/* 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, 2004, 2005, 2006
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This is the top level of cc1/c++.
It parses command args, opens files, invokes the various passes
#include "value-prof.h"
#include "alloc-pool.h"
#include "tree-mudflap.h"
+#include "tree-pass.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
static void setup_core_dumping (void);
static void compile_file (void);
-static int print_single_switch (FILE *, int, int, const char *,
- const char *, const char *,
- const char *, const char *);
-static void print_switch_values (FILE *, int, int, const char *,
- const char *, const char *);
-
/* Nonzero to dump debug info whilst parsing (-dy option). */
static int set_yydebug;
location_t input_location;
-struct line_maps line_table;
-
-/* Nonzero if it is unsafe to create any new pseudo registers. */
-int no_new_pseudos;
+struct line_maps *line_table;
/* Stack of currently pending input files. */
/* Incremented on each change to input_file_stack. */
int input_file_stack_tick;
+/* Record of input_file_stack at each tick. */
+typedef struct file_stack *fs_p;
+DEF_VEC_P(fs_p);
+DEF_VEC_ALLOC_P(fs_p,heap);
+static VEC(fs_p,heap) *input_file_stack_history;
+
+/* Whether input_file_stack has been restored to a previous state (in
+ which case there should be no more pushing). */
+static bool input_file_stack_restored;
+
/* Name to use as base of names for dump output files. */
const char *dump_base_name;
const char *aux_base_name;
-/* 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. */
-
-extern int target_flags;
-
/* A mask of target_flags that includes bit X if X was set or cleared
on the command line. */
int flag_detailed_statistics = 0;
/* A random sequence of characters, unless overridden by user. */
-const char *flag_random_seed;
+static const char *flag_random_seed;
/* A local time stamp derived from the time of compilation. It will be
zero if the system cannot provide a time. It will be -1u, if the
the support provided depends on the backend. */
rtx stack_limit_rtx;
-/* If one, renumber instruction UIDs to reduce the number of
- unused UIDs if there are a lot of instructions. If greater than
- one, unconditionally renumber instruction UIDs. */
-int flag_renumber_insns = 1;
-
/* Nonzero if we should track variables. When
flag_var_tracking == AUTODETECT_VALUE it will be set according
to optimize, debug_info_level and debug_hooks in process_options (). */
int align_labels_max_skip;
int align_functions_log;
-/* Like align_functions_log above, but used by front-ends to force the
- minimum function alignment. Zero means no alignment is forced. */
-int force_align_functions_log;
-
typedef struct
{
const char *const string;
static const param_info lang_independent_params[] = {
#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \
- { OPTION, DEFAULT, MIN, MAX, HELP },
+ { OPTION, DEFAULT, false, MIN, MAX, HELP },
#include "params.def"
#undef DEFPARAM
- { NULL, 0, 0, 0, NULL }
+ { NULL, 0, false, 0, 0, NULL }
};
/* Output files for assembler code (real compiler output)
fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2));
fflush (stderr);
pp_needs_newline (global_dc->printer) = true;
- diagnostic_set_last_function (global_dc);
+ diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL);
}
}
-/* Set up a default flag_random_seed and local_tick, unless the user
- already specified one. */
+/* Initialize local_tick with the time of day, or -1 if
+ flag_random_seed is set. */
static void
-randomize (void)
+init_local_tick (void)
{
if (!flag_random_seed)
{
- 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;
+ struct timeval tv;
- gettimeofday (&tv, NULL);
+ gettimeofday (&tv, NULL);
local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
#else
local_tick = (unsigned) now;
}
#endif
- value = local_tick ^ getpid ();
-
- sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
- flag_random_seed = random_seed;
}
- else if (!local_tick)
+ else
local_tick = -1;
}
+/* Set up a default flag_random_seed and local_tick, unless the user
+ already specified one. Must be called after init_local_tick. */
+
+static void
+init_random_seed (void)
+{
+ unsigned HOST_WIDE_INT value;
+ static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
+
+ value = local_tick ^ getpid ();
+
+ sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
+ flag_random_seed = random_seed;
+}
+
+/* Obtain the random_seed string. Unless NOINIT, initialize it if
+ it's not provided in the command line. */
+
+const char *
+get_random_seed (bool noinit)
+{
+ if (!flag_random_seed && !noinit)
+ init_random_seed ();
+ return flag_random_seed;
+}
+
+/* Modify the random_seed string to VAL. Return its previous
+ value. */
+
+const char *
+set_random_seed (const char *val)
+{
+ const char *old = flag_random_seed;
+ flag_random_seed = val;
+ return old;
+}
/* Decode the string P as an integral parameter.
