Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
/* This is the top level of cc1/c++.
It parses command args, opens files, invokes the various passes
#include "tm_p.h"
#include "flags.h"
#include "insn-attr.h"
-#include "insn-codes.h"
#include "insn-config.h"
#include "hard-reg-set.h"
#include "recog.h"
#include "diagnostic.h"
#include "ssa.h"
#include "params.h"
-
-#ifndef ACCUMULATE_OUTGOING_ARGS
-#define ACCUMULATE_OUTGOING_ARGS 0
-#endif
-
-#ifdef DWARF_DEBUGGING_INFO
-#include "dwarfout.h"
-#endif
+#include "reload.h"
+#include "dwarf2asm.h"
+#include "integrate.h"
+#include "debug.h"
+#include "target.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
#endif
#ifdef XCOFF_DEBUGGING_INFO
-#include "xcoffout.h"
+#include "xcoffout.h" /* Needed for external data
+ declarations for e.g. AIX 4.x. */
#endif
\f
#ifdef VMS
static void float_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
static void crash_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
-#ifdef ASM_IDENTIFY_LANGUAGE
-/* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */
-static void output_lang_identify PARAMS ((FILE *)) ATTRIBUTE_UNUSED;
-#endif
+static void set_float_handler PARAMS ((jmp_buf));
static void compile_file PARAMS ((const char *));
static void display_help PARAMS ((void));
static void display_target_options PARAMS ((void));
const char *progname;
-/* Copy of arguments to main. */
+/* Copy of arguments to toplev_main. */
int save_argc;
char **save_argv;
\f
extern int target_flags;
+/* Debug hooks - dependent upon command line options. */
+
+struct gcc_debug_hooks *debug_hooks;
+
/* Describes a dump file. */
struct dump_file_info
{
DFI_rtl,
DFI_sibling,
+ DFI_eh,
DFI_jump,
- DFI_cse,
- DFI_addressof,
DFI_ssa,
- DFI_dce,
+ DFI_ssa_ccp,
+ DFI_ssa_dce,
DFI_ussa,
+ DFI_cse,
+ DFI_addressof,
DFI_gcse,
DFI_loop,
DFI_cse2,
DFI_rnreg,
DFI_ce2,
DFI_sched2,
+ DFI_stack,
DFI_bbro,
- DFI_jump2,
DFI_mach,
DFI_dbr,
- DFI_stack,
DFI_MAX
};
Remaining -d letters:
- " h o q u "
- " H K OPQ TUVW YZ"
+ " o q u "
+ " H JK OPQ TUV YZ"
*/
struct dump_file_info dump_file[DFI_MAX] =
{
{ "rtl", 'r', 0, 0, 0 },
{ "sibling", 'i', 0, 0, 0 },
+ { "eh", 'h', 0, 0, 0 },
{ "jump", 'j', 0, 0, 0 },
- { "cse", 's', 0, 0, 0 },
- { "addressof", 'F', 0, 0, 0 },
{ "ssa", 'e', 1, 0, 0 },
- { "dce", 'X', 1, 0, 0 },
+ { "ssaccp", 'W', 1, 0, 0 },
+ { "ssadce", 'X', 1, 0, 0 },
{ "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */
+ { "cse", 's', 0, 0, 0 },
+ { "addressof", 'F', 0, 0, 0 },
{ "gcse", 'G', 1, 0, 0 },
{ "loop", 'L', 1, 0, 0 },
{ "cse2", 't', 1, 0, 0 },
{ "rnreg", 'n', 1, 0, 0 },
{ "ce2", 'E', 1, 0, 0 },
{ "sched2", 'R', 1, 0, 0 },
+ { "stack", 'k', 1, 0, 0 },
{ "bbro", 'B', 1, 0, 0 },
- { "jump2", 'J', 1, 0, 0 },
{ "mach", 'M', 1, 0, 0 },
{ "dbr", 'd', 0, 0, 0 },
- { "stack", 'k', 1, 0, 0 },
};
static int open_dump_file PARAMS ((enum dump_file_index, tree));
int rtl_dump_and_exit;
int flag_print_asm_name;
-static int flag_print_mem;
static int version_flag;
static char *filename;
enum graph_dump_types graph_dump_format;
int optimize_size = 0;
-/* Number of error messages and warning messages so far. */
-
-int errorcount = 0;
-int warningcount = 0;
-int sorrycount = 0;
-
/* Nonzero if we should exit after parsing options. */
static int exit_after_options = 0;
int flag_no_peephole = 0;
-/* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
- operations in the interest of optimization. For example it allows
- GCC to assume arguments to sqrt are nonnegative numbers, allowing
- faster code for sqrt to be generated. */
-
-int flag_fast_math = 0;
-
/* Nonzero allows GCC to optimize sibling and tail recursive calls. */
int flag_optimize_sibling_calls = 0;
/* Nonzero means the front end generally wants `errno' maintained by math
- operations, like built-in SQRT, unless overridden by flag_fast_math. */
+ operations, like built-in SQRT. */
int flag_errno_math = 1;
+/* Nonzero means that unsafe floating-point math optimizations are allowed
+ for the sake of speed. IEEE compliance is not guaranteed, and operations
+ are allowed to assume that their arguments and results are "normal"
+ (e.g., nonnegative for SQRT). */
+
+int flag_unsafe_math_optimizations = 0;
+
+/* Zero means that floating-point math operations cannot generate a
+ (user-visible) trap. This is the case, for example, in nonstop
+ IEEE 754 arithmetic. */
+
+int flag_trapping_math = 1;
+
/* 0 means straightforward implementation of complex divide acceptable.
