/* 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, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 Free Software Foundation, Inc.
This file is part of GCC.
#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 "integrate.h"
#include "debug.h"
#include "target.h"
+#include "common/common-target.h"
#include "langhooks.h"
#include "cfglayout.h"
#include "cfgloop.h"
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 finalize (bool);
static void crash_signal (int) ATTRIBUTE_NORETURN;
-static void setup_core_dumping (void);
static void compile_file (void);
-/* 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;
struct cl_decoded_option *save_decoded_options;
unsigned int save_decoded_options_count;
-/* 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;
-
/* Used to enable -fvar-tracking, -fweb and -frename-registers according
to optimize in process_options (). */
#define AUTODETECT_VALUE 2
-/* Name to use as base of names for dump output files. */
-
-const char *dump_base_name;
-
-/* Directory used for dump output files. */
-
-const char *dump_dir_name;
-
-/* Name to use as a base for auxiliary output files. */
-
-const char *aux_base_name;
-
-/* 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 target_flags_explicit;
-
/* Debug hooks - dependent upon command line options. */
const struct gcc_debug_hooks *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;
-
-/* True if this is the lto front end. This is used to disable
- gimple generation and lowering passes that are normally run on the
- output of a front end. These passes must be bypassed for lto since
- they have already been done before the gimple was written. */
-
-bool in_lto_p = false;
-
-/* Nonzero if we should write GIMPLE bytecode for link-time optimization. */
-
-int flag_generate_lto;
-
/* The FUNCTION_DECL for the function currently being compiled,
or 0 if between functions. */
tree current_function_decl;
user has specified a particular random seed. */
unsigned local_tick;
-/* -f flags. */
-
-/* 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;
-
-/* 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. */
+/* Random number for this compilation */
+HOST_WIDE_INT random_seed;
-#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;
-
-/* Set the default region and algorithm for the integrated register
- allocator. */
-
-enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB;
-enum ira_region flag_ira_region = IRA_REGION_MIXED;
-
-/* Set the default for excess precision. */
-
-enum excess_precision flag_excess_precision_cmdline = EXCESS_PRECISION_DEFAULT;
-
-/* Nonzero means change certain warnings into errors.
- Usually these are warnings about failure to conform to some standard. */
-
-int flag_pedantic_errors = 0;
+/* -f flags. */
/* 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
- 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
the support provided depends on the backend. */
rtx stack_limit_rtx;
-/* Type of stack check. */
-enum stack_check_type flag_stack_check = NO_STACK_CHECK;
-
/* True if the user has tagged the function with the 'section'
attribute. */
#define this_target_flag_state (&default_target_flag_state)
#endif
-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, false, MIN, MAX, HELP },
-#include "params.def"
-#undef DEFPARAM
- { NULL, 0, false, 0, 0, NULL }
-};
-
/* Output files for assembler code (real compiler output)
and debugging dumps. */
}
}
-/* Initialize local_tick with the time of day, or -1 if
+/* Initialize local_tick with a random number or -1 if
flag_random_seed is set. */
static void
{
if (!flag_random_seed)
{
- /* Get some more or less random data. */
+ /* Try urandom first. Time of day is too likely to collide.
+ In case of any error we just use the local tick. */
+
+ int fd = open ("/dev/urandom", O_RDONLY);
+ if (fd >= 0)
+ {
+ read (fd, &random_seed, sizeof (random_seed));
+ close (fd);
+ }
+
+ /* Now get the tick anyways */
#ifdef HAVE_GETTIMEOFDAY
{
struct timeval tv;
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 ();
+ if (flag_random_seed)
+ {
+ char *endp;
- sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
- flag_random_seed = random_seed;
+ /* When the driver passed in a hex number don't crc it again */
+ random_seed = strtoul (flag_random_seed, &endp, 0);
+ if (!(endp > flag_random_seed && *endp == 0))
+ random_seed = crc32_string (0, flag_random_seed);
+ }
+ else if (!random_seed)
+ random_seed = local_tick ^ getpid (); /* Old racey fallback method */
}
-/* Obtain the random_seed string. Unless NOINIT, initialize it if
+/* Obtain the random_seed. Unless NOINIT, initialize it if
it's not provided in the command line. */
-const char *
+HOST_WIDE_INT
get_random_seed (bool noinit)
{
if (!flag_random_seed && !noinit)
init_random_seed ();
- return flag_random_seed;
+ return random_seed;
}
/* Modify the random_seed string to VAL. Return its previous
return old;
}
-#if GCC_VERSION < 3004
-
-/* The functions clz_hwi, ctz_hwi, ffs_hwi, floor_log2 and exact_log2
- are defined as inline functions in toplev.h if GCC_VERSION >= 3004.
