-/* Top level of GNU C compiler
+/* 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 Free Software Foundation, Inc.
#include "cfglayout.h"
#include "cfgloop.h"
#include "hosthooks.h"
+#include "cgraph.h"
+#include "opts.h"
+#include "coverage.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
#include "xcoffout.h" /* Needed for external data
declarations for e.g. AIX 4.x. */
#endif
-\f
+
/* Carry information from ASM_DECLARE_OBJECT_NAME
to ASM_FINISH_DECLARE_OBJECT. */
extern int size_directive_output;
extern tree last_assemble_variable_decl;
-extern void reg_alloc PARAMS ((void));
-
-static void general_init PARAMS ((char *));
-static void parse_options_and_default_flags PARAMS ((int, char **));
-static void do_compile PARAMS ((int));
-static void process_options PARAMS ((void));
-static void backend_init PARAMS ((void));
-static int lang_dependent_init PARAMS ((const char *));
-static void init_asm_output PARAMS ((const char *));
-static void finalize PARAMS ((void));
-
-static void set_target_switch PARAMS ((const char *));
-
-static void crash_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
-static void setup_core_dumping PARAMS ((void));
-static void compile_file PARAMS ((void));
-static void display_help PARAMS ((void));
-static void display_target_options PARAMS ((void));
-
-static void decode_d_option PARAMS ((const char *));
-static int decode_f_option PARAMS ((const char *));
-static int decode_W_option PARAMS ((const char *));
-static int decode_g_option PARAMS ((const char *));
-static unsigned int independent_decode_option PARAMS ((int, char **));
-
-static void print_version PARAMS ((FILE *, const char *));
-static int print_single_switch PARAMS ((FILE *, int, int, const char *,
- const char *, const char *,
- const char *, const char *));
-static void print_switch_values PARAMS ((FILE *, int, int, const char *,
- const char *, const char *));
+extern void reg_alloc (void);
+
+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 *);
+
+/* Rest of compilation helper functions. */
+static bool rest_of_handle_inlining (tree);
+static rtx rest_of_handle_ssa (tree, rtx);
+static void rest_of_handle_cse (tree, rtx);
+static void rest_of_handle_cse2 (tree, rtx);
+static void rest_of_handle_gcse (tree, rtx);
+static void rest_of_handle_life (tree, rtx);
+static void rest_of_handle_loop_optimize (tree, rtx);
+static void rest_of_handle_loop2 (tree, rtx);
+static void rest_of_handle_jump_bypass (tree, rtx);
+static void rest_of_handle_sibling_calls (rtx);
+static void rest_of_handle_null_pointer (tree, rtx);
+static void rest_of_handle_addresof (tree, rtx);
+static void rest_of_handle_cfg (tree, rtx);
+static void rest_of_handle_branch_prob (tree, rtx);
+static void rest_of_handle_if_conversion (tree, rtx);
+static void rest_of_handle_if_after_combine (tree, rtx);
+static void rest_of_handle_tracer (tree, rtx);
+static void rest_of_handle_combine (tree, rtx);
+static void rest_of_handle_regmove (tree, rtx);
+#ifdef INSN_SCHEDULING
+static void rest_of_handle_sched (tree, rtx);
+static void rest_of_handle_sched2 (tree, rtx);
+#endif
+static bool rest_of_handle_new_regalloc (tree, rtx, int *);
+static bool rest_of_handle_old_regalloc (tree, rtx, int *);
+static void rest_of_handle_regrename (tree, rtx);
+static void rest_of_handle_reorder_blocks (tree, rtx);
+#ifdef STACK_REGS
+static void rest_of_handle_stack_regs (tree, rtx);
+#endif
+static void rest_of_handle_machine_reorg (tree, rtx);
+#ifdef DELAY_SLOTS
+static void rest_of_handle_delay_slots (tree, rtx);
+#endif
+static void rest_of_handle_final (tree, rtx);
/* 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
const char *progname;
-/* Copy of arguments to toplev_main. */
-int save_argc;
-char **save_argv;
-\f
-/* Name of current original source file (what was input to cpp).
- This comes from each #-command in the actual input. */
-
-const char *input_filename;
+/* 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.
const char *main_input_filename;
-/* Current line number in real source file. */
+/* Current position in real source file. */
-int lineno;
+location_t input_location;
/* Nonzero if it is unsafe to create any new pseudo registers. */
int no_new_pseudos;
/* Name to use as a base for auxiliary output files. */
-static const char *aux_base_name;
+const char *aux_base_name;
/* Format to use to print dumpfile index value */
#ifndef DUMPFILE_FORMAT
DFI_flow2,
DFI_peephole2,
DFI_rnreg,
- DFI_ce3,
DFI_bbro,
+ DFI_ce3,
+ DFI_branch_target_load,
DFI_sched2,
DFI_stack,
DFI_mach,
Remaining -d letters:
- " o q "
- " H JK OPQ TUV YZ"
+ " m q "
+ " JK O Q UV YZ"
*/
static struct dump_file_info dump_file[DFI_MAX] =
{ "flow2", 'w', 1, 0, 0 },
{ "peephole2", 'z', 1, 0, 0 },
{ "rnreg", 'n', 1, 0, 0 },
- { "ce3", 'E', 1, 0, 0 },
{ "bbro", 'B', 1, 0, 0 },
+ { "ce3", 'E', 1, 0, 0 },
+ { "btl", 'd', 1, 0, 0 }, /* Yes, duplicate enable switch. */
{ "sched2", 'R', 1, 0, 0 },
{ "stack", 'k', 1, 0, 0 },
{ "mach", 'M', 1, 0, 0 },
{ "dbr", 'd', 0, 0, 0 },
};
-static int open_dump_file PARAMS ((enum dump_file_index, tree));
-static void close_dump_file PARAMS ((enum dump_file_index,
- void (*) (FILE *, rtx), rtx));
+static int open_dump_file (enum dump_file_index, tree);
+static void close_dump_file (enum dump_file_index,
+ void (*) (FILE *, rtx), rtx);
/* Other flags saying which kinds of debugging dump have been requested. */
int rtl_dump_and_exit;
int flag_print_asm_name;
-static int version_flag;
-static const char *filename;
enum graph_dump_types graph_dump_format;
/* Name for output file of assembly code, specified with -o. */
-char *asm_file_name;
-
-/* Value of the -G xx switch, and whether it was passed or not. */
-int g_switch_value;
-int g_switch_set;
+const char *asm_file_name;
/* Type(s) of debugging information we are producing (if any).
See flags.h for the definitions of the different possible
int optimize_size = 0;
-/* Nonzero if we should exit after parsing options. */
-static int exit_after_options = 0;
-
/* The FUNCTION_DECL for the function currently being compiled,
or 0 if between functions. */
tree current_function_decl;
int flag_eliminate_unused_debug_types = 1;
+/* Nonzero means emit debugging information only for symbols which are used. */
+int flag_debug_only_used_symbols = 0;
+
/* Nonzero if generating code to do profiling. */
int profile_flag = 0;
int profile_arc_flag = 0;
+/* Nonzero if value histograms should be measured. */
+
+int flag_profile_values = 0;
+
/* Nonzero if generating info for gcov to calculate line test coverage. */
int flag_test_coverage = 0;
and to print them when we are done. */
int flag_detailed_statistics = 0;
-\f
/* -f flags. */
/* Nonzero means `char' should be signed. */
int flag_trapping_math = 1;
/* Nonzero means disable transformations observable by signaling NaNs.
- This option implies that any operation on a IEEE signaling NaN can
+ This option implies that any operation on an IEEE signaling NaN can
generate a (user-visible) trap. */
int flag_signaling_nans = 0;
/* Nonzero means perform loop optimizer. */
-static int flag_loop_optimize;
+int flag_loop_optimize;
/* Nonzero means perform crossjumping. */
-static int flag_crossjumping;
+int flag_crossjumping;
/* Nonzero means perform if conversion. */
-static int flag_if_conversion;
+int flag_if_conversion;
/* Nonzero means perform if conversion after reload. */
-static int flag_if_conversion2;
+int flag_if_conversion2;
/* Nonzero means to use global dataflow analysis to eliminate
useless null pointer tests. */
-static int flag_delete_null_pointer_checks;
+int flag_delete_null_pointer_checks;
/* Nonzero means perform global CSE. */
int flag_gcse_sm = 1;
+/* Perform target register optimization before prologue / epilogue
+ threading. */
+
+int flag_branch_target_load_optimize = 0;
+
+/* Perform target register optimization after prologue / epilogue
+ threading and jump2. */
+
+int flag_branch_target_load_optimize2 = 0;
+
/* Nonzero means to rerun cse after loop optimization. This increases
compilation time about 20% and picks up a few more common expressions. */
-static int flag_rerun_cse_after_loop;
+int flag_rerun_cse_after_loop;
/* Nonzero means to run loop optimizations twice. */
/* Specified name of aux-info file. */
-static char *aux_info_file_name;
+const char *aux_info_file_name;
/* Nonzero means make the text shared if supported. */
int flag_pic;
+/* Nonzero if we are compiling position independent code for executable.
+ The value is 1 if we are doing "small" pic; value is 2 if we're doing
+ "large" pic. */
+
+int flag_pie;
+
+/* Nonzero if we are compiling code for a shared library, zero for
+ executable. */
+
+int flag_shlib;
+
/* Set to the default thread-local storage (tls) model to use. */
enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
int flag_unwind_tables = 0;
-/* Nonzero means generate frame unwind info table exact at each insn boundary */
+/* Nonzero means generate frame unwind info table exact at each insn
+ boundary. */
int flag_asynchronous_unwind_tables = 0;
}
lang_independent_options;
+/* Nonzero if signed arithmetic overflow should trap. */
int flag_trapv = 0;
+/* Nonzero if signed arithmetic overflow should wrap around. */
+int flag_wrapv = 0;
+
/* Add or remove a leading underscore from user symbols. */
int flag_leading_underscore = -1;
{
{"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1,
N_("Perform DWARF2 duplicate elimination") },
+ {"eliminate-unused-debug-symbols", &flag_debug_only_used_symbols, 1,
+ N_("Perform unused type elimination in debug info") },
{"eliminate-unused-debug-types", &flag_eliminate_unused_debug_types, 1,
N_("Perform unused type elimination in debug info") },
{"float-store", &flag_float_store, 1,
N_("Perform enhanced load motion during global subexpression elimination") },
{"gcse-sm", &flag_gcse_sm, 1,
N_("Perform store motion after global subexpression elimination") },
+ {"branch-target-load-optimize", &flag_branch_target_load_optimize, 1,
+ N_("Perform branch target load optimization before prologue / epilogue threading") },
+ {"branch-target-load-optimize2", &flag_branch_target_load_optimize2, 1,
+ N_("Perform branch target load optimization after prologue / epilogue threading") },
{"loop-optimize", &flag_loop_optimize, 1,
N_("Perform the loop optimizations") },
{"crossjumping", &flag_crossjumping, 1,
{"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1,
N_("Allow speculative motion of more loads") },
{"sched2-use-superblocks", &flag_sched2_use_superblocks, 1,
- N_("If scheduling post reload, do superblock sheduling") },
+ N_("If scheduling post reload, do superblock scheduling") },
{"sched2-use-traces", &flag_sched2_use_traces, 1,
- N_("If scheduling post reload, do trace sheduling") },
+ N_("If scheduling post reload, do trace scheduling") },
{"branch-count-reg",&flag_branch_on_count_reg, 1,
N_("Replace add,compare,branch with branch on count reg") },
{"pic", &flag_pic, 1,
N_("Generate position independent code, if possible") },
{"PIC", &flag_pic, 2, ""},
+ {"pie", &flag_pie, 1,
+ N_("Generate position independent code for executables, if possible") },
+ {"PIE", &flag_pie, 2, ""},
{"exceptions", &flag_exceptions, 1,
N_("Enable exception handling") },
{"unwind-tables", &flag_unwind_tables, 1,
{"data-sections", &flag_data_sections, 1,
N_("place data items into their own section") },
{"verbose-asm", &flag_verbose_asm, 1,
- N_("Add extra commentry to assembler output") },
+ N_("Add extra commentary to assembler output") },
{"gnu-linker", &flag_gnu_linker, 1,
N_("Output GNU ld formatted global initializers") },
{"regmove", &flag_regmove, 1,
{"align-functions", &align_functions, 0,
N_("Align the start of functions") },
{"merge-constants", &flag_merge_constants, 1,
- N_("Attempt to merge identical constants accross compilation units") },
+ N_("Attempt to merge identical constants across compilation units") },
{"merge-all-constants", &flag_merge_constants, 2,
N_("Attempt to merge identical constants and constant variables") },
{"dump-unnumbered", &flag_dump_unnumbered, 1,
N_("Report on permanent memory allocation at end of run") },
{ "trapv", &flag_trapv, 1,
N_("Trap for signed overflow in addition / subtraction / multiplication") },
+ { "wrapv", &flag_wrapv, 1,
+ N_("Assume signed arithmetic overflow wraps around") },
{ "new-ra", &flag_new_regalloc, 1,
N_("Use graph coloring register allocation.") },
};
#define DEFINE_LANG_NAME(NAME) { NULL, NAME },
-#include "options.h"
+#include "options_.h"
};
const char *const prefix;
const char **const variable;
const char *const description;
+ const char *const value;
}
target_options[] = TARGET_OPTIONS;
#endif
-\f
-/* Options controlling warnings. */
-
-/* Don't print warning messages. -w. */
-
-int inhibit_warnings = 0;
-/* Don't suppress warnings from system headers. -Wsystem-headers. */
-
-int warn_system_headers = 0;
-
-/* Print various extra warnings. -W/-Wextra. */
-
-int extra_warnings = 0;
-
-/* Treat warnings as errors. -Werror. */
-
-int warnings_are_errors = 0;
-
-/* Nonzero to warn about unused variables, functions et.al. */
-
-int warn_unused_function;
-int warn_unused_label;
-int warn_unused_parameter;
-int warn_unused_variable;
-int warn_unused_value;
-
-/* Nonzero to warn about code which is never reached. */
-
-int warn_notreached;
-
-/* Nonzero to warn about variables used before they are initialized. */
-
-int warn_uninitialized;
-
-/* Nonzero means warn about all declarations which shadow others. */
-
-int warn_shadow;
-
-/* Warn if a switch on an enum, that does not have a default case,
- fails to have a case for every enum value. */
-
-int warn_switch;
-
-/* Warn if a switch does not have a default case. */
-
-int warn_switch_default;
-
-/* Warn if a switch on an enum fails to have a case for every enum
- value (regardless of the presence or otherwise of a default case). */
-
-int warn_switch_enum;
+/* Options controlling warnings. */
/* Nonzero means warn about function definitions that default the return type
or that use a null return and have a return-type other than void. */
int warn_return_type;
-/* Nonzero means warn about pointer casts that increase the required
- alignment of the target type (and might therefore lead to a crash
- due to a misaligned access). */
-
-int warn_cast_align;
-
-/* Nonzero means warn about any objects definitions whose size is larger
- than N bytes. Also want about function definitions whose returned
- values are larger than N bytes. The value N is in `larger_than_size'. */
-
-int warn_larger_than;
-HOST_WIDE_INT larger_than_size;
-
-/* Nonzero means warn if inline function is too large. */
-
-int warn_inline;
-
-/* Warn if a function returns an aggregate,
- since there are often incompatible calling conventions for doing this. */
-
-int warn_aggregate_return;
-
-/* Warn if packed attribute on struct is unnecessary and inefficient. */
-
-int warn_packed;
-
-/* Warn when gcc pads a structure to an alignment boundary. */
-
-int warn_padded;
-
-/* Warn when an optimization pass is disabled. */
-
-int warn_disabled_optimization;
-
-/* Warn about functions which might be candidates for attribute noreturn. */
-
-int warn_missing_noreturn;
-
-/* Nonzero means warn about uses of __attribute__((deprecated))
- declarations. */
-
-int warn_deprecated_decl = 1;
-
-/* Nonzero means warn about constructs which might not be
- strict-aliasing safe. */
-
-int warn_strict_aliasing;
+/* Used for the -W options array temporarily. */
+static int warn_dummy;
/* Like f_options, but for -W. */
static const lang_independent_options W_options[] =
{
- {"unused-function", &warn_unused_function, 1,
+ {"unused-function", &warn_dummy, 1,
N_("Warn when a function is unused") },
- {"unused-label", &warn_unused_label, 1,
+ {"unused-label", &warn_dummy, 1,
N_("Warn when a label is unused") },
- {"unused-parameter", &warn_unused_parameter, 1,
+ {"unused-parameter", &warn_dummy, 1,
N_("Warn when a function parameter is unused") },
- {"unused-variable", &warn_unused_variable, 1,
+ {"unused-variable", &warn_dummy, 1,
N_("Warn when a variable is unused") },
- {"unused-value", &warn_unused_value, 1,
+ {"unused-value", &warn_dummy, 1,
N_("Warn when an expression value is unused") },
- {"system-headers", &warn_system_headers, 1,
+ {"system-headers", &warn_dummy, 1,
N_("Do not suppress warnings from system headers") },
- {"error", &warnings_are_errors, 1,
+ {"error", &warn_dummy, 1,
N_("Treat all warnings as errors") },
- {"shadow", &warn_shadow, 1,
+ {"shadow", &warn_dummy, 1,
N_("Warn when one local variable shadows another") },
- {"switch", &warn_switch, 1,
+ {"switch", &warn_dummy, 1,
N_("Warn about enumerated switches, with no default, missing a case") },
- {"switch-default", &warn_switch_default, 1,
+ {"switch-default", &warn_dummy, 1,
N_("Warn about enumerated switches missing a default case") },
- {"switch-enum", &warn_switch_enum, 1,
+ {"switch-enum", &warn_dummy, 1,
N_("Warn about all enumerated switches missing a specific case") },
- {"aggregate-return", &warn_aggregate_return, 1,
+ {"aggregate-return", &warn_dummy, 1,
N_("Warn about returning structures, unions or arrays") },
- {"cast-align", &warn_cast_align, 1,
+ {"cast-align", &warn_dummy, 1,
N_("Warn about pointer casts which increase alignment") },
- {"unreachable-code", &warn_notreached, 1,
+ {"unreachable-code", &warn_dummy, 1,
N_("Warn about code that will never be executed") },
- {"uninitialized", &warn_uninitialized, 1,
+ {"uninitialized", &warn_dummy, 1,
N_("Warn about uninitialized automatic variables") },
- {"inline", &warn_inline, 1,
+ {"inline", &warn_dummy, 1,
N_("Warn when an inlined function cannot be inlined") },
- {"packed", &warn_packed, 1,
+ {"packed", &warn_dummy, 1,
N_("Warn when the packed attribute has no effect on struct layout") },
- {"padded", &warn_padded, 1,
+ {"padded", &warn_dummy, 1,
N_("Warn when padding is required to align struct members") },
- {"disabled-optimization", &warn_disabled_optimization, 1,
+ {"disabled-optimization", &warn_dummy, 1,
N_("Warn when an optimization pass is disabled") },
- {"deprecated-declarations", &warn_deprecated_decl, 1,
+ {"deprecated-declarations", &warn_dummy, 1,
N_("Warn about uses of __attribute__((deprecated)) declarations") },
- {"extra", &extra_warnings, 1,
- N_("Print extra (possibly unwanted) warnings") },
- {"missing-noreturn", &warn_missing_noreturn, 1,
+ {"missing-noreturn", &warn_dummy, 1,
N_("Warn about functions which might be candidates for attribute noreturn") },
- {"strict-aliasing", &warn_strict_aliasing, 1,
+ {"strict-aliasing", &warn_dummy, 1,
N_ ("Warn about code which might break the strict aliasing rules") }
};
-void
-set_Wunused (setting)
- int setting;
-{
- warn_unused_function = setting;
- warn_unused_label = setting;
- /* Unused function parameter warnings are reported when either ``-W
- -Wunused'' or ``-Wunused-parameter'' is specified. Differentiate
- -Wunused by setting WARN_UNUSED_PARAMETER to -1. */
- if (!setting)
- warn_unused_parameter = 0;
- else if (!warn_unused_parameter)
- warn_unused_parameter = -1;
- warn_unused_variable = setting;
- warn_unused_value = setting;
-}
-
-/* The following routines are useful in setting all the flags that
- -ffast-math and -fno-fast-math imply. */
-
-void
-set_fast_math_flags (set)
- int set;
-{
- flag_trapping_math = !set;
- flag_unsafe_math_optimizations = set;
- flag_finite_math_only = set;
- flag_errno_math = !set;
- if (set)
- flag_signaling_nans = 0;
-}
-
-/* Return true iff flags are set as if -ffast-math. */
-bool
-fast_math_flags_set_p ()
-{
- return (!flag_trapping_math
- && flag_unsafe_math_optimizations
- && flag_finite_math_only
- && !flag_errno_math);
-}
-
-\f
/* Output files for assembler code (real compiler output)
and debugging dumps. */
If PNAME is zero just return DEFVAL, do not call error. */
int
-read_integral_parameter (p, pname, defval)
- const char *p;
- const char *pname;
- const int defval;
+read_integral_parameter (const char *p, const char *pname, const int defval)
{
const char *endp = p;
if (*endp != 0)
{
if (pname != 0)
- error ("invalid option `%s'", pname);
+ error ("invalid option argument `%s'", pname);
return defval;
}
return atoi (p);
}
-\f
-/* This calls abort and is used to avoid problems when abort is a macro.
