_options (void)
{
- /* We deferred calling assemble_alias so that we could collect
- other attributes such as visibility. Emit the alias now. */
- {
- tree alias;
- alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl));
- if (alias)
- {
- alias = TREE_VALUE (TREE_VALUE (alias));
- alias = get_identifier (TREE_STRING_POINTER (alias));
- assemble_alias (decl, alias);
- }
- }
+ int undoc, i;
+ static bool displayed = false;
+
+ /* Avoid double printing for --help --target-help. */
+ if (displayed)
+ return;
+
+ displayed = true;
- /* Forward declarations for nested functions are not "external",
- but we need to treat them as if they were. */
- if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
- || TREE_CODE (decl) == FUNCTION_DECL)
+ if (ARRAY_SIZE (target_switches) > 1
+#ifdef TARGET_OPTIONS
+ || ARRAY_SIZE (target_options) > 1
+#endif
+ )
{
- timevar_push (TV_VARCONST);
+ int doc = 0;
- if (asmspec)
- make_decl_rtl (decl, asmspec);
+ undoc = 0;
- /* Don't output anything when a tentative file-scope definition
- is seen. But at end of compilation, do output code for them. */
- if ((at_end || !DECL_DEFER_OUTPUT (decl)) && !DECL_EXTERNAL (decl))
- {
- if (flag_unit_at_a_time && !cgraph_global_info_ready
- && TREE_CODE (decl) != FUNCTION_DECL && top_level)
- cgraph_varpool_finalize_decl (decl);
- else
- assemble_variable (decl, top_level, at_end, 0);
- }
+ printf (_("\nTarget specific options:\n"));
-#ifdef ASM_FINISH_DECLARE_OBJECT
- if (decl == last_assemble_variable_decl)
+ for (i = ARRAY_SIZE (target_switches); i--;)
{
- ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
- top_level, at_end);
+ const char *option = target_switches[i].name;
+ const char *description = target_switches[i].description;
+
+ if (option == NULL || *option == 0)
+ continue;
+ else if (description == NULL)
+ {
+ undoc = 1;
+
+ if (extra_warnings)
+ printf (_(" -m%-23s [undocumented]\n"), option);
+ }
+ else if (*description != 0)
+ doc += printf (" -m%-23s %s\n", option, _(description));
}
-#endif
- timevar_pop (TV_VARCONST);
- }
- else if (DECL_REGISTER (decl) && asmspec != 0)
- {
- if (decode_reg_name (asmspec) >= 0)
+#ifdef TARGET_OPTIONS
+ for (i = ARRAY_SIZE (target_options); i--;)
{
- SET_DECL_RTL (decl, NULL_RTX);
- make_decl_rtl (decl, asmspec);
+ const char *option = target_options[i].prefix;
+ const char *description = target_options[i].description;
+
+ if (option == NULL || *option == 0)
+ continue;
+ else if (description == NULL)
+ {
+ undoc = 1;
+
+ if (extra_warnings)
+ printf (_(" -m%-23s [undocumented]\n"), option);
+ }
+ else if (*description != 0)
+ doc += printf (" -m%-23s %s\n", option, _(description));
}
- else
+#endif
+ if (undoc)
{
- error ("invalid register name `%s' for register variable", asmspec);
- DECL_REGISTER (decl) = 0;
- if (!top_level)
- expand_decl (decl);
+ if (doc)
+ printf (_("\nThere are undocumented target specific options as well.\n"));
+ else
+ printf (_(" They exist, but they are not documented.\n"));
}
}
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- dbxout_symbol (decl, 0);
- timevar_pop (TV_SYMOUT);
- }
-#endif
-#ifdef SDB_DEBUGGING_INFO
- else if (write_symbols == SDB_DEBUG && top_level
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- sdbout_symbol (decl, 0);
- timevar_pop (TV_SYMOUT);
- }
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- else if ((write_symbols == DWARF2_DEBUG
- || write_symbols == VMS_AND_DWARF2_DEBUG)
- && top_level
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- dwarf2out_decl (decl);
- timevar_pop (TV_SYMOUT);
- }
-#endif
}
-/* Called after finishing a record, union or enumeral type. */
+/* Parse a -d... command line switch. */
void
-rest_of_type_compilation (
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) \
- || defined (SDB_DEBUGGING_INFO) || defined (DWARF2_DEBUGGING_INFO)
- tree type,
- int toplev
-#else
- tree type ATTRIBUTE_UNUSED,
- int toplev ATTRIBUTE_UNUSED
-#endif
- )
-{
- /* Avoid confusing the debug information machinery when there are
- errors. */
- if (errorcount != 0 || sorrycount != 0)
- return;
-
- timevar_push (TV_SYMOUT);
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- dbxout_symbol (TYPE_STUB_DECL (type), !toplev);
-#endif
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_symbol (TYPE_STUB_DECL (type), !toplev);
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- if ((write_symbols == DWARF2_DEBUG
- || write_symbols == VMS_AND_DWARF2_DEBUG)
- && toplev)
- dwarf2out_decl (TYPE_STUB_DECL (type));
-#endif
- timevar_pop (TV_SYMOUT);
-}
-
-/* Turn the RTL into assembly. */
-static void
-rest_of_handle_final (tree decl, rtx insns)
+decode_d_option (const char *arg)
{
- timevar_push (TV_FINAL);
- {
- rtx x;
- const char *fnname;
-
- /* Get the function's name, as described by its RTL. This may be
- different from the DECL_NAME name used in the source file. */
-
- x = DECL_RTL (decl);
- if (GET_CODE (x) != MEM)
- abort ();
- x = XEXP (x, 0);
- if (GET_CODE (x) != SYMBOL_REF)
- abort ();
- fnname = XSTR (x, 0);
-
- assemble_start_function (decl, fnname);
- final_start_function (insns, asm_out_file, optimize);
- final (insns, asm_out_file, optimize, 0);
- final_end_function ();
-
-#ifdef IA64_UNWIND_INFO
- /* ??? The IA-64 ".handlerdata" directive must be issued before
- the ".endp" directive that closes the procedure descriptor. */
- output_function_exception_table ();
-#endif
+ int c;
- assemble_end_function (decl, fnname);
-
-#ifndef IA64_UNWIND_INFO
- /* Otherwise, it feels unclean to switch sections in the middle. */
- output_function_exception_table ();
-#endif
-
- if (! quiet_flag)
- fflush (asm_out_file);
-
- /* Release all memory allocated by flow. */
- free_basic_block_vars (0);
-
- /* Release all memory held by regsets now. */
- regset_release_memory ();
- }
- timevar_pop (TV_FINAL);
+ while (*arg)
+ switch (c = *arg++)
+ {
+ case 'A':
+ flag_debug_asm = 1;
+ break;
+ case 'p':
+ flag_print_asm_name = 1;
+ break;
+ case 'P':
+ flag_dump_rtl_in_asm = 1;
+ flag_print_asm_name = 1;
+ break;
+ case 'v':
+ graph_dump_format = vcg;
+ break;
+ case 'x':
+ rtl_dump_and_exit = 1;
+ break;
+ case 'y':
+ set_yydebug = 1;
+ break;
+ case 'D': /* These are handled by the preprocessor. */
+ case 'I':
+ break;
+ case 'H':
+ setup_core_dumping();
+ break;
- ggc_collect ();
+ case 'a':
+ default:
+ if (!enable_rtl_dump_file (c))
+ warning ("unrecognized gcc debugging option: %c", c);
+ break;
+ }
}
-#ifdef DELAY_SLOTS
-/* Run delay slot optimization. */
-static void
-rest_of_handle_delay_slots (tree decl, rtx insns)
+/* Indexed by enum debug_info_type. */