If the string is indeed an integer return its numeric value else
if (input_name == NULL)
input_name = "<stdin>";
+ else
+ input_name = remap_debug_filename (input_name);
len = strlen (input_name);
na = input_name + len;
if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
{
- struct cgraph_varpool_node *node;
+ struct varpool_node *node;
bool needed = true;
- node = cgraph_varpool_node (decl);
+ node = varpool_node (decl);
if (node->finalized)
needed = false;
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
pedwarn ("%q+F used but never defined", decl);
else
- warning (0, "%q+F declared %<static%> but never defined", decl);
+ warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl);
/* This symbol is effectively an "extern" declaration now. */
TREE_PUBLIC (decl) = 1;
assemble_external (decl);
&& ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
/* Otherwise, ask the language. */
&& lang_hooks.decls.warn_unused_global (decl))
- warning (0, "%q+D defined but not used", decl);
+ warning ((TREE_CODE (decl) == FUNCTION_DECL)
+ ? OPT_Wunused_function
+ : OPT_Wunused_variable,
+ "%q+D defined but not used", decl);
}
/* Issue appropriate warnings for the global declarations in VEC (of
{
expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node));
warning (OPT_Wdeprecated_declarations,
- "%qs is deprecated (declared at %s:%d)",
- IDENTIFIER_POINTER (DECL_NAME (node)),
- xloc.file, xloc.line);
+ "%qD is deprecated (declared at %s:%d)",
+ node, xloc.file, xloc.line);
}
else if (TYPE_P (node))
{
{
struct file_stack *fs;
+ gcc_assert (!input_file_stack_restored);
+ if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1))
+ sorry ("GCC supports only %d input file changes", input_file_stack_tick);
+
fs = XNEW (struct file_stack);
fs->location = input_location;
fs->next = input_file_stack;
#endif
input_file_stack = fs;
input_file_stack_tick++;
+ VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack);
}
/* Pop the top entry off the stack of presently open source files.
{
struct file_stack *fs;
+ gcc_assert (!input_file_stack_restored);
+ if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1))
+ sorry ("GCC supports only %d input file changes", input_file_stack_tick);
+
fs = input_file_stack;
input_location = fs->location;
input_file_stack = fs->next;
- free (fs);
input_file_stack_tick++;
+ VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack);
+}
+
+/* Restore the input file stack to its state as of TICK, for the sake
+ of diagnostics after processing the whole input. Once this has
+ been called, push_srcloc and pop_srcloc may no longer be
+ called. */
+void
+restore_input_file_stack (int tick)
+{
+ if (tick == 0)
+ input_file_stack = NULL;
+ else
+ input_file_stack = VEC_index (fs_p, input_file_stack_history, tick - 1);
+ input_file_stack_tick = tick;
+ input_file_stack_restored = true;
}
/* Compile an entire translation unit. Write a file of assembly
what's left of the symbol table output. */
timevar_pop (TV_PARSE);
- if (flag_syntax_only || errorcount || sorrycount)
+ if (flag_syntax_only)
return;
lang_hooks.decls.final_write_globals ();
- cgraph_varpool_assemble_pending_decls ();
+
+ if (errorcount || sorrycount)
+ return;
+
+ varpool_assemble_pending_decls ();
finish_aliases_2 ();
/* This must occur after the loop to output deferred functions.