- It is used when we need to pass the address of abort. */
-
-void
-do_abort ()
-{
- abort ();
-}
-
-/* When `malloc.c' is compiled with `rcheck' defined,
- it calls this function to report clobberage. */
-void
-botch (s)
- const char *s ATTRIBUTE_UNUSED;
-{
- abort ();
-}
-\f
/* Return the logarithm of X, base 2, considering X unsigned,
if X is a power of 2. Otherwise, returns -1.
This should be used via the `exact_log2' macro. */
int
-exact_log2_wide (x)
- unsigned HOST_WIDE_INT x;
+exact_log2_wide (unsigned HOST_WIDE_INT x)
{
int log = 0;
/* Test for 0 or a power of 2. */
This should be used via the floor_log2 macro. */
int
-floor_log2_wide (x)
- unsigned HOST_WIDE_INT x;
+floor_log2_wide (unsigned HOST_WIDE_INT x)
{
int log = -1;
while (x != 0)
}
/* Handler for fatal signals, such as SIGSEGV. These are transformed
- into ICE messages, which is much more user friendly. */
+ 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 (signo)
- int signo;
+crash_signal (int signo)
{
+ signal (signo, SIG_DFL);
internal_error ("%s", strsignal (signo));
}
printed first, except in the case of abort().) */
static void
-setup_core_dumping ()
+setup_core_dumping (void)
{
#ifdef SIGABRT
signal (SIGABRT, SIG_DFL);
{
struct rlimit rlim;
if (getrlimit (RLIMIT_CORE, &rlim) != 0)
- fatal_io_error ("getting core file size maximum limit");
+ fatal_error ("getting core file size maximum limit: %m");
rlim.rlim_cur = rlim.rlim_max;
if (setrlimit (RLIMIT_CORE, &rlim) != 0)
- fatal_io_error ("setting core file size limit to maximum");
+ fatal_error ("setting core file size limit to maximum: %m");
}
#endif
diagnostic_abort_on_error (global_dc);
up to five characters. (Java uses ".class".) */
void
-strip_off_ending (name, len)
- char *name;
- int len;
+strip_off_ending (char *name, int len)
{
int i;
for (i = 2; i < 6 && len > i; i++)
/* Output a quoted string. */
void
-output_quoted_string (asm_file, string)
- FILE *asm_file;
- const char *string;
+output_quoted_string (FILE *asm_file, const char *string)
{
#ifdef OUTPUT_QUOTED_STRING
OUTPUT_QUOTED_STRING (asm_file, string);
#endif
}
-/* Output NAME into FILE after having turned it into something
- usable as an identifier in a target's assembly file. */
-void
-output_clean_symbol_name (file, name)
- FILE *file;
- const char *name;
-{
- /* Make a copy of NAME. */
- char *id = xstrdup (name);
-
- /* Make it look like a valid identifier for an assembler. */
- clean_symbol_name (id);
-
- fputs (id, file);
- free (id);
-}
-
-
/* Output a file name in the form wanted by System V. */
void
-output_file_directive (asm_file, input_name)
- FILE *asm_file;
- const char *input_name;
+output_file_directive (FILE *asm_file, const char *input_name)
{
int len = strlen (input_name);
const char *na = input_name + len;
#endif
#endif
}
-\f
+
/* Routine to open a dump file. Return true if the dump file is enabled. */
static int
-open_dump_file (index, decl)
- enum dump_file_index index;
- tree decl;
+open_dump_file (enum dump_file_index index, tree decl)
{
char *dump_name;
const char *open_arg;
rtl_dump_file = fopen (dump_name, open_arg);
if (rtl_dump_file == NULL)
- fatal_io_error ("can't open %s", dump_name);
+ fatal_error ("can't open %s: %m", dump_name);
free (dump_name);
/* Routine to close a dump file. */
static void
-close_dump_file (index, func, insns)
- enum dump_file_index index;
- void (*func) PARAMS ((FILE *, rtx));
- rtx insns;
+close_dump_file (enum dump_file_index index,
+ void (*func) (FILE *, rtx),
+ rtx insns)
{
if (! rtl_dump_file)
return;
Returns nonzero if anything was put out. */
int
-wrapup_global_declarations (vec, len)
- tree *vec;
- int len;
+wrapup_global_declarations (tree *vec, int len)
{
tree decl;
int i;
decl = vec[i];
/* We're not deferring this any longer. Assignment is
- conditional to avoid needlessly dirtying PCH pages. */
+ conditional to avoid needlessly dirtying PCH pages. */
if (DECL_DEFER_OUTPUT (decl) != 0)
DECL_DEFER_OUTPUT (decl) = 0;
{
bool needed = 1;
- if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
+ if (flag_unit_at_a_time
+ && cgraph_varpool_node (decl)->finalized)
+ needed = 0;
+ else if (flag_unit_at_a_time
+ && (TREE_USED (decl)
+ || TREE_USED (DECL_ASSEMBLER_NAME (decl))))
+ /* needed */;
+ else if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
/* needed */;
else if (DECL_COMDAT (decl))
needed = 0;
which there are LEN). Output debugging information for them. */
void
-check_global_declarations (vec, len)
- tree *vec;
- int len;
+check_global_declarations (tree *vec, int len)
{
tree decl;
int i;
&& ! 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. */
}
}
-/* Save the current INPUT_FILENAME and LINENO on the top entry in the
+/* 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_FILENAME and LINENO accordingly. */
+ INPUT_LOCATION accordingly. */
void
-push_srcloc (file, line)
- const char *file;
- int line;
+push_srcloc (const char *file, int line)
{
struct file_stack *fs;
- if (input_file_stack)
- {
- input_file_stack->name = input_filename;
- input_file_stack->line = lineno;
- }
-
fs = (struct file_stack *) xmalloc (sizeof (struct file_stack));
- fs->name = input_filename = file;
- fs->line = lineno = line;
+ fs->location = input_location;
fs->next = input_file_stack;
+ input_filename = file;
+ input_line = line;
input_file_stack = fs;
input_file_stack_tick++;
}
/* Pop the top entry off the stack of presently open source files.
- Restore the INPUT_FILENAME and LINENO from the new topmost entry on
- the stack. */
+ Restore the INPUT_LOCATION from the new topmost entry on the
+ stack. */
void
-pop_srcloc ()
+pop_srcloc (void)
{
struct file_stack *fs;
fs = input_file_stack;
+ input_location = fs->location;
input_file_stack = fs->next;
free (fs);
input_file_stack_tick++;
- /* The initial source file is never popped. */
- if (!input_file_stack)
- abort ();
- input_filename = input_file_stack->name;
- lineno = input_file_stack->line;
}
/* Compile an entire translation unit. Write a file of assembly
output and various debugging dumps. */
static void
-compile_file ()
+compile_file (void)
{
/* Initialize yet another pass. */
init_final (main_input_filename);
- init_branch_prob (aux_base_name);
+ coverage_init (aux_base_name);
timevar_push (TV_PARSE);
(*lang_hooks.decls.final_write_globals)();
- if (profile_arc_flag)
- /* This must occur after the loop to output deferred functions.
- Else the profiler initializer would not be emitted if all the
- functions in this compilation unit were deferred. */
- create_profiler ();
+ cgraph_varpool_assemble_pending_decls ();
+
+ /* 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 ();
/* Write out any pending weak symbol declarations. */
timevar_pop (TV_DUMP);
}
-#ifdef ASM_FILE_END
- ASM_FILE_END (asm_out_file);
-#endif
+ targetm.asm_out.file_end ();
/* 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
timevar_pop (TV_DUMP);
}
}
-\f
+
/* This is called from various places for FUNCTION_DECL, VAR_DECL,
and TYPE_DECL nodes.
if this declaration is not within a function. */
void
-rest_of_decl_compilation (decl, asmspec, top_level, at_end)
- tree decl;
- const char *asmspec;
- int top_level;
- int at_end;
+rest_of_decl_compilation (tree decl,
+ const char *asmspec,
+ int top_level,
+ int at_end)
{
/* We deferred calling assemble_alias so that we could collect
other attributes such as visibility. Emit the alias now. */
/* Don't output anything when a tentative file-scope definition
is seen. But at end of compilation, do output code for them. */
if (at_end || !DECL_DEFER_OUTPUT (decl))
- assemble_variable (decl, top_level, at_end, 0);
+ {
+ if (flag_unit_at_a_time && !cgraph_global_info_ready
+ && TREE_CODE (decl) != FUNCTION_DECL && top_level)
+ cgraph_varpool_finalize_decl (decl);
+ else
+ assemble_variable (decl, top_level, at_end, 0);
+ }
#ifdef ASM_FINISH_DECLARE_OBJECT
if (decl == last_assemble_variable_decl)
/* Called after finishing a record, union or enumeral type. */
void
-rest_of_type_compilation (type, toplev)
+rest_of_type_compilation (
#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) \
|| defined (SDB_DEBUGGING_INFO) || defined (DWARF2_DEBUGGING_INFO)
- tree type;
- int toplev;
+ tree type,
+ int toplev
#else
- tree type ATTRIBUTE_UNUSED;
- int toplev ATTRIBUTE_UNUSED;
+ tree type ATTRIBUTE_UNUSED,
+ int toplev ATTRIBUTE_UNUSED
#endif
+ )
{
/* Avoid confusing the debug information machinery when there are
errors. */
timevar_pop (TV_SYMOUT);
}
-/* This is called from finish_function (within langhooks.parse_file)
- after each top-level definition is parsed.
- It is supposed to compile that function or variable
- and output the assembler code for it.
- After we return, the tree storage is freed. */
-
-void
-rest_of_compilation (decl)
- tree decl;
+/* Turn the RTL into assembly. */
+static void
+rest_of_handle_final (tree decl, rtx insns)
{
- rtx insns;
- int tem;
- int failure = 0;
- int rebuild_label_notes_after_reload;
+ timevar_push (TV_FINAL);
+ {
+ rtx x;
+ const char *fnname;
- timevar_push (TV_REST_OF_COMPILATION);
+ /* Get the function's name, as described by its RTL. This may be
+ different from the DECL_NAME name used in the source file. */
- /* Now that we're out of the frontend, we shouldn't have any more
- CONCATs anywhere. */
- generating_concat_p = 0;
+ x = DECL_RTL (decl);
+ if (GET_CODE (x) != MEM)
+ abort ();
+ x = XEXP (x, 0);
+ if (GET_CODE (x) != SYMBOL_REF)
+ abort ();
+ fnname = XSTR (x, 0);
- /* When processing delayed functions, prepare_function_start() won't
- have been run to re-initialize it. */
- cse_not_expected = ! optimize;
+ assemble_start_function (decl, fnname);
+ final_start_function (insns, asm_out_file, optimize);
+ final (insns, asm_out_file, optimize, 0);
+ final_end_function ();
- /* First, make sure that NOTE_BLOCK is set correctly for each
- NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */
- if (!cfun->x_whole_function_mode_p)
- identify_blocks ();
+#ifdef IA64_UNWIND_INFO
+ /* ??? The IA-64 ".handlerdata" directive must be issued before
+ the ".endp" directive that closes the procedure descriptor. */
+ output_function_exception_table ();
+#endif
- /* In function-at-a-time mode, we do not attempt to keep the BLOCK
- tree in sensible shape. So, we just recalculate it here. */
- if (cfun->x_whole_function_mode_p)
- reorder_blocks ();
+ assemble_end_function (decl, fnname);
- init_flow ();
+#ifndef IA64_UNWIND_INFO
+ /* Otherwise, it feels unclean to switch sections in the middle. */
+ output_function_exception_table ();
+#endif
- /* If we are reconsidering an inline function
- at the end of compilation, skip the stuff for making it inline. */
+ if (! quiet_flag)
+ fflush (asm_out_file);
- if (DECL_SAVED_INSNS (decl) == 0)
- {
- int inlinable = 0;
- tree parent;
- const char *lose;
-
- /* If this is nested inside an inlined external function, pretend
- it was only declared. Since we cannot inline such functions,
- generating code for this one is not only not necessary but will
- confuse some debugging output writers. */
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL
- && DECL_INLINE (parent) && DECL_EXTERNAL (parent))
- {
- DECL_INITIAL (decl) = 0;
- goto exit_rest_of_compilation;
- }
- else if (TYPE_P (parent))
- /* A function in a local class should be treated normally. */
- break;
+ /* Release all memory allocated by flow. */
+ free_basic_block_vars (0);
- /* If requested, consider whether to make this function inline. */
- if ((DECL_INLINE (decl) && !flag_no_inline)
- || flag_inline_functions)
- {
- timevar_push (TV_INTEGRATION);
- lose = function_cannot_inline_p (decl);
- timevar_pop (TV_INTEGRATION);
- if (lose || ! optimize)
- {
- if (warn_inline && DECL_INLINE (decl))
- warning_with_decl (decl, lose);
- DECL_ABSTRACT_ORIGIN (decl) = 0;
- /* Don't really compile an extern inline function.