+const char *const debug_type_names[] =
{
- timevar_push (TV_DBR_SCHED);
- open_dump_file (DFI_dbr, decl);
-
- dbr_schedule (insns, rtl_dump_file);
+ "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms"
+};
- close_dump_file (DFI_dbr, print_rtl, insns);
- timevar_pop (TV_DBR_SCHED);
-
- ggc_collect ();
-}
-#endif
-
-#ifdef STACK_REGS
-/* Convert register usage from flat register file usage to a stack
- register file. */
-static void
-rest_of_handle_stack_regs (tree decl, rtx insns)
-{
-#if defined (HAVE_ATTR_length)
- /* If flow2 creates new instructions which need splitting
- and scheduling after reload is not done, they might not be
- splitten until final which doesn't allow splitting
- if HAVE_ATTR_length. */
-#ifdef INSN_SCHEDULING
- if (optimize && !flag_schedule_insns_after_reload)
-#else
- if (optimize)
-#endif
- {
- timevar_push (TV_SHORTEN_BRANCH);
- split_all_insns (1);
- timevar_pop (TV_SHORTEN_BRANCH);
- }
-#endif
-
- timevar_push (TV_REG_STACK);
- open_dump_file (DFI_stack, decl);
-
- if (reg_to_stack (insns, rtl_dump_file) && optimize)
- {
- if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK
- | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0))
- && flag_reorder_blocks)
- {
- reorder_basic_blocks ();
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
- }
- }
-
- close_dump_file (DFI_stack, print_rtl_with_bb, insns);
- timevar_pop (TV_REG_STACK);
-
- ggc_collect ();
-}
-#endif
-
-
-/* Machine independent reorg pass. */
-static void
-rest_of_handle_machine_reorg (tree decl, rtx insns)
-{
- timevar_push (TV_MACH_DEP);
- open_dump_file (DFI_mach, decl);
-
- (*targetm.machine_dependent_reorg) ();
-
- close_dump_file (DFI_mach, print_rtl, insns);
- timevar_pop (TV_MACH_DEP);
-
- ggc_collect ();
-}
-
-
-/* Run new register allocator. Return TRUE if we must exit
- rest_of_compilation upon return. */
-static bool
-rest_of_handle_new_regalloc (tree decl, rtx insns)
-{
- int failure;
-
- delete_trivially_dead_insns (insns, max_reg_num ());
- reg_alloc ();
-
- timevar_pop (TV_LOCAL_ALLOC);
- if (dump_file[DFI_lreg].enabled)
- {
- timevar_push (TV_DUMP);
-
- close_dump_file (DFI_lreg, NULL, NULL);
- timevar_pop (TV_DUMP);
- }
-
- /* XXX clean up the whole mess to bring live info in shape again. */
- timevar_push (TV_GLOBAL_ALLOC);
- open_dump_file (DFI_greg, decl);
-
- build_insn_chain (insns);
- failure = reload (insns, 0);
-
- timevar_pop (TV_GLOBAL_ALLOC);
-
- if (dump_file[DFI_greg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_global_regs (rtl_dump_file);
-
- close_dump_file (DFI_greg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- if (failure)
- return true;
-
- reload_completed = 1;
-
- return false;
-}
-
-/* Run old register allocator. Return TRUE if we must exit
- rest_of_compilation upon return. */
-static bool
-rest_of_handle_old_regalloc (tree decl, rtx insns)
-{
- int failure;
- int rebuild_notes;
-
- /* Allocate the reg_renumber array. */
- allocate_reg_info (max_regno, FALSE, TRUE);
-
- /* And the reg_equiv_memory_loc array. */
- reg_equiv_memory_loc = xcalloc (max_regno, sizeof (rtx));
-
- allocate_initial_values (reg_equiv_memory_loc);
-
- regclass (insns, max_reg_num (), rtl_dump_file);
- rebuild_notes = local_alloc ();
-
- timevar_pop (TV_LOCAL_ALLOC);
-
- /* Local allocation may have turned an indirect jump into a direct
- jump. If so, we must rebuild the JUMP_LABEL fields of jumping
- instructions. */
- if (rebuild_notes)
- {
- timevar_push (TV_JUMP);
-
- rebuild_jump_labels (insns);
- purge_all_dead_edges (0);
-
- timevar_pop (TV_JUMP);
- }
-
- if (dump_file[DFI_lreg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_flow_info (rtl_dump_file);
- dump_local_alloc (rtl_dump_file);
-
- close_dump_file (DFI_lreg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- ggc_collect ();
-
- timevar_push (TV_GLOBAL_ALLOC);
- open_dump_file (DFI_greg, decl);
-
- /* If optimizing, allocate remaining pseudo-regs. Do the reload
- pass fixing up any insns that are invalid. */
-
- if (optimize)
- failure = global_alloc (rtl_dump_file);
- else
- {
- build_insn_chain (insns);
- failure = reload (insns, 0);
- }
-
- timevar_pop (TV_GLOBAL_ALLOC);
-
- if (dump_file[DFI_greg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_global_regs (rtl_dump_file);
-
- close_dump_file (DFI_greg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- return failure;
-}
-
-/* Run the regrename and cprop passes. */
-static void
-rest_of_handle_regrename (tree decl, rtx insns)
-{
- timevar_push (TV_RENAME_REGISTERS);
- open_dump_file (DFI_rnreg, decl);
-
- if (flag_rename_registers)
- regrename_optimize ();
- if (flag_cprop_registers)
- copyprop_hardreg_forward ();
-
- close_dump_file (DFI_rnreg, print_rtl_with_bb, insns);
- timevar_pop (TV_RENAME_REGISTERS);
-}
-
-/* Reorder basic blocks. */
-static void
-rest_of_handle_reorder_blocks (tree decl, rtx insns)
-{
- timevar_push (TV_REORDER_BLOCKS);
- open_dump_file (DFI_bbro, decl);
-
- /* Last attempt to optimize CFG, as scheduling, peepholing and insn
- splitting possibly introduced more crossjumping opportunities. */
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE
- | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0));
-
- if (flag_sched2_use_traces && flag_schedule_insns_after_reload)
- tracer ();
- if (flag_reorder_blocks)
- reorder_basic_blocks ();
- if (flag_reorder_blocks
- || (flag_sched2_use_traces && flag_schedule_insns_after_reload))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
-
- close_dump_file (DFI_bbro, print_rtl_with_bb, insns);
- timevar_pop (TV_REORDER_BLOCKS);
-}
-
-#ifdef INSN_SCHEDULING
-/* Run instruction scheduler. */
-static void
-rest_of_handle_sched (tree decl, rtx insns)
-{
- timevar_push (TV_SCHED);
-
- /* Print function header into sched dump now
- because doing the sched analysis makes some of the dump. */
- if (optimize > 0 && flag_schedule_insns)
- {
- open_dump_file (DFI_sched, decl);
-
- /* Do control and data sched analysis,
- and write some of the results to dump file. */
-
- schedule_insns (rtl_dump_file);
-
- close_dump_file (DFI_sched, print_rtl_with_bb, insns);
- }
- timevar_pop (TV_SCHED);
-
- ggc_collect ();
-}
-
-/* Run second scheduling pass after reload. */
-static void
-rest_of_handle_sched2 (tree decl, rtx insns)
-{
- timevar_push (TV_SCHED2);
- open_dump_file (DFI_sched2, decl);
-
- /* Do control and data sched analysis again,
- and write some more of the results to dump file. */
-
- split_all_insns (1);
-
- if (flag_sched2_use_superblocks || flag_sched2_use_traces)
- {
- schedule_ebbs (rtl_dump_file);
- /* No liveness updating code yet, but it should be easy to do.