- The definitions here are used for older versions of gcc. */
-
-/* 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;
-
- 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;
-
- 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;
- return floor_log2 (x);
-}
-
-/* Given X, an unsigned number, return the number of least significant bits
- that are zero. When X == 0, the result is the word size. */
-
-int
-ctz_hwi (unsigned HOST_WIDE_INT x)
-{
- return x ? floor_log2 (x & -x) : HOST_BITS_PER_WIDE_INT;
-}
-
-/* Similarly for most significant bits. */
-
-int
-clz_hwi (unsigned HOST_WIDE_INT x)
-{
- return HOST_BITS_PER_WIDE_INT - 1 - floor_log2(x);
-}
-
-/* Similar to ctz_hwi, except that the least significant bit is numbered
- starting from 1, and X == 0 yields 0. */
-
-int
-ffs_hwi (unsigned HOST_WIDE_INT x)
-{
- return 1 + floor_log2 (x & -x);
-}
-
-#endif /* GCC_VERSION < 3004 */
-
/* 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. */
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
-}
-
/* 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. */
timevar_pop (TV_SYMOUT);
}
-/* Warn about a use of an identifier which was marked deprecated. */
-void
-warn_deprecated_use (tree node, tree attr)
-{
- const char *msg;
-
- if (node == 0 || !warn_deprecated_decl)
- return;
-
- if (!attr)
- {
- if (DECL_P (node))
- attr = DECL_ATTRIBUTES (node);
- else if (TYPE_P (node))
- {
- tree decl = TYPE_STUB_DECL (node);
- if (decl)
- attr = lookup_attribute ("deprecated",
- TYPE_ATTRIBUTES (TREE_TYPE (decl)));
- }
- }
-
- if (attr)
- attr = lookup_attribute ("deprecated", attr);
-
- if (attr)
- msg = TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr)));
- else
- msg = NULL;
-
- if (DECL_P (node))
- {
- expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node));
- if (msg)
- warning (OPT_Wdeprecated_declarations,
- "%qD is deprecated (declared at %s:%d): %s",
- node, xloc.file, xloc.line, msg);
- else
- warning (OPT_Wdeprecated_declarations,
- "%qD is deprecated (declared at %s:%d)",
- node, xloc.file, xloc.line);
- }
- else if (TYPE_P (node))
- {
- tree what = NULL_TREE;
- tree decl = TYPE_STUB_DECL (node);
-
- if (TYPE_NAME (node))
- {
- if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
- what = TYPE_NAME (node);
- else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
- && DECL_NAME (TYPE_NAME (node)))
- what = DECL_NAME (TYPE_NAME (node));
- }
-
- if (decl)
- {
- expanded_location xloc
- = expand_location (DECL_SOURCE_LOCATION (decl));
- if (what)
- {
- if (msg)
- warning (OPT_Wdeprecated_declarations,
- "%qE is deprecated (declared at %s:%d): %s",
- what, xloc.file, xloc.line, msg);
- else
- warning (OPT_Wdeprecated_declarations,
- "%qE is deprecated (declared at %s:%d)", what,
- xloc.file, xloc.line);
- }
- else
- {
- if (msg)
- warning (OPT_Wdeprecated_declarations,
- "type is deprecated (declared at %s:%d): %s",
- xloc.file, xloc.line, msg);
- else
- warning (OPT_Wdeprecated_declarations,
- "type is deprecated (declared at %s:%d)",
- xloc.file, xloc.line);
- }
- }
- else
- {
- if (what)
- {
- if (msg)
- warning (OPT_Wdeprecated_declarations, "%qE is deprecated: %s",
- what, msg);
- else
- warning (OPT_Wdeprecated_declarations, "%qE is deprecated", what);