- If we can't make it inline, pretend
- it was only declared. */
- if (DECL_EXTERNAL (decl))
- {
- DECL_INITIAL (decl) = 0;
- goto exit_rest_of_compilation;
- }
- }
- else
- /* ??? Note that this has the effect of making it look
- like "inline" was specified for a function if we choose
- to inline it. This isn't quite right, but it's
- probably not worth the trouble to fix. */
- inlinable = DECL_INLINE (decl) = 1;
- }
+ /* Release all memory held by regsets now. */
+ regset_release_memory ();
+ }
+ timevar_pop (TV_FINAL);
- insns = get_insns ();
+ ggc_collect ();
+}
- /* Dump the rtl code if we are dumping rtl. */
+#ifdef DELAY_SLOTS
+/* Run delay slot optimization. */
+static void
+rest_of_handle_delay_slots (tree decl, rtx insns)
+{
+ timevar_push (TV_DBR_SCHED);
+ open_dump_file (DFI_dbr, decl);
- if (open_dump_file (DFI_rtl, decl))
- {
- if (DECL_SAVED_INSNS (decl))
- fprintf (rtl_dump_file, ";; (integrable)\n\n");
- close_dump_file (DFI_rtl, print_rtl, insns);
- }
+ dbr_schedule (insns, rtl_dump_file);
- /* Convert from NOTE_INSN_EH_REGION style notes, and do other
- sorts of eh initialization. Delay this until after the
- initial rtl dump so that we can see the original nesting. */
- convert_from_eh_region_ranges ();
-
- /* If function is inline, and we don't yet know whether to
- compile it by itself, defer decision till end of compilation.
- wrapup_global_declarations will (indirectly) call
- rest_of_compilation again for those functions that need to
- be output. Also defer those functions that we are supposed
- to defer. */
-
- if (inlinable
- || (DECL_INLINE (decl)
- && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
- && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))
- && ! flag_keep_inline_functions)
- || DECL_EXTERNAL (decl))))
- DECL_DEFER_OUTPUT (decl) = 1;
-
- if (DECL_INLINE (decl))
- /* DWARF wants separate debugging info for abstract and
- concrete instances of all inline functions, including those
- declared inline but not inlined, and those inlined even
- though they weren't declared inline. Conveniently, that's
- what DECL_INLINE means at this point. */
- (*debug_hooks->deferred_inline_function) (decl);
-
- if (DECL_DEFER_OUTPUT (decl))
- {
- /* If -Wreturn-type, we have to do a bit of compilation. We just
- want to call cleanup the cfg to figure out whether or not we can
- fall off the end of the function; we do the minimum amount of
- work necessary to make that safe. */
- if (warn_return_type)
- {
- int saved_optimize = optimize;
+ close_dump_file (DFI_dbr, print_rtl, insns);
+ timevar_pop (TV_DBR_SCHED);
- optimize = 0;
- rebuild_jump_labels (insns);
- find_exception_handler_labels ();
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP);
- optimize = saved_optimize;
+ ggc_collect ();
+}
+#endif
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- }
+#ifdef STACK_REGS
+/* Convert register usage from flat register file usage to a stack
+ register file. */
+static void
+rest_of_handle_stack_regs (tree decl, rtx insns)
+{
+ timevar_push (TV_REG_STACK);
+ open_dump_file (DFI_stack, decl);
- set_nothrow_function_flags ();
- if (current_function_nothrow)
- /* Now we know that this can't throw; set the flag for the benefit
- of other functions later in this translation unit. */
- TREE_NOTHROW (current_function_decl) = 1;
-
- timevar_push (TV_INTEGRATION);
- save_for_inline (decl);
- timevar_pop (TV_INTEGRATION);
- DECL_SAVED_INSNS (decl)->inlinable = inlinable;
- goto exit_rest_of_compilation;
+ if (reg_to_stack (insns, rtl_dump_file) && optimize)
+ {
+ if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK
+ | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0))
+ && flag_reorder_blocks)
+ {
+ reorder_basic_blocks ();
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
}
-
- /* If specified extern inline but we aren't inlining it, we are
- done. This goes for anything that gets here with DECL_EXTERNAL
- set, not just things with DECL_INLINE. */
- if (DECL_EXTERNAL (decl))
- goto exit_rest_of_compilation;
}
- /* If we're emitting a nested function, make sure its parent gets
- emitted as well. Doing otherwise confuses debug info. */
- {
- tree parent;
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL)
- TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1;
- }
+ close_dump_file (DFI_stack, print_rtl_with_bb, insns);
+ timevar_pop (TV_REG_STACK);
- /* We are now committed to emitting code for this function. Do any
- preparation, such as emitting abstract debug info for the inline
- before it gets mangled by optimization. */
- if (DECL_INLINE (decl))
- (*debug_hooks->outlining_inline_function) (decl);
+ ggc_collect ();
+}
+#endif
- /* Remove any notes we don't need. That will make iterating
- over the instruction sequence faster, and allow the garbage
- collector to reclaim the memory used by the notes. */
- remove_unnecessary_notes ();
- reorder_blocks ();
+
+/* Machine independent reorg pass. */
+static void
+rest_of_handle_machine_reorg (tree decl, rtx insns)
+{
+ timevar_push (TV_MACH_DEP);
+ open_dump_file (DFI_mach, decl);
+
+ (*targetm.machine_dependent_reorg) ();
+
+ close_dump_file (DFI_mach, print_rtl, insns);
+ timevar_pop (TV_MACH_DEP);
ggc_collect ();
+}
- /* Initialize some variables used by the optimizers. */
- init_function_for_compilation ();
- if (! DECL_DEFER_OUTPUT (decl))
- TREE_ASM_WRITTEN (decl) = 1;
+/* Run new register allocator. Return TRUE if we must exit
+ rest_of_compilation upon return. */
+static bool
+rest_of_handle_new_regalloc (tree decl, rtx insns, int *rebuild_notes)
+{
+ int failure;
- /* Now that integrate will no longer see our rtl, we need not
- distinguish between the return value of this function and the
- return value of called functions. Also, we can remove all SETs
- of subregs of hard registers; they are only here because of
- integrate. Also, we can now initialize pseudos intended to
- carry magic hard reg data throughout the function. */
- rtx_equal_function_value_matters = 0;
- purge_hard_subreg_sets (get_insns ());
-
- /* Early return if there were errors. We can run afoul of our
- consistency checks, and there's not really much point in fixing them.
- Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */
- if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
- || errorcount || sorrycount)
- goto exit_rest_of_compilation;
-
- timevar_push (TV_JUMP);
- open_dump_file (DFI_sibling, decl);
- insns = get_insns ();
- rebuild_jump_labels (insns);
- find_exception_handler_labels ();
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
-
- delete_unreachable_blocks ();
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ reg_alloc ();
- /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */
- if (flag_guess_branch_prob)
+ timevar_pop (TV_LOCAL_ALLOC);
+ if (dump_file[DFI_lreg].enabled)
{
- timevar_push (TV_BRANCH_PROB);
- note_prediction_to_br_prob ();
- timevar_pop (TV_BRANCH_PROB);
- }
+ timevar_push (TV_DUMP);
- /* We may have potential sibling or tail recursion sites. Select one
- (of possibly multiple) methods of performing the call. */
- if (flag_optimize_sibling_calls)
- {
- rtx insn;
- optimize_sibling_and_tail_recursive_calls ();
+ close_dump_file (DFI_lreg, NULL, NULL);
+ timevar_pop (TV_DUMP);
+ }
- /* Recompute the CFG as sibling optimization clobbers it randomly. */
- free_bb_for_insn ();
- find_exception_handler_labels ();
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ /* XXX clean up the whole mess to bring live info in shape again. */
+ timevar_push (TV_GLOBAL_ALLOC);
+ open_dump_file (DFI_greg, decl);
- /* There is pass ordering problem - we must lower NOTE_INSN_PREDICTION
- notes before simplifying cfg and we must do lowering after sibcall
- that unhides parts of RTL chain and cleans up the CFG.
+ build_insn_chain (insns);
+ failure = reload (insns, 0);
- Until sibcall is replaced by tree-level optimizer, lets just
- sweep away the NOTE_INSN_PREDICTION notes that leaked out. */
- for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
- if (GET_CODE (insn) == NOTE
- && NOTE_LINE_NUMBER (insn) == NOTE_INSN_PREDICTION)
- delete_insn (insn);
- }
- close_dump_file (DFI_sibling, print_rtl, get_insns ());
- timevar_pop (TV_JUMP);
+ timevar_pop (TV_GLOBAL_ALLOC);
- scope_to_insns_initialize ();
- /* Complete generation of exception handling code. */
- if (doing_eh (0))
+ if (dump_file[DFI_greg].enabled)
{
- timevar_push (TV_JUMP);
- open_dump_file (DFI_eh, decl);
+ timevar_push (TV_DUMP);
- finish_eh_generation ();
+ dump_global_regs (rtl_dump_file);
- close_dump_file (DFI_eh, print_rtl, get_insns ());
- timevar_pop (TV_JUMP);
+ close_dump_file (DFI_greg, print_rtl_with_bb, insns);
+ timevar_pop (TV_DUMP);
}
- /* Delay emitting hard_reg_initial_value sets until after EH landing pad
- generation, which might create new sets. */
- emit_initial_value_sets ();
-
-#ifdef FINALIZE_PIC
- /* If we are doing position-independent code generation, now
- is the time to output special prologues and epilogues.
- We do not want to do this earlier, because it just clutters
- up inline functions with meaningless insns. */
- if (flag_pic)
- FINALIZE_PIC;
-#endif
+ if (failure)
+ return true;
- insns = get_insns ();
+ reload_completed = 1;
+ *rebuild_notes = 0;
- /* Copy any shared structure that should not be shared. */
- unshare_all_rtl (current_function_decl, insns);
+ return false;
+}
-#ifdef SETJMP_VIA_SAVE_AREA
- /* This must be performed before virtual register instantiation.
- Please be aware the everything in the compiler that can look
- at the RTL up to this point must understand that REG_SAVE_AREA
- is just like a use of the REG contained inside. */
- if (current_function_calls_alloca)
- optimize_save_area_alloca (insns);
-#endif
+/* Run old register allocator. Return TRUE if we must exit
+ rest_of_compilation upon return. */
+static bool
+rest_of_handle_old_regalloc (tree decl, rtx insns, int *rebuild_notes)
+{
+ int failure;
- /* Instantiate all virtual registers. */
- instantiate_virtual_regs (current_function_decl, insns);
+ /* Allocate the reg_renumber array. */
+ allocate_reg_info (max_regno, FALSE, TRUE);
- open_dump_file (DFI_jump, decl);
+ /* And the reg_equiv_memory_loc array. */
+ reg_equiv_memory_loc = (rtx *) xcalloc (max_regno, sizeof (rtx));
- /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
- are initialized and to compute whether control can drop off the end
- of the function. */
+ allocate_initial_values (reg_equiv_memory_loc);
- timevar_push (TV_JUMP);
- /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this
- before jump optimization switches branch directions. */
- if (flag_guess_branch_prob)
- expected_value_to_br_prob ();
+ regclass (insns, max_reg_num (), rtl_dump_file);
+ *rebuild_notes = local_alloc ();
- reg_scan (insns, max_reg_num (), 0);
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- delete_trivially_dead_insns (insns, max_reg_num ());
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
+ timevar_pop (TV_LOCAL_ALLOC);
- if (optimize)
+ if (dump_file[DFI_lreg].enabled)
{
- free_bb_for_insn ();
- copy_loop_headers (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ timevar_push (TV_DUMP);
+
+ dump_flow_info (rtl_dump_file);
+ dump_local_alloc (rtl_dump_file);
+
+ close_dump_file (DFI_lreg, print_rtl_with_bb, insns);
+ timevar_pop (TV_DUMP);
}
- purge_line_number_notes (insns);
- timevar_pop (TV_JUMP);
- close_dump_file (DFI_jump, print_rtl, insns);
+ ggc_collect ();
- /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
- if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
+ timevar_push (TV_GLOBAL_ALLOC);
+ open_dump_file (DFI_greg, decl);
+
+ /* If optimizing, allocate remaining pseudo-regs. Do the reload
+ pass fixing up any insns that are invalid. */
+
+ if (optimize)
+ failure = global_alloc (rtl_dump_file);
+ else
{
- goto exit_rest_of_compilation;
+ build_insn_chain (insns);
+ failure = reload (insns, 0);
}
- /* Long term, this should probably move before the jump optimizer too,
- but I didn't want to disturb the rtl_dump_and_exit and related
- stuff at this time. */
- if (optimize > 0 && flag_ssa)
+ timevar_pop (TV_GLOBAL_ALLOC);
+
+ if (dump_file[DFI_greg].enabled)
{
- /* Convert to SSA form. */
+ timevar_push (TV_DUMP);
- timevar_push (TV_TO_SSA);
- open_dump_file (DFI_ssa, decl);
+ dump_global_regs (rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- convert_to_ssa ();
+ close_dump_file (DFI_greg, print_rtl_with_bb, insns);
+ timevar_pop (TV_DUMP);
+ }
- close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
- timevar_pop (TV_TO_SSA);
+ return failure;
+}
- /* Perform sparse conditional constant propagation, if requested. */
- if (flag_ssa_ccp)
- {
- timevar_push (TV_SSA_CCP);
- open_dump_file (DFI_ssa_ccp, decl);
+/* Run the regrename and cprop passes. */
+static void
+rest_of_handle_regrename (tree decl, rtx insns)
+{
+ timevar_push (TV_RENAME_REGISTERS);
+ open_dump_file (DFI_rnreg, decl);
- ssa_const_prop ();
+ if (flag_rename_registers)
+ regrename_optimize ();
+ if (flag_cprop_registers)
+ copyprop_hardreg_forward ();
- close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_SSA_CCP);
- }
+ close_dump_file (DFI_rnreg, print_rtl_with_bb, insns);
+ timevar_pop (TV_RENAME_REGISTERS);
+}
- /* It would be useful to cleanup the CFG at this point, but block
- merging and possibly other transformations might leave a PHI
- node in the middle of a basic block, which is a strict no-no. */
+/* Reorder basic blocks. */
+static void
+rest_of_handle_reorder_blocks (tree decl, rtx insns)
+{
+ timevar_push (TV_REORDER_BLOCKS);
+ open_dump_file (DFI_bbro, decl);
+
+ /* Last attempt to optimize CFG, as scheduling, peepholing and insn
+ splitting possibly introduced more crossjumping opportunities. */
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE
+ | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0));
+
+ if (flag_sched2_use_traces && flag_schedule_insns_after_reload)
+ tracer ();
+ if (flag_reorder_blocks)
+ reorder_basic_blocks ();
+ if (flag_reorder_blocks
+ || (flag_sched2_use_traces && flag_schedule_insns_after_reload))
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
+
+ close_dump_file (DFI_bbro, print_rtl_with_bb, insns);
+ timevar_pop (TV_REORDER_BLOCKS);
+}
- /* The SSA implementation uses basic block numbers in its phi
- nodes. Thus, changing the control-flow graph or the basic
- blocks, e.g., calling find_basic_blocks () or cleanup_cfg (),
- may cause problems. */
+#ifdef INSN_SCHEDULING
+/* Run instruction scheduler. */
+static void
+rest_of_handle_sched (tree decl, rtx insns)
+{
+ timevar_push (TV_SCHED);
- if (flag_ssa_dce)
- {
- /* Remove dead code. */
+ /* Print function header into sched dump now
+ because doing the sched analysis makes some of the dump. */
+ if (optimize > 0 && flag_schedule_insns)
+ {
+ open_dump_file (DFI_sched, decl);
- timevar_push (TV_SSA_DCE);
- open_dump_file (DFI_ssa_dce, decl);
+ /* Do control and data sched analysis,
+ and write some of the results to dump file. */
- insns = get_insns ();
- ssa_eliminate_dead_code ();
+ schedule_insns (rtl_dump_file);
- close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns);
- timevar_pop (TV_SSA_DCE);
- }
+ close_dump_file (DFI_sched, print_rtl_with_bb, insns);
+ }
+ timevar_pop (TV_SCHED);
- /* Convert from SSA form. */
+ ggc_collect ();
+}
- timevar_push (TV_FROM_SSA);
- open_dump_file (DFI_ussa, decl);
+/* Run second scheduling pass after reload. */
+static void
+rest_of_handle_sched2 (tree decl, rtx insns)
+{
+ timevar_push (TV_SCHED2);
+ open_dump_file (DFI_sched2, decl);
- convert_from_ssa ();
- /* New registers have been created. Rescan their usage. */
- reg_scan (insns, max_reg_num (), 1);
+ /* Do control and data sched analysis again,
+ and write some more of the results to dump file. */
- close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
- timevar_pop (TV_FROM_SSA);
+ split_all_insns (1);
- ggc_collect ();
+ if (flag_sched2_use_superblocks || flag_sched2_use_traces)
+ {
+ schedule_ebbs (rtl_dump_file);
+ /* No liveness updating code yet, but it should be easy to do.
