diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/toplev.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/toplev.c | 2227 |
1 files changed, 0 insertions, 2227 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/toplev.c b/gcc-4.2.1-5666.3/gcc/toplev.c deleted file mode 100644 index 7564d02a8..000000000 --- a/gcc-4.2.1-5666.3/gcc/toplev.c +++ /dev/null @@ -1,2227 +0,0 @@ -/* 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 - 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 -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -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. */ - -/* This is the top level of cc1/c++. - It parses command args, opens files, invokes the various passes - in the proper order, and counts the time used by each. - Error messages and low-level interface to malloc also handled here. */ - -#include "config.h" -#undef FLOAT /* This is for hpux. They should change hpux. */ -#undef FFS /* Some systems define this in param.h. */ -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include <signal.h> - -#ifdef HAVE_SYS_RESOURCE_H -# include <sys/resource.h> -#endif - -#ifdef HAVE_SYS_TIMES_H -# include <sys/times.h> -#endif - -#include "line-map.h" -#include "input.h" -#include "tree.h" -#include "version.h" -#include "rtl.h" -#include "tm_p.h" -#include "flags.h" -#include "insn-attr.h" -#include "insn-config.h" -#include "insn-flags.h" -#include "hard-reg-set.h" -#include "recog.h" -#include "output.h" -#include "except.h" -#include "function.h" -#include "toplev.h" -#include "expr.h" -#include "basic-block.h" -#include "intl.h" -#include "ggc.h" -#include "graph.h" -#include "regs.h" -#include "timevar.h" -#include "diagnostic.h" -#include "params.h" -#include "reload.h" -#include "dwarf2asm.h" -#include "integrate.h" -#include "real.h" -#include "debug.h" -#include "target.h" -#include "langhooks.h" -#include "cfglayout.h" -#include "cfgloop.h" -#include "hosthooks.h" -#include "cgraph.h" -#include "opts.h" -#include "coverage.h" -#include "value-prof.h" -#include "alloc-pool.h" -#include "tree-mudflap.h" - -#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) -#include "dwarf2out.h" -#endif - -#if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) -#include "dbxout.h" -#endif - -#ifdef SDB_DEBUGGING_INFO -#include "sdbout.h" -#endif - -#ifdef XCOFF_DEBUGGING_INFO -#include "xcoffout.h" /* Needed for external data - declarations for e.g. AIX 4.x. */ -#endif - -static void general_init (const char *); -static void do_compile (void); -static void process_options (void); -static void backend_init (void); -static int lang_dependent_init (const char *); -static void init_asm_output (const char *); -static void finalize (void); - -static void crash_signal (int) ATTRIBUTE_NORETURN; -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; - -/* True if we don't need a backend (e.g. preprocessing only). */ -static bool no_backend; - -/* Length of line when printing switch values. */ -#define MAX_LINE 75 - -/* Name of program invoked, sans directories. */ - -const char *progname; - -/* Copy of argument vector to toplev_main. */ -static const char **save_argv; - -/* Name of top-level original source file (what was input to cpp). - This comes from the #-command at the beginning of the actual input. - If there isn't any there, then this is the cc1 input file name. */ - -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_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; - -/* 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; - -/* Name to use as a base for auxiliary 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; - -/* A mask of target_flags that includes bit X if X was set or cleared - on the command line. */ - -int target_flags_explicit; - -/* Debug hooks - dependent upon command line options. */ - -const struct gcc_debug_hooks *debug_hooks; - -/* Debug hooks - target default. */ - -static const struct gcc_debug_hooks *default_debug_hooks; - -/* Other flags saying which kinds of debugging dump have been requested. */ - -int rtl_dump_and_exit; -int flag_print_asm_name; -enum graph_dump_types graph_dump_format; - -/* Name for output file of assembly code, specified with -o. */ - -const char *asm_file_name; -/* APPLE LOCAL ss2 */ -char *asm_file_name2; - -/* APPLE LOCAL begin optimization pragmas 3124235/3420242 */ -/* APPLE LOCAL end optimization pragmas 3124235/3420242 */ - -/* The FUNCTION_DECL for the function currently being compiled, - or 0 if between functions. */ -tree current_function_decl; - -/* Set to the FUNC_BEGIN label of the current function, or NULL - if none. */ -const char * current_function_func_begin_label; - -/* Temporarily suppress certain warnings. - This is set while reading code from a system header file. */ - -int in_system_header = 0; - -/* Nonzero means to collect statistics which might be expensive - and to print them when we are done. */ -int flag_detailed_statistics = 0; - -/* A random sequence of characters, unless overridden by user. */ -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 - user has specified a particular random seed. */ -unsigned local_tick; - -/* -f flags. */ - -/* Nonzero means `char' should be signed. */ - -int flag_signed_char; - -/* Nonzero means give an enum type only as many bytes as it needs. A value - of 2 means it has not yet been initialized. */ - -int flag_short_enums; - -/* APPLE LOCAL begin -fast or -fastf or -fastcp */ -/* Nonzero if we should perform SPEC oriented optimizations. */ -int flag_fast = 0; -int flag_fastf = 0; -int flag_fastcp = 0; -/* APPLE LOCAL end -fast or -fastf or -fastcp */ - -/* Nonzero if structures and unions should be returned in memory. - - This should only be defined if compatibility with another compiler or - with an ABI is needed, because it results in slower code. */ - -#ifndef DEFAULT_PCC_STRUCT_RETURN -#define DEFAULT_PCC_STRUCT_RETURN 1 -#endif - -/* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ - -int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; - -/* APPLE LOCAL begin fwritable strings */ -/* Nonzero for -fwritable-strings: - store string constants in data segment and don't uniquize them. */ - -int flag_writable_strings = 0; -/* APPLE LOCAL end fwritable strings */ - -/* APPLE LOCAL Altivec */ -int flag_disable_opts_for_faltivec = 0; - -/* 0 means straightforward implementation of complex divide acceptable. - 1 means wide ranges of inputs must work for complex divide. - 2 means C99-like requirements for complex multiply and divide. */ - -int flag_complex_method = 1; - -/* APPLE LOCAL begin -fobey-inline */ -/* Nonzero for -fobey-inline: 'inline' keyword must be obeyed, regardless - of codesize. */ - -int flag_obey_inline; -/* APPLE LOCAL end -fobey-inline */ - -/* Nonzero means that we don't want inlining by virtue of -fno-inline, - not just because the tree inliner turned us off. */ - -int flag_really_no_inline = 2; - -/* Nonzero means we should be saving declaration info into a .X file. */ - -int flag_gen_aux_info = 0; - -/* Specified name of aux-info file. */ - -const char *aux_info_file_name; - -/* Nonzero if we are compiling code for a shared library, zero for - executable. */ - -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; - -/* Nonzero means change certain warnings into errors. - Usually these are warnings about failure to conform to some standard. */ - -int flag_pedantic_errors = 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 - generated assembly code (perhaps while debugging the compiler itself). - Currently, this switch is only used by dwarfout.c; however, it is intended - to be a catchall for printing debug information in the assembler file. */ - -int flag_debug_asm = 0; - -/* -dP causes the rtl to be emitted as a comment in assembly. */ - -int flag_dump_rtl_in_asm = 0; - -/* When non-NULL, indicates that whenever space is allocated on the - stack, the resulting stack pointer must not pass this - address---that is, for stacks that grow downward, the stack pointer - must always be greater than or equal to this address; for stacks - that grow upward, the stack pointer must be less than this address. - At present, the rtx may be either a REG or a SYMBOL_REF, although - 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; - -/* APPLE LOCAL begin predictive compilation */ -int predictive_compilation = -1; -/* APPLE LOCAL end predictive compilation */ - -/* 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 flag_var_tracking = AUTODETECT_VALUE; - -/* True if the user has tagged the function with the 'section' - attribute. */ - -bool user_defined_section_attribute = false; - -/* 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 - of two not less than the variable, for .align output. */ - -int align_loops_log; -/* APPLE LOCAL -falign-loops-max-skip */ -/* Delete int align_loops_max_skip; */ -int align_jumps_log; -/* APPLE LOCAL -falign-jumps-max-skip */ -/* Delete int align_jumps_max_skip; */ -int align_labels_log; -int align_labels_max_skip; -int align_functions_log; - -/* APPLE LOCAL begin mainline aligned functions 5933878 */ -/* Removed force_align_functions_log. */ -/* APPLE LOCAL end mainline aligned functions 5933878 */ - -typedef struct -{ - const char *const string; - int *const variable; - const int on_value; -} -lang_independent_options; - -/* Nonzero if subexpressions must be evaluated from left-to-right. */ -int flag_evaluation_order = 0; - -/* The user symbol prefix after having resolved same. */ -const char *user_label_prefix; - -static const param_info lang_independent_params[] = { -#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ - { OPTION, DEFAULT, MIN, MAX, HELP }, -#include "params.def" -#undef DEFPARAM - { NULL, 0, 0, 0, NULL } -}; - -/* Output files for assembler code (real compiler output) - and debugging dumps. */ - -FILE *asm_out_file; -FILE *aux_info_file; -FILE *dump_file = NULL; -const char *dump_file_name; - -/* APPLE LOCAL begin ss2 */ -int flag_pch_file; -int flag_save_repository; -/* APPLE LOCAL end ss2 */ - -/* The current working directory of a translation. It's generally the - directory from which compilation was initiated, but a preprocessed - file may specify the original directory in which it was - created. */ - -static const char *src_pwd; - -/* Initialize src_pwd with the given string, and return