- reg-stack recompute the liveness when needed for now. */
- count_or_remove_death_notes (NULL, 1);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- }
- else
- schedule_insns (rtl_dump_file);
-
- close_dump_file (DFI_sched2, print_rtl_with_bb, insns);
- timevar_pop (TV_SCHED2);
-
- ggc_collect ();
-}
-#endif
-
-/* Register allocation pre-pass, to reduce number of moves necessary
- for two-address machines. */
-static void
-rest_of_handle_regmove (tree decl, rtx insns)
-{
- timevar_push (TV_REGMOVE);
- open_dump_file (DFI_regmove, decl);
-
- regmove_optimize (insns, max_reg_num (), rtl_dump_file);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- close_dump_file (DFI_regmove, print_rtl_with_bb, insns);
- timevar_pop (TV_REGMOVE);
-
- ggc_collect ();
-}
-
-/* Run tracer. */
-static void
-rest_of_handle_tracer (tree decl, rtx insns)
-{
- timevar_push (TV_TRACER);
- open_dump_file (DFI_tracer, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- tracer ();
- cleanup_cfg (CLEANUP_EXPENSIVE);
- reg_scan (insns, max_reg_num (), 0);
- close_dump_file (DFI_tracer, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_TRACER);
-}
-
-/* If-conversion and CFG cleanup. */
-static void
-rest_of_handle_if_conversion (tree decl, rtx insns)
-{
- open_dump_file (DFI_ce1, decl);
- if (flag_if_conversion)
- {
- timevar_push (TV_IFCVT);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- reg_scan (insns, max_reg_num (), 0);
- if_convert (0);
- timevar_pop (TV_IFCVT);
- }
- timevar_push (TV_JUMP);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- reg_scan (insns, max_reg_num (), 0);
- timevar_pop (TV_JUMP);
- close_dump_file (DFI_ce1, print_rtl_with_bb, get_insns ());
-}
-
-/* Rerun if-conversion, as combine may have simplified things enough
- to now meet sequence length restrictions. */
-static void
-rest_of_handle_if_after_combine (tree decl, rtx insns)
-{
- timevar_push (TV_IFCVT);
- open_dump_file (DFI_ce2, decl);
-
- no_new_pseudos = 0;
- if_convert (1);
- no_new_pseudos = 1;
-
- close_dump_file (DFI_ce2, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT);
-}
-
-static void
-rest_of_handle_web (tree decl, rtx insns)
-{
- open_dump_file (DFI_web, decl);
- timevar_push (TV_WEB);
- web_main ();
- delete_trivially_dead_insns (insns, max_reg_num ());
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- timevar_pop (TV_WEB);
- close_dump_file (DFI_web, print_rtl_with_bb, insns);
- reg_scan (get_insns (), max_reg_num (), 0);
-}
-
-/* Do branch profiling and static profile estimation passes. */
-static void
-rest_of_handle_branch_prob (tree decl, rtx insns)
-{
- struct loops loops;
-
- timevar_push (TV_BRANCH_PROB);
- open_dump_file (DFI_bp, decl);
-
- if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- branch_prob ();
-
- /* Discover and record the loop depth at the head of each basic
- block. The loop infrastructure does the real job for us. */
- flow_loops_find (&loops, LOOP_TREE);
-
- if (rtl_dump_file)
- flow_loops_dump (&loops, rtl_dump_file, NULL, 0);
-
- /* Estimate using heuristics if no profiling info is available. */
- if (flag_guess_branch_prob)
- estimate_probability (&loops);
-
- flow_loops_free (&loops);
- close_dump_file (DFI_bp, print_rtl_with_bb, insns);
- timevar_pop (TV_BRANCH_PROB);
-}
-
-/* Do optimizations based on expression value profiles. */
-static void
-rest_of_handle_value_profile_transformations (tree decl, rtx insns)
-{
- open_dump_file (DFI_vpt, decl);
- timevar_push (TV_VPT);
-
- if (value_profile_transformations ())
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- timevar_pop (TV_VPT);
- close_dump_file (DFI_vpt, print_rtl_with_bb, insns);
-}
-
-/* Do control and data flow analysis; write some of the results to the
- dump file. */
-static void
-rest_of_handle_cfg (tree decl, rtx insns)
-{
- open_dump_file (DFI_cfg, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- if (optimize)
- cleanup_cfg (CLEANUP_EXPENSIVE
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
-
- /* It may make more sense to mark constant functions after dead code is
- eliminated by life_analysis, but we need to do it early, as -fprofile-arcs
- may insert code making function non-constant, but we still must consider
- it as constant, otherwise -fbranch-probabilities will not read data back.
-
- life_analysis rarely eliminates modification of external memory.
- */
- if (optimize)
- mark_constant_function ();
-
- close_dump_file (DFI_cfg, print_rtl_with_bb, insns);
-}
-
-/* Purge addressofs. */
-static void
-rest_of_handle_addressof (tree decl, rtx insns)
-{
- open_dump_file (DFI_addressof, decl);
-
- purge_addressof (insns);
- if (optimize && purge_all_dead_edges (0))
- delete_unreachable_blocks ();
- reg_scan (insns, max_reg_num (), 1);
-
- close_dump_file (DFI_addressof, print_rtl, insns);
-}
-
-/* We may have potential sibling or tail recursion sites. Select one
- (of possibly multiple) methods of performing the call. */
-static void
-rest_of_handle_sibling_calls (rtx insns)
-{
- rtx insn;
- optimize_sibling_and_tail_recursive_calls ();
-
- /* Recompute the CFG as sibling optimization clobbers it randomly. */
- free_bb_for_insn ();
- find_exception_handler_labels ();
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
-
- /* There is pass ordering problem - we must lower NOTE_INSN_PREDICTION
- notes before simplifying cfg and we must do lowering after sibcall
- that unhides parts of RTL chain and cleans up the CFG.
-
- Until sibcall is replaced by tree-level optimizer, lets just
- sweep away the NOTE_INSN_PREDICTION notes that leaked out. */
- for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
- if (GET_CODE (insn) == NOTE
- && NOTE_LINE_NUMBER (insn) == NOTE_INSN_PREDICTION)
- delete_insn (insn);
-
- close_dump_file (DFI_sibling, print_rtl, get_insns ());
-}
-
-/* Perform jump bypassing and control flow optimizations. */
-static void
-rest_of_handle_jump_bypass (tree decl, rtx insns)
-{
- timevar_push (TV_BYPASS);
- open_dump_file (DFI_bypass, decl);
-
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- if (bypass_jumps (rtl_dump_file))
- {
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- delete_trivially_dead_insns (insns, max_reg_num ());
- }
-
- close_dump_file (DFI_bypass, print_rtl_with_bb, insns);
- timevar_pop (TV_BYPASS);
-
- ggc_collect ();
-
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
-}
-
-/* Handle inlining of functions in rest_of_compilation. Return TRUE
- if we must exit rest_of_compilation upon return. */
-static bool
-rest_of_handle_inlining (tree decl)
-{
- rtx insns;
- int inlinable = 0;
- tree parent;
- const char *lose;
-
- /* If we are reconsidering an inline function at the end of
- compilation, skip the stuff for making it inline. */
- if (cfun->rtl_inline_init)
- return 0;
- cfun->rtl_inline_init = 1;
-
- /* If this is nested inside an inlined external function, pretend
- it was only declared. Since we cannot inline such functions,
- generating code for this one is not only not necessary but will
- confuse some debugging output writers. */
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL
- && DECL_INLINE (parent) && DECL_EXTERNAL (parent))
- {
- DECL_INITIAL (decl) = 0;
- return true;
- }
- else if (TYPE_P (parent))
- /* A function in a local class should be treated normally. */
- break;
-
- /* If requested, consider whether to make this function inline. */
- if ((DECL_INLINE (decl) && !flag_no_inline)
- || flag_inline_functions)
- {
- timevar_push (TV_INTEGRATION);
- lose = function_cannot_inline_p (decl);
- timevar_pop (TV_INTEGRATION);
- if (lose || ! optimize)
- {
- if (warn_inline && lose && DECL_INLINE (decl))
- {
- char *msg = concat ("%J", lose, NULL);
- warning (msg, decl);
- free (msg);
- }
- DECL_ABSTRACT_ORIGIN (decl) = 0;
- /* Don't really compile an extern inline function.
