/* 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 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ 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, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, 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;
const char *main_input_filename;
-#ifndef USE_MAPPED_LOCATION
-location_t unknown_location = { NULL, 0 };
-#endif
-
/* 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
+#define AUTODETECT_VALUE 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;
-
-/* Stack of currently pending input files. */
-
-struct file_stack *input_file_stack;
-
-/* Incremented on each change to input_file_stack. */
-int input_file_stack_tick;
+struct line_maps *line_table;
/* Name to use as base of names for dump output files. */
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;
+/* Prefix for profile data files */
+const char *profile_data_prefix;
/* 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
int flag_shlib;
+/* Generate code for GNU or NeXT Objective-C runtime environment. */
+
+#ifdef NEXT_OBJC_RUNTIME
+int flag_next_runtime = 1;
+#else
+int flag_next_runtime = 0;
+#endif
+
/* Set to the default thread-local storage (tls) model to use. */
enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
int flag_pedantic_errors = 0;
+/* Nonzero means make permerror produce warnings instead of errors. */
+
+int flag_permissive = 0;
+
/* -dA causes debug commentary information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read 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_FLAG_VAR_TRACKING it will be set according
+ flag_var_tracking == AUTODETECT_VALUE it will be set according
to optimize, debug_info_level and debug_hooks in process_options (). */
-int flag_var_tracking = AUTODETECT_FLAG_VAR_TRACKING;
+int flag_var_tracking = AUTODETECT_VALUE;
/* True if the user has tagged the function with the 'section'
attribute. */
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 }
};
-#ifdef TARGET_SWITCHES
-/* Here is a table, controlled by the tm.h file, listing each -m switch
- and which bits in `target_switches' it should set or clear.
- If VALUE is positive, it is bits to set.
- If VALUE is negative, -VALUE is bits to clear.
- (The sign bit is not used so there is no confusion.) */
-
-static const struct
-{
- const char *const name;
- const int value;
- const char *const description;
-}
-target_switches[] = TARGET_SWITCHES;
-#endif
-
-/* This table is similar, but allows the switch to have a value. */
-
-#ifdef TARGET_OPTIONS
-static const struct
-{
- const char *const prefix;
- const char **const variable;
- const char *const description;
- const char *const value;
-}
-target_options[] = TARGET_OPTIONS;
-#endif
-
/* Output files for assembler code (real compiler output)
and debugging dumps. */
if (!quiet_flag)
{
if (rtl_dump_and_exit)
- verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
+ fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
else
- verbatim (" %s", lang_hooks.decl_printable_name (decl, 2));
+ 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
return atoi (p);
}
+/* When compiling with a recent enough GCC, we use the GNU C "extern inline"
+ for floor_log2 and exact_log2; see toplev.h. That construct, however,
+ conflicts with the ISO C++ One Definition Rule. */
+
+#if GCC_VERSION < 3004 || !defined (__cplusplus)
+
/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
If X is 0, return -1. */
#endif
}
+#endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */
+
/* Handler for fatal signals, such as SIGSEGV. These are transformed
into ICE messages, which is much more user friendly. In case the
error printer crashes, reset the signal to prevent infinite recursion. */
if (input_name == NULL)
input_name = "<stdin>";
+ else
+ input_name = remap_debug_filename (input_name);
len = strlen (input_name);
na = input_name + len;
#endif
}
+/* A subroutine of wrapup_global_declarations. We've come to the end of
+ the compilation unit. All deferred variables should be undeferred,
+ and all incomplete decls should be finalized. */
+
+void
+wrapup_global_declaration_1 (tree decl)
+{
+ /* We're not deferring this any longer. Assignment is conditional to
+ avoid needlessly dirtying PCH pages. */
+ if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS)
+ && DECL_DEFER_OUTPUT (decl) != 0)
+ DECL_DEFER_OUTPUT (decl) = 0;
+
+ if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0)
+ lang_hooks.finish_incomplete_decl (decl);
+}
+
+/* A subroutine of wrapup_global_declarations. Decide whether or not DECL
+ needs to be output. Return true if it is output. */
+
+bool
+wrapup_global_declaration_2 (tree decl)
+{
+ if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
+ return false;
+
+ /* Don't write out static consts, unless we still need them.
