/* 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
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
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
location_t input_location;
-struct line_maps line_table;
-
-/* 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;
+struct line_maps *line_table;
/* Name to use as base of names for dump output files. */
const char *aux_base_name;
-/* Bit flags that specify the machine subtype we are compiling for.
- Bits are tested using macros TARGET_... defined in the tm.h file
- and set by `-m...' switches. Must be defined in rtlanal.c. */
-
-extern int target_flags;
+/* Prefix for profile data files */
+const char *profile_data_prefix;
/* A mask of target_flags that includes bit X if X was set or cleared
on the command line. */
int flag_pedantic_errors = 0;
+/* Nonzero means make permerror produce warnings instead of errors. */
+
+int flag_permissive = 0;
+
/* -dA causes debug commentary information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read the
fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2));
fflush (stderr);
pp_needs_newline (global_dc->printer) = true;
- diagnostic_set_last_function (global_dc);
+ diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL);
}
}
if (input_name == NULL)
input_name = "<stdin>";
+ else
+ input_name = remap_debug_filename (input_name);
len = strlen (input_name);
na = input_name + len;
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
pedwarn ("%q+F used but never defined", decl);
else
- warning (0, "%q+F declared %<static%> but never defined", decl);
+ warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl);
/* This symbol is effectively an "extern" declaration now. */
TREE_PUBLIC (decl) = 1;
assemble_external (decl);
&& ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
/* Otherwise, ask the language. */
&& lang_hooks.decls.warn_unused_global (decl))
- warning (0, "%q+D defined but not used", decl);
+ warning ((TREE_CODE (decl) == FUNCTION_DECL)
+ ? OPT_Wunused_function
+ : OPT_Wunused_variable,
+ "%q+D defined but not used", decl);
}
/* Issue appropriate warnings for the global declarations in VEC (of
}
}
-/* 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. */
{
/* Initialize yet another pass. */
+ ggc_protect_identifiers = true;
+
init_cgraph ();
init_final (main_input_filename);
coverage_init (aux_base_name);
+ statistics_init ();
timevar_push (TV_PARSE);
rest_of_compilation for each function). */
lang_hooks.parse_file (set_yydebug);
- /* In case there were missing block closers,
- get us back to the global binding level. */
- lang_hooks.clear_binding_stack ();
-
/* Compilation is now finished except for writing
what's left of the symbol table output. */
timevar_pop (TV_PARSE);
if (flag_syntax_only)
return;
+ ggc_protect_identifiers = false;
+
lang_hooks.decls.final_write_globals ();
if (errorcount || sorrycount)
string is patterned after the ones produced by native SVR4 compilers. */
#ifdef IDENT_ASM_OP
if (!flag_no_ident)
- fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
- IDENT_ASM_OP, version_string);
+ {
+ const char *pkg_version = "(GNU) ";
+
+ if (strcmp ("(GCC) ", pkgversion_string))
+ pkg_version = pkgversion_string;
+ fprintf (asm_out_file, "%s\"GCC: %s%s\"\n",
+ IDENT_ASM_OP, pkg_version, version_string);
+ }
#endif
/* This must be at the end. Some target ports emit end of file directives
break;
case 'D': /* These are handled by the preprocessor. */
case 'I':
+ case 'M':
+ case 'N':
+ case 'U':
break;
case 'H':
setup_core_dumping();
break;
-
case 'a':
+ enable_rtl_dump_file ();
+ break;
+
default:
- if (!enable_rtl_dump_file (c))
warning (0, "unrecognized gcc debugging option: %c", c);
break;
}
{
static const char fmt1[] =
#ifdef __GNUC__
- N_("%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s, ")
+ N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ")
#else
- N_("%s%s%s version %s (%s) compiled by CC, ")
+ N_("%s%s%s %sversion %s (%s) compiled by CC, ")
#endif
;
static const char fmt2[] =
N_("GMP version %s, MPFR version %s.\n");
static const char fmt3[] =
- N_("warning: %s header version %s differs from library version %s.\n");
+ N_("%s%swarning: %s header version %s differs from library version %s.\n");
static const char fmt4[] =
N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n");
#ifndef __VERSION__
fprintf (file,
file == stderr ? _(fmt1) : fmt1,
indent, *indent != 0 ? " " : "",
- lang_hooks.name, version_string, TARGET_NAME,
+ lang_hooks.name, pkgversion_string, version_string, TARGET_NAME,
indent, __VERSION__);
/* We need to stringify the GMP macro values. Ugh, gmp_version has
if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version))
fprintf (file,
file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
"GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version);
if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ()))
fprintf (file,
file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
"MPFR", MPFR_VERSION_STRING, mpfr_get_version ());
fprintf (file,
file == stderr ? _(fmt4) : fmt4,
return true;
}
+/* A helper function; used as the reallocator function for cpp's line
+ table. */
+static void *
+realloc_for_line_map (void *ptr, size_t len)
+{
+ return ggc_realloc (ptr, len);
+}
+
/* Initialization of the front end environment, before command line
options are parsed. Signal handlers, internationalization etc.