- If we can't make it inline, pretend
- it was only declared. */
- if (DECL_EXTERNAL (decl))
- {
- DECL_INITIAL (decl) = 0;
- return true;
- }
- }
- else
- inlinable = DECL_INLINE (decl) = 1;
- }
-
- insns = get_insns ();
-
- /* Dump the rtl code if we are dumping rtl. */
-
- if (open_dump_file (DFI_rtl, decl))
- {
- if (DECL_SAVED_INSNS (decl) && DECL_SAVED_INSNS (decl)->saved_for_inline)
- fprintf (rtl_dump_file, ";; (integrable)\n\n");
- close_dump_file (DFI_rtl, print_rtl, insns);
- }
-
- /* Convert from NOTE_INSN_EH_REGION style notes, and do other
- sorts of eh initialization. Delay this until after the
- initial rtl dump so that we can see the original nesting. */
- convert_from_eh_region_ranges ();
-
- /* If function is inline, and we don't yet know whether to
- compile it by itself, defer decision till end of compilation.
- wrapup_global_declarations will (indirectly) call
- rest_of_compilation again for those functions that need to
- be output. Also defer those functions that we are supposed
- to defer. */
-
- if (inlinable
- || (DECL_INLINE (decl)
- && flag_inline_functions
- && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
- && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))
- && ! flag_keep_inline_functions)
- || DECL_EXTERNAL (decl))))
- DECL_DEFER_OUTPUT (decl) = 1;
-
- if (DECL_INLINE (decl))
- /* DWARF wants separate debugging info for abstract and
- concrete instances of all inline functions, including those
- declared inline but not inlined, and those inlined even
- though they weren't declared inline. Conveniently, that's
- what DECL_INLINE means at this point. */
- (*debug_hooks->deferred_inline_function) (decl);
-
- if (DECL_DEFER_OUTPUT (decl))
- {
- /* If -Wreturn-type, we have to do a bit of compilation. We just
- want to call cleanup the cfg to figure out whether or not we can
- fall off the end of the function; we do the minimum amount of
- work necessary to make that safe. */
- if (warn_return_type)
- {
- int saved_optimize = optimize;
-
- optimize = 0;
- rebuild_jump_labels (insns);
- find_exception_handler_labels ();
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP);
- optimize = saved_optimize;
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- }
-
- set_nothrow_function_flags ();
- if (current_function_nothrow)
- /* Now we know that this can't throw; set the flag for the benefit
- of other functions later in this translation unit. */
- TREE_NOTHROW (current_function_decl) = 1;
-
- timevar_push (TV_INTEGRATION);
- save_for_inline (decl);
- timevar_pop (TV_INTEGRATION);
- DECL_SAVED_INSNS (decl)->inlinable = inlinable;
- return true;
- }
-
- /* If specified extern inline but we aren't inlining it, we are
- done. This goes for anything that gets here with DECL_EXTERNAL
- set, not just things with DECL_INLINE. */
- return (bool) DECL_EXTERNAL (decl);
-}
-
-/* Try to identify useless null pointer tests and delete them. */
-static void
-rest_of_handle_null_pointer (tree decl, rtx insns)
-{
- open_dump_file (DFI_null, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
-
- if (delete_null_pointer_checks (insns))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
-
- close_dump_file (DFI_null, print_rtl_with_bb, insns);
-}
-
-/* Try combining insns through substitution. */
-static void
-rest_of_handle_combine (tree decl, rtx insns)
-{
- int rebuild_jump_labels_after_combine = 0;
-
- timevar_push (TV_COMBINE);
- open_dump_file (DFI_combine, decl);
-
- rebuild_jump_labels_after_combine
- = combine_instructions (insns, max_reg_num ());
-
- /* Combining insns may have turned an indirect jump into a
- direct jump. Rebuild the JUMP_LABEL fields of jumping
- instructions. */
- if (rebuild_jump_labels_after_combine)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- timevar_pop (TV_JUMP);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- }
-
- close_dump_file (DFI_combine, print_rtl_with_bb, insns);
- timevar_pop (TV_COMBINE);
-
- ggc_collect ();
-}
-
-/* Perform life analysis. */
-static void
-rest_of_handle_life (tree decl, rtx insns)
-{
- open_dump_file (DFI_life, decl);
- regclass_init ();
-
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
- life_analysis (insns, rtl_dump_file, PROP_FINAL);
- if (optimize)
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_UPDATE_LIFE
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
- timevar_pop (TV_FLOW);
-
- if (warn_uninitialized)
- {
- uninitialized_vars_warning (DECL_INITIAL (decl));
- if (extra_warnings)
- setjmp_args_warning ();
- }
-
- if (optimize)
- {
- if (!flag_new_regalloc && initialize_uninitialized_subregs ())
- {
- /* Insns were inserted, and possibly pseudos created, so
- things might look a bit different. */
- insns = get_insns ();
- allocate_reg_life_data ();
- update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES,
- PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES);
- }
- }
-
- no_new_pseudos = 1;
-
- close_dump_file (DFI_life, print_rtl_with_bb, insns);
-
- ggc_collect ();
-}
-
-/* Perform common subexpression elimination. Nonzero value from
- `cse_main' means that jumps were simplified and some code may now
- be unreachable, so do jump optimization again. */
-static void
-rest_of_handle_cse (tree decl, rtx insns)
-{
- int tem;
-
- open_dump_file (DFI_cse, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- timevar_push (TV_CSE);
-
- reg_scan (insns, max_reg_num (), 1);
-
- tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- if (tem)
- rebuild_jump_labels (insns);
- if (purge_all_dead_edges (0))
- delete_unreachable_blocks ();
-
- delete_trivially_dead_insns (insns, max_reg_num ());
-
- /* If we are not running more CSE passes, then we are no longer
- expecting CSE to be run. But always rerun it in a cheap mode. */
- cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse;
-
- if (tem || optimize > 1)
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- /* Try to identify useless null pointer tests and delete them. */
- if (flag_delete_null_pointer_checks)
- {
- timevar_push (TV_JUMP);
-
- if (delete_null_pointer_checks (insns))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- timevar_pop (TV_JUMP);
- }
-
- /* The second pass of jump optimization is likely to have
- removed a bunch more instructions. */
- renumber_insns (rtl_dump_file);
-
- timevar_pop (TV_CSE);
- close_dump_file (DFI_cse, print_rtl_with_bb, insns);
-}
-
-/* Run second CSE pass after loop optimizations. */
-static void
-rest_of_handle_cse2 (tree decl, rtx insns)
-{
- int tem;
-
- timevar_push (TV_CSE2);
- open_dump_file (DFI_cse2, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- /* CFG is no longer maintained up-to-date. */
- tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file);
- purge_all_dead_edges (0);
- delete_trivially_dead_insns (insns, max_reg_num ());
-
- if (tem)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- timevar_pop (TV_JUMP);
- }
- reg_scan (insns, max_reg_num (), 0);
- close_dump_file (DFI_cse2, print_rtl_with_bb, insns);
- ggc_collect ();
- timevar_pop (TV_CSE2);
-}
-
-/* Perform global cse. */
-static void
-rest_of_handle_gcse (tree decl, rtx insns)
-{
- int save_csb, save_cfj;
- int tem2 = 0, tem;
-
- timevar_push (TV_GCSE);
- open_dump_file (DFI_gcse, decl);
-
- tem = gcse_main (insns, rtl_dump_file);
- rebuild_jump_labels (insns);
- delete_trivially_dead_insns (insns, max_reg_num ());
-
- save_csb = flag_cse_skip_blocks;
- save_cfj = flag_cse_follow_jumps;
- flag_cse_skip_blocks = flag_cse_follow_jumps = 0;
-
- /* Instantiate any remaining CONSTANT_P_RTX nodes. */
- if (current_function_calls_constant_p)
- purge_builtin_constant_p ();
-
- /* If -fexpensive-optimizations, re-run CSE to clean up things done
- by gcse. */
- if (flag_expensive_optimizations)