+ reg-stack recompute the liveness when needed for now. */
+ count_or_remove_death_notes (NULL, 1);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
}
+ else
+ schedule_insns (rtl_dump_file);
- timevar_push (TV_JUMP);
- cleanup_cfg (optimize ? CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP: 0);
-
- /* Try to identify useless null pointer tests and delete them. */
- if (flag_delete_null_pointer_checks)
- {
- open_dump_file (DFI_null, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
+ close_dump_file (DFI_sched2, print_rtl_with_bb, insns);
+ timevar_pop (TV_SCHED2);
- if (delete_null_pointer_checks (insns))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ ggc_collect ();
+}
+#endif
- close_dump_file (DFI_null, print_rtl_with_bb, insns);
- }
+/* Register allocation pre-pass, to reduce number of moves necessary
+ for two-address machines. */
+static void
+rest_of_handle_regmove (tree decl, rtx insns)
+{
+ timevar_push (TV_REGMOVE);
+ open_dump_file (DFI_regmove, decl);
- /* Jump optimization, and the removal of NULL pointer checks, may
- have reduced the number of instructions substantially. CSE, and
- future passes, allocate arrays whose dimensions involve the
- maximum instruction UID, so if we can reduce the maximum UID
- we'll save big on memory. */
- renumber_insns (rtl_dump_file);
- timevar_pop (TV_JUMP);
+ regmove_optimize (insns, max_reg_num (), rtl_dump_file);
- close_dump_file (DFI_jump, print_rtl_with_bb, insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
+ close_dump_file (DFI_regmove, print_rtl_with_bb, insns);
+ timevar_pop (TV_REGMOVE);
ggc_collect ();
+}
- /* Perform common subexpression elimination.
- Nonzero value from `cse_main' means that jumps were simplified
- and some code may now be unreachable, so do
- jump optimization again. */
+/* Run tracer. */
+static void
+rest_of_handle_tracer (tree decl, rtx insns)
+{
+ timevar_push (TV_TRACER);
+ open_dump_file (DFI_tracer, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ tracer ();
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ reg_scan (insns, max_reg_num (), 0);
+ close_dump_file (DFI_tracer, print_rtl_with_bb, get_insns ());
+ timevar_pop (TV_TRACER);
+}
- if (optimize > 0)
+/* If-conversion and CFG cleanup. */
+static void
+rest_of_handle_if_conversion (tree decl, rtx insns)
+{
+ open_dump_file (DFI_ce1, decl);
+ if (flag_if_conversion)
{
- open_dump_file (DFI_cse, decl);
+ timevar_push (TV_IFCVT);
if (rtl_dump_file)
dump_flow_info (rtl_dump_file);
- timevar_push (TV_CSE);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ reg_scan (insns, max_reg_num (), 0);
+ if_convert (0);
+ timevar_pop (TV_IFCVT);
+ }
+ timevar_push (TV_JUMP);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ reg_scan (insns, max_reg_num (), 0);
+ timevar_pop (TV_JUMP);
+ close_dump_file (DFI_ce1, print_rtl_with_bb, get_insns ());
+}
- reg_scan (insns, max_reg_num (), 1);
+/* Rerun if-conversion, as combine may have simplified things enough
+ to now meet sequence length restrictions. */
+static void
+rest_of_handle_if_after_combine (tree decl, rtx insns)
+{
+ timevar_push (TV_IFCVT);
+ open_dump_file (DFI_ce2, decl);
- tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- if (tem)
- rebuild_jump_labels (insns);
- purge_all_dead_edges (0);
+ no_new_pseudos = 0;
+ if_convert (1);
+ no_new_pseudos = 1;
- delete_trivially_dead_insns (insns, max_reg_num ());
+ close_dump_file (DFI_ce2, print_rtl_with_bb, insns);
+ timevar_pop (TV_IFCVT);
+}
- /* If we are not running more CSE passes, then we are no longer
- expecting CSE to be run. But always rerun it in a cheap mode. */
- cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse;
+/* Do branch profiling and static profile estimation passes. */
+static void
+rest_of_handle_branch_prob (tree decl, rtx insns)
+{
+ struct loops loops;
- if (tem || optimize > 1)
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- /* Try to identify useless null pointer tests and delete them. */
- if (flag_delete_null_pointer_checks)
- {
- timevar_push (TV_JUMP);
+ timevar_push (TV_BRANCH_PROB);
+ open_dump_file (DFI_bp, decl);
+ if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
+ branch_prob ();
- if (delete_null_pointer_checks (insns))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- timevar_pop (TV_JUMP);
- }
+ /* Discover and record the loop depth at the head of each basic
+ block. The loop infrastructure does the real job for us. */
+ flow_loops_find (&loops, LOOP_TREE);
- /* The second pass of jump optimization is likely to have
- removed a bunch more instructions. */
- renumber_insns (rtl_dump_file);
+ if (rtl_dump_file)
+ flow_loops_dump (&loops, rtl_dump_file, NULL, 0);
- timevar_pop (TV_CSE);
- close_dump_file (DFI_cse, print_rtl_with_bb, insns);
- }
+ /* Estimate using heuristics if no profiling info is available. */
+ if (flag_guess_branch_prob)
+ estimate_probability (&loops);
+
+ flow_loops_free (&loops);
+ close_dump_file (DFI_bp, print_rtl_with_bb, insns);
+ timevar_pop (TV_BRANCH_PROB);
+}
+
+/* Do control and data flow analysis; write some of the results to the
+ dump file. */
+static void
+rest_of_handle_cfg (tree decl, rtx insns)
+{
+ open_dump_file (DFI_cfg, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ if (optimize)
+ cleanup_cfg (CLEANUP_EXPENSIVE
+ | (flag_thread_jumps ? CLEANUP_THREADING : 0));
+
+ /* It may make more sense to mark constant functions after dead code is
+ eliminated by life_analysis, but we need to do it early, as -fprofile-arcs
+ may insert code making function non-constant, but we still must consider
+ it as constant, otherwise -fbranch-probabilities will not read data back.
+
+ life_analysis rarely eliminates modification of external memory.
+ */
+ if (optimize)
+ mark_constant_function ();
+
+ close_dump_file (DFI_cfg, print_rtl_with_bb, insns);
+}
+/* Purge addressofs. */
+static void
+rest_of_handle_addresof (tree decl, rtx insns)
+{
open_dump_file (DFI_addressof, decl);
purge_addressof (insns);
reg_scan (insns, max_reg_num (), 1);
close_dump_file (DFI_addressof, print_rtl, insns);
+}
- ggc_collect ();
+/* We may have potential sibling or tail recursion sites. Select one
+ (of possibly multiple) methods of performing the call. */
+static void
+rest_of_handle_sibling_calls (rtx insns)
+{
+ rtx insn;
+ optimize_sibling_and_tail_recursive_calls ();
- /* Perform global cse. */
+ /* Recompute the CFG as sibling optimization clobbers it randomly. */
+ free_bb_for_insn ();
+ find_exception_handler_labels ();
+ rebuild_jump_labels (insns);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- if (optimize > 0 && flag_gcse)
- {
- int save_csb, save_cfj;
- int tem2 = 0;
+ /* There is pass ordering problem - we must lower NOTE_INSN_PREDICTION
+ notes before simplifying cfg and we must do lowering after sibcall
+ that unhides parts of RTL chain and cleans up the CFG.
- timevar_push (TV_GCSE);
- open_dump_file (DFI_gcse, decl);
+ Until sibcall is replaced by tree-level optimizer, lets just
+ sweep away the NOTE_INSN_PREDICTION notes that leaked out. */
+ for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
+ if (GET_CODE (insn) == NOTE
+ && NOTE_LINE_NUMBER (insn) == NOTE_INSN_PREDICTION)
+ delete_insn (insn);
- tem = gcse_main (insns, rtl_dump_file);
- rebuild_jump_labels (insns);
- delete_trivially_dead_insns (insns, max_reg_num ());
+ close_dump_file (DFI_sibling, print_rtl, get_insns ());
+}
- save_csb = flag_cse_skip_blocks;
- save_cfj = flag_cse_follow_jumps;
- flag_cse_skip_blocks = flag_cse_follow_jumps = 0;
+/* Perform jump bypassing and control flow optimizations. */
+static void
+rest_of_handle_jump_bypass (tree decl, rtx insns)
+{
+ timevar_push (TV_BYPASS);
+ open_dump_file (DFI_bypass, decl);
- /* If -fexpensive-optimizations, re-run CSE to clean up things done
- by gcse. */
- if (flag_expensive_optimizations)
- {
- timevar_push (TV_CSE);
- reg_scan (insns, max_reg_num (), 1);
- tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- purge_all_dead_edges (0);
- delete_trivially_dead_insns (insns, max_reg_num ());
- timevar_pop (TV_CSE);
- cse_not_expected = !flag_rerun_cse_after_loop;
- }
+ cleanup_cfg (CLEANUP_EXPENSIVE);
- /* If gcse or cse altered any jumps, rerun jump optimizations to clean
- things up. Then possibly re-run CSE again. */
- while (tem || tem2)
- {
- tem = tem2 = 0;
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- timevar_pop (TV_JUMP);
+ if (bypass_jumps (rtl_dump_file))
+ {
+ rebuild_jump_labels (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ }
- if (flag_expensive_optimizations)
- {
- timevar_push (TV_CSE);
- reg_scan (insns, max_reg_num (), 1);
- tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
- purge_all_dead_edges (0);
- delete_trivially_dead_insns (insns, max_reg_num ());
- timevar_pop (TV_CSE);
- }
- }
+ close_dump_file (DFI_bypass, print_rtl_with_bb, insns);
+ timevar_pop (TV_BYPASS);
- close_dump_file (DFI_gcse, print_rtl_with_bb, insns);
- timevar_pop (TV_GCSE);
+ ggc_collect ();
- ggc_collect ();
- flag_cse_skip_blocks = save_csb;
- flag_cse_follow_jumps = save_cfj;
#ifdef ENABLE_CHECKING
- verify_flow_info ();
+ verify_flow_info ();
#endif
+}
+
+/* Handle inlining of functions in rest_of_compilation. Return TRUE
+ if we must exit rest_of_compilation upon return. */
+static bool
+rest_of_handle_inlining (tree decl)
+{
+ rtx insns;
+ int inlinable = 0;
+ tree parent;
+ const char *lose;
+
+ /* If we are reconsidering an inline function at the end of
+ compilation, skip the stuff for making it inline. */
+ if (DECL_SAVED_INSNS (decl) != 0)
+ return 0;
+
+ /* If this is nested inside an inlined external function, pretend
+ it was only declared. Since we cannot inline such functions,
+ generating code for this one is not only not necessary but will
+ confuse some debugging output writers. */
+ for (parent = DECL_CONTEXT (current_function_decl);
+ parent != NULL_TREE;
+ parent = get_containing_scope (parent))
+ if (TREE_CODE (parent) == FUNCTION_DECL
+ && DECL_INLINE (parent) && DECL_EXTERNAL (parent))
+ {
+ DECL_INITIAL (decl) = 0;
+ return true;
+ }
+ else if (TYPE_P (parent))
+ /* A function in a local class should be treated normally. */
+ break;
+
+ /* If requested, consider whether to make this function inline. */
+ if ((DECL_INLINE (decl) && !flag_no_inline)
+ || flag_inline_functions)
+ {
+ timevar_push (TV_INTEGRATION);
+ lose = function_cannot_inline_p (decl);
+ timevar_pop (TV_INTEGRATION);
+ if (lose || ! optimize)
+ {
+ if (warn_inline && DECL_INLINE (decl))
+ warning_with_decl (decl, lose);
+ DECL_ABSTRACT_ORIGIN (decl) = 0;
+ /* Don't really compile an extern inline function.
+ If we can't make it inline, pretend
+ it was only declared. */
+ if (DECL_EXTERNAL (decl))
+ {
+ DECL_INITIAL (decl) = 0;
+ return true;
+ }
+ }
+ else {
+ /* ??? Note that we used to just make it look like if
+ the "inline" keyword was specified when we decide
+ to inline it (because of -finline-functions).
+ garloff@suse.de, 2002-04-24: Add another flag to
+ actually record this piece of information. */
+ if (!DECL_INLINE (decl))
+ DID_INLINE_FUNC (decl) = 1;
+ inlinable = DECL_INLINE (decl) = 1;
+ }
}
- /* Instantiate any remaining CONSTANT_P_RTX nodes. */
- if (optimize > 0 && flag_gcse && current_function_calls_constant_p)
- purge_builtin_constant_p ();
+ insns = get_insns ();
- /* Move constant computations out of loops. */
+ /* Dump the rtl code if we are dumping rtl. */
- if (optimize > 0 && flag_loop_optimize)
+ if (open_dump_file (DFI_rtl, decl))
{
- int do_unroll, do_prefetch;
+ if (DECL_SAVED_INSNS (decl))
+ fprintf (rtl_dump_file, ";; (integrable)\n\n");
+ close_dump_file (DFI_rtl, print_rtl, insns);
+ }
- timevar_push (TV_LOOP);
- delete_dead_jumptables ();
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- open_dump_file (DFI_loop, decl);
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
+ /* Convert from NOTE_INSN_EH_REGION style notes, and do other
+ sorts of eh initialization. Delay this until after the
+ initial rtl dump so that we can see the original nesting. */
+ convert_from_eh_region_ranges ();
+
+ /* If function is inline, and we don't yet know whether to
+ compile it by itself, defer decision till end of compilation.
+ wrapup_global_declarations will (indirectly) call
+ rest_of_compilation again for those functions that need to
+ be output. Also defer those functions that we are supposed
+ to defer. */
+
+ if (inlinable
+ || (DECL_INLINE (decl)
+ && flag_inline_functions
+ && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
+ && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))
+ && ! flag_keep_inline_functions)
+ || DECL_EXTERNAL (decl))))
+ DECL_DEFER_OUTPUT (decl) = 1;
- if (flag_unroll_loops)
- do_unroll = 0; /* Having two unrollers is useless. */
- else
- do_unroll = flag_old_unroll_loops ? LOOP_UNROLL : LOOP_AUTO_UNROLL;
- do_prefetch = flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0;
- if (flag_rerun_loop_opt)
+ if (DECL_INLINE (decl))
+ /* DWARF wants separate debugging info for abstract and
+ concrete instances of all inline functions, including those
+ declared inline but not inlined, and those inlined even
+ though they weren't declared inline. Conveniently, that's
+ what DECL_INLINE means at this point. */
+ (*debug_hooks->deferred_inline_function) (decl);
+
+ if (DECL_DEFER_OUTPUT (decl))
+ {
+ /* If -Wreturn-type, we have to do a bit of compilation. We just
+ want to call cleanup the cfg to figure out whether or not we can
+ fall off the end of the function; we do the minimum amount of
+ work necessary to make that safe. */
+ if (warn_return_type)
{
- cleanup_barriers ();
+ int saved_optimize = optimize;
- /* We only want to perform unrolling once. */
- loop_optimize (insns, rtl_dump_file, do_unroll);
- do_unroll = 0;
-
- /* The first call to loop_optimize makes some instructions
- trivially dead. We delete those instructions now in the
- hope that doing so will make the heuristics in loop work
- better and possibly speed up compilation. */
- delete_trivially_dead_insns (insns, max_reg_num ());
+ optimize = 0;
+ rebuild_jump_labels (insns);
+ find_exception_handler_labels ();
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP);
+ optimize = saved_optimize;
- /* The regscan pass is currently necessary as the alias
- analysis code depends on this information. */
- reg_scan (insns, max_reg_num (), 1);
+ /* CFG is no longer maintained up-to-date. */
+ free_bb_for_insn ();
}
- cleanup_barriers ();
- loop_optimize (insns, rtl_dump_file, do_unroll | LOOP_BCT | do_prefetch);
-
- /* Loop can create trivially dead instructions. */
- delete_trivially_dead_insns (insns, max_reg_num ());
- close_dump_file (DFI_loop, print_rtl, insns);
- timevar_pop (TV_LOOP);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- ggc_collect ();
+ set_nothrow_function_flags ();
+ if (current_function_nothrow)
+ /* Now we know that this can't throw; set the flag for the benefit
+ of other functions later in this translation unit. */
+ TREE_NOTHROW (current_function_decl) = 1;
+
+ timevar_push (TV_INTEGRATION);
+ save_for_inline (decl);
+ timevar_pop (TV_INTEGRATION);
+ DECL_SAVED_INSNS (decl)->inlinable = inlinable;
+ return true;
}
- /* Perform jump bypassing and control flow optimizations. */
- if (optimize > 0 && flag_gcse)
- {
- timevar_push (TV_BYPASS);
- open_dump_file (DFI_bypass, decl);
+ /* If specified extern inline but we aren't inlining it, we are
+ done. This goes for anything that gets here with DECL_EXTERNAL
+ set, not just things with DECL_INLINE. */
+ return (bool) DECL_EXTERNAL (decl);
+}
- cleanup_cfg (CLEANUP_EXPENSIVE);
- tem = bypass_jumps (rtl_dump_file);
+/* Rest of compilation helper to convert the rtl to SSA form. */
+static rtx
+rest_of_handle_ssa (tree decl, rtx insns)
+{
+ timevar_push (TV_TO_SSA);
+ open_dump_file (DFI_ssa, decl);
- if (tem)
- {
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- delete_trivially_dead_insns (insns, max_reg_num ());
- }
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ convert_to_ssa ();
- close_dump_file (DFI_bypass, print_rtl_with_bb, insns);
- timevar_pop (TV_BYPASS);
+ close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
+ timevar_pop (TV_TO_SSA);
- ggc_collect ();
+ /* Perform sparse conditional constant propagation, if requested. */
+ if (flag_ssa_ccp)
+ {
+ timevar_push (TV_SSA_CCP);
+ open_dump_file (DFI_ssa_ccp, decl);
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
+ ssa_const_prop ();
+
+ close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ());
+ timevar_pop (TV_SSA_CCP);
}
- /* Do control and data flow analysis; wrote some of the results to
- the dump file. */
+ /* It would be useful to cleanup the CFG at this point, but block
+ merging and possibly other transformations might leave a PHI
+ node in the middle of a basic block, which is a strict no-no. */
- timevar_push (TV_FLOW);
- open_dump_file (DFI_cfg, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0)
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
+ /* The SSA implementation uses basic block numbers in its phi
+ nodes. Thus, changing the control-flow graph or the basic
+ blocks, e.g., calling find_basic_blocks () or cleanup_cfg (),
+ may cause problems. */
- /* It may make more sense to mark constant functions after dead code is
- eliminated by life_analysis, but we need to do it early, as -fprofile-arcs
- may insert code making function non-constant, but we still must consider
- it as constant, otherwise -fbranch-probabilities will not read data back.