- }
- else
- {
- if (msg)
- warning (OPT_Wdeprecated_declarations, "type is deprecated: %s",
- msg);
- else
- warning (OPT_Wdeprecated_declarations, "type is deprecated");
- }
- }
- }
-}
-
/* Compile an entire translation unit. Write a file of assembly
output and various debugging dumps. */
static void
compile_file (void)
{
- /* Initialize yet another pass. */
-
- ggc_protect_identifiers = true;
-
- init_cgraph ();
- init_final (main_input_filename);
- coverage_init (aux_base_name);
- statistics_init ();
- invoke_plugin_callbacks (PLUGIN_START_UNIT, NULL);
-
- timevar_push (TV_PARSE);
+ timevar_start (TV_PHASE_PARSING);
+ timevar_push (TV_PARSE_GLOBAL);
/* Call the parser, which parses the entire file (calling
rest_of_compilation for each function). */
- lang_hooks.parse_file (set_yydebug);
+ lang_hooks.parse_file ();
+
+ timevar_pop (TV_PARSE_GLOBAL);
+ timevar_stop (TV_PHASE_PARSING);
/* Compilation is now finished except for writing
what's left of the symbol table output. */
- timevar_pop (TV_PARSE);
if (flag_syntax_only || flag_wpa)
return;
+ timevar_start (TV_PHASE_GENERATE);
+
ggc_protect_identifiers = false;
/* This must also call cgraph_finalize_compilation_unit. */
lang_hooks.decls.final_write_globals ();
if (seen_error ())
- return;
+ {
+ timevar_stop (TV_PHASE_GENERATE);
+ return;
+ }
- varpool_assemble_pending_decls ();
- finish_aliases_2 ();
+ /* Compilation unit is finalized. When producing non-fat LTO object, we are
+ basically finished. */
+ if (in_lto_p || !flag_lto || flag_fat_lto_objects)
+ {
+ varpool_assemble_pending_decls ();
+ finish_aliases_2 ();
- /* Likewise for mudflap static object registrations. */
- if (flag_mudflap)
- mudflap_finish_file ();
+ /* Likewise for mudflap static object registrations. */
+ if (flag_mudflap)
+ mudflap_finish_file ();
- output_shared_constant_pool ();
- output_object_blocks ();
+ output_shared_constant_pool ();
+ output_object_blocks ();
+ finish_tm_clone_pairs ();
- /* Write out any pending weak symbol declarations. */
- weak_finish ();
+ /* Write out any pending weak symbol declarations. */
+ weak_finish ();
- /* This must be at the end before unwind and debug info.
- Some target ports emit PIC setup thunks here. */
- targetm.asm_out.code_end ();
+ /* This must be at the end before unwind and debug info.
+ Some target ports emit PIC setup thunks here. */
+ targetm.asm_out.code_end ();
- /* Do dbx symbols. */
- timevar_push (TV_SYMOUT);
+ /* Do dbx symbols. */
+ timevar_push (TV_SYMOUT);
-#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
- if (dwarf2out_do_frame ())
- dwarf2out_frame_finish ();
-#endif
+ #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);
+ (*debug_hooks->finish) (main_input_filename);
+ timevar_pop (TV_SYMOUT);
- /* Output some stuff at end of file if nec. */
+ /* Output some stuff at end of file if nec. */
- dw2_output_indirect_constants ();
+ dw2_output_indirect_constants ();
- /* Flush any pending external directives. */
- process_pending_assemble_externals ();
+ /* Flush any pending external directives. */
+ process_pending_assemble_externals ();
+ }
/* Emit LTO marker if LTO info has been previously emitted. This is
used by collect2 to determine whether an object file contains IL.