- {
- timevar_push (TV_CSE);
- reg_scan (insns, max_reg_num (), 1);
- tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- purge_all_dead_edges (0);
- delete_trivially_dead_insns (insns, max_reg_num ());
- timevar_pop (TV_CSE);
- cse_not_expected = !flag_rerun_cse_after_loop;
- }
-
- /* If gcse or cse altered any jumps, rerun jump optimizations to clean
- things up. Then possibly re-run CSE again. */
- while (tem || tem2)
- {
- tem = tem2 = 0;
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- timevar_pop (TV_JUMP);
-
- if (flag_expensive_optimizations)
- {
- timevar_push (TV_CSE);
- reg_scan (insns, max_reg_num (), 1);
- tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- purge_all_dead_edges (0);
- delete_trivially_dead_insns (insns, max_reg_num ());
- timevar_pop (TV_CSE);
- }
- }
-
- close_dump_file (DFI_gcse, print_rtl_with_bb, insns);
- timevar_pop (TV_GCSE);
-
- ggc_collect ();
- flag_cse_skip_blocks = save_csb;
- flag_cse_follow_jumps = save_cfj;
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
-}
-
-/* Move constant computations out of loops. */
-static void
-rest_of_handle_loop_optimize (tree decl, rtx insns)
-{
- int do_unroll, do_prefetch;
-
- timevar_push (TV_LOOP);
- delete_dead_jumptables ();
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- open_dump_file (DFI_loop, decl);
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
-
- if (flag_unroll_loops)
- do_unroll = 0; /* Having two unrollers is useless. */
- else
- do_unroll = flag_old_unroll_loops ? LOOP_UNROLL : LOOP_AUTO_UNROLL;
- do_prefetch = flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0;
-
- if (flag_rerun_loop_opt)
- {
- cleanup_barriers ();
-
- /* We only want to perform unrolling once. */
- loop_optimize (insns, rtl_dump_file, do_unroll);
- do_unroll = 0;
-
- /* The first call to loop_optimize makes some instructions
- trivially dead. We delete those instructions now in the
- hope that doing so will make the heuristics in loop work
- better and possibly speed up compilation. */
- delete_trivially_dead_insns (insns, max_reg_num ());
-
- /* The regscan pass is currently necessary as the alias
- analysis code depends on this information. */
- reg_scan (insns, max_reg_num (), 1);
- }
- cleanup_barriers ();
- loop_optimize (insns, rtl_dump_file, do_unroll | LOOP_BCT | do_prefetch);
-
- /* Loop can create trivially dead instructions. */
- delete_trivially_dead_insns (insns, max_reg_num ());
- close_dump_file (DFI_loop, print_rtl, insns);
- timevar_pop (TV_LOOP);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
-
- ggc_collect ();
-}
-
-/* Perform loop optimizations. It might be better to do them a bit
- sooner, but we want the profile feedback to work more
- efficiently. */
-static void
-rest_of_handle_loop2 (tree decl, rtx insns)
-{
- struct loops *loops;
- timevar_push (TV_LOOP);
- open_dump_file (DFI_loop2, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
-
- loops = loop_optimizer_init (rtl_dump_file);
-
- if (loops)
- {
- /* The optimizations: */
- if (flag_unswitch_loops)
- unswitch_loops (loops);
-
- if (flag_peel_loops || flag_unroll_loops)
- unroll_and_peel_loops (loops,
- (flag_peel_loops ? UAP_PEEL : 0) |
- (flag_unroll_loops ? UAP_UNROLL : 0) |
- (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0));
-
- loop_optimizer_finalize (loops, rtl_dump_file);
- }
-
- cleanup_cfg (CLEANUP_EXPENSIVE);
- delete_trivially_dead_insns (insns, max_reg_num ());
- reg_scan (insns, max_reg_num (), 0);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_LOOP);
- ggc_collect ();
-}
-
-/* This is called from finish_function (within langhooks.parse_file)
- after each top-level definition is parsed.
- It is supposed to compile that function or variable
- and output the assembler code for it.
- After we return, the tree storage is freed. */
-
-void
-rest_of_compilation (tree decl)
-{
- rtx insns;
-
- timevar_push (TV_REST_OF_COMPILATION);
-
- /* Register rtl specific functions for cfg. */
- rtl_register_cfg_hooks ();
-
- /* Now that we're out of the frontend, we shouldn't have any more
- CONCATs anywhere. */
- generating_concat_p = 0;
-
- /* When processing delayed functions, prepare_function_start() won't
- have been run to re-initialize it. */
- cse_not_expected = ! optimize;
-
- /* First, make sure that NOTE_BLOCK is set correctly for each
- NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */
- if (!cfun->x_whole_function_mode_p)
- identify_blocks ();
-
- /* In function-at-a-time mode, we do not attempt to keep the BLOCK
- tree in sensible shape. So, we just recalculate it here. */
- if (cfun->x_whole_function_mode_p)
- reorder_blocks ();
-
- init_flow ();
-
- if (rest_of_handle_inlining (decl))
- goto exit_rest_of_compilation;
-
- /* If we're emitting a nested function, make sure its parent gets
- emitted as well. Doing otherwise confuses debug info. */
- {
- tree parent;
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL)
- TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1;
- }
-
- /* We are now committed to emitting code for this function. Do any
- preparation, such as emitting abstract debug info for the inline
- before it gets mangled by optimization. */
- if (cgraph_function_possibly_inlined_p (decl))
- (*debug_hooks->outlining_inline_function) (decl);
-
- /* Remove any notes we don't need. That will make iterating
- over the instruction sequence faster, and allow the garbage
- collector to reclaim the memory used by the notes. */
- remove_unnecessary_notes ();
- reorder_blocks ();
-
- ggc_collect ();
-
- /* Initialize some variables used by the optimizers. */
- init_function_for_compilation ();
-
- if (! DECL_DEFER_OUTPUT (decl))
- TREE_ASM_WRITTEN (decl) = 1;
-
- /* Now that integrate will no longer see our rtl, we need not
- distinguish between the return value of this function and the
- return value of called functions. Also, we can remove all SETs
- of subregs of hard registers; they are only here because of
- integrate. Also, we can now initialize pseudos intended to
- carry magic hard reg data throughout the function. */
- rtx_equal_function_value_matters = 0;
- purge_hard_subreg_sets (get_insns ());
-
- /* Early return if there were errors. We can run afoul of our
- consistency checks, and there's not really much point in fixing them.
- Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */
- if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
- || errorcount || sorrycount)
- goto exit_rest_of_compilation;
-
- timevar_push (TV_JUMP);
- open_dump_file (DFI_sibling, decl);
- insns = get_insns ();
- rebuild_jump_labels (insns);
- find_exception_handler_labels ();
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
-
- delete_unreachable_blocks ();
-
- /* We have to issue these warnings now already, because CFG cleanups
- further down may destroy the required information. */
- check_function_return_warnings ();
-
- /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */
- if (flag_guess_branch_prob)
- {
- timevar_push (TV_BRANCH_PROB);
- note_prediction_to_br_prob ();
- timevar_pop (TV_BRANCH_PROB);
- }
-
- if (flag_optimize_sibling_calls)
- rest_of_handle_sibling_calls (insns);
-
- timevar_pop (TV_JUMP);
-
- insn_locators_initialize ();
- /* Complete generation of exception handling code. */
- if (doing_eh (0))
- {
- timevar_push (TV_JUMP);
- open_dump_file (DFI_eh, decl);
-
- finish_eh_generation ();
-
- close_dump_file (DFI_eh, print_rtl, get_insns ());
- timevar_pop (TV_JUMP);
- }
-
- /* Delay emitting hard_reg_initial_value sets until after EH landing pad
- generation, which might create new sets. */
- emit_initial_value_sets ();
-
-#ifdef FINALIZE_PIC
- /* If we are doing position-independent code generation, now
- is the time to output special prologues and epilogues.