+ if (flag_ssa_dce)
+ {
+ /* Remove dead code. */
- life_analysis rarely eliminates modification of external memory.
- */
- if (optimize)
- mark_constant_function ();
+ timevar_push (TV_SSA_DCE);
+ open_dump_file (DFI_ssa_dce, decl);
- close_dump_file (DFI_cfg, print_rtl_with_bb, insns);
+ insns = get_insns ();
+ ssa_eliminate_dead_code ();
- /* Do branch profiling and static profile estimation passes. */
- if (optimize > 0 || cfun->arc_profile || flag_branch_probabilities)
- {
- struct loops loops;
+ close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns);
+ timevar_pop (TV_SSA_DCE);
+ }
- timevar_push (TV_BRANCH_PROB);
- open_dump_file (DFI_bp, decl);
- if (cfun->arc_profile || flag_branch_probabilities)
- branch_prob ();
+ /* Convert from SSA form. */
- /* Discover and record the loop depth at the head of each basic
- block. The loop infrastructure does the real job for us. */
- flow_loops_find (&loops, LOOP_TREE);
+ timevar_push (TV_FROM_SSA);
+ open_dump_file (DFI_ussa, decl);
- if (rtl_dump_file)
- flow_loops_dump (&loops, rtl_dump_file, NULL, 0);
+ convert_from_ssa ();
+ /* New registers have been created. Rescan their usage. */
+ reg_scan (insns, max_reg_num (), 1);
- /* Estimate using heuristics if no profiling info is available. */
- if (flag_guess_branch_prob)
- estimate_probability (&loops);
+ close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
+ timevar_pop (TV_FROM_SSA);
- flow_loops_free (&loops);
- close_dump_file (DFI_bp, print_rtl_with_bb, insns);
- timevar_pop (TV_BRANCH_PROB);
- }
- if (optimize > 0)
- {
- open_dump_file (DFI_ce1, decl);
- if (flag_if_conversion)
- {
- timevar_push (TV_IFCVT);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- reg_scan (insns, max_reg_num (), 0);
- if_convert (0);
- timevar_pop (TV_IFCVT);
- }
- timevar_push (TV_JUMP);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- reg_scan (insns, max_reg_num (), 0);
- timevar_pop (TV_JUMP);
- close_dump_file (DFI_ce1, print_rtl_with_bb, get_insns ());
- }
- if (flag_tracer)
- {
- timevar_push (TV_TRACER);
- open_dump_file (DFI_tracer, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- tracer ();
- cleanup_cfg (CLEANUP_EXPENSIVE);
- reg_scan (insns, max_reg_num (), 0);
- close_dump_file (DFI_tracer, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_TRACER);
- }
+ ggc_collect ();
- /* Perform loop optimalizations. It might be better to do them a bit
- sooner, but we want the profile feedback to work more efficiently. */
- if (optimize > 0
- && (flag_unswitch_loops
- || flag_peel_loops
- || flag_unroll_loops))
- {
- struct loops *loops;
- timevar_push (TV_LOOP);
- open_dump_file (DFI_loop2, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
+ return insns;
+}
- loops = loop_optimizer_init (rtl_dump_file);
+/* Try to identify useless null pointer tests and delete them. */
+static void
+rest_of_handle_null_pointer (tree decl, rtx insns)
+{
+ open_dump_file (DFI_null, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
- if (loops)
- {
- /* The optimalizations: */
- if (flag_unswitch_loops)
- unswitch_loops (loops);
+ if (delete_null_pointer_checks (insns))
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- if (flag_peel_loops || flag_unroll_loops)
- unroll_and_peel_loops (loops,
- (flag_peel_loops ? UAP_PEEL : 0) |
- (flag_unroll_loops ? UAP_UNROLL : 0) |
- (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0));
+ close_dump_file (DFI_null, print_rtl_with_bb, insns);
+}
- loop_optimizer_finalize (loops, rtl_dump_file);
- }
+/* Try combining insns through substitution. */
+static void
+rest_of_handle_combine (tree decl, rtx insns)
+{
+ int rebuild_jump_labels_after_combine = 0;
- cleanup_cfg (CLEANUP_EXPENSIVE);
- delete_trivially_dead_insns (insns, max_reg_num ());
- reg_scan (insns, max_reg_num (), 0);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_LOOP);
- ggc_collect ();
- }
+ timevar_push (TV_COMBINE);
+ open_dump_file (DFI_combine, decl);
- if (flag_rerun_cse_after_loop)
+ rebuild_jump_labels_after_combine
+ = combine_instructions (insns, max_reg_num ());
+
+ /* Combining insns may have turned an indirect jump into a
+ direct jump. Rebuild the JUMP_LABEL fields of jumping
+ instructions. */
+ if (rebuild_jump_labels_after_combine)
{
- timevar_push (TV_CSE2);
- open_dump_file (DFI_cse2, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- /* CFG is no longer maintained up-to-date. */
- tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file);
- purge_all_dead_edges (0);
- delete_trivially_dead_insns (insns, max_reg_num ());
+ timevar_push (TV_JUMP);
+ rebuild_jump_labels (insns);
+ timevar_pop (TV_JUMP);
- if (tem)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- timevar_pop (TV_JUMP);
- }
- reg_scan (insns, max_reg_num (), 0);
- close_dump_file (DFI_cse2, print_rtl_with_bb, insns);
- ggc_collect ();
- timevar_pop (TV_CSE2);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
}
- cse_not_expected = 1;
+ close_dump_file (DFI_combine, print_rtl_with_bb, insns);
+ timevar_pop (TV_COMBINE);
+ ggc_collect ();
+}
+
+/* Perform life analysis. */
+static void
+rest_of_handle_life (tree decl, rtx insns)
+{
open_dump_file (DFI_life, decl);
regclass_init ();
- check_function_return_warnings ();
-
#ifdef ENABLE_CHECKING
verify_flow_info ();
#endif
| (flag_thread_jumps ? CLEANUP_THREADING : 0));
timevar_pop (TV_FLOW);
- no_new_pseudos = 1;
-
- if (warn_uninitialized || extra_warnings)
+ if (warn_uninitialized)
{
uninitialized_vars_warning (DECL_INITIAL (decl));
if (extra_warnings)
if (optimize)
{
- clear_bb_flags ();
if (!flag_new_regalloc && initialize_uninitialized_subregs ())
{
- /* Insns were inserted, so things might look a bit different. */
+ /* Insns were inserted, and possibly pseudos created, so
+ things might look a bit different. */
insns = get_insns ();
- update_life_info_in_dirty_blocks (UPDATE_LIFE_GLOBAL_RM_NOTES,
- PROP_LOG_LINKS | PROP_REG_INFO
- | PROP_DEATH_NOTES);
+ allocate_reg_life_data ();
+ update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES,
+ PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES);
}
}
+ no_new_pseudos = 1;
+
close_dump_file (DFI_life, print_rtl_with_bb, insns);
ggc_collect ();
+}
- /* If -opt, try combining insns through substitution. */
+/* Perform common subexpression elimination. Nonzero value from
+ `cse_main' means that jumps were simplified and some code may now
+ be unreachable, so do jump optimization again. */
+static void
+rest_of_handle_cse (tree decl, rtx insns)
+{
+ int tem;
- if (optimize > 0)
+ open_dump_file (DFI_cse, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ timevar_push (TV_CSE);
+
+ reg_scan (insns, max_reg_num (), 1);
+
+ tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
+ if (tem)
+ rebuild_jump_labels (insns);
+ purge_all_dead_edges (0);
+
+ delete_trivially_dead_insns (insns, max_reg_num ());
+
+ /* If we are not running more CSE passes, then we are no longer
+ expecting CSE to be run. But always rerun it in a cheap mode. */
+ cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse;
+
+ if (tem || optimize > 1)
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ /* Try to identify useless null pointer tests and delete them. */
+ if (flag_delete_null_pointer_checks)
{
- int rebuild_jump_labels_after_combine = 0;
+ timevar_push (TV_JUMP);
- timevar_push (TV_COMBINE);
- open_dump_file (DFI_combine, decl);
+ if (delete_null_pointer_checks (insns))
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ timevar_pop (TV_JUMP);
+ }
- rebuild_jump_labels_after_combine
- = combine_instructions (insns, max_reg_num ());
+ /* The second pass of jump optimization is likely to have
+ removed a bunch more instructions. */
+ renumber_insns (rtl_dump_file);
- /* Combining insns may have turned an indirect jump into a
- direct jump. Rebuild the JUMP_LABEL fields of jumping
- instructions. */
- if (rebuild_jump_labels_after_combine)
- {
- timevar_push (TV_JUMP);
- rebuild_jump_labels (insns);
- timevar_pop (TV_JUMP);
+ timevar_pop (TV_CSE);
+ close_dump_file (DFI_cse, print_rtl_with_bb, insns);
+}
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- }
+/* Run second CSE pass after loop optimizations. */
+static void
+rest_of_handle_cse2 (tree decl, rtx insns)
+{
+ int tem;
- close_dump_file (DFI_combine, print_rtl_with_bb, insns);
- timevar_pop (TV_COMBINE);
+ timevar_push (TV_CSE2);
+ open_dump_file (DFI_cse2, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ /* CFG is no longer maintained up-to-date. */
+ tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file);
+ purge_all_dead_edges (0);
+ delete_trivially_dead_insns (insns, max_reg_num ());
- ggc_collect ();
+ if (tem)
+ {
+ timevar_push (TV_JUMP);
+ rebuild_jump_labels (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ timevar_pop (TV_JUMP);
}
+ reg_scan (insns, max_reg_num (), 0);
+ close_dump_file (DFI_cse2, print_rtl_with_bb, insns);
+ ggc_collect ();
+ timevar_pop (TV_CSE2);
+}
- /* Rerun if-conversion, as combine may have simplified things enough to
- now meet sequence length restrictions. */
- if (flag_if_conversion)
+/* Perform global cse. */
+static void
+rest_of_handle_gcse (tree decl, rtx insns)
+{
+ int save_csb, save_cfj;
+ int tem2 = 0, tem;
+
+ timevar_push (TV_GCSE);
+ open_dump_file (DFI_gcse, decl);
+
+ tem = gcse_main (insns, rtl_dump_file);
+ rebuild_jump_labels (insns);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+
+ save_csb = flag_cse_skip_blocks;
+ save_cfj = flag_cse_follow_jumps;
+ flag_cse_skip_blocks = flag_cse_follow_jumps = 0;
+
+ /* Instantiate any remaining CONSTANT_P_RTX nodes. */
+ if (current_function_calls_constant_p)
+ purge_builtin_constant_p ();
+
+ /* If -fexpensive-optimizations, re-run CSE to clean up things done
+ by gcse. */
+ if (flag_expensive_optimizations)
{
- timevar_push (TV_IFCVT);
- open_dump_file (DFI_ce2, decl);
+ timevar_push (TV_CSE);
+ reg_scan (insns, max_reg_num (), 1);
+ tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
+ purge_all_dead_edges (0);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ timevar_pop (TV_CSE);
+ cse_not_expected = !flag_rerun_cse_after_loop;
+ }
- no_new_pseudos = 0;
- if_convert (1);
- no_new_pseudos = 1;
+ /* If gcse or cse altered any jumps, rerun jump optimizations to clean
+ things up. Then possibly re-run CSE again. */
+ while (tem || tem2)
+ {
+ tem = tem2 = 0;
+ timevar_push (TV_JUMP);
+ rebuild_jump_labels (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ timevar_pop (TV_JUMP);
- close_dump_file (DFI_ce2, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT);
+ if (flag_expensive_optimizations)
+ {
+ timevar_push (TV_CSE);
+ reg_scan (insns, max_reg_num (), 1);
+ tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
+ purge_all_dead_edges (0);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ timevar_pop (TV_CSE);
+ }
}
- /* Register allocation pre-pass, to reduce number of moves
- necessary for two-address machines. */
- if (optimize > 0 && (flag_regmove || flag_expensive_optimizations))
+ close_dump_file (DFI_gcse, print_rtl_with_bb, insns);
+ timevar_pop (TV_GCSE);
+
+ ggc_collect ();
+ flag_cse_skip_blocks = save_csb;
+ flag_cse_follow_jumps = save_cfj;
+#ifdef ENABLE_CHECKING
+ verify_flow_info ();
+#endif
+}
+
+/* Move constant computations out of loops. */
+static void
+rest_of_handle_loop_optimize (tree decl, rtx insns)
+{
+ int do_unroll, do_prefetch;
+
+ timevar_push (TV_LOOP);
+ delete_dead_jumptables ();
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ open_dump_file (DFI_loop, decl);
+
+ /* CFG is no longer maintained up-to-date. */
+ free_bb_for_insn ();
+
+ if (flag_unroll_loops)
+ do_unroll = 0; /* Having two unrollers is useless. */
+ else
+ do_unroll = flag_old_unroll_loops ? LOOP_UNROLL : LOOP_AUTO_UNROLL;
+ do_prefetch = flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0;
+
+ if (flag_rerun_loop_opt)
{
- timevar_push (TV_REGMOVE);
- open_dump_file (DFI_regmove, decl);
+ cleanup_barriers ();
- regmove_optimize (insns, max_reg_num (), rtl_dump_file);
+ /* We only want to perform unrolling once. */
+ loop_optimize (insns, rtl_dump_file, do_unroll);
+ do_unroll = 0;
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- close_dump_file (DFI_regmove, print_rtl_with_bb, insns);
- timevar_pop (TV_REGMOVE);
+ /* The first call to loop_optimize makes some instructions
+ trivially dead. We delete those instructions now in the
+ hope that doing so will make the heuristics in loop work
+ better and possibly speed up compilation. */
+ delete_trivially_dead_insns (insns, max_reg_num ());
+
+ /* The regscan pass is currently necessary as the alias
+ analysis code depends on this information. */
+ reg_scan (insns, max_reg_num (), 1);
+ }
+ cleanup_barriers ();
+ loop_optimize (insns, rtl_dump_file, do_unroll | LOOP_BCT | do_prefetch);
+
+ /* Loop can create trivially dead instructions. */
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ close_dump_file (DFI_loop, print_rtl, insns);
+ timevar_pop (TV_LOOP);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+
+ ggc_collect ();
+}
+
+/* Perform loop optimizations. It might be better to do them a bit
+ sooner, but we want the profile feedback to work more
+ efficiently. */
+static void
+rest_of_handle_loop2 (tree decl, rtx insns)
+{
+ struct loops *loops;
+ timevar_push (TV_LOOP);
+ open_dump_file (DFI_loop2, decl);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+
+ loops = loop_optimizer_init (rtl_dump_file);
+
+ if (loops)
+ {
+ /* The optimizations: */
+ if (flag_unswitch_loops)
+ unswitch_loops (loops);
+
+ if (flag_peel_loops || flag_unroll_loops)
+ unroll_and_peel_loops (loops,
+ (flag_peel_loops ? UAP_PEEL : 0) |
+ (flag_unroll_loops ? UAP_UNROLL : 0) |
+ (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0));
+
+ loop_optimizer_finalize (loops, rtl_dump_file);
+ }
+
+ cleanup_cfg (CLEANUP_EXPENSIVE);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ reg_scan (insns, max_reg_num (), 0);
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ());
+ timevar_pop (TV_LOOP);
+ ggc_collect ();
+}
+
+/* This is called from finish_function (within langhooks.parse_file)
+ after each top-level definition is parsed.