(unsigned HOST_WIDE_INT) 1,
(unsigned HOST_WIDE_INT) 1);
#endif
+ /* Let linker plugin know that this is a slim object and must be LTOed
+ even when user did not ask for it. */
+ if (!flag_fat_lto_objects)
+ {
+#if defined ASM_OUTPUT_ALIGNED_DECL_COMMON
+ ASM_OUTPUT_ALIGNED_DECL_COMMON (asm_out_file, NULL_TREE,
+ "__gnu_lto_slim",
+ (unsigned HOST_WIDE_INT) 1, 8);
+#elif defined ASM_OUTPUT_ALIGNED_COMMON
+ ASM_OUTPUT_ALIGNED_COMMON (asm_out_file, "__gnu_lto_slim",
+ (unsigned HOST_WIDE_INT) 1, 8);
+#else
+ ASM_OUTPUT_COMMON (asm_out_file, "__gnu_lto_slim",
+ (unsigned HOST_WIDE_INT) 1,
+ (unsigned HOST_WIDE_INT) 1);
+#endif
+ }
}
/* Attach a special .ident directive to the end of the file to identify
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':
- case 'M':
- case 'N':
- case 'U':
- break;
- case 'H':
- setup_core_dumping();
- break;
- case 'a':
- enable_rtl_dump_file ();
- break;
-
- default:
- warning (0, "unrecognized gcc debugging option: %c", c);
- break;
- }
+ timevar_stop (TV_PHASE_GENERATE);
}
-/* 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). */
print_plugins_versions (file, indent);
}
-#ifdef ASM_COMMENT_START
static int
print_to_asm_out_file (print_switch_type type, const char * text)
{
return -1;
}
}
-#endif
static int
print_to_stderr (print_switch_type type, const char * text)
SWITCH_TYPE_DESCRIPTIVE, _("options enabled: "));
for (j = 0; j < cl_options_count; j++)
- if ((cl_options[j].flags & CL_REPORT)
+ if (cl_options[j].cl_report
&& option_enabled (j, &global_options) > 0)
pos = print_single_switch (print_fn, pos,
SWITCH_TYPE_ENABLED, cl_options[j].opt_text);
inform (input_location, "-frecord-gcc-switches is not supported by the current target");
}
-#ifdef ASM_COMMENT_START
if (flag_verbose_asm)
{
/* Print the list of switches in effect
print_switch_values (print_to_asm_out_file);
putc ('\n', asm_out_file);
}
-#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 (option_flag_var (option, &global_options) == &target_flags)
- if (targetm.check_pch_target_flags)
- return false;
- return get_option_state (&global_options, 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 *sz)
-{
- struct cl_option_state state;
- size_t i;
- char *result, *r;
-
- *sz = 2;
- if (targetm.check_pch_target_flags)
- *sz += sizeof (target_flags);
- for (i = 0; i < cl_options_count; i++)
- if (option_affects_pch_p (i, &state))
- *sz += state.size;
-
- result = r = XNEWVEC (char, *sz);
- 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. */
bool
default_tree_printer (pretty_printer *pp, text_info *text, const char *spec,
};
HOST_WIDE_INT stack_usage = current_function_static_stack_size;
enum stack_usage_kind_type stack_usage_kind;
- expanded_location loc;
- const char *raw_id, *id;
if (stack_usage < 0)
{
if (!warning_issued)
{
- warning (0, "-fstack-usage not supported for this target");
+ warning (0, "stack usage computation not supported for this target");
warning_issued = true;
}
return;
stack_usage += current_function_dynamic_stack_size;
}
- loc = expand_location (DECL_SOURCE_LOCATION (current_function_decl));
+ if (flag_stack_usage)
+ {
+ expanded_location loc
+ = expand_location (DECL_SOURCE_LOCATION (current_function_decl));
+ const char *raw_id, *id;
+
+ /* Strip the scope prefix if any. */
+ raw_id = lang_hooks.decl_printable_name (current_function_decl, 2);
+ id = strrchr (raw_id, '.');
+ if (id)
+ id++;
+ else
+ id = raw_id;
+
+ fprintf (stack_usage_file,
+ "%s:%d:%d:%s\t"HOST_WIDE_INT_PRINT_DEC"\t%s\n",
+ lbasename (loc.file),
+ loc.line,
+ loc.column,
+ id,
+ stack_usage,
+ stack_usage_kind_str[stack_usage_kind]);
+ }
- /* Strip the scope prefix if any. */
- raw_id = lang_hooks.decl_printable_name (current_function_decl, 2);