- We do not want to do this earlier, because it just clutters
- up inline functions with meaningless insns. */
- if (flag_pic)
- FINALIZE_PIC;
-#endif
-
- insns = get_insns ();
-
- /* Copy any shared structure that should not be shared. */
- unshare_all_rtl (current_function_decl, insns);
-
-#ifdef SETJMP_VIA_SAVE_AREA
- /* This must be performed before virtual register instantiation.
- Please be aware the everything in the compiler that can look
- at the RTL up to this point must understand that REG_SAVE_AREA
- is just like a use of the REG contained inside. */
- if (current_function_calls_alloca)
- optimize_save_area_alloca (insns);
-#endif
-
- /* Instantiate all virtual registers. */
- instantiate_virtual_regs (current_function_decl, insns);
-
- open_dump_file (DFI_jump, decl);
-
- /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
- are initialized and to compute whether control can drop off the end
- of the function. */
-
- timevar_push (TV_JUMP);
- /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this
- before jump optimization switches branch directions. */
- if (flag_guess_branch_prob)
- expected_value_to_br_prob ();
-
- reg_scan (insns, max_reg_num (), 0);
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- delete_trivially_dead_insns (insns, max_reg_num ());
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
-
- if (optimize)
- {
- free_bb_for_insn ();
- copy_loop_headers (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- }
- purge_line_number_notes (insns);
-
- timevar_pop (TV_JUMP);
- close_dump_file (DFI_jump, print_rtl, insns);
-
- /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
- if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
- goto exit_rest_of_compilation;
-
- timevar_push (TV_JUMP);
-
- if (optimize)
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
-
- if (flag_delete_null_pointer_checks)
- rest_of_handle_null_pointer (decl, insns);
-
- /* Jump optimization, and the removal of NULL pointer checks, may
- have reduced the number of instructions substantially. CSE, and
- future passes, allocate arrays whose dimensions involve the
- maximum instruction UID, so if we can reduce the maximum UID
- we'll save big on memory. */
- renumber_insns (rtl_dump_file);
- timevar_pop (TV_JUMP);
-
- close_dump_file (DFI_jump, print_rtl_with_bb, insns);
-
- ggc_collect ();
-
- if (optimize > 0)
- rest_of_handle_cse (decl, insns);
-
- rest_of_handle_addressof (decl, insns);
-
- ggc_collect ();
-
- if (optimize > 0)
- {
- if (flag_gcse)
- rest_of_handle_gcse (decl, insns);
-
- if (flag_loop_optimize)
- rest_of_handle_loop_optimize (decl, insns);
-
- if (flag_gcse)
- rest_of_handle_jump_bypass (decl, insns);
- }
-
- timevar_push (TV_FLOW);
-
- rest_of_handle_cfg (decl, insns);
-
- if (optimize > 0
- || profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- {
- rest_of_handle_branch_prob (decl, insns);
-
- if (flag_branch_probabilities
- && flag_profile_values
- && flag_value_profile_transformations)
- rest_of_handle_value_profile_transformations (decl, insns);
-
- /* Remove the death notes created for vpt. */
- if (flag_profile_values)
- count_or_remove_death_notes (NULL, 1);
- }
-
- if (optimize > 0)
- rest_of_handle_if_conversion (decl, insns);
-
- if (flag_tracer)
- rest_of_handle_tracer (decl, insns);
-
- if (optimize > 0
- && (flag_unswitch_loops
- || flag_peel_loops
- || flag_unroll_loops))
- rest_of_handle_loop2 (decl, insns);
-
- if (flag_web)
- rest_of_handle_web (decl, insns);
-
- if (flag_rerun_cse_after_loop)
- rest_of_handle_cse2 (decl, insns);
-
- cse_not_expected = 1;
-
- rest_of_handle_life (decl, insns);
-
- if (optimize > 0)
- rest_of_handle_combine (decl, insns);
-
- if (flag_if_conversion)
- rest_of_handle_if_after_combine (decl, insns);
-
- if (optimize > 0 && (flag_regmove || flag_expensive_optimizations))
- rest_of_handle_regmove (decl, insns);
-
- /* Do unconditional splitting before register allocation to allow machine
- description to add extra information not needed previously. */
- split_all_insns (1);
-
-#ifdef OPTIMIZE_MODE_SWITCHING
- timevar_push (TV_MODE_SWITCH);
-
- no_new_pseudos = 0;
- optimize_mode_switching (NULL);
- no_new_pseudos = 1;
-
- timevar_pop (TV_MODE_SWITCH);
-#endif
-
- /* Any of the several passes since flow1 will have munged register
- lifetime data a bit. We need it to be up to date for scheduling
- (see handling of reg_known_equiv in init_alias_analysis). */
- recompute_reg_usage (insns, !optimize_size);
-
-#ifdef INSN_SCHEDULING
- rest_of_handle_sched (decl, insns);
-#endif
-
- /* Determine if the current function is a leaf before running reload
- since this can impact optimizations done by the prologue and
- epilogue thus changing register elimination offsets. */
- current_function_is_leaf = leaf_function_p ();
-
- timevar_push (TV_LOCAL_ALLOC);
- open_dump_file (DFI_lreg, decl);
-
- if (flag_new_regalloc)
- {
- if (rest_of_handle_new_regalloc (decl, insns))
- goto exit_rest_of_compilation;
- }
- else
- {
- if (rest_of_handle_old_regalloc (decl, insns))
- goto exit_rest_of_compilation;
- }
-
- ggc_collect ();
-
- open_dump_file (DFI_postreload, decl);
-
- /* Do a very simple CSE pass over just the hard registers. */
- if (optimize > 0)
- {
- timevar_push (TV_RELOAD_CSE_REGS);
- reload_cse_regs (insns);
- timevar_pop (TV_RELOAD_CSE_REGS);
- }
-
- close_dump_file (DFI_postreload, print_rtl_with_bb, insns);
-
- /* Re-create the death notes which were deleted during reload. */
- timevar_push (TV_FLOW2);
- open_dump_file (DFI_flow2, decl);
-
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
-
- /* If optimizing, then go ahead and split insns now. */
-#ifndef STACK_REGS
- if (optimize > 0)
-#endif
- split_all_insns (0);
-
- if (flag_branch_target_load_optimize)
- {
- open_dump_file (DFI_branch_target_load, decl);
-
- branch_target_load_optimize (insns, false);
-
- close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns);
-
- ggc_collect ();
- }
-
- if (optimize)
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- /* On some machines, the prologue and epilogue code, or parts thereof,
- can be represented as RTL. Doing so lets us schedule insns between
- it and the rest of the code and also allows delayed branch
- scheduling to operate in the epilogue. */
- thread_prologue_and_epilogue_insns (insns);
- epilogue_completed = 1;
-
- if (optimize)
- {
- life_analysis (insns, rtl_dump_file, PROP_FINAL);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE
- | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0));
-
- /* This is kind of a heuristic. We need to run combine_stack_adjustments
- even for machines with possibly nonzero RETURN_POPS_ARGS
- and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having
- push instructions will have popping returns. */
-#ifndef PUSH_ROUNDING