+ It is supposed to compile that function or variable
+ and output the assembler code for it.
+ After we return, the tree storage is freed. */
+
+void
+rest_of_compilation (tree decl)
+{
+ rtx insns;
+ int rebuild_label_notes_after_reload;
+
+ timevar_push (TV_REST_OF_COMPILATION);
+
+ /* Register rtl specific functions for cfg. */
+ rtl_register_cfg_hooks ();
+
+ /* Now that we're out of the frontend, we shouldn't have any more
+ CONCATs anywhere. */
+ generating_concat_p = 0;
+
+ /* When processing delayed functions, prepare_function_start() won't
+ have been run to re-initialize it. */
+ cse_not_expected = ! optimize;
+
+ /* First, make sure that NOTE_BLOCK is set correctly for each
+ NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */
+ if (!cfun->x_whole_function_mode_p)
+ identify_blocks ();
+
+ /* In function-at-a-time mode, we do not attempt to keep the BLOCK
+ tree in sensible shape. So, we just recalculate it here. */
+ if (cfun->x_whole_function_mode_p)
+ reorder_blocks ();
+
+ init_flow ();
+
+ if (rest_of_handle_inlining (decl))
+ goto exit_rest_of_compilation;
+
+ /* If we're emitting a nested function, make sure its parent gets
+ emitted as well. Doing otherwise confuses debug info. */
+ {
+ tree parent;
+ for (parent = DECL_CONTEXT (current_function_decl);
+ parent != NULL_TREE;
+ parent = get_containing_scope (parent))
+ if (TREE_CODE (parent) == FUNCTION_DECL)
+ TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1;
+ }
+
+ /* We are now committed to emitting code for this function. Do any
+ preparation, such as emitting abstract debug info for the inline
+ before it gets mangled by optimization. */
+ if (DECL_INLINE (decl))
+ (*debug_hooks->outlining_inline_function) (decl);
+
+ /* Remove any notes we don't need. That will make iterating
+ over the instruction sequence faster, and allow the garbage
+ collector to reclaim the memory used by the notes. */
+ remove_unnecessary_notes ();
+ reorder_blocks ();
+
+ ggc_collect ();
+
+ /* Initialize some variables used by the optimizers. */
+ init_function_for_compilation ();
+
+ if (! DECL_DEFER_OUTPUT (decl))
+ TREE_ASM_WRITTEN (decl) = 1;
+
+ /* Now that integrate will no longer see our rtl, we need not
+ distinguish between the return value of this function and the
+ return value of called functions. Also, we can remove all SETs
+ of subregs of hard registers; they are only here because of
+ integrate. Also, we can now initialize pseudos intended to
+ carry magic hard reg data throughout the function. */
+ rtx_equal_function_value_matters = 0;
+ purge_hard_subreg_sets (get_insns ());
+
+ /* Early return if there were errors. We can run afoul of our
+ consistency checks, and there's not really much point in fixing them.
+ Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */
+ if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
+ || errorcount || sorrycount)
+ goto exit_rest_of_compilation;
+
+ timevar_push (TV_JUMP);
+ open_dump_file (DFI_sibling, decl);
+ insns = get_insns ();
+ rebuild_jump_labels (insns);
+ find_exception_handler_labels ();
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+
+ delete_unreachable_blocks ();
+
+ /* We have to issue these warnings now already, because CFG cleanups
+ further down may destroy the required information. */
+ check_function_return_warnings ();
+
+ /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */
+ if (flag_guess_branch_prob)
+ {
+ timevar_push (TV_BRANCH_PROB);
+ note_prediction_to_br_prob ();
+ timevar_pop (TV_BRANCH_PROB);
+ }
+
+ if (flag_optimize_sibling_calls)
+ rest_of_handle_sibling_calls (insns);
+
+ timevar_pop (TV_JUMP);
+
+ insn_locators_initialize ();
+ /* Complete generation of exception handling code. */
+ if (doing_eh (0))
+ {
+ timevar_push (TV_JUMP);
+ open_dump_file (DFI_eh, decl);
+
+ finish_eh_generation ();
+
+ close_dump_file (DFI_eh, print_rtl, get_insns ());
+ timevar_pop (TV_JUMP);
+ }
+
+ /* Delay emitting hard_reg_initial_value sets until after EH landing pad
+ generation, which might create new sets. */
+ emit_initial_value_sets ();
+
+#ifdef FINALIZE_PIC
+ /* If we are doing position-independent code generation, now
+ is the time to output special prologues and epilogues.
+ We do not want to do this earlier, because it just clutters
+ up inline functions with meaningless insns. */
+ if (flag_pic)
+ FINALIZE_PIC;
+#endif
+
+ insns = get_insns ();
+
+ /* Copy any shared structure that should not be shared. */
+ unshare_all_rtl (current_function_decl, insns);
+
+#ifdef SETJMP_VIA_SAVE_AREA
+ /* This must be performed before virtual register instantiation.
+ Please be aware the everything in the compiler that can look
+ at the RTL up to this point must understand that REG_SAVE_AREA
+ is just like a use of the REG contained inside. */
+ if (current_function_calls_alloca)
+ optimize_save_area_alloca (insns);
+#endif
+
+ /* Instantiate all virtual registers. */
+ instantiate_virtual_regs (current_function_decl, insns);
+
+ open_dump_file (DFI_jump, decl);
+
+ /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
+ are initialized and to compute whether control can drop off the end
+ of the function. */
+
+ timevar_push (TV_JUMP);
+ /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this
+ before jump optimization switches branch directions. */
+ if (flag_guess_branch_prob)
+ expected_value_to_br_prob ();
+
+ reg_scan (insns, max_reg_num (), 0);
+ rebuild_jump_labels (insns);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ delete_trivially_dead_insns (insns, max_reg_num ());
+ if (rtl_dump_file)
+ dump_flow_info (rtl_dump_file);
+ cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP
+ | (flag_thread_jumps ? CLEANUP_THREADING : 0));
+
+ if (optimize)
+ {
+ free_bb_for_insn ();
+ copy_loop_headers (insns);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ }
+ purge_line_number_notes (insns);
+
+ timevar_pop (TV_JUMP);
+ close_dump_file (DFI_jump, print_rtl, insns);
+
+ /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
+ if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
+ goto exit_rest_of_compilation;
+
+ /* Long term, this should probably move before the jump optimizer too,
+ but I didn't want to disturb the rtl_dump_and_exit and related
+ stuff at this time. */
+ if (optimize > 0 && flag_ssa)
+ insns = rest_of_handle_ssa (decl, insns);
+
+ timevar_push (TV_JUMP);
+
+ if (optimize)
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+
+ if (flag_delete_null_pointer_checks)
+ rest_of_handle_null_pointer (decl, insns);
+
+ /* Jump optimization, and the removal of NULL pointer checks, may
+ have reduced the number of instructions substantially. CSE, and
+ future passes, allocate arrays whose dimensions involve the
+ maximum instruction UID, so if we can reduce the maximum UID
+ we'll save big on memory. */
+ renumber_insns (rtl_dump_file);
+ timevar_pop (TV_JUMP);
+
+ close_dump_file (DFI_jump, print_rtl_with_bb, insns);
+
+ ggc_collect ();
+
+ if (optimize > 0)
+ rest_of_handle_cse (decl, insns);
+
+ rest_of_handle_addresof (decl, insns);
+
+ ggc_collect ();
+
+ if (optimize > 0)
+ {
+ if (flag_gcse)
+ rest_of_handle_gcse (decl, insns);
+
+ if (flag_loop_optimize)
+ rest_of_handle_loop_optimize (decl, insns);
+
+ if (flag_gcse)
+ rest_of_handle_jump_bypass (decl, insns);
+ }
+
+ timevar_push (TV_FLOW);
+
+ rest_of_handle_cfg (decl, insns);
+
+ if (optimize > 0
+ || profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
+ rest_of_handle_branch_prob (decl, insns);
+
+ if (optimize > 0)
+ rest_of_handle_if_conversion (decl, insns);
+
+ if (flag_tracer)
+ rest_of_handle_tracer (decl, insns);
+
+ if (optimize > 0
+ && (flag_unswitch_loops
+ || flag_peel_loops
+ || flag_unroll_loops))
+ rest_of_handle_loop2 (decl, insns);
+
+ if (flag_rerun_cse_after_loop)
+ rest_of_handle_cse2 (decl, insns);
+
+ cse_not_expected = 1;
+
+ rest_of_handle_life (decl, insns);
+
+ if (optimize > 0)
+ rest_of_handle_combine (decl, insns);
+
+ if (flag_if_conversion)
+ rest_of_handle_if_after_combine (decl, insns);
- ggc_collect ();
- }
+ if (optimize > 0 && (flag_regmove || flag_expensive_optimizations))
+ rest_of_handle_regmove (decl, insns);
/* Do unconditional splitting before register allocation to allow machine
description to add extra information not needed previously. */
(see handling of reg_known_equiv in init_alias_analysis). */
recompute_reg_usage (insns, !optimize_size);
- timevar_push (TV_SCHED);
-
#ifdef INSN_SCHEDULING
-
- /* Print function header into sched dump now
- because doing the sched analysis makes some of the dump. */
- if (optimize > 0 && flag_schedule_insns)
- {
- open_dump_file (DFI_sched, decl);
-
- /* Do control and data sched analysis,
- and write some of the results to dump file. */
-
- schedule_insns (rtl_dump_file);
-
- close_dump_file (DFI_sched, print_rtl_with_bb, insns);
- }
+ rest_of_handle_sched (decl, insns);
#endif
- timevar_pop (TV_SCHED);
-
- ggc_collect ();
/* Determine if the current function is a leaf before running reload
since this can impact optimizations done by the prologue and
timevar_push (TV_LOCAL_ALLOC);
open_dump_file (DFI_lreg, decl);
- /* Allocate pseudo-regs that are used only within 1 basic block.
-
- RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the
- jump optimizer after register allocation and reloading are finished. */
-
if (flag_new_regalloc)
{
- delete_trivially_dead_insns (insns, max_reg_num ());
- reg_alloc ();
-
- timevar_pop (TV_LOCAL_ALLOC);
- if (dump_file[DFI_lreg].enabled)
- {
- timevar_push (TV_DUMP);
-
- close_dump_file (DFI_lreg, NULL, NULL);
- timevar_pop (TV_DUMP);
- }
-
- /* XXX clean up the whole mess to bring live info in shape again. */
- timevar_push (TV_GLOBAL_ALLOC);
- open_dump_file (DFI_greg, decl);
-
- build_insn_chain (insns);
- failure = reload (insns, 0);
-
- timevar_pop (TV_GLOBAL_ALLOC);
-
- if (dump_file[DFI_greg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_global_regs (rtl_dump_file);
-
- close_dump_file (DFI_greg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- if (failure)
- goto exit_rest_of_compilation;
- reload_completed = 1;
- rebuild_label_notes_after_reload = 0;
+ if (rest_of_handle_new_regalloc (decl, insns,
+ &rebuild_label_notes_after_reload))
+ goto exit_rest_of_compilation;
}
else
{
- /* Allocate the reg_renumber array. */
- allocate_reg_info (max_regno, FALSE, TRUE);
-
- /* And the reg_equiv_memory_loc array. */
- reg_equiv_memory_loc = (rtx *) xcalloc (max_regno, sizeof (rtx));
-
- allocate_initial_values (reg_equiv_memory_loc);
-
- regclass (insns, max_reg_num (), rtl_dump_file);
- rebuild_label_notes_after_reload = local_alloc ();
-
- timevar_pop (TV_LOCAL_ALLOC);
-
- if (dump_file[DFI_lreg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_flow_info (rtl_dump_file);
- dump_local_alloc (rtl_dump_file);
-
- close_dump_file (DFI_lreg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- ggc_collect ();
-
- timevar_push (TV_GLOBAL_ALLOC);
- open_dump_file (DFI_greg, decl);
-
- /* If optimizing, allocate remaining pseudo-regs. Do the reload
- pass fixing up any insns that are invalid. */
-
- if (optimize)
- failure = global_alloc (rtl_dump_file);
- else
- {
- build_insn_chain (insns);
- failure = reload (insns, 0);
- }
-
- timevar_pop (TV_GLOBAL_ALLOC);
-
- if (dump_file[DFI_greg].enabled)
- {
- timevar_push (TV_DUMP);
-
- dump_global_regs (rtl_dump_file);
-
- close_dump_file (DFI_greg, print_rtl_with_bb, insns);
- timevar_pop (TV_DUMP);
- }
-
- if (failure)
+ if (rest_of_handle_old_regalloc (decl, insns,
+ &rebuild_label_notes_after_reload))
goto exit_rest_of_compilation;
}
#endif
split_all_insns (0);
- cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0);
+ if (flag_branch_target_load_optimize)
+ {
+ open_dump_file (DFI_branch_target_load, decl);
+
+ branch_target_load_optimize (insns, false);
+
+ close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns);
+
+ ggc_collect ();
+ }
+
+ if (optimize)
+ cleanup_cfg (CLEANUP_EXPENSIVE);
/* On some machines, the prologue and epilogue code, or parts thereof,
can be represented as RTL. Doing so lets us schedule insns between
it and the rest of the code and also allows delayed branch
scheduling to operate in the epilogue. */
thread_prologue_and_epilogue_insns (insns);
+ epilogue_completed = 1;
if (optimize)
{
}
#endif
- if (optimize > 0 && (flag_rename_registers || flag_cprop_registers))
- {
- timevar_push (TV_RENAME_REGISTERS);
- open_dump_file (DFI_rnreg, decl);
-
- if (flag_rename_registers)
- regrename_optimize ();
- if (flag_cprop_registers)
- copyprop_hardreg_forward ();
-
- close_dump_file (DFI_rnreg, print_rtl_with_bb, insns);
- timevar_pop (TV_RENAME_REGISTERS);
- }
-
if (optimize > 0)
{
- timevar_push (TV_REORDER_BLOCKS);
- open_dump_file (DFI_bbro, decl);
-
- /* Last attempt to optimize CFG, as scheduling, peepholing and insn
- splitting possibly introduced more crossjumping opportunities. */
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE
- | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0));
+ if (flag_rename_registers || flag_cprop_registers)
+ rest_of_handle_regrename (decl, insns);
- if (flag_sched2_use_traces && flag_schedule_insns_after_reload)
- tracer ();
- if (flag_reorder_blocks)
- reorder_basic_blocks ();
- if (flag_reorder_blocks
- || (flag_sched2_use_traces && flag_schedule_insns_after_reload))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
-
- close_dump_file (DFI_bbro, print_rtl_with_bb, insns);
- timevar_pop (TV_REORDER_BLOCKS);
+ rest_of_handle_reorder_blocks (decl, insns);
}
if (flag_if_conversion2)
timevar_pop (TV_IFCVT2);
}
-#ifdef INSN_SCHEDULING
- if (optimize > 0 && flag_schedule_insns_after_reload)
- {
- timevar_push (TV_SCHED2);
- open_dump_file (DFI_sched2, decl);
+ if (flag_branch_target_load_optimize2)
+ {
+ /* Leave this a warning for now so that it is possible to experiment
+ with running this pass twice. In 3.6, we should either make this
+ an error, or use separate dump files. */
+ if (flag_branch_target_load_optimize)
+ warning ("branch target register load optimization is not intended "
+ "to be run twice");
- /* Do control and data sched analysis again,
- and write some more of the results to dump file. */
+ open_dump_file (DFI_branch_target_load, decl);
- split_all_insns (1);
+ branch_target_load_optimize (insns, true);
- if (flag_sched2_use_superblocks || flag_sched2_use_traces)
- {
- schedule_ebbs (rtl_dump_file);
- /* No liveness updating code yet, but it should be easy to do.