- id = strrchr (raw_id, '.');
- if (id)
- id++;
- else
- id = raw_id;
-
- fprintf (stack_usage_file,
- "%s:%d:%d:%s\t"HOST_WIDE_INT_PRINT_DEC"\t%s\n",
- lbasename (loc.file),
- loc.line,
- loc.column,
- id,
- stack_usage,
- stack_usage_kind_str[stack_usage_kind]);
+ if (warn_stack_usage >= 0)
+ {
+ if (stack_usage_kind == DYNAMIC)
+ warning (OPT_Wstack_usage_, "stack usage might be unbounded");
+ else if (stack_usage > warn_stack_usage)
+ {
+ if (stack_usage_kind == DYNAMIC_BOUNDED)
+ warning (OPT_Wstack_usage_, "stack usage might be %wd bytes",
+ stack_usage);
+ else
+ warning (OPT_Wstack_usage_, "stack usage is %wd bytes",
+ stack_usage);
+ }
+ }
}
/* Open an auxiliary output file. */
filename = concat (aux_base_name, ".", ext, NULL);
file = fopen (filename, "w");
if (!file)
- fatal_error ("can't open %s for writing: %m", filename);
+ fatal_error ("can%'t open %s for writing: %m", filename);
free (filename);
return file;
}
can give warnings and errors. */
diagnostic_initialize (global_dc, N_OPTS);
diagnostic_starter (global_dc) = default_tree_diagnostic_starter;
+ /* By default print macro expansion contexts in the diagnostic
+ finalizer -- for tokens resulting from macro macro expansion. */
+ diagnostic_finalizer (global_dc) = virt_loc_aware_diagnostic_finalizer;
/* Set a default printer. Language specific initializations will
override it later. */
pp_format_decoder (global_dc->printer) = &default_tree_printer;
- global_dc->show_option_requested = flag_diagnostics_show_option;
- global_dc->show_column = flag_show_column;
+ global_dc->show_option_requested
+ = global_options_init.x_flag_diagnostics_show_option;
+ global_dc->show_column
+ = global_options_init.x_flag_show_column;
global_dc->internal_error = plugins_internal_error_function;
global_dc->option_enabled = option_enabled;
global_dc->option_state = &global_options;
line_table = ggc_alloc_line_maps ();
linemap_init (line_table);
line_table->reallocator = realloc_for_line_map;
+ line_table->round_alloc_size = ggc_round_alloc_size;
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);
+ global_init_params ();
- /* This must be done after add_params but before argument processing. */
+ /* This must be done after global_init_params but before argument
+ processing. */
init_ggc_heuristics();
init_optimization_passes ();
statistics_early_init ();
+ finish_params ();
}
/* Return true if the current target supports -fsection-anchors. */
This can happen with incorrect pre-processed input. */
debug_hooks = &do_nothing_debug_hooks;
- /* This replaces set_Wunused. */
- if (warn_unused_function == -1)
- warn_unused_function = warn_unused;
- if (warn_unused_label == -1)
- warn_unused_label = warn_unused;
- /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */
- if (warn_unused_parameter == -1)
- warn_unused_parameter = (warn_unused && extra_warnings);
- if (warn_unused_variable == -1)
- warn_unused_variable = warn_unused;
- /* Wunused-but-set-parameter is enabled if both -Wunused -Wextra are
- enabled. */
- if (warn_unused_but_set_parameter == -1)
- warn_unused_but_set_parameter = (warn_unused && extra_warnings);
- if (warn_unused_but_set_variable == -1)
- warn_unused_but_set_variable = warn_unused;
- if (warn_unused_value == -1)
- warn_unused_value = warn_unused;
-
- /* This replaces set_Wextra. */
- if (warn_uninitialized == -1)
- warn_uninitialized = extra_warnings;
+ maximum_field_alignment = initial_max_fld_align * BITS_PER_UNIT;
/* Allow the front end to perform consistency checks and do further
initialization based on the command line options. This hook also
#ifndef HAVE_cloog
if (flag_graphite
+ || flag_graphite_identity
|| flag_loop_block
+ || flag_loop_flatten
|| flag_loop_interchange
|| flag_loop_strip_mine