+
+ We also keep static consts if not optimizing (for debugging),
+ unless the user specified -fno-keep-static-consts.
+ ??? They might be better written into the debug information.
+ This is possible when using DWARF.
+
+ A language processor that wants static constants to be always
+ written out (even if it is not used) is responsible for
+ calling rest_of_decl_compilation itself. E.g. the C front-end
+ calls rest_of_decl_compilation from finish_decl.
+ One motivation for this is that is conventional in some
+ environments to write things like:
+ static const char rcsid[] = "... version string ...";
+ intending to force the string to be in the executable.
+
+ A language processor that would prefer to have unneeded
+ static constants "optimized away" would just defer writing
+ them out until here. E.g. C++ does this, because static
+ constants are often defined in header files.
+
+ ??? A tempting alternative (for both C and C++) would be
+ to force a constant to be written if and only if it is
+ defined in a main file, as opposed to an include file. */
+
+ if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
+ {
+ struct varpool_node *node;
+ bool needed = true;
+ node = varpool_node (decl);
+
+ if (node->finalized)
+ needed = false;
+ else if (node->alias)
+ needed = false;
+ else if (!cgraph_global_info_ready
+ && (TREE_USED (decl)
+ || TREE_USED (DECL_ASSEMBLER_NAME (decl))))
+ /* needed */;
+ else if (node->needed)
+ /* needed */;
+ else if (DECL_COMDAT (decl))
+ needed = false;
+ else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl)
+ && (optimize || !flag_keep_static_consts
+ || DECL_ARTIFICIAL (decl)))
+ needed = false;
+
+ if (needed)
+ {
+ rest_of_decl_compilation (decl, 1, 1);
+ return true;
+ }
+ }
+
+ return false;
+}
+
/* Do any final processing required for the declarations in VEC, of
which there are LEN. We write out inline functions and variables
that have been deferred until this point, but which are required.
Returns nonzero if anything was put out. */
-int
+bool
wrapup_global_declarations (tree *vec, int len)
{
- tree decl;
+ bool reconsider, output_something = false;
int i;
- int reconsider;
- int output_something = 0;
for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- /* We're not deferring this any longer. Assignment is
- conditional to avoid needlessly dirtying PCH pages. */
- if (DECL_DEFER_OUTPUT (decl) != 0)
- DECL_DEFER_OUTPUT (decl) = 0;
-
- if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0)
- lang_hooks.finish_incomplete_decl (decl);
- }
+ wrapup_global_declaration_1 (vec[i]);
/* Now emit any global variables or functions that we have been
putting off. We need to loop in case one of the things emitted
here references another one which comes earlier in the list. */
do
{
- reconsider = 0;
+ reconsider = false;
for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
- continue;
-
- /* Don't write out static consts, unless we still need them.
-
- We also keep static consts if not optimizing (for debugging),
- unless the user specified -fno-keep-static-consts.
- ??? They might be better written into the debug information.
- This is possible when using DWARF.
-
- A language processor that wants static constants to be always
- written out (even if it is not used) is responsible for
- calling rest_of_decl_compilation itself. E.g. the C front-end
- calls rest_of_decl_compilation from finish_decl.
- One motivation for this is that is conventional in some
- environments to write things like:
- static const char rcsid[] = "... version string ...";
- intending to force the string to be in the executable.
-
- A language processor that would prefer to have unneeded
- static constants "optimized away" would just defer writing
- them out until here. E.g. C++ does this, because static
- constants are often defined in header files.