if (flag_mudflap)
mudflap_finish_file ();
+ /* Likewise for emulated thread-local storage. */
+ if (!targetm.have_tls)
+ emutls_finish ();
+
output_shared_constant_pool ();
output_object_blocks ();
/* Write out any pending weak symbol declarations. */
-
weak_finish ();
/* Do dbx symbols. */
dw2_output_indirect_constants ();
- /* Flush any pending external directives. cgraph did this for
- assemble_external calls from the front end, but the RTL
- expander can also generate them. */
+ /* Flush any pending external directives. */
process_pending_assemble_externals ();
/* Attach a special .ident directive to the end of the file to identify
string is patterned after the ones produced by native SVR4 compilers. */
#ifdef IDENT_ASM_OP
if (!flag_no_ident)
- fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
- IDENT_ASM_OP, version_string);
+ {
+ const char *pkg_version = "(GNU) ";
+
+ if (strcmp ("(GCC) ", pkgversion_string))
+ pkg_version = pkgversion_string;
+ fprintf (asm_out_file, "%s\"GCC: %s%s\"\n",
+ IDENT_ASM_OP, pkg_version, version_string);
+ }
#endif
/* This must be at the end. Some target ports emit end of file directives
{
static const char fmt1[] =
#ifdef __GNUC__
- N_("%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n")
+ N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ")
#else
- N_("%s%s%s version %s (%s) compiled by CC.\n")
+ N_("%s%s%s %sversion %s (%s) compiled by CC, ")
#endif
;
static const char fmt2[] =
+ N_("GMP version %s, MPFR version %s.\n");
+ static const char fmt3[] =
+ N_("warning: %s header version %s differs from library version %s.\n");
+ static const char fmt4[] =
N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n");
#ifndef __VERSION__
#define __VERSION__ "[?]"
fprintf (file,
file == stderr ? _(fmt1) : fmt1,
indent, *indent != 0 ? " " : "",
- lang_hooks.name, version_string, TARGET_NAME,
+ lang_hooks.name, pkgversion_string, version_string, TARGET_NAME,
indent, __VERSION__);
+
+ /* We need to stringify the GMP macro values. Ugh, gmp_version has
+ two string formats, "i.j.k" and "i.j" when k is zero. */
+#define GCC_GMP_STRINGIFY_VERSION3(X) #X
+#define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X)
+#if __GNU_MP_VERSION_PATCHLEVEL == 0
+#define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \
+ GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR)
+#else
+#define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \
+ GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \
+ GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL)
+#endif
fprintf (file,
file == stderr ? _(fmt2) : fmt2,
+ GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING);
+ if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version))
+ fprintf (file,
+ file == stderr ? _(fmt3) : fmt3,
+ "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version);
+ if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ()))
+ fprintf (file,
+ file == stderr ? _(fmt3) : fmt3,
+ "MPFR", MPFR_VERSION_STRING, mpfr_get_version ());
+ fprintf (file,
+ file == stderr ? _(fmt4) : fmt4,
indent, *indent != 0 ? " " : "",
PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE));
}
+#ifdef ASM_COMMENT_START
+static int
+print_to_asm_out_file (print_switch_type type, const char * text)
+{
+ bool prepend_sep = true;
+
+ switch (type)
+ {
+ case SWITCH_TYPE_LINE_END:
+ putc ('\n', asm_out_file);
+ return 1;
+
+ case SWITCH_TYPE_LINE_START:
+ fputs (ASM_COMMENT_START, asm_out_file);
+ return strlen (ASM_COMMENT_START);
+
+ case SWITCH_TYPE_DESCRIPTIVE:
+ if (ASM_COMMENT_START[0] == 0)
+ prepend_sep = false;
+ /* Drop through. */
+ case SWITCH_TYPE_PASSED:
+ case SWITCH_TYPE_ENABLED:
+ if (prepend_sep)
+ fputc (' ', asm_out_file);
+ fprintf (asm_out_file, text);
+ /* No need to return the length here as
+ print_single_switch has already done it. */
+ return 0;
+
+ default:
+ return -1;
+ }
+}
+#endif
+
+static int
+print_to_stderr (print_switch_type type, const char * text)
+{
+ switch (type)
+ {
+ case SWITCH_TYPE_LINE_END:
+ putc ('\n', stderr);
+ return 1;
+
+ case SWITCH_TYPE_LINE_START:
+ return 0;
+
+ case SWITCH_TYPE_PASSED:
+ case SWITCH_TYPE_ENABLED:
+ fputc (' ', stderr);
+ /* Drop through. */
+
+ case SWITCH_TYPE_DESCRIPTIVE:
+ fprintf (stderr, text);
+ /* No need to return the length here as
+ print_single_switch has already done it. */
+ return 0;
+
+ default:
+ return -1;
+ }
+}
+
/* Print an option value and return the adjusted position in the line.