ARGV0 is main's argv[0]. */
table. */
init_ggc ();
init_stringpool ();
- linemap_init (&line_table);
+ line_table = GGC_NEW (struct line_maps);
+ linemap_init (line_table);
+ line_table->reallocator = realloc_for_line_map;
init_ttree ();
/* Initialize register usage now so switches may override. */
/* This must be done after add_params but before argument processing. */
init_ggc_heuristics();
init_optimization_passes ();
+ statistics_early_init ();
}
/* Return true if the current target supports -fsection-anchors. */
return true;
}
+/* Default the align_* variables to 1 if they're still unset, and
+ set up the align_*_log variables. */
+static void
+init_alignments (void)
+{
+ if (align_loops <= 0)
+ align_loops = 1;
+ if (align_loops_max_skip > align_loops)
+ align_loops_max_skip = align_loops - 1;
+ align_loops_log = floor_log2 (align_loops * 2 - 1);
+ if (align_jumps <= 0)
+ align_jumps = 1;
+ if (align_jumps_max_skip > align_jumps)
+ align_jumps_max_skip = align_jumps - 1;
+ align_jumps_log = floor_log2 (align_jumps * 2 - 1);
+ if (align_labels <= 0)
+ align_labels = 1;
+ align_labels_log = floor_log2 (align_labels * 2 - 1);
+ if (align_labels_max_skip > align_labels)
+ align_labels_max_skip = align_labels - 1;
+ if (align_functions <= 0)
+ align_functions = 1;
+ align_functions_log = floor_log2 (align_functions * 2 - 1);
+}
+
/* Process the options that have been parsed. */
static void
process_options (void)
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. */
else
aux_base_name = "gccaux";
- /* Set up the align_*_log variables, defaulting them to 1 if they
- were still unset. */
- if (align_loops <= 0) align_loops = 1;
- if (align_loops_max_skip > align_loops || !align_loops)
- align_loops_max_skip = align_loops - 1;
- align_loops_log = floor_log2 (align_loops * 2 - 1);
- if (align_jumps <= 0) align_jumps = 1;
- if (align_jumps_max_skip > align_jumps || !align_jumps)
- align_jumps_max_skip = align_jumps - 1;
- align_jumps_log = floor_log2 (align_jumps * 2 - 1);
- if (align_labels <= 0) align_labels = 1;
- align_labels_log = floor_log2 (align_labels * 2 - 1);
- if (align_labels_max_skip > align_labels || !align_labels)
- align_labels_max_skip = align_labels - 1;
- if (align_functions <= 0) align_functions = 1;
- align_functions_log = floor_log2 (align_functions * 2 - 1);
-
/* Unrolling all loops implies that standard loop unrolling must also
be done. */
if (flag_unroll_all_loops)
if (flag_asynchronous_unwind_tables)
flag_unwind_tables = 1;
- /* Disable unit-at-a-time mode for frontends not supporting callgraph
- interface. */
- if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function)
- flag_unit_at_a_time = 0;
-
if (!flag_unit_at_a_time)
flag_section_anchors = 0;
if (flag_var_tracking == AUTODETECT_VALUE)
flag_var_tracking = optimize >= 1;
+ if (flag_tree_cselim == AUTODETECT_VALUE)
+#ifdef HAVE_conditional_move
+ flag_tree_cselim = 1;
+#else
+ flag_tree_cselim = 0;
+#endif
+
/* If the user specifically requested variable tracking with tagging
uninitialized variables, we need to turn on variable tracking.