- reg-stack recompute the liveness when needed for now. */
- count_or_remove_death_notes (NULL, 1);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- }
- else
- schedule_insns (rtl_dump_file);
+ close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns);
- close_dump_file (DFI_sched2, print_rtl_with_bb, insns);
- timevar_pop (TV_SCHED2);
+ ggc_collect ();
+ }
- ggc_collect ();
- }
+#ifdef INSN_SCHEDULING
+ if (optimize > 0 && flag_schedule_insns_after_reload)
+ rest_of_handle_sched2 (decl, insns);
#endif
#ifdef LEAF_REGISTERS
#endif
#ifdef STACK_REGS
- timevar_push (TV_REG_STACK);
- open_dump_file (DFI_stack, decl);
-
- if (reg_to_stack (insns, rtl_dump_file) && optimize)
- {
- if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK
- | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0))
- && flag_reorder_blocks)
- {
- reorder_basic_blocks ();
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
- }
- }
-
- close_dump_file (DFI_stack, print_rtl_with_bb, insns);
- timevar_pop (TV_REG_STACK);
-
- ggc_collect ();
+ rest_of_handle_stack_regs (decl, insns);
#endif
+
compute_alignments ();
/* CFG is no longer maintained up-to-date. */
free_bb_for_insn ();
- /* If a machine dependent reorganization is needed, call it. */
-#ifdef MACHINE_DEPENDENT_REORG
- timevar_push (TV_MACH_DEP);
- open_dump_file (DFI_mach, decl);
-
- MACHINE_DEPENDENT_REORG (insns);
-
- close_dump_file (DFI_mach, print_rtl, insns);
- timevar_pop (TV_MACH_DEP);
-
- ggc_collect ();
-#endif
+ if (targetm.machine_dependent_reorg != 0)
+ rest_of_handle_machine_reorg (decl, insns);
purge_line_number_notes (insns);
cleanup_barriers ();
- /* If a scheduling pass for delayed branches is to be done,
- call the scheduling code. */
-
#ifdef DELAY_SLOTS
if (optimize > 0 && flag_delayed_branch)
- {
- timevar_push (TV_DBR_SCHED);
- open_dump_file (DFI_dbr, decl);
-
- dbr_schedule (insns, rtl_dump_file);
-
- close_dump_file (DFI_dbr, print_rtl, insns);
- timevar_pop (TV_DBR_SCHED);
-
- ggc_collect ();
- }
+ rest_of_handle_delay_slots (decl, insns);
#endif
#if defined (HAVE_ATTR_length) && !defined (STACK_REGS)
of other functions later in this translation unit. */
TREE_NOTHROW (current_function_decl) = 1;
- /* Now turn the rtl into assembler code. */
-
- timevar_push (TV_FINAL);
- {
- rtx x;
- const char *fnname;
-
- /* Get the function's name, as described by its RTL. This may be
- different from the DECL_NAME name used in the source file. */
-
- x = DECL_RTL (decl);
- if (GET_CODE (x) != MEM)
- abort ();
- x = XEXP (x, 0);
- if (GET_CODE (x) != SYMBOL_REF)
- abort ();
- fnname = XSTR (x, 0);
-
- assemble_start_function (decl, fnname);
- final_start_function (insns, asm_out_file, optimize);
- final (insns, asm_out_file, optimize, 0);
- final_end_function ();
-
-#ifdef IA64_UNWIND_INFO
- /* ??? The IA-64 ".handlerdata" directive must be issued before
- the ".endp" directive that closes the procedure descriptor. */
- output_function_exception_table ();
-#endif
-
- assemble_end_function (decl, fnname);
-
-#ifndef IA64_UNWIND_INFO
- /* Otherwise, it feels unclean to switch sections in the middle. */
- output_function_exception_table ();
-#endif
-
- if (! quiet_flag)
- fflush (asm_out_file);
-
- /* Release all memory allocated by flow. */
- free_basic_block_vars (0);
-
- /* Release all memory held by regsets now. */
- regset_release_memory ();
- }
- timevar_pop (TV_FINAL);
-
- ggc_collect ();
+ rest_of_handle_final (decl, insns);
/* Write DBX symbols if requested. */
exit_rest_of_compilation:
+ coverage_end_function ();
+
/* In case the function was not output,
don't leave any temporary anonymous types
queued up for sdb output. */
#endif
reload_completed = 0;
+ epilogue_completed = 0;
flow2_completed = 0;
no_new_pseudos = 0;
timevar_pop (TV_FINAL);
+ if ((*targetm.binds_local_p) (current_function_decl))
+ {
+ int pref = cfun->preferred_stack_boundary;
+ if (cfun->recursive_call_emit
+ && cfun->stack_alignment_needed > cfun->preferred_stack_boundary)
+ pref = cfun->stack_alignment_needed;
+ cgraph_rtl_info (current_function_decl)->preferred_incoming_stack_boundary
+ = pref;
+ }
+
/* Make sure volatile mem refs aren't considered valid operands for
arithmetic insns. We must call this here if this is a nested inline
function, since the above code leaves us in the init_recog state
timevar_pop (TV_REST_OF_COMPILATION);
}
-\f
-static void
-display_help ()
+
+/* Display help for generic options. */
+void
+display_help (void)
{
int undoc;
unsigned long i;
printf (_(" -fmessage-length=<number> Limits diagnostics messages lengths to <number> characters per line. 0 suppresses line-wrapping\n"));
printf (_(" -fdiagnostics-show-location=[once | every-line] Indicates how often source location information should be emitted, as prefix, at the beginning of diagnostics when line-wrapping\n"));
printf (_(" -ftls-model=[global-dynamic | local-dynamic | initial-exec | local-exec] Indicates the default thread-local storage code generation model\n"));
+ printf (_(" -fstack-limit-register=<register> Trap if the stack goes past <register>\n"));
+ printf (_(" -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>\n"));
+ printf (_(" -frandom-seed=<string> Make compile reproducible using <string>\n"));
+
for (i = ARRAY_SIZE (f_options); i--;)
{
W_options[i].string, _(description));
}
+ printf (_(" -Wextra Print extra (possibly unwanted) warnings\n"));
printf (_(" -Wunused Enable unused warnings\n"));
printf (_(" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n"));
printf (_(" -p Enable function profiling\n"));
display_target_options ();
}
-static void
-display_target_options ()
+/* Display help for target options. */
+void
+display_target_options (void)
{
int undoc, i;
static bool displayed = false;
/* Avoid double printing for --help --target-help. */
if (displayed)
return;
+
displayed = true;
if (ARRAY_SIZE (target_switches) > 1
}
}
}
-\f
+
/* Parse a -d... command line switch. */
-static void
-decode_d_option (arg)
- const char *arg;
+void
+decode_d_option (const char *arg)
{
int i, c, matched;
break;
case 'D': /* These are handled by the preprocessor. */
case 'I':
- break;
- case 'H':
- setup_core_dumping();
- break;
-
- default:
- matched = 0;
- for (i = 0; i < (int) DFI_MAX; ++i)
- if (c == dump_file[i].debug_switch)
- {
- dump_file[i].enabled = 1;
- matched = 1;
- }
-
- if (! matched)
- warning ("unrecognized gcc debugging option: %c", c);
- break;
- }
-}
-
-/* Parse a -f... command line switch. ARG is the value after the -f.
- It is safe to access 'ARG - 2' to generate the full switch name.
- Return the number of strings consumed. */
-
-static int
-decode_f_option (arg)
- const char *arg;
-{
- int j;
- const char *option_value = NULL;
-
- /* Search for the option in the table of binary f options. */
- for (j = ARRAY_SIZE (f_options); j--;)
- {
- if (!strcmp (arg, f_options[j].string))
- {
- *f_options[j].variable = f_options[j].on_value;
- return 1;
- }
-
- if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-'
- && ! strcmp (arg + 3, f_options[j].string))
- {
- *f_options[j].variable = ! f_options[j].on_value;
- return 1;
- }
- }
-
- if (!strcmp (arg, "fast-math"))
- set_fast_math_flags (1);
- else if (!strcmp (arg, "no-fast-math"))
- set_fast_math_flags (0);
- else if ((option_value = skip_leading_substring (arg, "inline-limit-"))
- || (option_value = skip_leading_substring (arg, "inline-limit=")))
- {
- int val =
- read_integral_parameter (option_value, arg - 2,
- MAX_INLINE_INSNS);
- set_param_value ("max-inline-insns", val);
- }
- else if ((option_value = skip_leading_substring (arg, "tls-model=")))
- {
- if (strcmp (option_value, "global-dynamic") == 0)
- flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
- else if (strcmp (option_value, "local-dynamic") == 0)
- flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC;
- else if (strcmp (option_value, "initial-exec") == 0)
- flag_tls_default = TLS_MODEL_INITIAL_EXEC;
- else if (strcmp (option_value, "local-exec") == 0)
- flag_tls_default = TLS_MODEL_LOCAL_EXEC;
- else
- warning ("`%s': unknown tls-model option", arg - 2);
- }
-#ifdef INSN_SCHEDULING
- else if ((option_value = skip_leading_substring (arg, "sched-verbose=")))
- fix_sched_param ("verbose", option_value);
-#endif
- else if ((option_value = skip_leading_substring (arg, "fixed-")))
- fix_register (option_value, 1, 1);
- else if ((option_value = skip_leading_substring (arg, "call-used-")))
- fix_register (option_value, 0, 1);
- else if ((option_value = skip_leading_substring (arg, "call-saved-")))
- fix_register (option_value, 0, 0);
- else if ((option_value = skip_leading_substring (arg, "align-loops=")))
- align_loops = read_integral_parameter (option_value, arg - 2, align_loops);
- else if ((option_value = skip_leading_substring (arg, "align-functions=")))
- align_functions
- = read_integral_parameter (option_value, arg - 2, align_functions);
- else if ((option_value = skip_leading_substring (arg, "align-jumps=")))
- align_jumps = read_integral_parameter (option_value, arg - 2, align_jumps);
- else if ((option_value = skip_leading_substring (arg, "align-labels=")))
- align_labels
- = read_integral_parameter (option_value, arg - 2, align_labels);
- else if ((option_value
- = skip_leading_substring (arg, "stack-limit-register=")))
- {
- int reg = decode_reg_name (option_value);
- if (reg < 0)
- error ("unrecognized register name `%s'", option_value);
- else
- stack_limit_rtx = gen_rtx_REG (Pmode, reg);
- }
- else if ((option_value
- = skip_leading_substring (arg, "stack-limit-symbol=")))
- {
- const char *nm;
- nm = ggc_strdup (option_value);
- stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm);
- }
- else if ((option_value
- = skip_leading_substring (arg, "message-length=")))
- output_set_maximum_length
- (&global_dc->buffer, read_integral_parameter
- (option_value, arg - 2, diagnostic_line_cutoff (global_dc)));
- else if ((option_value
- = skip_leading_substring (arg, "diagnostics-show-location=")))
- {
- if (!strcmp (option_value, "once"))
- diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
- else if (!strcmp (option_value, "every-line"))
- diagnostic_prefixing_rule (global_dc)
- = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE;
- else
- error ("unrecognized option `%s'", arg - 2);
- }
- else if (!strcmp (arg, "no-stack-limit"))
- stack_limit_rtx = NULL_RTX;
- else if (!strcmp (arg, "preprocessed"))
- /* Recognize this switch but do nothing. This prevents warnings
- about an unrecognized switch if cpplib has not been linked in. */
- ;
- else
- return 0;
-
- return 1;
-}
-
-/* Parse a -W... command line switch. ARG is the value after the -W.
- It is safe to access 'ARG - 2' to generate the full switch name.
- Return the number of strings consumed. */
-
-static int
-decode_W_option (arg)
- const char *arg;
-{
- const char *option_value = NULL;
- int j;
-
- /* Search for the option in the table of binary W options. */
-
- for (j = ARRAY_SIZE (W_options); j--;)
- {
- if (!strcmp (arg, W_options[j].string))
- {
- *W_options[j].variable = W_options[j].on_value;
- return 1;
- }
-
- if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-'
- && ! strcmp (arg + 3, W_options[j].string))
- {
- *W_options[j].variable = ! W_options[j].on_value;
- return 1;
- }
- }
-
- if ((option_value = skip_leading_substring (arg, "id-clash-")))
- warning ("-Wid-clash-LEN is no longer supported");
- else if ((option_value = skip_leading_substring (arg, "larger-than-")))
- {
- larger_than_size = read_integral_parameter (option_value, arg - 2, -1);
+ break;
+ case 'H':
+ setup_core_dumping();
+ break;
- warn_larger_than = larger_than_size != -1;
- }
- else if (!strcmp (arg, "unused"))
- {
- set_Wunused (1);
- }
- else if (!strcmp (arg, "no-unused"))
- {
- set_Wunused (0);
- }
- else if (!strcmp (arg, "extra"))
- {
- /* We save the value of warn_uninitialized, since if they put
- -Wuninitialized on the command line, we need to generate a
- warning about not using it without also specifying -O. */
- if (warn_uninitialized != 1)
- warn_uninitialized = 2;
- }
- else
- return 0;
+ default:
+ matched = 0;
+ for (i = 0; i < (int) DFI_MAX; ++i)
+ if (c == dump_file[i].debug_switch)
+ {
+ dump_file[i].enabled = 1;
+ matched = 1;
+ }
- return 1;
+ if (! matched)
+ warning ("unrecognized gcc debugging option: %c", c);
+ break;
+ }
}
+/* Indexed by enum debug_info_type. */
+const char *const debug_type_names[] =
+{
+ "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms"
+};
+
/* Parse a -g... command line switch. ARG is the value after the -g.
It is safe to access 'ARG - 2' to generate the full switch name.
Return the number of strings consumed. */
-static int
-decode_g_option (arg)
- const char *arg;
+void
+decode_g_option (const char *arg)
{
static unsigned level = 0;
/* A lot of code assumes write_symbols == NO_DEBUG if the
-g and -ggdb don't explicitly set the debugging format so
-gdwarf -g3 is equivalent to -gdwarf3. */
static int type_explicitly_set_p = 0;
- /* Indexed by enum debug_info_type. */
- static const char *const debug_type_names[] =
- {
- "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms"
- };
/* The maximum admissible debug level value. */
static const unsigned max_debug_level = 3;
}
if (! da->arg)
- return 0;
-
- return 1;
+ warning ("`-g%s': unknown or unsupported -g option", arg);
}
-/* Decode the first argument in the argv as a language-independent option.
- Return the number of strings consumed. */
-
-static unsigned int
-independent_decode_option (argc, argv)
- int argc;
- char **argv;
-{
- char *arg = argv[0];
-
- if (arg[0] != '-' || arg[1] == 0)
- {
- if (arg[0] == '+')
- return 0;
-
- filename = arg;
-
- return 1;
- }
-
- arg++;
-
- if (!strcmp (arg, "-help"))
- {
- display_help ();
- exit_after_options = 1;
- }
-
- if (!strcmp (arg, "-target-help"))
- {
- display_target_options ();
- exit_after_options = 1;
- }
-
- if (!strcmp (arg, "-version"))
- {
- print_version (stderr, "");
- exit_after_options = 1;
- }
-
- /* Handle '--param <name>=<value>'. */
- if (strcmp (arg, "-param") == 0)
- {
- char *equal;
-
- if (argc == 1)
- {
- error ("-param option missing argument");
- return 1;
- }
-
- /* Get the '<name>=<value>' parameter. */
- arg = argv[1];
- /* Look for the `='. */
- equal = strchr (arg, '=');
- if (!equal)
- error ("invalid --param option: %s", arg);
- else
- {
- int val;
-
- /* Zero out the `=' sign so that we get two separate strings. */
- *equal = '\0';
- /* Figure out what value is specified. */
- val = read_integral_parameter (equal + 1, NULL, INVALID_PARAM_VAL);
- if (val != INVALID_PARAM_VAL)
- set_param_value (arg, val);
- else
- error ("invalid parameter value `%s'", equal + 1);
- }
-
- return 2;
- }
-
- if (*arg == 'Y')
- arg++;
-
- switch (*arg)
- {
- default:
- return 0;
-
- case 'O':
- /* Already been treated in main (). Do nothing. */
- break;
-
- case 'm':
- set_target_switch (arg + 1);
- break;
-
- case 'f':
- return decode_f_option (arg + 1);
-
- case 'g':
- return decode_g_option (arg + 1);
-
- case 'd':
- if (!strcmp (arg, "dumpbase"))
- {
- if (argc == 1)
- return 0;
-
- if (argv[1][0])
- dump_base_name = argv[1];
-
- return 2;
- }
- else
- decode_d_option (arg + 1);
- break;
-
- case 'p':
- if (!strcmp (arg, "pedantic"))
- pedantic = 1;
- else if (!strcmp (arg, "pedantic-errors"))
- flag_pedantic_errors = pedantic = 1;
- else if (arg[1] == 0)
- profile_flag = 1;
- else
- return 0;
- break;
-
- case 'q':
- if (!strcmp (arg, "quiet"))
- quiet_flag = 1;
- else
- return 0;
- break;
-
- case 'v':
- if (!strcmp (arg, "version"))
- version_flag = 1;
- else
- return 0;
- break;
-
- case 'w':
- if (arg[1] == 0)
- inhibit_warnings = 1;
- else
- return 0;
- break;
-
- case 'W':
- if (arg[1] == 0)
- {
- extra_warnings = 1;
- /* We save the value of warn_uninitialized, since if they put
- -Wuninitialized on the command line, we need to generate a
- warning about not using it without also specifying -O. */
- if (warn_uninitialized != 1)
- warn_uninitialized = 2;
- }
- else
- return decode_W_option (arg + 1);
- break;
-
- case 'a':
- if (!strncmp (arg, "aux-info", 8))
- {
- if (arg[8] == '\0')
- {
- if (argc == 1)
- return 0;
-
- aux_info_file_name = argv[1];
- flag_gen_aux_info = 1;
- return 2;
- }
- else if (arg[8] == '=')
- {
- aux_info_file_name = arg + 9;
- flag_gen_aux_info = 1;
- }
- else
- return 0;
- }
- else if (!strcmp (arg, "auxbase"))
- {
- if (argc == 1)
- return 0;
-
- if (argv[1][0])
- aux_base_name = argv[1];
-
- return 2;
- }
- else if (!strcmp (arg, "auxbase-strip"))
- {
- if (argc == 1)
- return 0;
-
- if (argv[1][0])
- {
- strip_off_ending (argv[1], strlen (argv[1]));
- if (argv[1][0])
- aux_base_name = argv[1];
- }
-
- return 2;
- }
- else
- return 0;
- break;
-
- case 'o':
- if (arg[1] == 0)
- {
- if (argc == 1)
- return 0;
-
- asm_file_name = argv[1];
- return 2;
- }
- return 0;
-
- case 'G':
- {
- int g_switch_val;
- int return_val;
-
- if (arg[1] == 0)
- {
- if (argc == 1)
- return 0;
-
- g_switch_val = read_integral_parameter (argv[1], 0, -1);
- return_val = 2;
- }
- else
- {
- g_switch_val = read_integral_parameter (arg + 1, 0, -1);
- return_val = 1;
- }
-
- if (g_switch_val == -1)
- return_val = 0;
- else
- {
- g_switch_set = TRUE;
- g_switch_value = g_switch_val;
- }
-
- return return_val;
- }
- }
-
- return 1;
-}
-\f
/* Decode -m switches. */
/* Decode the switch -mNAME. */
-static void
-set_target_switch (name)
- const char *name;
+void
+set_target_switch (const char *name)
{
size_t j;
int valid_target_option = 0;
for (j = 0; j < ARRAY_SIZE (target_options); j++)
{
int len = strlen (target_options[j].prefix);
- if (!strncmp (target_options[j].prefix, name, len))
+ if (target_options[j].value)
+ {
+ if (!strcmp (target_options[j].prefix, name))
+ {
+ *target_options[j].variable = target_options[j].value;
+ valid_target_option = 1;
+ }
+ }
+ else
{
- *target_options[j].variable = name + len;
- valid_target_option = 1;
+ if (!strncmp (target_options[j].prefix, name, len))
+ {
+ *target_options[j].variable = name + len;
+ valid_target_option = 1;
+ }
}
}
#endif
if (!valid_target_option)
error ("invalid option `%s'", name);
}
-\f
+
/* Print version information to FILE.