-
- ??? A tempting alternative (for both C and C++) would be
- to force a constant to be written if and only if it is
- defined in a main file, as opposed to an include file. */
-
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
- {
- struct cgraph_varpool_node *node;
- bool needed = 1;
- node = cgraph_varpool_node (decl);
-
- if (node->finalized)
- needed = 0;
- else if (node->alias)
- needed = 0;
- else if (!cgraph_global_info_ready
- && (TREE_USED (decl)
- || TREE_USED (DECL_ASSEMBLER_NAME (decl))))
- /* needed */;
- else if (node->needed)
- /* needed */;
- else if (DECL_COMDAT (decl))
- needed = 0;
- else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl)
- && (optimize || !flag_keep_static_consts
- || DECL_ARTIFICIAL (decl)))
- needed = 0;
-
- if (needed)
- {
- reconsider = 1;
- rest_of_decl_compilation (decl, 1, 1);
- }
- }
- }
-
+ reconsider |= wrapup_global_declaration_2 (vec[i]);
if (reconsider)
- output_something = 1;
+ output_something = true;
}
while (reconsider);
return output_something;
}
+/* A subroutine of check_global_declarations. Issue appropriate warnings
+ for the global declaration DECL. */
+
+void
+check_global_declaration_1 (tree decl)
+{
+ /* Warn about any function declared static but not defined. We don't
+ warn about variables, because many programs have static variables
+ that exist only to get some text into the object file. */
+ if (TREE_CODE (decl) == FUNCTION_DECL
+ && DECL_INITIAL (decl) == 0
+ && DECL_EXTERNAL (decl)
+ && ! DECL_ARTIFICIAL (decl)
+ && ! TREE_NO_WARNING (decl)
+ && ! TREE_PUBLIC (decl)
+ && (warn_unused_function
+ || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
+ {
+ if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
+ pedwarn ("%q+F used but never defined", decl);
+ else
+ 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);
+ }
+
+ /* Warn about static fns or vars defined but not used. */
+ if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL)
+ /* We don't warn about "static const" variables because the
+ "rcs_id" idiom uses that construction. */
+ || (warn_unused_variable
+ && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
+ && ! DECL_IN_SYSTEM_HEADER (decl)
+ && ! TREE_USED (decl)
+ /* The TREE_USED bit for file-scope decls is kept in the identifier,
+ to handle multiple external decls in different scopes. */
+ && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl)))
+ && ! DECL_EXTERNAL (decl)
+ && ! TREE_PUBLIC (decl)
+ /* A volatile variable might be used in some non-obvious way. */
+ && ! TREE_THIS_VOLATILE (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))
+ 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
- which there are LEN). Output debugging information for them. */
+ which there are LEN). */
void
check_global_declarations (tree *vec, int len)
{
- tree decl;
int i;
for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- /* Do not emit debug information about variables that are in
- static storage, but not defined. */
- if (TREE_CODE (decl) == VAR_DECL
- && TREE_STATIC (decl)
- && !TREE_ASM_WRITTEN (decl))
- DECL_IGNORED_P (decl) = 1;
-
- /* Warn about any function
- declared static but not defined.
- We don't warn about variables,
- because many programs have static variables
- that exist only to get some text into the object file. */
- if (TREE_CODE (decl) == FUNCTION_DECL
- && DECL_INITIAL (decl) == 0
- && DECL_EXTERNAL (decl)
- && ! DECL_ARTIFICIAL (decl)
- && ! TREE_NO_WARNING (decl)
- && ! TREE_PUBLIC (decl)
- && (warn_unused_function
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
- {
- if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- pedwarn ("%J%qF used but never defined", decl, decl);
- else
- warning (0, "%J%qF declared %<static%> but never defined",
- decl, decl);
- /* This symbol is effectively an "extern" declaration now. */