- || flag_graphite_identity
|| flag_loop_parallelize_all)
- sorry ("Graphite loop optimizations cannot be used");
+ sorry ("Graphite loop optimizations cannot be used (-fgraphite, "
+ "-fgraphite-identity, -floop-block, -floop-flatten, "
+ "-floop-interchange, -floop-strip-mine, -floop-parallelize-all, "
+ "and -ftree-loop-linear)");
#endif
+ if (flag_mudflap && flag_lto)
+ sorry ("mudflap cannot be used together with link-time optimization");
+
+ /* One region RA really helps to decrease the code size. */
+ if (flag_ira_region == IRA_REGION_AUTODETECT)
+ flag_ira_region
+ = optimize_size || !optimize ? IRA_REGION_ONE : IRA_REGION_MIXED;
+
+ if (flag_strict_volatile_bitfields > 0 && !abi_version_at_least (2))
+ {
+ warning (0, "-fstrict-volatile-bitfields disabled; "
+ "it is incompatible with ABI versions < 2");
+ flag_strict_volatile_bitfields = 0;
+ }
+
/* 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;
-
+ /* web and rename-registers help when run after loop unrolling. */
if (flag_web == AUTODETECT_VALUE)
flag_web = flag_unroll_loops || flag_peel_loops;
flag_var_tracking_uninit = 0;
}
+ /* The debug hooks are used to implement -fdump-go-spec because it
+ gives a simple and stable API for all the information we need to
+ dump. */
+ if (flag_dump_go_spec != NULL)
+ debug_hooks = dump_go_spec_init (flag_dump_go_spec, debug_hooks);
+
/* 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)
+ if (flag_var_tracking_uninit == 1)
flag_var_tracking = 1;
if (flag_var_tracking == AUTODETECT_VALUE)
flag_var_tracking = optimize >= 1;
+ if (flag_var_tracking_uninit == AUTODETECT_VALUE)
+ flag_var_tracking_uninit = flag_var_tracking;
+
if (flag_var_tracking_assignments == AUTODETECT_VALUE)
flag_var_tracking_assignments = flag_var_tracking
&& !(flag_selective_scheduling || flag_selective_scheduling2);
fatal_error ("can%'t open %s: %m", aux_info_file_name);
}
- if (! targetm.have_named_sections)
+ if (!targetm_common.have_named_sections)
{
if (flag_function_sections)
{
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;
- }
+ /* Enable -Werror=coverage-mismatch when -Werror and -Wno-error
+ have not been set. */
+ if (!global_options_set.x_warnings_are_errors
+ && warn_coverage_mismatch
+ && (global_dc->classify_diagnostic[OPT_Wcoverage_mismatch] ==
+ DK_UNSPECIFIED))
+ diagnostic_classify_diagnostic (global_dc, OPT_Wcoverage_mismatch,
+ DK_ERROR, UNKNOWN_LOCATION);
/* Save the current optimization options. */
optimization_default_node = build_optimization_node ();
return 0;
input_location = save_loc;
- init_asm_output (name);
+ if (!flag_wpa)
+ {
+ init_asm_output (name);
- /* If stack usage information is desired, open the output file. */
- if (flag_stack_usage)
- stack_usage_file = open_auxiliary_file ("su");
+ /* If stack usage information is desired, open the output file. */
+ if (flag_stack_usage)
+ stack_usage_file = open_auxiliary_file ("su");
+ }
/* This creates various _DECL nodes, so needs to be called after the
front end is initialized. */
/* 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);
-
-#if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
- if (dwarf2out_do_frame ())
- dwarf2out_frame_init ();
-#endif
+ if (!flag_wpa)
+ {
+ /* If dbx symbol table desired, initialize writing it and output the
+ predefined types. */
+ timevar_push (TV_SYMOUT);
- /* Now we have the correct original filename, we can initialize
- debug output. */
- (*debug_hooks->init) (name);
+ /* Now we have the correct original filename, we can initialize
+ debug output. */
+ (*debug_hooks->init) (name);
- timevar_pop (TV_SYMOUT);
+ timevar_pop (TV_SYMOUT);
+ }
return 1;
}
void
target_reinit (void)
{
+ struct rtl_data saved_x_rtl;
+ rtx *saved_regno_reg_rtx;
+