Each line begins with INDENT (for the case where FILE is the
assembler output file). */
-static void
-print_version (file, indent)
- FILE *file;
- const char *indent;
+void
+print_version (FILE *file, const char *indent)
{
#ifndef __VERSION__
#define __VERSION__ "[?]"
other code will catch a disk full though. */
static int
-print_single_switch (file, pos, max, indent, sep, term, type, name)
- FILE *file;
- int pos, max;
- const char *indent, *sep, *term, *type, *name;
+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. */
Each switch is separated from the next by SEP. */
static void
-print_switch_values (file, pos, max, indent, sep, term)
- FILE *file;
- int pos, max;
- const char *indent, *sep, *term;
+print_switch_values (FILE *file, int pos, int max,
+ const char *indent, const char *sep, const char *term)
{
size_t j;
- char **p;
+ 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. Of
+ course, the string may never be used, but we can't tell that at
+ this point in the compile. */
+ default_flag_random_seed ();
/* Print the options as passed. */
fprintf (file, "%s", term);
}
-\f
+
/* 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 (name)
- const char *name;
+init_asm_output (const char *name)
{
if (name == NULL && asm_file_name == 0)
asm_out_file = stdout;
else
asm_out_file = fopen (asm_file_name, "w+");
if (asm_out_file == 0)
- fatal_io_error ("can't open %s for writing", asm_file_name);
+ fatal_error ("can't open %s for writing: %m", asm_file_name);
}
#ifdef IO_BUFFER_SIZE
if (!flag_syntax_only)
{
-#ifdef ASM_FILE_START
- ASM_FILE_START (asm_out_file);
-#endif
+ targetm.asm_out.file_start ();
#ifdef ASM_COMMENT_START
if (flag_verbose_asm)
#endif
}
}
-\f
+
/* 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 (argv0)
- char *argv0;
+general_init (const char *argv0)
{
- char *p;
+ const char *p;
p = argv0 + strlen (argv0);
while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
init_ggc ();
init_stringpool ();
init_ttree ();
-}
-\f
-/* Parse command line options and set default flag values, called
- after language-independent option-independent initialization. Do
- minimal options processing. Outputting diagnostics is OK, but GC
- and identifier hashtables etc. are not initialized yet.
-
- Return nonzero to suppress compiler back end initialization. */
-static void
-parse_options_and_default_flags (argc, argv)
- int argc;
- char **argv;
-{
- int i;
-
- /* Save in case md file wants to emit args as a comment. */
- save_argc = argc;
- save_argv = argv;
/* Initialize register usage now so switches may override. */
init_reg_sets ();
/* This must be done after add_params but before argument processing. */
init_ggc_heuristics();
-
- /* Perform language-specific options initialization. */
- (*lang_hooks.init_options) ();
-
- /* Scan to see what optimization level has been specified. That will
- determine the default value of many flags. */
- for (i = 1; i < argc; i++)
- {
- if (!strcmp (argv[i], "-O"))
- {
- optimize = 1;
- optimize_size = 0;
- }
- else if (argv[i][0] == '-' && argv[i][1] == 'O')
- {
- /* Handle -Os, -O2, -O3, -O69, ... */
- char *p = &argv[i][2];
-
- if ((p[0] == 's') && (p[1] == 0))
- {
- optimize_size = 1;
-
- /* Optimizing for size forces optimize to be 2. */
- optimize = 2;
- }
- else
- {
- const int optimize_val = read_integral_parameter (p, p - 2, -1);
- if (optimize_val != -1)
- {
- optimize = optimize_val;
- optimize_size = 0;
- }
- }
- }
- }
-
- if (!optimize)
- {
- flag_merge_constants = 0;
- }
-
- if (optimize >= 1)
- {
- flag_defer_pop = 1;
- flag_thread_jumps = 1;
-#ifdef DELAY_SLOTS
- flag_delayed_branch = 1;
-#endif
-#ifdef CAN_DEBUG_WITHOUT_FP
- flag_omit_frame_pointer = 1;
-#endif
- flag_guess_branch_prob = 1;
- flag_cprop_registers = 1;
- flag_loop_optimize = 1;
- flag_crossjumping = 1;
- flag_if_conversion = 1;
- flag_if_conversion2 = 1;
- }
-
- if (optimize >= 2)
- {
- flag_optimize_sibling_calls = 1;
- flag_cse_follow_jumps = 1;
- flag_cse_skip_blocks = 1;
- flag_gcse = 1;
- flag_expensive_optimizations = 1;
- flag_strength_reduce = 1;
- flag_rerun_cse_after_loop = 1;
- flag_rerun_loop_opt = 1;
- flag_caller_saves = 1;
- flag_force_mem = 1;
- flag_peephole2 = 1;
-#ifdef INSN_SCHEDULING
- flag_schedule_insns = 1;
- flag_schedule_insns_after_reload = 1;
-#endif
- flag_regmove = 1;
- flag_strict_aliasing = 1;
- flag_delete_null_pointer_checks = 1;
- flag_reorder_blocks = 1;
- flag_reorder_functions = 1;
- }
-
- if (optimize >= 3)
- {
- flag_inline_functions = 1;
- flag_rename_registers = 1;
- flag_unswitch_loops = 1;
- }
-
- if (optimize < 2 || optimize_size)
- {
- align_loops = 1;
- align_jumps = 1;
- align_labels = 1;
- align_functions = 1;
-
- /* Don't reorder blocks when optimizing for size because extra
- jump insns may be created; also barrier may create extra padding.
-
- More correctly we should have a block reordering mode that tried
- to minimize the combined size of all the jumps. This would more
- or less automatically remove extra jumps, but would also try to
- use more short jumps instead of long jumps. */
- flag_reorder_blocks = 0;
- }
-
- /* Initialize whether `char' is signed. */
- flag_signed_char = DEFAULT_SIGNED_CHAR;
-#ifdef DEFAULT_SHORT_ENUMS
- /* Initialize how much space enums occupy, by default. */
- flag_short_enums = DEFAULT_SHORT_ENUMS;
-#endif
-
- /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
- modify it. */
- target_flags = 0;
- set_target_switch ("");
-
- /* Unwind tables are always present in an ABI-conformant IA-64
- object file, so the default should be ON. */
-#ifdef IA64_UNWIND_INFO
- flag_unwind_tables = IA64_UNWIND_INFO;
-#endif
-
-#ifdef OPTIMIZATION_OPTIONS
- /* Allow default optimizations to be specified on a per-machine basis. */
- OPTIMIZATION_OPTIONS (optimize, optimize_size);
-#endif
-
- /* Perform normal command line switch decoding. */
- for (i = 1; i < argc;)
- {
- int lang_processed;
- int indep_processed;
-
- /* Give the language a chance to decode the option for itself. */
- lang_processed = (*lang_hooks.decode_option) (argc - i, argv + i);
-
- if (lang_processed >= 0)
- /* Now see if the option also has a language independent meaning.
- Some options are both language specific and language independent,
- eg --help. */
- indep_processed = independent_decode_option (argc - i, argv + i);
- else
- {
- lang_processed = -lang_processed;
- indep_processed = 0;
- }
-
- if (lang_processed || indep_processed)
- i += MAX (lang_processed, indep_processed);
- else
- {
- const char *option = NULL;
- const char *lang = NULL;
- unsigned int j;
-
- /* It is possible that the command line switch is not valid for the
- current language, but it is valid for another language. In order
- to be compatible with previous versions of the compiler (which
- did not issue an error message in this case) we check for this
- possibility here. If we do find a match, then if extra_warnings
- is set we generate a warning message, otherwise we will just
- ignore the option. */
- for (j = 0; j < ARRAY_SIZE (documented_lang_options); j++)
- {
- option = documented_lang_options[j].option;
-
- if (option == NULL)
- lang = documented_lang_options[j].description;
- else if (! strncmp (argv[i], option, strlen (option)))
- break;
- }
-
- if (j != ARRAY_SIZE (documented_lang_options))
- {
- if (extra_warnings)
- {
- warning ("ignoring command line option '%s'", argv[i]);
- if (lang)
- warning
- ("(it is valid for %s but not the selected language)",
- lang);
- }
- }
- else if (argv[i][0] == '-' && argv[i][1] == 'g')
- warning ("`%s': unknown or unsupported -g option", &argv[i][2]);
- else
- error ("unrecognized option `%s'", argv[i]);
-
- i++;
- }
- }
-
- if (flag_no_inline == 2)
- flag_no_inline = 0;
- else
- flag_really_no_inline = flag_no_inline;
-
- /* Set flag_no_inline before the post_options () hook. The C front
- ends use it to determine tree inlining defaults. FIXME: such
- code should be lang-independent when all front ends use tree
- inlining, in which case it, and this condition, should be moved
- to the top of process_options() instead. */
- if (optimize == 0)
- {
- /* Inlining does not work if not optimizing,
- so force it not to be done. */
- flag_no_inline = 1;
- warn_inline = 0;
-
- /* The c_decode_option function and decode_option hook set
- this to `2' if -Wall is used, so we can avoid giving out
- lots of errors for people who don't realize what -Wall does. */
- if (warn_uninitialized == 1)
- warning ("-Wuninitialized is not supported without -O");
- }
-
- if (flag_really_no_inline == 2)
- flag_really_no_inline = flag_no_inline;
}
-\f
+
/* Process the options that have been parsed. */
static void
-process_options ()
+process_options (void)
{
+ /* 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);
+ input_filename = main_input_filename;
+
#ifdef OVERRIDE_OPTIONS
/* Some machines may reject certain combinations of options. */
OVERRIDE_OPTIONS;
/* Set aux_base_name if not already set. */
if (aux_base_name)
;
- else if (filename)
+ else if (main_input_filename)
{
- char *name = xstrdup (lbasename (filename));
-
+ char *name = xstrdup (lbasename (main_input_filename));
+
strip_off_ending (name, strlen (name));
aux_base_name = name;
}
print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
}
- if (! quiet_flag || flag_detailed_statistics)
- time_report = 1;
-
if (flag_syntax_only)
{
write_symbols = NO_DEBUG;
{
aux_info_file = fopen (aux_info_file_name, "w");
if (aux_info_file == 0)
- fatal_io_error ("can't open %s", aux_info_file_name);
+ fatal_error ("can't open %s: %m", aux_info_file_name);
}
if (! targetm.have_named_sections)
if (flag_signaling_nans)
flag_trapping_math = 1;
}
-\f
+
/* Initialize the compiler back end. */
static void
-backend_init ()
+backend_init (void)
{
/* init_emit_once uses reg_raw_mode and therefore must be called
after init_regs which initialized reg_raw_mode. */
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 */
+ /* Enable line number info for traceback. */
|| debug_info_level > DINFO_LEVEL_NONE
#endif
|| flag_test_coverage
init_caller_save ();
expand_dummy_function_end ();
}
-\f
+
/* Language-dependent initialization. Returns nonzero on success. */
static int
-lang_dependent_init (name)
- const char *name;
+lang_dependent_init (const char *name)
{
if (dump_base_name == 0)
dump_base_name = name ? name : "gccdump";
- /* Front-end initialization. This hook can assume that GC,
- identifier hashes etc. are set up, but debug initialization is
- not done yet. This routine must return the original filename
- (e.g. foo.i -> foo.c) so can correctly initialize debug output. */
- name = (*lang_hooks.init) (name);
- if (name == NULL)
+ /* Other front-end initialization. */
+ if ((*lang_hooks.init) () == 0)
return 0;
- main_input_filename = input_filename = name;
init_asm_output (name);
/* These create various _DECL nodes, so need to be called after the
init_expr_once ();
expand_dummy_function_end ();
- /* Put an entry on the input file stack for the main input file. */
- push_srcloc (input_filename, 0);
-
/* If dbx symbol table desired, initialize writing it and output the
predefined types. */
timevar_push (TV_SYMOUT);
return 1;
}
-\f
+
/* Clean up: close opened files, etc. */
static void
-finalize ()
+finalize (void)
{
/* Close the dump files. */
if (flag_gen_aux_info)
if (asm_out_file)
{
if (ferror (asm_out_file) != 0)
- fatal_io_error ("error writing to %s", asm_file_name);
+ fatal_error ("error writing to %s: %m", asm_file_name);
if (fclose (asm_out_file) != 0)
- fatal_io_error ("error closing %s", asm_file_name);
+ fatal_error ("error closing %s: %m", asm_file_name);
}
/* Do whatever is necessary to finish printing the graphs. */
/* Language-specific end of compilation actions. */
(*lang_hooks.finish) ();
}
-\f
+
/* Initialize the compiler, and compile the input file. */
static void
-do_compile (no_backend)
- int no_backend;
+do_compile (void)
{
- /* We cannot start timing until after options are processed since that
- says if we run timers or not. */
- init_timevar ();
+ /* 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);
- /* Set up the back-end if requested. */
- if (!no_backend)
- backend_init ();
+ process_options ();
+
+ /* Don't do any more if an error has already occurred. */
+ if (!errorcount)
+ {
+ /* Set up the back-end if requested. */
+ if (!no_backend)
+ backend_init ();
- /* Language-dependent initialization. Returns true on success. */
- if (lang_dependent_init (filename))
- compile_file ();
+ /* Language-dependent initialization. Returns true on success. */
+ if (lang_dependent_init (main_input_filename))
+ compile_file ();
- finalize ();
+ finalize ();
+ }
/* Stop timing and print the times. */
timevar_stop (TV_TOTAL);
timevar_print (stderr);
}
-\f
+
/* Entry point of cc1, cc1plus, jc1, f771, etc.
Decode command args, then call compile_file.
Exit code is FATAL_EXIT_CODE if can't open files or if there were
It is not safe to call this function more than once. */
int
-toplev_main (argc, argv)
- int argc;
- char **argv;
+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. */
- parse_options_and_default_flags (argc, argv);
+ decode_options (argc, argv);
/* Exit early if we can (e.g. -help). */
if (!exit_after_options)
- {
- /* All command line options have been parsed; allow the front
- end to perform consistency checks, etc. */
- bool no_backend = (*lang_hooks.post_options) ();
-
- /* The bulk of command line switch processing. */
- process_options ();
-
- /* Don't do any more if an error has already occurred. */
- if (!errorcount)
- do_compile (no_backend);
- }
+ do_compile ();
if (errorcount || sorrycount)
return (FATAL_EXIT_CODE);
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