- TREE_PUBLIC (decl) = 1;
- assemble_external (decl);
- }
+ check_global_declaration_1 (vec[i]);
+}
- /* Warn about static fns or vars defined but not used. */
- if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL)
- /* We don't warn about "static const" variables because the
- "rcs_id" idiom uses that construction. */
- || (warn_unused_variable
- && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
- && ! DECL_IN_SYSTEM_HEADER (decl)
- && ! TREE_USED (decl)
- /* The TREE_USED bit for file-scope decls is kept in the identifier,
- to handle multiple external decls in different scopes. */
- && ! TREE_USED (DECL_NAME (decl))
- && ! DECL_EXTERNAL (decl)
- && ! TREE_PUBLIC (decl)
- /* A volatile variable might be used in some non-obvious way. */
- && ! TREE_THIS_VOLATILE (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))
- warning (0, "%J%qD defined but not used", decl, decl);
-
- /* Avoid confusing the debug information machinery when there are
- errors. */
- if (errorcount == 0 && sorrycount == 0)
- {
- timevar_push (TV_SYMOUT);
- (*debug_hooks->global_decl) (decl);
- timevar_pop (TV_SYMOUT);
- }
- }
+/* Emit debugging information for all global declarations in VEC. */
+
+void
+emit_debug_global_declarations (tree *vec, int len)
+{
+ int i;
+
+ /* Avoid confusing the debug information machinery when there are errors. */
+ if (errorcount != 0 || sorrycount != 0)
+ return;
+
+ timevar_push (TV_SYMOUT);
+ for (i = 0; i < len; i++)
+ debug_hooks->global_decl (vec[i]);
+ timevar_pop (TV_SYMOUT);
}
/* Warn about a use of an identifier which was marked deprecated. */
if (DECL_P (node))
{
expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node));
- warning (0, "%qs is deprecated (declared at %s:%d)",
- IDENTIFIER_POINTER (DECL_NAME (node)),
- xloc.file, xloc.line);
+ warning (OPT_Wdeprecated_declarations,
+ "%qD is deprecated (declared at %s:%d)",
+ node, xloc.file, xloc.line);
}
else if (TYPE_P (node))
{
expanded_location xloc
= expand_location (DECL_SOURCE_LOCATION (decl));
if (what)
- warning (0, "%qs is deprecated (declared at %s:%d)", what,
- xloc.file, xloc.line);
+ warning (OPT_Wdeprecated_declarations,
+ "%qs is deprecated (declared at %s:%d)", what,
+ xloc.file, xloc.line);
else
- warning (0, "type is deprecated (declared at %s:%d)",
+ warning (OPT_Wdeprecated_declarations,
+ "type is deprecated (declared at %s:%d)",
xloc.file, xloc.line);
}
else
{
if (what)
- warning (0, "%qs is deprecated", what);
+ warning (OPT_Wdeprecated_declarations, "%qs is deprecated", what);
else
- warning (0, "type is deprecated");
+ warning (OPT_Wdeprecated_declarations, "type is deprecated");
}
}
}
-/* Save the current INPUT_LOCATION on the top entry in the
- INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the
- INPUT_LOCATION accordingly. */
-
-void
-#ifdef USE_MAPPED_LOCATION
-push_srcloc (location_t fline)
-#else
-push_srcloc (const char *file, int line)
-#endif
-{
- struct file_stack *fs;
-
- fs = xmalloc (sizeof (struct file_stack));
- fs->location = input_location;
- fs->next = input_file_stack;
-#ifdef USE_MAPPED_LOCATION
- input_location = fline;
-#else
- input_filename = file;
- input_line = line;
-#endif
- input_file_stack = fs;
- input_file_stack_tick++;
-}
-
-/* Pop the top entry off the stack of presently open source files.
- Restore the INPUT_LOCATION from the new topmost entry on the
- stack. */
-
-void
-pop_srcloc (void)
-{
- struct file_stack *fs;
-
- fs = input_file_stack;
- input_location = fs->location;
- input_file_stack = fs->next;
- free (fs);
- input_file_stack_tick++;
-}
-
/* Compile an entire translation unit. Write a file of assembly
output and various debugging dumps. */
{
/* Initialize yet another pass. */
+ ggc_protect_identifiers = true;
+
init_cgraph ();
init_final (main_input_filename);
coverage_init (aux_base_name);