- if (!ACCUMULATE_OUTGOING_ARGS)
-#endif
- combine_stack_adjustments ();
-
- ggc_collect ();
- }
-
- flow2_completed = 1;
-
- close_dump_file (DFI_flow2, print_rtl_with_bb, insns);
- timevar_pop (TV_FLOW2);
-
-#ifdef HAVE_peephole2
- if (optimize > 0 && flag_peephole2)
- {
- timevar_push (TV_PEEPHOLE2);
- open_dump_file (DFI_peephole2, decl);
-
- peephole2_optimize (rtl_dump_file);
-
- close_dump_file (DFI_peephole2, print_rtl_with_bb, insns);
- timevar_pop (TV_PEEPHOLE2);
- }
-#endif
-
- if (optimize > 0)
- {
- if (flag_rename_registers || flag_cprop_registers)
- rest_of_handle_regrename (decl, insns);
-
- rest_of_handle_reorder_blocks (decl, insns);
- }
-
- if (flag_if_conversion2)
- {
- timevar_push (TV_IFCVT2);
- open_dump_file (DFI_ce3, decl);
-
- if_convert (1);
-
- close_dump_file (DFI_ce3, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT2);
- }
-
- if (flag_branch_target_load_optimize2)
- {
- /* Leave this a warning for now so that it is possible to experiment
- with running this pass twice. In 3.6, we should either make this
- an error, or use separate dump files. */
- if (flag_branch_target_load_optimize)
- warning ("branch target register load optimization is not intended "
- "to be run twice");
-
- open_dump_file (DFI_branch_target_load, decl);
-
- branch_target_load_optimize (insns, true);
-
- close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns);
-
- ggc_collect ();
- }
-
-#ifdef INSN_SCHEDULING
- if (optimize > 0 && flag_schedule_insns_after_reload)
- rest_of_handle_sched2 (decl, insns);
-#endif
-
-#ifdef LEAF_REGISTERS
- current_function_uses_only_leaf_regs
- = optimize > 0 && only_leaf_regs_used () && leaf_function_p ();
-#endif
-
-#ifdef STACK_REGS
- rest_of_handle_stack_regs (decl, insns);
-#endif
-
- compute_alignments ();
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
-
- if (targetm.machine_dependent_reorg != 0)
- rest_of_handle_machine_reorg (decl, insns);
-
- purge_line_number_notes (insns);
- cleanup_barriers ();
-
-#ifdef DELAY_SLOTS
- if (optimize > 0 && flag_delayed_branch)
- rest_of_handle_delay_slots (decl, insns);
-#endif
-
-#if defined (HAVE_ATTR_length) && !defined (STACK_REGS)
- timevar_push (TV_SHORTEN_BRANCH);
- split_all_insns_noflow ();
- timevar_pop (TV_SHORTEN_BRANCH);
-#endif
-
- convert_to_eh_region_ranges ();
-
- /* Shorten branches. */
- timevar_push (TV_SHORTEN_BRANCH);
- shorten_branches (get_insns ());
- timevar_pop (TV_SHORTEN_BRANCH);
-
- set_nothrow_function_flags ();
- if (current_function_nothrow)
- /* Now we know that this can't throw; set the flag for the benefit
- of other functions later in this translation unit. */
- TREE_NOTHROW (current_function_decl) = 1;
-
- rest_of_handle_final (decl, insns);
-
- /* Write DBX symbols if requested. */
-
- /* Note that for those inline functions where we don't initially
- know for certain that we will be generating an out-of-line copy,
- the first invocation of this routine (rest_of_compilation) will
- skip over this code by doing a `goto exit_rest_of_compilation;'.
- Later on, wrapup_global_declarations will (indirectly) call
- rest_of_compilation again for those inline functions that need
- to have out-of-line copies generated. During that call, we
- *will* be routed past here. */
-
- timevar_push (TV_SYMOUT);
- (*debug_hooks->function_decl) (decl);
- timevar_pop (TV_SYMOUT);
-
- exit_rest_of_compilation:
-
- coverage_end_function ();
-
- /* In case the function was not output,
- don't leave any temporary anonymous types
- queued up for sdb output. */
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_types (NULL_TREE);
-#endif
-
- reload_completed = 0;
- epilogue_completed = 0;
- flow2_completed = 0;
- no_new_pseudos = 0;
-
- timevar_push (TV_FINAL);
-
- /* Clear out the insn_length contents now that they are no
- longer valid. */
- init_insn_lengths ();
-
- /* Show no temporary slots allocated. */
- init_temp_slots ();
-
- free_basic_block_vars (0);
- free_bb_for_insn ();
-
- timevar_pop (TV_FINAL);
-
- if ((*targetm.binds_local_p) (current_function_decl))
- {
- int pref = cfun->preferred_stack_boundary;
- if (cfun->recursive_call_emit
- && cfun->stack_alignment_needed > cfun->preferred_stack_boundary)
- pref = cfun->stack_alignment_needed;
- cgraph_rtl_info (current_function_decl)->preferred_incoming_stack_boundary
- = pref;
- }
-
- /* Make sure volatile mem refs aren't considered valid operands for
- arithmetic insns. We must call this here if this is a nested inline
- function, since the above code leaves us in the init_recog state
- (from final.c), and the function context push/pop code does not
- save/restore volatile_ok.
-
- ??? Maybe it isn't necessary for expand_start_function to call this
- anymore if we do it here? */
-
- init_recog_no_volatile ();
-
- /* We're done with this function. Free up memory if we can. */
- free_after_parsing (cfun);
- if (! DECL_DEFER_OUTPUT (decl))
- {
- free_after_compilation (cfun);
- DECL_SAVED_INSNS (decl) = 0;
- }
- cfun = 0;
-
- ggc_collect ();
-
- timevar_pop (TV_REST_OF_COMPILATION);
-}
-
-/* Display help for target options. */
-void
-display_target_options (void)
-{
- int undoc, i;
- static bool displayed = false;
-
- /* Avoid double printing for --help --target-help. */
- if (displayed)
- return;
-
- displayed = true;
-
- if (ARRAY_SIZE (target_switches) > 1
-#ifdef TARGET_OPTIONS
- || ARRAY_SIZE (target_options) > 1
-#endif
- )
- {
- int doc = 0;
-
- undoc = 0;
-
- printf (_("\nTarget specific options:\n"));
-
- for (i = ARRAY_SIZE (target_switches); i--;)
- {
- const char *option = target_switches[i].name;
- const char *description = target_switches[i].description;
-
- if (option == NULL || *option == 0)
- continue;
- else if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" -m%-23s [undocumented]\n"), option);
- }
- else if (*description != 0)
- doc += printf (" -m%-23s %s\n", option, _(description));
- }
-
-#ifdef TARGET_OPTIONS
- for (i = ARRAY_SIZE (target_options); i--;)
- {
- const char *option = target_options[i].prefix;
- const char *description = target_options[i].description;
-
- if (option == NULL || *option == 0)
- continue;
- else if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" -m%-23s [undocumented]\n"), option);
- }
- else if (*description != 0)
- doc += printf (" -m%-23s %s\n", option, _(description));
- }
-#endif
- if (undoc)
- {
- if (doc)
- printf (_("\nThere are undocumented target specific options as well.\n"));
- else
- printf (_(" They exist, but they are not documented.\n"));
- }
- }
-}
-
-/* Parse a -d... command line switch. */
-
-void
-decode_d_option (const char *arg)
-{
- int i, c, matched;
-
- while (*arg)
- switch (c = *arg++)
- {
- case 'a':
- for (i = 0; i < (int) DFI_MAX; ++i)
- dump_file[i].enabled = 1;
- break;
- case 'A':
- flag_debug_asm = 1;
- break;
- case 'p':