(We already determined above that variable tracking is feasible.) */
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;
+ /* We cannot reassociate if we want traps or signed zeros. */
+ if (flag_associative_math && (flag_trapping_math || flag_signed_zeros))
+ {
+ warning (0, "-fassociative-math disabled; other options take precedence");
+ flag_associative_math = 0;
+ }
+
/* With -fcx-limited-range, we do cheap and quick complex arithmetic. */
if (flag_cx_limited_range)
flag_complex_method = 0;
+ /* With -fcx-fortran-rules, we do something in-between cheap and C99. */
+ if (flag_cx_fortran_rules)
+ flag_complex_method = 1;
+
/* Targets must be able to place spill slots at lower addresses. If the
target already uses a soft frame pointer, the transition is trivial. */
if (!FRAME_GROWS_DOWNWARD && flag_stack_protect)
if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS
&& flag_omit_frame_pointer)
{
- warning (0, "unwind tables currently requires a frame pointer "
+ warning (0, "unwind tables currently require a frame pointer "
"for correctness");
flag_omit_frame_pointer = 0;
}
}
-/* Initialize the compiler back end. */
+/* This function can be called multiple times to reinitialize the compiler
+ back end when register classes or instruction sets have changed,
+ before each function. */
+static void
+backend_init_target (void)
+{
+ /* Initialize alignment variables. */
+ init_alignments ();
+
+ /* This reinitializes hard_frame_pointer, and calls init_reg_modes_target()
+ to initialize reg_raw_mode[]. */
+ init_emit_regs ();
+
+ /* This invokes target hooks to set fixed_reg[] etc, which is
+ mode-dependent. */
+ init_regs ();
+
+ /* This depends on stack_pointer_rtx. */
+ init_fake_stack_mems ();
+
+ /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is
+ mode-dependent. */
+ init_alias_target ();
+
+ /* Depends on HARD_FRAME_POINTER_REGNUM. */
+ init_reload ();
+
+ /* The following initialization functions need to generate rtl, so
+ provide a dummy function context for them. */
+ init_dummy_function_start ();
+
+ /* rtx_cost is mode-dependent, so cached values need to be recomputed
+ on a mode change. */
+ init_expmed ();
+
+ /* We may need to recompute regno_save_code[] and regno_restore_code[]
+ after a mode change as well. */
+ if (flag_caller_saves)
+ init_caller_save ();
+ expand_dummy_function_end ();
+}
+
+/* Initialize the compiler back end. This function is called only once,
+ when starting the compiler. */
static void
backend_init (void)
{
|| flag_test_coverage);
init_rtlanal ();
- init_regs ();
- init_fake_stack_mems ();
- init_alias_once ();
init_inline_once ();
- init_reload ();
init_varasm_once ();
+ save_register_info ();
+
+ /* Initialize the target-specific back end pieces. */
+ backend_init_target ();
+}
+
+/* Initialize things that are both lang-dependent and target-dependent.
+ This function can be called more than once if target parameters change. */
+static void
+lang_dependent_init_target (void)
+{
+ /* This creates various _DECL nodes, so needs to be called after the
+ front end is initialized. It also depends on the HAVE_xxx macros
+ generated from the target machine description. */
+ init_optabs ();
/* The following initialization functions need to generate rtl, so
provide a dummy function context for them. */
init_dummy_function_start ();
- init_expmed ();
- if (flag_caller_saves)
- init_caller_save ();
+
+ /* Do the target-specific parts of expr initialization. */
+ init_expr_target ();
+
+ /* Although the actions of init_set_costs are language-independent,
+ it uses optabs, so we cannot call it from backend_init. */
+ init_set_costs ();
+
expand_dummy_function_end ();
}
dump_base_name = name && name[0] ? name : "gccdump";
/* Other front-end initialization. */
-#ifdef USE_MAPPED_LOCATION
input_location = BUILTINS_LOCATION;
-#else
- input_filename = "<built-in>";
- input_line = 0;
-#endif
if (lang_hooks.init () == 0)
return 0;
input_location = save_loc;
init_asm_output (name);
- /* These create various _DECL nodes, so need to be called after the
+ /* This creates various _DECL nodes, so needs to be called after the
front end is initialized. */
init_eh ();
- init_optabs ();
- /* The following initialization functions need to generate rtl, so
- provide a dummy function context for them. */
- init_dummy_function_start ();
- init_expr_once ();
-
- /* Although the actions of init_set_costs are language-independent,
- it uses optabs, so we cannot call it from backend_init. */
- init_set_costs ();
-
- expand_dummy_function_end ();
+ /* Do the target-specific parts of the initialization. */
+ lang_dependent_init_target ();
/* If dbx symbol table desired, initialize writing it and output the
predefined types. */
return 1;
}
+
+/* Reinitialize everything when target parameters, such as register usage,
+ have changed. */
+void
+target_reinit (void)
+{
+ /* Reinitialize RTL backend. */
+ backend_init_target ();
+
+ /* Reinitialize lang-dependent parts. */
+ lang_dependent_init_target ();
+}
+
void
dump_memory_report (bool final)
{
fatal_error ("error closing %s: %m", asm_file_name);
}
+ statistics_fini ();
finish_optimization_passes ();
if (mem_report)
if (!exit_after_options)
do_compile ();
+ if (warningcount || errorcount)
+ print_ignored_options ();
+
if (errorcount || sorrycount)
return (FATAL_EXIT_CODE);
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