- ??? We don't handle error returns from fprintf (disk full); presumably
- other code will catch a disk full though. */
+ ??? print_fn doesn't handle errors, eg disk full; presumably other
+ code will catch a disk full though. */
static int
-print_single_switch (FILE *file, int pos, int max,
- const char *indent, const char *sep, const char *term,
- const char *type, const char *name)
+print_single_switch (print_switch_fn_type print_fn,
+ int pos,
+ print_switch_type type,
+ const char * text)
{
- /* The ultrix fprintf returns 0 on success, so compute the result we want
- here since we need it for the following test. */
- int len = strlen (sep) + strlen (type) + strlen (name);
+ /* The ultrix fprintf returns 0 on success, so compute the result
+ we want here since we need it for the following test. The +1
+ is for the separator character that will probably be emitted. */
+ int len = strlen (text) + 1;
if (pos != 0
- && pos + len > max)
+ && pos + len > MAX_LINE)
{
- fprintf (file, "%s", term);
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
pos = 0;
}
+
if (pos == 0)
- {
- fprintf (file, "%s", indent);
- pos = strlen (indent);
- }
- fprintf (file, "%s%s%s", sep, type, name);
- pos += len;
- return pos;
+ pos += print_fn (SWITCH_TYPE_LINE_START, NULL);
+
+ print_fn (type, text);
+ return pos + len;
}
-/* Print active target switches to FILE.
+/* Print active target switches using PRINT_FN.
POS is the current cursor position and MAX is the size of a "line".
Each line begins with INDENT and ends with TERM.
Each switch is separated from the next by SEP. */
static void
-print_switch_values (FILE *file, int pos, int max,
- const char *indent, const char *sep, const char *term)
+print_switch_values (print_switch_fn_type print_fn)
{
+ int pos = 0;
size_t j;
const char **p;
/* Fill in the -frandom-seed option, if the user didn't pass it, so
that it can be printed below. This helps reproducibility. */
- randomize ();
+ if (!flag_random_seed)
+ init_random_seed ();
/* Print the options as passed. */
- pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term,
- _("options passed: "), "");
+ pos = print_single_switch (print_fn, pos,
+ SWITCH_TYPE_DESCRIPTIVE, _("options passed: "));
for (p = &save_argv[1]; *p != NULL; p++)
- if (**p == '-')
- {
- /* Ignore these. */
- if (strcmp (*p, "-o") == 0)
- {
- if (p[1] != NULL)
- p++;
+ {
+ if (**p == '-')
+ {
+ /* Ignore these. */
+ if (strcmp (*p, "-o") == 0
+ || strcmp (*p, "-dumpbase") == 0
+ || strcmp (*p, "-auxbase") == 0)
+ {
+ if (p[1] != NULL)
+ p++;
+ continue;
+ }
+
+ if (strcmp (*p, "-quiet") == 0
+ || strcmp (*p, "-version") == 0)
continue;
- }
- if (strcmp (*p, "-quiet") == 0)
- continue;
- if (strcmp (*p, "-version") == 0)
- continue;
- if ((*p)[1] == 'd')
- continue;
-
- pos = print_single_switch (file, pos, max, indent, sep, term, *p, "");
- }
+
+ if ((*p)[1] == 'd')
+ continue;
+ }
+
+ pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p);
+ }
+
if (pos > 0)
- fprintf (file, "%s", term);
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
/* Print the -f and -m options that have been enabled.