true. If it - was already initialized, return false. As a special case, it may - be called with a NULL argument to test whether src_pwd has NOT been - initialized yet. */ - -bool -set_src_pwd (const char *pwd) -{ - if (src_pwd) - { - if (strcmp (src_pwd, pwd) == 0) - return true; - else - return false; - } - - src_pwd = xstrdup (pwd); - return true; -} - -/* Return the directory from which the translation unit was initiated, - in case set_src_pwd() was not called before to assign it a - different value. */ - -const char * -get_src_pwd (void) -{ - if (! src_pwd) - { - src_pwd = getpwd (); - if (!src_pwd) - src_pwd = "."; - } - - return src_pwd; -} - -/* Called when the start of a function definition is parsed, - this function prints on stderr the name of the function. */ -void -announce_function (tree decl) -{ - if (!quiet_flag) - { - if (rtl_dump_and_exit) - fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); - else - 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); - } -} - -/* Set up a default flag_random_seed and local_tick, unless the user - already specified one. */ - -static void -randomize (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; - - gettimeofday (&tv, NULL); - local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; - } -#else - { - time_t now = time (NULL); - - if (now != (time_t)-1) - 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) - local_tick = -1; -} - - -/* Decode the string P as an integral parameter. - If the string is indeed an integer return its numeric value else - issue an Invalid Option error for the option PNAME and return DEFVAL. - If PNAME is zero just return DEFVAL, do not call error. */ - -int -read_integral_parameter (const char *p, const char *pname, const int defval) -{ - const char *endp = p; - - while (*endp) - { - if (ISDIGIT (*endp)) - endp++; - else - break; - } - - if (*endp != 0) - { - if (pname != 0) - error ("invalid option argument %qs", pname); - return defval; - } - - 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. */ - -int -floor_log2 (unsigned HOST_WIDE_INT x) -{ - int t = 0; - - if (x == 0) - return -1; - -#ifdef CLZ_HWI - t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x); -#else - if (HOST_BITS_PER_WIDE_INT > 64) - if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) - t += 64; - if (HOST_BITS_PER_WIDE_INT > 32) - if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) - t += 32; - if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) - t += 16; - if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) - t += 8; - if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) - t += 4; - if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) - t += 2; - if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) - t += 1; -#endif - - return t; -} - -/* Return the logarithm of X, base 2, considering X unsigned, - if X is a power of 2. Otherwise, returns -1. */ - -int -exact_log2 (unsigned HOST_WIDE_INT x) -{ - if (x != (x & -x)) - return -1; -#ifdef CTZ_HWI - return x ? CTZ_HWI (x) : -1; -#else - return floor_log2 (x); -#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. */ - -static void -crash_signal (int signo) -{ - signal (signo, SIG_DFL); - - /* If we crashed while processing an ASM statement, then be a little more - graceful. It's most likely the user's fault. */ - if (this_is_asm_operands) - { - output_operand_lossage ("unrecoverable error"); - exit (FATAL_EXIT_CODE); - } - - internal_error ("%s", strsignal (signo)); -} - -/* Arrange to dump core on error. (The regular error message is still - printed first, except in the case of abort().) */ - -static void -setup_core_dumping (void) -{ -#ifdef SIGABRT - signal (SIGABRT, SIG_DFL); -#endif -#if defined(HAVE_SETRLIMIT) - { - struct rlimit rlim; - if (getrlimit (RLIMIT_CORE, &rlim) != 0) - fatal_error ("getting core file size maximum limit: %m"); - rlim.rlim_cur = rlim.rlim_max; - if (setrlimit (RLIMIT_CORE, &rlim) != 0) - fatal_error ("setting core file size limit to maximum: %m"); - } -#endif - diagnostic_abort_on_error (global_dc); -} - - -/* Strip off a legitimate source ending from the input string NAME of - length LEN. Rather than having to know the names used by all of - our front ends, we strip off an ending of a period followed by - up to five characters. (Java uses ".class".) */ - -void -strip_off_ending (char *name, int len) -{ - int i; - for (i = 2; i < 6 && len > i; i++) - { - if (name[len - i] == '.') - { - name[len - i] = '\0'; - break; - } - } -} - -/* Output a quoted string. */ - -void -output_quoted_string (FILE *asm_file, const char *string) -{ -#ifdef OUTPUT_QUOTED_STRING - OUTPUT_QUOTED_STRING (asm_file, string); -#else - char c; - - putc ('\"', asm_file); - while ((c = *string++) != 0) - { - if (ISPRINT (c)) - { - if (c == '\"' || c == '\\') - putc ('\\', asm_file); - putc (c, asm_file); - } - else - fprintf (asm_file, "\\%03o", (unsigned char) c); - } - putc ('\"', asm_file); -#endif -} - -/* Output a file name in the form wanted by System V. */ - -void -output_file_directive (FILE *asm_file, const char *input_name) -{ - int len; - const char *na; - - if (input_name == NULL) - input_name = "<stdin>"; - - len = strlen (input_name); - na = input_name + len; - - /* NA gets INPUT_NAME sans directory names. */ - while (na > input_name) - { - if (IS_DIR_SEPARATOR (na[-1])) - break; - na--; - } - -#ifdef ASM_OUTPUT_SOURCE_FILENAME - ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); -#else - fprintf (asm_file, "\t.file\t"); - output_quoted_string (asm_file, na); - fputc ('\n', asm_file); -#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 cgraph_varpool_node *node; - bool needed = true; - node = cgraph_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. */ - -bool -wrapup_global_declarations (tree *vec, int len) -{ - bool reconsider, output_something = false; - int i; - - for (i = 0; i < len; i++) - 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 = false; - for (i = 0; i < len; i++) - reconsider |= wrapup_global_declaration_2 (vec[i]); - if (reconsider) - 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 (0, "%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 (0, "%q+D defined but not used", decl); -} - -/* Issue appropriate warnings for the global declarations in VEC (of - which there are LEN). */ - -void -check_global_declarations (tree *vec, int len) -{ - int i; - - for (i = 0; i < len; i++) - check_global_declaration_1 (vec[i]); -} - -/* 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. */ -void -warn_deprecated_use (tree node) -{ - if (node == 0 || !warn_deprecated_decl) - return; - - /* APPLE LOCAL begin radar 4746503 */ - if (current_function_decl && TREE_DEPRECATED (current_function_decl)) - return; - /* APPLE LOCAL end radar 4746503 */ - - if (DECL_P (node)) - { - 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); - } - else if (TYPE_P (node)) - { - const char *what = NULL; - tree decl = TYPE_STUB_DECL (node); - - if (TYPE_NAME (node)) - { - if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) - what = IDENTIFIER_POINTER (TYPE_NAME (node)); - else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL - && DECL_NAME (TYPE_NAME (node))) - what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))); - } - - if (decl) - { - expanded_location xloc - = expand_location (DECL_SOURCE_LOCATION (decl)); - if (what) - warning (OPT_Wdeprecated_declarations, - "%qs is deprecated (declared at %s:%d)", what, - xloc.file, xloc.line); - else - warning (OPT_Wdeprecated_declarations, - "type is deprecated (declared at %s:%d)", - xloc.file, xloc.line); - } - else - { - if (what) - warning (OPT_Wdeprecated_declarations, "%qs is deprecated", what); - else - warning (OPT_Wdeprecated_declarations, "type is deprecated"); - } - } -} - -/* APPLE LOCAL begin "unavailable" attribute (radar 2809697) --ilr */ -/* Warn about a use of an identifier which was marked deprecated. */ -void -error_unavailable_use (tree node) -{ - if (node == 0) - return; - - if (DECL_P (node)) - error ("%qs is unavailable (declared at %s:%d)", - IDENTIFIER_POINTER (DECL_NAME (node)), - DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node)); - else if (TYPE_P (node)) - { - const char *what = NULL; - tree decl = TYPE_STUB_DECL (node); - - if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) - what = IDENTIFIER_POINTER (TYPE_NAME (node)); - else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL - && DECL_NAME (TYPE_NAME (node))) - what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))); - - if (what) - { - if (decl) - error ("%qs is unavailable (declared at %s:%d)", what, - DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); - else - error ("%qs is unavailable", what); - } - else if (decl) - error ("type is unavailable (declared at %s:%d)", - DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); - else - error ("type is unavailable"); - } -} -/* APPLE LOCAL end "unavailable" attribute (radar 2809697) --ilr */ - -/* 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; - - 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; -#ifdef USE_MAPPED_LOCATION - input_location = fline; -#else - input_filename = file; - input_line = line; -#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. - Restore the INPUT_LOCATION from the new topmost entry on the - stack. */ - -void -pop_srcloc (void) -{ - 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; - 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 - output and various debugging dumps. */ - -static void -compile_file (void) -{ - /* Initialize yet another pass. */ - - init_cgraph (); - init_final (main_input_filename); - coverage_init (aux_base_name); - - timevar_push (TV_PARSE); - - /* Call the parser, which parses the entire file (calling - 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 || errorcount || sorrycount) - return; - - lang_hooks.decls.final_write_globals (); - cgraph_varpool_assemble_pending_decls (); - finish_aliases_2 (); - - /* This must occur after the loop to output deferred functions. - Else the coverage initializer would not be emitted if all the - functions in this compilation unit were deferred. */ - coverage_finish (); - - /* Likewise for mudflap static object registrations. */ - if (flag_mudflap) - mudflap_finish_file (); - - output_shared_constant_pool (); - output_object_blocks (); - - /* Write out any pending weak symbol declarations. */ - - weak_finish (); - - /* Do dbx symbols. */ - timevar_push (TV_SYMOUT); - -#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO - if (dwarf2out_do_frame ()) - dwarf2out_frame_finish (); -#endif - - (*debug_hooks->finish) (main_input_filename); - timevar_pop (TV_SYMOUT); - - /* Output some stuff at end of file if nec. */ - - 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. */ - process_pending_assemble_externals (); - - /* 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. */ -#ifdef IDENT_ASM_OP - if (!flag_no_ident) - fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", - IDENT_ASM_OP, version_string); -#endif - - /* 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 (); -} - -/* Parse a -d... command line switch. */ - -void -decode_d_option (const char *arg) -{ - int c; - - 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; - - case 'a': - default: - if (!enable_rtl_dump_file (c)) - warning (0, "unrecognized gcc debugging option: %c", c); - break; - } -} - -/* Indexed by enum debug_info_type. */ -const char *const debug_type_names[] = -{ - "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" -}; - -/* 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 version %s (%s)\n%s\tcompiled by GNU C version %s.\n") -#else - N_("%s%s%s version %s (%s) compiled by CC.\n") -#endif - ; - static const char fmt2[] = - N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); -#ifndef __VERSION__ -#define __VERSION__ "[?]" -#endif - fprintf (file, - file == stderr ? _(fmt1) : fmt1, - indent, *indent != 0 ? " " : "", - lang_hooks.name, version_string, TARGET_NAME, - indent, __VERSION__); - fprintf (file, - file == stderr ? _(fmt2) : fmt2, - indent, *indent != 0 ? " " : "", - PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); -} - -/* 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. */ - -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) -{ - /* 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); - - if (pos != 0 - && pos + len > max) - { - fprintf (file, "%s", term); - pos = 0; - } - if (pos == 0) - { - fprintf (file, "%s", indent); - pos = strlen (indent); - } - fprintf (file, "%s%s%s", sep, type, name); - pos += len; - return pos; -} - -/* Print active target switches to FILE. - 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) -{ - 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 (); - - /* Print the options as passed. */ - pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, - _("options passed: "), ""); - - for (p = &save_argv[1]; *p != NULL; p++) - if (**p == '-') - { - /* Ignore these. */ - if (strcmp (*p, "-o") == 0) - { - if (p[1] != NULL) - p++; - continue; - } - if (strcmp (*p, "-quiet") == 0) - continue; - if (strcmp (*p, "-version") == 0) - continue; - if ((*p)[1] == 'd') - continue; - /* APPLE LOCAL begin -fast or -fastf or -fastcp */ - if ((flag_fast || flag_fastf || flag_fastcp) - && (*p)[0] == '-' && (*p)[1] == 'O') - { - int optimize_val; - if ((*p)[2] == 's' && (*p)[3] == '\0') - continue; - optimize_val = read_integral_parameter (*p+2, 0, -1); - if (optimize_val != 3) - continue; - } - /* APPLE LOCAL end -fast or -fastf or -fastcp */ - - pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); - } - if (pos > 0) - fprintf (file, "%s", term); - - /* 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: "), ""); - - 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); - - fprintf (file, "%s", term); -} - -/* APPLE LOCAL begin option verifier 4957887 */ -/* Return a string (allocated using xmalloc) listing all the arguments - originally passed to the compiler. Arguments are separated by spaces, - and spaces or backslashes inside arguments are backslash-quoted. */ - -char * -get_arguments (void) -{ - size_t i; - size_t sz = 1; - char * result; - char * resultp; - - /* Make upper estimate of space required. */ - for (i = 0; save_argv[i] != NULL; i++) - sz += strlen (save_argv[i])*2 + 1; - - /* Build up result. */ - result = xmalloc (sz); - resultp = result; - for (i = 0; save_argv[i] != NULL; i++) - { - const char * arg_p = save_argv[i]; - while (*arg_p) - { - if (*arg_p == '\\' || *arg_p == ' ') - *resultp++ = '\\'; - *resultp++ = *arg_p++; - } - *resultp++ = ' '; - } - *resultp = 0; - return result; -} -/* APPLE LOCAL end option verifier 4957887 */ - -/* Open assembly code output file. Do this even if -fsyntax-only is - on, because then the driver will have provided the name of a - temporary file or bit bucket for us. NAME is the file specified on - the command line, possibly NULL. */ -static void -init_asm_output (const char *name) -{ - if (name == NULL && asm_file_name == 0) - asm_out_file = stdout; - else - { - if (asm_file_name == 0) - { - 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"); - asm_file_name = dumpname; - } - if (!strcmp (asm_file_name, "-")) - asm_out_file = stdout; - else - /* APPLE LOCAL begin ss2 */ - { - if (flag_save_repository - && flag_pch_file && !flag_debug_only_used_symbols) - { - asm_file_name2 = (char *) xmalloc (strlen (asm_file_name) + 3); - sprintf (asm_file_name2, "%s.t", asm_file_name); - asm_out_file = fopen (asm_file_name2, "w+b"); - } - else - asm_out_file = fopen (asm_file_name, "w+b"); - } - /* APPLE LOCAL end ss2 */ - if (asm_out_file == 0) - fatal_error ("can%'t open %s for writing: %m", asm_file_name); - } - - if (!flag_syntax_only) - { - targetm.asm_out.file_start (); - -#ifdef ASM_COMMENT_START - if (flag_verbose_asm) - { - /* Print the list of options in effect. */ - 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. */ - fprintf (asm_out_file, "\n"); - } -#endif - } -} - -/* Return true if the state of option OPTION should be stored in PCH files - and checked by default_pch_valid_p. Store the option's current state - in STATE if so. */ - -static inline bool -option_affects_pch_p (int option, struct cl_option_state *state) -{ - if ((cl_options[option].flags & CL_TARGET) == 0) - return false; - if (cl_options[option].flag_var == &target_flags) - if (targetm.check_pch_target_flags) - return false; - return get_option_state (option, state); -} - -/* Default version of get_pch_validity. - By default, every flag difference is fatal; that will be mostly right for - most targets, but completely right for very few. */ - -void * -default_get_pch_validity (size_t *len) -{ - struct cl_option_state state; - size_t i; - char *result, *r; - - *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 = XNEWVEC (char, *len); - r[0] = flag_pic; - r[1] = flag_pie; - r += 2; - if (targetm.check_pch_target_flags) - { - memcpy (r, &target_flags, sizeof (target_flags)); - r += sizeof (target_flags); - } - - for (i = 0; i < cl_options_count; i++) - if (option_affects_pch_p (i, &state)) - { - memcpy (r, state.data, state.size); - r += state.size; - } - - 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 * -default_pch_valid_p (const void *data_p, size_t len) -{ - struct cl_option_state state; - const char *data = (const char *)data_p; - 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"); - if (data[1] != flag_pie) - return _("created and used with different settings of -fpie"); - data += 2; - - /* Check target_flags. */ - if (targetm.check_pch_target_flags) - { - 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; - } - - for (i = 0; i < cl_options_count; i++) - if (option_affects_pch_p (i, &state)) - { - if (memcmp (data, state.data, state.size) != 0) - return pch_option_mismatch (cl_options[i].opt_text); - data += state.size; - len -= state.size; - } - - return NULL; -} - -/* Default tree printer. Handles declarations only. */ -static bool -default_tree_printer (pretty_printer * pp, text_info *text, const char *spec, - int precision, bool wide, bool set_locus, bool hash) -{ - tree t; - - /* FUTURE: %+x should set the locus. */ - if (precision != 0 || wide || hash) - return false; - - switch (*spec) - { - case 'D': - t = va_arg (*text->args_ptr, tree); - if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) - t = DECL_DEBUG_EXPR (t); - break; - - case 'F': - case 'T': - t = va_arg (*text->args_ptr, tree); - break; - - default: - return false; - } - - if (set_locus && text->locus) - *text->locus = DECL_SOURCE_LOCATION (t); - - if (DECL_P (t)) - { - const char *n = DECL_NAME (t) - ? lang_hooks.decl_printable_name (t, 2) - : "<anonymous>"; - pp_string (pp, n); - } - else - dump_generic_node (pp, t, 0, 0, 0); - - return true; -} - -/* Initialization of the front end environment, before command line - options are parsed. Signal handlers, internationalization etc. - ARGV0 is main's argv[0]. */ -static void -general_init (const char *argv0) -{ - const char *p; - - p = argv0 + strlen (argv0); - while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) - --p; - progname = p; - - xmalloc_set_program_name (progname); - - hex_init (); - - /* Unlock the stdio streams. */ - unlock_std_streams (); - - gcc_init_libintl (); - - /* Initialize the diagnostics reporting machinery, so option parsing - can give warnings and errors. */ - diagnostic_initialize (global_dc); - /* Set a default printer. Language specific initializations will - override it later. */ - pp_format_decoder (global_dc->printer) = &default_tree_printer; - - /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ -#ifdef SIGSEGV - signal (SIGSEGV, crash_signal); -#endif -#ifdef SIGILL - signal (SIGILL, crash_signal); -#endif -#ifdef SIGBUS - signal (SIGBUS, crash_signal); -#endif -#ifdef SIGABRT - signal (SIGABRT, crash_signal); -#endif -#if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) - signal (SIGIOT, crash_signal); -#endif -#ifdef SIGFPE - signal (SIGFPE, crash_signal); -#endif - - /* Other host-specific signal setup. */ - (*host_hooks.extra_signals)(); - - /* APPLE LOCAL begin setrlimit */ -#ifdef RLIMIT_STACK - /* Get rid of any avoidable limit on stack size. */ - { - struct rlimit rlim; - - /* Set the stack limit huge. (Compiles normally work within - a megabyte of stack, but the normal limit on OSX is 512K for - some reason.) */ - getrlimit (RLIMIT_STACK, &rlim); - rlim.rlim_cur = rlim.rlim_max; - setrlimit (RLIMIT_STACK, &rlim); - } -#endif /* RLIMIT_STACK defined */ - /* APPLE LOCAL end setrlimit */ - - /* Initialize the garbage-collector, string pools and tree type hash - table. */ - init_ggc (); - init_stringpool (); - linemap_init (&line_table); - init_ttree (); - - /* Initialize register usage now so switches may override. */ - init_reg_sets (); - - /* Register the language-independent parameters. */ - add_params (lang_independent_params, LAST_PARAM); - - /* APPLE LOCAL begin retune gc params 6124839 */ - { int i = 0; - bool opt = false; - while (save_argv[++i]) - { - if (strncmp (save_argv[i], "-O", 2) == 0 - && strcmp (save_argv[i], "-O0") != 0) - opt = true; - } - /* This must be done after add_params but before argument processing. */ - init_ggc_heuristics(opt); - } - /* APPLE LOCAL end retune gc params 6124839 */ - init_optimization_passes (); -} - -/* 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; -} - -/* 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 (); - - /* Set aux_base_name if not already set. */ - if (aux_base_name) - ; - else if (main_input_filename) - { - char *name = xstrdup (lbasename (main_input_filename)); - - strip_off_ending (name, strlen (name)); - aux_base_name = name; - } - 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. - web and rename-registers also help when run after loop unrolling. */ - - 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; - - /* Warn about options that are not supported on this machine. */ -#ifndef INSN_SCHEDULING - if (flag_schedule_insns || flag_schedule_insns_after_reload) - warning (0, "instruction scheduling not supported on this target machine"); -#endif -#ifndef DELAY_SLOTS - if (flag_delayed_branch) - warning (0, "this target machine does not have delayed branches"); -#endif - - user_label_prefix = USER_LABEL_PREFIX; - if (flag_leading_underscore != -1) - { - /* If the default prefix is more complicated than "" or "_", - issue a warning and ignore this option. */ - if (user_label_prefix[0] == 0 || - (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) - { - user_label_prefix = flag_leading_underscore ? "_" : ""; - } - else - warning (0, "-f%sleading-underscore not supported on this target machine", - flag_leading_underscore ? "" : "no-"); - } - - /* If we are in verbose mode, write out the version and maybe all the - option flags in use. */ - if (version_flag) - { - print_version (stderr, ""); - if (! quiet_flag) - print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); - } - - if (flag_syntax_only) - { - write_symbols = NO_DEBUG; - profile_flag = 0; - } - - /* A lot of code assumes write_symbols == NO_DEBUG if the debugging - level is 0. */ - if (debug_info_level == DINFO_LEVEL_NONE) - write_symbols = NO_DEBUG; - - /* 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) - ; -#if defined(DBX_DEBUGGING_INFO) - else if (write_symbols == DBX_DEBUG) - debug_hooks = &dbx_debug_hooks; -#endif -#if defined(XCOFF_DEBUGGING_INFO) - else if (write_symbols == XCOFF_DEBUG) - debug_hooks = &xcoff_debug_hooks; -#endif -#ifdef SDB_DEBUGGING_INFO - else if (write_symbols == SDB_DEBUG) - debug_hooks = &sdb_debug_hooks; -#endif -#ifdef DWARF2_DEBUGGING_INFO - else if (write_symbols == DWARF2_DEBUG) - debug_hooks = &dwarf2_debug_hooks; -#endif -#ifdef VMS_DEBUGGING_INFO - else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) - debug_hooks = &vmsdbg_debug_hooks; -#endif - else - 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 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 (0, "variable tracking requested, but useless unless " - "producing debug info"); - else - warning (0, "variable tracking requested, but not supported " - "by this debug format"); - } - flag_var_tracking = 0; - } - - 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_VALUE) - 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. */ - if (flag_gen_aux_info) - { - aux_info_file = fopen (aux_info_file_name, "w"); - if (aux_info_file == 0) - fatal_error ("can%'t open %s: %m", aux_info_file_name); - } - - if (! targetm.have_named_sections) - { - if (flag_function_sections) - { - warning (0, "-ffunction-sections not supported for this target"); - flag_function_sections = 0; - } - if (flag_data_sections) - { - warning (0, "-fdata-sections not supported for this target"); - flag_data_sections = 0; - } - } - - if (flag_function_sections && profile_flag) - { - warning (0, "-ffunction-sections disabled; it makes profiling impossible"); - flag_function_sections = 0; - } - -#ifndef HAVE_prefetch - if (flag_prefetch_loop_arrays) - { - warning (0, "-fprefetch-loop-arrays not supported for this target"); - flag_prefetch_loop_arrays = 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; - } -#endif - - /* This combination of options isn't handled for i386 targets and doesn't - make much sense anyway, so don't allow it. */ - if (flag_prefetch_loop_arrays && optimize_size) - { - warning (0, "-fprefetch-loop-arrays is not supported with -Os"); - flag_prefetch_loop_arrays = 0; - } - -#ifndef OBJECT_FORMAT_ELF -#ifndef OBJECT_FORMAT_MACHO - if (flag_function_sections && write_symbols != NO_DEBUG) - warning (0, "-ffunction-sections may affect debugging on some targets"); -#endif -#endif - - /* The presence of IEEE signaling NaNs, implies all math can trap. */ - if (flag_signaling_nans) - flag_trapping_math = 1; - - /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ - if (flag_cx_limited_range) - flag_complex_method = 0; - - /* APPLE LOCAL begin stack-protector default 5095227 */ - /* Unless the target chooses otherwise, default stack protection to off. */ - if (flag_stack_protect == -1) - flag_stack_protect = 0; - /* APPLE LOCAL end stack-protector default 5095227 */ - - /* APPLE LOCAL begin optimization pragmas 3124235/3420242 */ - cl_pf_opts_cooked = cl_pf_opts; - /* APPLE LOCAL end optimization pragmas 3124235/3420242 */ - - /* 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 requires a frame pointer " - "for correctness"); - flag_omit_frame_pointer = 0; - } -} - -/* Initialize the compiler back end. */ -static void -backend_init (void) -{ - init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL - || debug_info_level == DINFO_LEVEL_VERBOSE -#ifdef VMS_DEBUGGING_INFO - /* Enable line number info for traceback. */ - || debug_info_level > DINFO_LEVEL_NONE -#endif - || flag_test_coverage); - - init_rtlanal (); - init_regs (); - init_fake_stack_mems (); - init_alias_once (); - init_reload (); - init_varasm_once (); - - /* The following initialization functions need to generate rtl, so - provide a dummy function context for them. */ - init_dummy_function_start (); - init_expmed (); - /* APPLE LOCAL begin 4111151 optimization pragmas */ - /* We must do this if it will ever be turned on by pragmas. It's not - that expensive so just do it unconditionally. */ - /* if (flag_caller_saves) */ - /* APPLE LOCAL end 4111151 optimization pragmas */ - init_caller_save (); - expand_dummy_function_end (); -} - -/* Language-dependent initialization. Returns nonzero on success. */ -static int -lang_dependent_init (const char *name) -{ - location_t save_loc = input_location; - if (dump_base_name == 0) - 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 - 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 (); - - /* APPLE LOCAL begin mainline 5150147 */ - /* Although the actions of init_set_costs are language-independent, - it uses optabs, so we cannot call it from backend_init. */ - init_set_costs (); - /* APPLE LOCAL end mainline 5150147 */ - - expand_dummy_function_end (); - - /* If dbx symbol table desired, initialize writing it and output the - predefined types. */ - timevar_push (TV_SYMOUT); - -#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO - if (dwarf2out_do_frame ()) - dwarf2out_frame_init (); -#endif - - /* Now we have the correct original filename, we can initialize - debug output. */ - (*debug_hooks->init) (name); - - timevar_pop (TV_SYMOUT); - - return 1; -} - -/* Clean up: close opened files, etc. */ - -static void -finalize (void) -{ - /* Close the dump files. */ - if (flag_gen_aux_info) - { - fclose (aux_info_file); - if (errorcount) - unlink (aux_info_file_name); - } - - /* Close non-debugging input and output files. Take special care to note - whether fclose returns an error, since the pages might still be on the - buffer chain while the file is open. */ - - if (asm_out_file) - { - if (ferror (asm_out_file) != 0) - fatal_error ("error writing to %s: %m", asm_file_name); - /* APPLE LOCAL begin ss2 */ - if (flag_save_repository - && flag_pch_file - && !flag_debug_only_used_symbols) - unlink (asm_file_name2); - else if (fclose (asm_out_file) != 0) - /* APPLE LOCAL end ss2 */ - fatal_error ("error closing %s: %m", asm_file_name); - } - - 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 (); -} - -/* Initialize the compiler, and compile the input file. */ -static void -do_compile (void) -{ - /* Initialize timing first. The C front ends read the main file in - the post_options hook, and C++ does file timings. */ - if (time_report || !quiet_flag || flag_detailed_statistics) - timevar_init (); - timevar_start (TV_TOTAL); - - process_options (); - - /* Don't do any more if an error has already occurred. */ - if (!errorcount) - { - /* This must be run always, because it is needed to compute the FP - predefined macros, such as __LDBL_MAX__, for targets using non - default FP formats. */ - init_adjust_machine_modes (); - - /* Set up the back-end if requested. */ - if (!no_backend) - backend_init (); - - /* Language-dependent initialization. Returns true on success. */ - if (lang_dependent_init (main_input_filename)) - compile_file (); - - finalize (); - } - - /* Stop timing and print the times. */ - timevar_stop (TV_TOTAL); - timevar_print (stderr); -} - -/* Entry point of cc1, cc1plus, jc1, f771, etc. - Exit code is FATAL_EXIT_CODE if can't open files or if there were - any errors, or SUCCESS_EXIT_CODE if compilation succeeded. - - It is not safe to call this function more than once. */ - -int -toplev_main (unsigned int argc, const char **argv) -{ - save_argv = argv; - - /* Initialization of GCC's environment, and diagnostics. */ - general_init (argv[0]); - - /* Parse the options and do minimal processing; basically just - enough to default flags appropriately. */ - decode_options (argc, argv); - - randomize (); - - /* Exit early if we can (e.g. -help). */ - if (!exit_after_options) - do_compile (); - - if (errorcount || sorrycount) - return (FATAL_EXIT_CODE); - - return (SUCCESS_EXIT_CODE); -} |