+ statistics_init ();
timevar_push (TV_PARSE);
rest_of_compilation for each function). */
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 ();
-
/* Compilation is now finished except for writing
what's left of the symbol table output. */
timevar_pop (TV_PARSE);
if (flag_syntax_only)
return;
+ ggc_protect_identifiers = false;
+
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 ();
- /* Write out any pending weak symbol declarations. */
+ /* 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. */
timevar_push (TV_SYMOUT);
-#ifdef DWARF2_UNWIND_INFO
+#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
if (dwarf2out_do_frame ())
dwarf2out_frame_finish ();
#endif
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
targetm.asm_out.file_end ();
}
-/* Display help for target options. */
-void
-display_target_options (void)
-{
- int undoc;
-#if defined (TARGET_SWITCHES) || defined (TARGET_OPTIONS)
- int i;
-#endif
- unsigned int cli;
- static bool displayed = false;
-
- /* Avoid double printing for --help --target-help. */
- if (displayed)
- return;
-
- displayed = true;
-
- for (cli = 0; cli < cl_options_count; cli++)
- if ((cl_options[cli].flags & (CL_TARGET | CL_UNDOCUMENTED)) == CL_TARGET)
- break;
-
- if (cli < cl_options_count
-#ifdef TARGET_SWITCHES
- || ARRAY_SIZE (target_switches) > 1
-#endif
-#ifdef TARGET_OPTIONS
- || ARRAY_SIZE (target_options) > 1
-#endif
- )
- {
- int doc = cli < cl_options_count;
-
- undoc = 0;
-
- printf (_("\nTarget specific options:\n"));
-
-#ifdef TARGET_SWITCHES
- 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));
- }
-#endif
-
-#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
- print_filtered_help (CL_TARGET);
- 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
break;
case 'D': /* These are handled by the preprocessor. */
case 'I':
+ case 'M':
+ case 'N':
+ case 'U':
break;
case 'H':
setup_core_dumping();
break;
-
case 'a':
+ enable_rtl_dump_file ();
+ break;
+
default:
- if (!enable_rtl_dump_file (c))
warning (0, "unrecognized gcc debugging option: %c", c);
break;
}
"none", "stabs", "coff", "dwarf-2", "xcoff", "vms"
};
-/* Decode -m switches. */
-/* Decode the switch -mNAME. */
-
-void
-set_target_switch (const char *name)
-{
-#if defined (TARGET_SWITCHES) || defined (TARGET_OPTIONS)
- size_t j;
-#endif
- int valid_target_option = 0;
-
-#ifdef TARGET_SWITCHES
- for (j = 0; j < ARRAY_SIZE (target_switches); j++)
- if (!strcmp (target_switches[j].name, name))
- {
- if (target_switches[j].value < 0)
- target_flags &= ~-target_switches[j].value;
- else
- target_flags |= target_switches[j].value;
- if (name[0] != 0)
- {
- if (target_switches[j].value < 0)
- target_flags_explicit |= -target_switches[j].value;
- else
- target_flags_explicit |= target_switches[j].value;
- }
- valid_target_option = 1;
- }
-#endif
-
-#ifdef TARGET_OPTIONS
- if (!valid_target_option)
- for (j = 0; j < ARRAY_SIZE (target_options); j++)
- {
- int len = strlen (target_options[j].prefix);
- if (target_options[j].value)
- {
- if (!strcmp (target_options[j].prefix, name))
- {
- *target_options[j].variable = target_options[j].value;
- valid_target_option = 1;
- }
- }
- else
- {
- if (!strncmp (target_options[j].prefix, name, len))
- {
- *target_options[j].variable = name + len;
- valid_target_option = 1;
- }
- }
- }
-#endif
-
- if (name[0] != 0 && !valid_target_option)
- error ("invalid option %qs", name);
-}
-
/* Print version information to FILE.
Each line begins with INDENT (for the case where FILE is the
assembler output file). */
void
print_version (FILE *file, const char *indent)
{
+ static const char fmt1[] =
+#ifdef __GNUC__
+ N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ")
+#else
+ 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_("%s%swarning: %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__ "[?]"