We don't handle language specific options but printing argv
should suffice. */
-
- pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term,
- _("options enabled: "), "");
+ pos = print_single_switch (print_fn, 0,
+ SWITCH_TYPE_DESCRIPTIVE, _("options enabled: "));
for (j = 0; j < cl_options_count; j++)
if ((cl_options[j].flags & CL_REPORT)
&& option_enabled (j) > 0)
- pos = print_single_switch (file, pos, max, indent, sep, term,
- "", cl_options[j].opt_text);
+ pos = print_single_switch (print_fn, pos,
+ SWITCH_TYPE_ENABLED, cl_options[j].opt_text);
- fprintf (file, "%s", term);
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
}
/* Open assembly code output file. Do this even if -fsyntax-only is
{
int len = strlen (dump_base_name);
char *dumpname = XNEWVEC (char, len + 6);
+
memcpy (dumpname, dump_base_name, len + 1);
strip_off_ending (dumpname, len);
strcat (dumpname, ".s");
{
targetm.asm_out.file_start ();
+ if (flag_record_gcc_switches)
+ {
+ if (targetm.asm_out.record_gcc_switches)
+ {
+ /* Let the target know that we are about to start recording. */
+ targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE,
+ NULL);
+ /* Now record the switches. */
+ print_switch_values (targetm.asm_out.record_gcc_switches);
+ /* Let the target know that the recording is over. */
+ targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE,
+ NULL);
+ }
+ else
+ inform ("-frecord-gcc-switches is not supported by the current target");
+ }
+
#ifdef ASM_COMMENT_START
if (flag_verbose_asm)
{
- /* Print the list of options in effect. */
+ /* Print the list of switches in effect
+ into the assembler file as comments. */
print_version (asm_out_file, ASM_COMMENT_START);
- print_switch_values (asm_out_file, 0, MAX_LINE,
- ASM_COMMENT_START, " ", "\n");
- /* Add a blank line here so it appears in assembler output but not
- screen output. */
+ print_switch_values (print_to_asm_out_file);
fprintf (asm_out_file, "\n");
}
#endif
pp_string (pp, n);
}
else
- dump_generic_node (pp, t, 0, 0, 0);
+ dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0);
return true;
}
+/* A helper function; used as the reallocator function for cpp's line
+ table. */
+static void *
+realloc_for_line_map (void *ptr, size_t len)
+{
+ return ggc_realloc (ptr, len);
+}
+
/* Initialization of the front end environment, before command line
options are parsed. Signal handlers, internationalization etc.