- flag_print_asm_name = 1;
- break;
- case 'P':
- flag_dump_rtl_in_asm = 1;
- flag_print_asm_name = 1;
- break;
- case 'v':
- graph_dump_format = vcg;
- break;
- case 'x':
- rtl_dump_and_exit = 1;
- break;
- case 'y':
- set_yydebug = 1;
- break;
- case 'D': /* These are handled by the preprocessor. */
- case 'I':
- break;
- case 'H':
- setup_core_dumping();
- break;
-
- default:
- matched = 0;
- for (i = 0; i < (int) DFI_MAX; ++i)
- if (c == dump_file[i].debug_switch)
- {
- dump_file[i].enabled = 1;
- matched = 1;
- }
-
- if (! matched)
- warning ("unrecognized gcc debugging option: %c", c);
- break;
- }
-}
-
-/* Indexed by enum debug_info_type. */
-const char *const debug_type_names[] =
-{
- "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms"
-};
-
-/* Decode -m switches. */
-/* Decode the switch -mNAME. */
+/* Decode -m switches. */
+/* Decode the switch -mNAME. */
void
set_target_switch (const char *name)
size_t i;
#endif
char *result, *r;
-
+
*len = sizeof (target_flags) + 2;
#ifdef TARGET_OPTIONS
for (i = 0; i < ARRAY_SIZE (target_options); i++)
r += 2;
memcpy (r, &target_flags, sizeof (target_flags));
r += sizeof (target_flags);
-
+
#ifdef TARGET_OPTIONS
for (i = 0; i < ARRAY_SIZE (target_options); i++)
{
const char *data = (const char *)data_p;
const char *flag_that_differs = NULL;
size_t i;
-
+
/* -fpic and -fpie also usually make a PCH invalid. */
if (data[0] != flag_pic)
return _("created and used with different settings of -fpic");
}
data += sizeof (target_flags);
len -= sizeof (target_flags);
-
+
/* Check string options. */
#ifdef TARGET_OPTIONS
for (i = 0; i < ARRAY_SIZE (target_options); i++)
#endif
return NULL;
-
+
make_message:
{
char *r;
{
tree t = va_arg (*text->args_ptr, tree);
const char *n = DECL_NAME (t)
- ? (*lang_hooks.decl_printable_name) (t, 2)
+ ? lang_hooks.decl_printable_name (t, 2)
: "<anonymous>";
pp_string (pp, n);
}
table. */
init_ggc ();
init_stringpool ();
+ linemap_init (&line_table);
init_ttree ();
/* Initialize register usage now so switches may override. */
initialization based on the command line options. This hook also
sets the original filename if appropriate (e.g. foo.i -> foo.c)
so we can correctly initialize debug output. */
- no_backend = (*lang_hooks.post_options) (&main_input_filename);
+ no_backend = lang_hooks.post_options (&main_input_filename);
input_filename = main_input_filename;
#ifdef OVERRIDE_OPTIONS
/* Now we know write_symbols, set up the debug hooks based on it.
By default we do nothing for debug output. */
+ if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG)
+ default_debug_hooks = &do_nothing_debug_hooks;
+#if defined(DBX_DEBUGGING_INFO)
+ else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG)
+ default_debug_hooks = &dbx_debug_hooks;
+#endif
+#if defined(XCOFF_DEBUGGING_INFO)
+ else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG)
+ default_debug_hooks = &xcoff_debug_hooks;
+#endif
+#ifdef SDB_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG)
+ default_debug_hooks = &sdb_debug_hooks;
+#endif
+#ifdef DWARF2_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG)
+ default_debug_hooks = &dwarf2_debug_hooks;
+#endif
+#ifdef VMS_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG
+ || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG)
+ default_debug_hooks = &vmsdbg_debug_hooks;
+#endif
+
if (write_symbols == NO_DEBUG)
debug_hooks = &do_nothing_debug_hooks;
#if defined(DBX_DEBUGGING_INFO)
else if (write_symbols == SDB_DEBUG)
debug_hooks = &sdb_debug_hooks;
#endif
-#ifdef DWARF_DEBUGGING_INFO
- else if (write_symbols == DWARF_DEBUG)
- debug_hooks = &dwarf_debug_hooks;
-#endif
#ifdef DWARF2_DEBUGGING_INFO
else if (write_symbols == DWARF2_DEBUG)
debug_hooks = &dwarf2_debug_hooks;
error ("target system does not support the \"%s\" debug format",
debug_type_names[write_symbols]);
+ /* Now we know which debug output will be used so we can set
+ flag_var_tracking, flag_rename_registers and flag_web if the user has
+ not specified them. */
+ if (debug_info_level < DINFO_LEVEL_NORMAL
+ || debug_hooks->var_location == do_nothing_debug_hooks.var_location)
+ {
+ if (flag_var_tracking == 1)
+ {
+ if (debug_info_level < DINFO_LEVEL_NORMAL)
+ warning ("variable tracking requested, but useless unless "
+ "producing debug info");
+ else
+ warning ("variable tracking requested, but not supported "
+ "by this debug format");
+ }
+ flag_var_tracking = 0;
+ }
+
+ if (flag_rename_registers == AUTODETECT_FLAG_VAR_TRACKING)
+ flag_rename_registers = default_debug_hooks->var_location
+ != do_nothing_debug_hooks.var_location;
+
+ if (flag_web == AUTODETECT_FLAG_VAR_TRACKING)
+ flag_web = optimize >= 2 && (default_debug_hooks->var_location
+ != do_nothing_debug_hooks.var_location);
+
+ if (flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING)
+ flag_var_tracking = optimize >= 1;
+
/* If auxiliary info generation is desired, open the output file.
This goes in the same directory as the source file--unlike
all the other output files. */
dump_base_name = name ? name : "gccdump";
/* Other front-end initialization. */
- if ((*lang_hooks.init) () == 0)
+ if (lang_hooks.init () == 0)
return 0;
init_asm_output (name);
front end is initialized. */
init_eh ();
init_optabs ();
+ init_optimization_passes ();
/* The following initialization functions need to generate rtl, so
provide a dummy function context for them. */
fatal_error ("error closing %s: %m", asm_file_name);
}
- /* Do whatever is necessary to finish printing the graphs. */
- if (graph_dump_format != no_graph)
- {
- int i;
-
- for (i = 0; i < (int) DFI_MAX; ++i)
- if (dump_file[i].initialized && dump_file[i].graph_dump_p)
- {
- char seq[16];
- char *suffix;
-
- sprintf (seq, DUMPFILE_FORMAT, i);
- suffix = concat (seq, dump_file[i].extension, NULL);
- finish_graph_dump_file (dump_base_name, suffix);
- free (suffix);
- }
- }
+ finish_optimization_passes ();
if (mem_report)
{
ggc_print_statistics ();
stringpool_statistics ();
dump_tree_statistics ();
+ dump_rtx_statistics ();
+ dump_varray_statistics ();
+ dump_alloc_pool_statistics ();
+ dump_ggc_loc_statistics ();
}
/* Free up memory for the benefit of leak detectors. */
free_reg_info ();
/* Language-specific end of compilation actions. */
- (*lang_hooks.finish) ();
+ lang_hooks.finish ();
}
/* Initialize the compiler, and compile the input file. */
/* Language-dependent initialization. Returns true on success. */
if (lang_dependent_init (main_input_filename))
- {
- if (flag_unit_at_a_time)
- {
- open_dump_file (DFI_cgraph, NULL);
- cgraph_dump_file = rtl_dump_file;
- rtl_dump_file = NULL;
- }
-
- compile_file ();
-
- if (flag_unit_at_a_time)
- {
- rtl_dump_file = cgraph_dump_file;
- cgraph_dump_file = NULL;
- close_dump_file (DFI_cgraph, NULL, NULL_RTX);
- }
- }
+ compile_file ();
finalize ();
}
OSDN Git Service