#endif
- fnotice (file,
-#ifdef __GNUC__
- "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n"
+ fprintf (file,
+ file == stderr ? _(fmt1) : fmt1,
+ indent, *indent != 0 ? " " : "",
+ 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
- "%s%s%s version %s (%s) compiled by CC.\n"
+#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
- , indent, *indent != 0 ? " " : "",
- lang_hooks.name, version_string, TARGET_NAME,
- indent, __VERSION__);
- fnotice (file, "%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n",
+ 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,
+ indent, *indent != 0 ? " " : "",
+ "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version);
+ if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ()))
+ fprintf (file,
+ file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
+ "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);
-
- /* Print target specific options. */
+ pos = print_single_switch (print_fn, pos,
+ SWITCH_TYPE_ENABLED, cl_options[j].opt_text);
-#ifdef TARGET_SWITCHES
- for (j = 0; j < ARRAY_SIZE (target_switches); j++)
- if (target_switches[j].name[0] != '\0'
- && target_switches[j].value > 0
- && ((target_switches[j].value & target_flags)
- == target_switches[j].value))
- {
- pos = print_single_switch (file, pos, max, indent, sep, term,
- "-m", target_switches[j].name);
- }
-#endif
-
-#ifdef TARGET_OPTIONS
- for (j = 0; j < ARRAY_SIZE (target_options); j++)
- if (*target_options[j].variable != NULL)
- {
- char prefix[256];
- sprintf (prefix, "-m%s", target_options[j].prefix);
- pos = print_single_switch (file, pos, max, indent, sep, term,
- prefix, *target_options[j].variable);
- }
-#endif
-
- fprintf (file, "%s", term);
+ print_fn (SWITCH_TYPE_LINE_END, NULL);
}
/* Open assembly code output file. Do this even if -fsyntax-only is
if (asm_file_name == 0)
{
int len = strlen (dump_base_name);
- char *dumpname = xmalloc (len + 6);
+ 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
size_t i;
char *result, *r;
- *len = sizeof (target_flags) + 2;
-#ifdef TARGET_OPTIONS
- for (i = 0; i < ARRAY_SIZE (target_options); i++)
- {
- *len += 1;
- if (*target_options[i].variable)
- *len += strlen (*target_options[i].variable);
- }
-#endif
+ *len = 2;
+ if (targetm.check_pch_target_flags)
+ *len += sizeof (target_flags);
for (i = 0; i < cl_options_count; i++)
if (option_affects_pch_p (i, &state))
*len += state.size;
- result = r = xmalloc (*len);
+ result = r = XNEWVEC (char, *len);
r[0] = flag_pic;
r[1] = flag_pie;
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++)
+ if (targetm.check_pch_target_flags)
{
- const char *str = *target_options[i].variable;
- size_t l;
- if (! str)
- str = "";
- l = strlen (str) + 1;
- memcpy (r, str, l);
- r += l;
+ memcpy (r, &target_flags, sizeof (target_flags));
+ r += sizeof (target_flags);
}
-#endif
+
for (i = 0; i < cl_options_count; i++)
if (option_affects_pch_p (i, &state))
{
return result;
}
+/* Return a message which says that a PCH file was created with a different
+ setting of OPTION. */
+
+static const char *
+pch_option_mismatch (const char *option)
+{
+ char *r;
+
+ asprintf (&r, _("created and used with differing settings of '%s'"), option);
+ if (r == NULL)
+ return _("out of memory");
+ return r;
+}
+
/* Default version of pch_valid_p. */
const char *
{
struct cl_option_state state;
const char *data = (const char *)data_p;
- const char *flag_that_differs = NULL;
size_t i;
- int tf;
/* -fpic and -fpie also usually make a PCH invalid. */
if (data[0] != flag_pic)
data += 2;
/* Check target_flags. */
- memcpy (&tf, data, sizeof (target_flags));
if (targetm.check_pch_target_flags)
{
- const char *r = targetm.check_pch_target_flags (tf);
+ int tf;
+ const char *r;
+
+ memcpy (&tf, data, sizeof (target_flags));
+ data += sizeof (target_flags);