ARGV0 is main's argv[0]. */
table. */
init_ggc ();
init_stringpool ();
- linemap_init (&line_table);
+ line_table = GGC_NEW (struct line_maps);
+ linemap_init (line_table);
+ line_table->reallocator = realloc_for_line_map;
init_ttree ();
/* Initialize register usage now so switches may override. */
return true;
}
+/* Default the align_* variables to 1 if they're still unset, and
+ set up the align_*_log variables. */
+static void
+init_alignments (void)
+{
+ if (align_loops <= 0)
+ align_loops = 1;
+ if (align_loops_max_skip > align_loops)
+ align_loops_max_skip = align_loops - 1;
+ align_loops_log = floor_log2 (align_loops * 2 - 1);
+ if (align_jumps <= 0)
+ align_jumps = 1;
+ if (align_jumps_max_skip > align_jumps)
+ align_jumps_max_skip = align_jumps - 1;
+ align_jumps_log = floor_log2 (align_jumps * 2 - 1);
+ if (align_labels <= 0)
+ align_labels = 1;
+ align_labels_log = floor_log2 (align_labels * 2 - 1);
+ if (align_labels_max_skip > align_labels)
+ align_labels_max_skip = align_labels - 1;
+ if (align_functions <= 0)
+ align_functions = 1;
+ align_functions_log = floor_log2 (align_functions * 2 - 1);
+}
+
/* Process the options that have been parsed. */
static void
process_options (void)
else
aux_base_name = "gccaux";
- /* Set up the align_*_log variables, defaulting them to 1 if they
- were still unset. */
- if (align_loops <= 0) align_loops = 1;
- if (align_loops_max_skip > align_loops || !align_loops)
- align_loops_max_skip = align_loops - 1;
- align_loops_log = floor_log2 (align_loops * 2 - 1);
- if (align_jumps <= 0) align_jumps = 1;
- if (align_jumps_max_skip > align_jumps || !align_jumps)
- align_jumps_max_skip = align_jumps - 1;
- align_jumps_log = floor_log2 (align_jumps * 2 - 1);
- if (align_labels <= 0) align_labels = 1;
- align_labels_log = floor_log2 (align_labels * 2 - 1);
- if (align_labels_max_skip > align_labels || !align_labels)
- align_labels_max_skip = align_labels - 1;
- if (align_functions <= 0) align_functions = 1;
- align_functions_log = floor_log2 (align_functions * 2 - 1);
-
/* Unrolling all loops implies that standard loop unrolling must also
be done. */
if (flag_unroll_all_loops)
if (flag_asynchronous_unwind_tables)
flag_unwind_tables = 1;
- /* Disable unit-at-a-time mode for frontends not supporting callgraph
- interface. */
- if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function)
- flag_unit_at_a_time = 0;
-
if (!flag_unit_at_a_time)
flag_section_anchors = 0;
{
print_version (stderr, "");
if (! quiet_flag)
- print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
+ print_switch_values (print_to_stderr);
}
if (flag_syntax_only)
if (debug_info_level < DINFO_LEVEL_NORMAL
|| debug_hooks->var_location == do_nothing_debug_hooks.var_location)
{
- if (flag_var_tracking == 1)
+ if (flag_var_tracking == 1
+ || flag_var_tracking_uninit == 1)
{
if (debug_info_level < DINFO_LEVEL_NORMAL)
warning (0, "variable tracking requested, but useless unless "
"by this debug format");
}
flag_var_tracking = 0;
+ flag_var_tracking_uninit = 0;
}
if (flag_rename_registers == AUTODETECT_VALUE)
if (flag_var_tracking == AUTODETECT_VALUE)
flag_var_tracking = optimize >= 1;
+ if (flag_tree_cselim == AUTODETECT_VALUE)
+#ifdef HAVE_conditional_move
+ flag_tree_cselim = 1;
+#else
+ flag_tree_cselim = 0;
+#endif
+
+ /* If the user specifically requested variable tracking with tagging
+ uninitialized variables, we need to turn on variable tracking.