+ /* Save *crtl and regno_reg_rtx around the reinitialization
+ to allow target_reinit being called even after prepare_function_start. */
+ saved_regno_reg_rtx = regno_reg_rtx;
+ if (saved_regno_reg_rtx)
+ {
+ saved_x_rtl = *crtl;
+ memset (crtl, '\0', sizeof (*crtl));
+ regno_reg_rtx = NULL;
+ }
+
/* Reinitialize RTL backend. */
backend_init_target ();
/* Reinitialize lang-dependent parts. */
lang_dependent_init_target ();
+
+ /* And restore it at the end, as free_after_compilation from
+ expand_dummy_function_end clears it. */
+ if (saved_regno_reg_rtx)
+ {
+ *crtl = saved_x_rtl;
+ regno_reg_rtx = saved_regno_reg_rtx;
+ saved_regno_reg_rtx = NULL;
+ }
}
void
dump_memory_report (bool final)
{
+ dump_line_table_statistics ();
ggc_print_statistics ();
stringpool_statistics ();
dump_tree_statistics ();
/* Clean up: close opened files, etc. */
static void
-finalize (void)
+finalize (bool no_backend)
{
/* Close the dump files. */
if (flag_gen_aux_info)
fatal_error ("error writing to %s: %m", asm_file_name);
if (fclose (asm_out_file) != 0)
fatal_error ("error closing %s: %m", asm_file_name);
- if (flag_wpa)
- unlink_if_ordinary (asm_file_name);
}
if (stack_usage_file)
fclose (stack_usage_file);
- statistics_fini ();
- finish_optimization_passes ();
+ if (!no_backend)
+ {
+ statistics_fini ();
+
+ finish_optimization_passes ();
- ira_finish_once ();
+ ira_finish_once ();
+ }
if (mem_report)
dump_memory_report (true);
/* Don't do any more if an error has already occurred. */
if (!seen_error ())
{
+ timevar_start (TV_PHASE_SETUP);
+
/* 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. */
/* Language-dependent initialization. Returns true on success. */
if (lang_dependent_init (main_input_filename))
- compile_file ();
+ {
+ /* Initialize yet another pass. */
+
+ ggc_protect_identifiers = true;
+
+ init_cgraph ();
+ init_final (main_input_filename);
+ coverage_init (aux_base_name);
+ statistics_init ();
+ invoke_plugin_callbacks (PLUGIN_START_UNIT, NULL);
+
+ timevar_stop (TV_PHASE_SETUP);
+
+ compile_file ();
+ }
+ else
+ {
+ timevar_stop (TV_PHASE_SETUP);
+ }
- finalize ();
+ timevar_start (TV_PHASE_FINALIZE);
+
+ finalize (no_backend);
+
+ timevar_stop (TV_PHASE_FINALIZE);
}
/* Stop timing and print the times. */
int
toplev_main (int argc, char **argv)
{
+ /* Parsing and gimplification sometimes need quite large stack.
+ Increase stack size limits if possible. */
+ stack_limit_increase (64 * 1024 * 1024);
+
expandargv (&argc, &argv);
/* Initialization of GCC's environment, and diagnostics. */
general_init (argv[0]);
+ /* One-off initialization of options that does not need to be
+ repeated when options are added for particular functions. */
+ init_options_once ();
+
+ /* Initialize global options structures; this must be repeated for
+ each structure used for parsing options. */
+ init_options_struct (&global_options, &global_options_set);
+ lang_hooks.init_options_struct (&global_options);
+
+ /* Convert the options to an array. */
+ decode_cmdline_options_to_array_default_mask (argc,
+ CONST_CAST2 (const char **,
+ char **, argv),
+ &save_decoded_options,
+ &save_decoded_options_count);
+
+ /* Perform language-specific options initialization. */
+ lang_hooks.init_options (save_decoded_options_count, save_decoded_options);
+
/* Parse the options and do minimal processing; basically just
enough to default flags appropriately. */
- decode_options (argc, CONST_CAST2 (const char **, char **, argv),
- &save_decoded_options, &save_decoded_options_count);
+ decode_options (&global_options, &global_options_set,
+ save_decoded_options, save_decoded_options_count,
+ UNKNOWN_LOCATION, global_dc);
+
+ handle_common_deferred_options ();
init_local_tick ();
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