+ len -= sizeof (target_flags);
+ r = targetm.check_pch_target_flags (tf);
if (r != NULL)
return r;
}
-#ifdef TARGET_SWITCHES
- else if (tf != target_flags)
- {
- for (i = 0; i < ARRAY_SIZE (target_switches); i++)
- {
- int bits;
-
- bits = target_switches[i].value;
- if (bits < 0)
- bits = -bits;
- if ((target_flags & bits) != (tf & bits))
- {
- flag_that_differs = target_switches[i].name;
- goto make_message;
- }
- }
- gcc_unreachable ();
- }
-#endif
- data += sizeof (target_flags);
- len -= sizeof (target_flags);
-
- /* Check string options. */
-#ifdef TARGET_OPTIONS
- for (i = 0; i < ARRAY_SIZE (target_options); i++)
- {
- const char *str = *target_options[i].variable;
- size_t l;
- if (! str)
- str = "";
- l = strlen (str) + 1;
- if (len < l || memcmp (data, str, l) != 0)
- {
- flag_that_differs = target_options[i].prefix;
- goto make_message;
- }
- data += l;
- len -= l;
- }
-#endif
for (i = 0; i < cl_options_count; i++)
if (option_affects_pch_p (i, &state))
{
if (memcmp (data, state.data, state.size) != 0)
- {
- flag_that_differs = cl_options[i].opt_text + 2;
- goto make_message;
- }
+ return pch_option_mismatch (cl_options[i].opt_text);
data += state.size;
len -= state.size;
}
return NULL;
-
- make_message:
- {
- char *r;
- asprintf (&r, _("created and used with differing settings of '-m%s'"),
- flag_that_differs);
- if (r == NULL)
- return _("out of memory");
- return r;
- }
}
/* Default tree printer. Handles declarations only. */
static bool
-default_tree_printer (pretty_printer * pp, text_info *text)
+default_tree_printer (pretty_printer * pp, text_info *text, const char *spec,
+ int precision, bool wide, bool set_locus, bool hash)
{
tree t;
- switch (*text->format_spec)
+ /* FUTURE: %+x should set the locus. */
+ if (precision != 0 || wide || hash)
+ return false;
+
+ switch (*spec)
{
case 'D':
t = va_arg (*text->args_ptr, tree);
return false;
}
+ if (set_locus && text->locus)
+ *text->locus = DECL_SOURCE_LOCATION (t);
+
if (DECL_P (t))
{
const char *n = DECL_NAME (t)
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. */
/* This must be done after add_params but before argument processing. */
init_ggc_heuristics();
- init_tree_optimization_passes ();
+ init_optimization_passes ();
+ statistics_early_init ();
+}
+
+/* Return true if the current target supports -fsection-anchors. */
+
+static bool
+target_supports_section_anchors_p (void)
+{
+ if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0)
+ return false;
+
+ if (targetm.asm_out.output_anchor == NULL)
+ return false;
+
+ 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)
{
+ /* Just in case lang_hooks.post_options ends up calling a debug_hook.
+ This can happen with incorrect pre-processed input. */
+ debug_hooks = &do_nothing_debug_hooks;
+
/* Allow the front end to perform consistency checks and do further
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);
-#ifndef USE_MAPPED_LOCATION
- input_filename = main_input_filename;
-#endif
#ifdef OVERRIDE_OPTIONS
/* Some machines may reject certain combinations of options. */
OVERRIDE_OPTIONS;
#endif
+ if (flag_section_anchors && !target_supports_section_anchors_p ())
+ {
+ warning (OPT_fsection_anchors,
+ "this target does not support %qs", "-fsection-anchors");
+ flag_section_anchors = 0;
+ }
+
if (flag_short_enums == 2)
flag_short_enums = targetm.default_short_enums ();
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)
flag_unroll_loops = 1;
- /* The loop unrolling code assumes that cse will be run after loop. */
- if (flag_unroll_loops || flag_peel_loops)
- flag_rerun_cse_after_loop = 1;
-
- /* If explicitly asked to run new loop optimizer, switch off the old
- one. */
- if (flag_loop_optimize2)
- flag_loop_optimize = 0;
+ /* The loop unrolling code assumes that cse will be run after loop.