+ (We already determined above that variable tracking is feasible.) */
+ if (flag_var_tracking_uninit)
+ flag_var_tracking = 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. */
if (flag_signaling_nans)
flag_trapping_math = 1;
+ /* We cannot reassociate if we want traps or signed zeros. */
+ if (flag_associative_math && (flag_trapping_math || flag_signed_zeros))
+ {
+ warning (0, "-fassociative-math disabled; other options take precedence");
+ flag_associative_math = 0;
+ }
+
/* With -fcx-limited-range, we do cheap and quick complex arithmetic. */
if (flag_cx_limited_range)
flag_complex_method = 0;
}
}
-/* Initialize the compiler back end. */
+/* This function can be called multiple times to reinitialize the compiler
+ back end when register classes or instruction sets have changed,
+ before each function. */
+static void
+backend_init_target (void)
+{
+ /* Initialize alignment variables. */
+ init_alignments ();
+
+ /* This reinitializes hard_frame_pointer, and calls init_reg_modes_target()
+ to initialize reg_raw_mode[]. */
+ init_emit_regs ();
+
+ /* This invokes target hooks to set fixed_reg[] etc, which is
+ mode-dependent. */
+ init_regs ();
+
+ /* This depends on stack_pointer_rtx. */
+ init_fake_stack_mems ();
+
+ /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is
+ mode-dependent. */
+ init_alias_target ();
+
+ /* Depends on HARD_FRAME_POINTER_REGNUM. */
+ init_reload ();
+
+ /* The following initialization functions need to generate rtl, so
+ provide a dummy function context for them. */
+ init_dummy_function_start ();
+
+ /* rtx_cost is mode-dependent, so cached values need to be recomputed
+ on a mode change. */
+ init_expmed ();
+
+ /* We may need to recompute regno_save_code[] and regno_restore_code[]
+ after a mode change as well. */
+ if (flag_caller_saves)
+ init_caller_save ();
+ expand_dummy_function_end ();
+}
+
+/* Initialize the compiler back end. This function is called only once,
+ when starting the compiler. */
static void
backend_init (void)
{
|| flag_test_coverage);
init_rtlanal ();
- init_regs ();
- init_fake_stack_mems ();
- init_alias_once ();
- init_reload ();
+ init_inline_once ();
init_varasm_once ();
+ save_register_info ();
+
+ /* Initialize the target-specific back end pieces. */
+ backend_init_target ();
+}
+
+/* Initialize things that are both lang-dependent and target-dependent.
+ This function can be called more than once if target parameters change. */
+static void
+lang_dependent_init_target (void)
+{
+ /* This creates various _DECL nodes, so needs to be called after the
+ front end is initialized. It also depends on the HAVE_xxx macros
+ generated from the target machine description. */
+ init_optabs ();
/* The following initialization functions need to generate rtl, so
provide a dummy function context for them. */
init_dummy_function_start ();
- init_expmed ();
- if (flag_caller_saves)
- init_caller_save ();
+
+ /* Do the target-specific parts of expr initialization. */
+ init_expr_target ();
+
+ /* Although the actions of init_set_costs are language-independent,
+ it uses optabs, so we cannot call it from backend_init. */
+ init_set_costs ();
+
expand_dummy_function_end ();
}
init_asm_output (name);
- /* These create various _DECL nodes, so need to be called after the
+ /* This creates various _DECL nodes, so needs to be called after the
front end is initialized. */
init_eh ();
- init_optabs ();
- /* The following initialization functions need to generate rtl, so
- provide a dummy function context for them. */
- init_dummy_function_start ();
- init_expr_once ();
- expand_dummy_function_end ();
+ /* Do the target-specific parts of the initialization. */
+ lang_dependent_init_target ();
/* If dbx symbol table desired, initialize writing it and output the
predefined types. */
return 1;
}
+
+/* Reinitialize everything when target parameters, such as register usage,
+ have changed. */
+void
+target_reinit (void)
+{
+ /* Reinitialize RTL backend. */
+ backend_init_target ();
+
+ /* Reinitialize lang-dependent parts. */
+ lang_dependent_init_target ();
+}
+
+void
+dump_memory_report (bool final)
+{
+ ggc_print_statistics ();
+ stringpool_statistics ();
+ dump_tree_statistics ();
+ dump_rtx_statistics ();
+ dump_varray_statistics ();
+ dump_alloc_pool_statistics ();
+ dump_bitmap_statistics ();
+ dump_ggc_loc_statistics (final);
+}
+
/* Clean up: close opened files, etc. */
static void
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 ();
+ dump_memory_report (true);
/* Language-specific end of compilation actions. */
lang_hooks.finish ();
enough to default flags appropriately. */
decode_options (argc, argv);
- randomize ();
+ init_local_tick ();
/* Exit early if we can (e.g. -help). */
if (!exit_after_options)
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