+ web and rename-registers also help when run after loop unrolling. */
- /* Enable new loop optimizer pass if any of its optimizations is called. */
- if (flag_move_loop_invariants
- || flag_unswitch_loops
- || flag_peel_loops
- || flag_unroll_loops
- || flag_branch_on_count_reg)
- flag_loop_optimize2 = 1;
+ if (flag_rerun_cse_after_loop == AUTODETECT_VALUE)
+ flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops;
+ if (flag_web == AUTODETECT_VALUE)
+ flag_web = flag_unroll_loops || flag_peel_loops;
+ if (flag_rename_registers == AUTODETECT_VALUE)
+ flag_rename_registers = flag_unroll_loops || flag_peel_loops;
if (flag_non_call_exceptions)
flag_asynchronous_unwind_tables = 1;
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;
if (flag_value_profile_transformations)
flag_profile_values = 1;
- /* Speculative prefetching implies the value profiling. We also switch off
- the prefetching in the loop optimizer, so that we do not emit double
- prefetches. TODO -- we should teach these two to cooperate; the loop
- based prefetching may sometimes do a better job, especially in connection
- with reuse analysis. */
- if (flag_speculative_prefetching)
- {
- flag_profile_values = 1;
- flag_prefetch_loop_arrays = 0;
- }
-
/* Warn about options that are not supported on this machine. */
#ifndef INSN_SCHEDULING
if (flag_schedule_insns || flag_schedule_insns_after_reload)
{
print_version (stderr, "");
if (! quiet_flag)
- print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
+ print_switch_values (print_to_stderr);
}
if (flag_syntax_only)
default_debug_hooks = &vmsdbg_debug_hooks;
#endif
- debug_hooks = &do_nothing_debug_hooks;
if (write_symbols == NO_DEBUG)
;
#if defined(DBX_DEBUGGING_INFO)
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_FLAG_VAR_TRACKING)
+ if (flag_rename_registers == AUTODETECT_VALUE)
flag_rename_registers = default_debug_hooks->var_location
!= do_nothing_debug_hooks.var_location;
- if (flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING)
+ 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. */
warning (0, "-fprefetch-loop-arrays not supported for this target");
flag_prefetch_loop_arrays = 0;
}
- if (flag_speculative_prefetching)
- {
- if (flag_speculative_prefetching_set)
- warning (0, "-fspeculative-prefetching not supported for this target");
- flag_speculative_prefetching = 0;
- }
#else
if (flag_prefetch_loop_arrays && !HAVE_prefetch)
{
warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)");
flag_prefetch_loop_arrays = 0;
}
- if (flag_speculative_prefetching && !HAVE_prefetch)
- {
- if (flag_speculative_prefetching_set)
- warning (0, "-fspeculative-prefetching not supported for this target (try -march switches)");
- flag_speculative_prefetching = 0;
- }
#endif
/* This combination of options isn't handled for i386 targets and doesn't
flag_prefetch_loop_arrays = 0;
}
-#ifndef OBJECT_FORMAT_ELF
- if (flag_function_sections && write_symbols != NO_DEBUG)
- warning (0, "-ffunction-sections may affect debugging on some targets");
-#endif
-
/* The presence of IEEE signaling NaNs, implies all math can trap. */
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;
+
+ /* With -fcx-fortran-rules, we do something in-between cheap and C99. */
+ if (flag_cx_fortran_rules)
+ flag_complex_method = 1;
+
+ /* Targets must be able to place spill slots at lower addresses. If the
+ target already uses a soft frame pointer, the transition is trivial. */
+ if (!FRAME_GROWS_DOWNWARD && flag_stack_protect)
+ {
+ warning (0, "-fstack-protector not supported for this target");
+ flag_stack_protect = 0;
+ }
+ if (!flag_stack_protect)
+ warn_stack_protect = 0;
+
+ /* ??? Unwind info is not correct around the CFG unless either a frame
+ pointer is present or A_O_A is set. Fixing this requires rewriting
+ unwind info generation to be aware of the CFG and propagating states
+ around edges. */
+ if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS
+ && flag_omit_frame_pointer)
+ {
+ warning (0, "unwind tables currently require a frame pointer "
+ "for correctness");
+ flag_omit_frame_pointer = 0;
+ }
+}
+
+/* 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. */
+/* 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_loop ();
- init_reload ();
- init_function_once ();
+ 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 ();
}
dump_base_name = name && name[0] ? name : "gccdump";
/* Other front-end initialization. */
-#ifdef USE_MAPPED_LOCATION
input_location = BUILTINS_LOCATION;
-#else
- input_filename = "<built-in>";
- input_line = 0;
-#endif
if (lang_hooks.init () == 0)
return 0;
input_location = save_loc;
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. */
timevar_push (TV_SYMOUT);
-#ifdef DWARF2_UNWIND_INFO
+#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
if (dwarf2out_do_frame ())
dwarf2out_frame_init ();
#endif
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
fatal_error ("error closing %s: %m", asm_file_name);
}
+ statistics_fini ();
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)
do_compile ();
+ if (warningcount || errorcount)
+ print_ignored_options ();
+
if (errorcount || sorrycount)
return (FATAL_EXIT_CODE);
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