1 means wide ranges of inputs must work for complex divide.
2 means C99-like requirements for complex divide (not yet implemented). */
static int flag_delete_null_pointer_checks;
+/* Nonzero means to do the enhanced load motion during gcse, which trys
+ to hoist loads by not killing them when a store to the same location
+ is seen. */
+
+int flag_gcse_lm = 1;
+
+/* Nonzero means to perform store motion after gcse, which will try to
+ move stores closer to the exit block. Its not very effective without
+ flag_gcse_lm. */
+
+int flag_gcse_sm = 1;
+
/* Nonzero means to rerun cse after loop optimization. This increases
compilation time about 20% and picks up a few more common expressions. */
int flag_exceptions;
-/* Nonzero means use the new model for exception handling. Replaces
- -DNEW_EH_MODEL as a compile option. */
-
-int flag_new_exceptions = 1;
-
/* Nonzero means generate frame unwind info table when supported. */
int flag_unwind_tables = 0;
/* Enable SSA. */
int flag_ssa = 0;
-/* Enable dead code elimination. */
-int flag_dce = 0;
+/* Enable ssa conditional constant propagation. */
+int flag_ssa_ccp = 0;
+
+/* Enable ssa aggressive dead code elimination. */
+int flag_ssa_dce = 0;
/* Tag all structures with __attribute__(packed). */
int flag_pack_struct = 0;
debug_args[] =
{
{ "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS,
- "Generate default debug format output" },
- { "gdb", NO_DEBUG, 1, "Generate default extended debug format output" },
+ N_("Generate debugging info in default format") },
+ { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") },
#ifdef DBX_DEBUGGING_INFO
- { "stabs", DBX_DEBUG, 0, "Generate STABS format debug output" },
- { "stabs+", DBX_DEBUG, 1, "Generate extended STABS format debug output" },
+ { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") },
+ { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") },
#endif
#ifdef DWARF_DEBUGGING_INFO
- { "dwarf", DWARF_DEBUG, 0, "Generate DWARF-1 format debug output"},
+ { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") },
{ "dwarf+", DWARF_DEBUG, 1,
- "Generated extended DWARF-1 format debug output" },
+ N_("Generate extended DWARF-1 format debug info") },
#endif
#ifdef DWARF2_DEBUGGING_INFO
- { "dwarf-2", DWARF2_DEBUG, 0, "Enable DWARF-2 debug output" },
+ { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") },
#endif
#ifdef XCOFF_DEBUGGING_INFO
- { "xcoff", XCOFF_DEBUG, 0, "Generate XCOFF format debug output" },
- { "xcoff+", XCOFF_DEBUG, 1, "Generate extended XCOFF format debug output" },
+ { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") },
+ { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") },
#endif
#ifdef SDB_DEBUGGING_INFO
- { "coff", SDB_DEBUG, 0, "Generate COFF format debug output" },
+ { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") },
#endif
{ 0, 0, 0, 0 }
};
static const param_info lang_independent_params[] = {
#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \
- { OPTION, DEFAULT },
+ { OPTION, DEFAULT, HELP },
#include "params.def"
#undef DEFPARAM
- { NULL, 0 }
+ { NULL, 0, NULL }
};
/* A default for same. */
lang_independent_options f_options[] =
{
{"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1,
- "Perform DWARF2 duplicate elimination"},
+ N_("Perform DWARF2 duplicate elimination") },
{"float-store", &flag_float_store, 1,
- "Do not store floats in registers" },
+ N_("Do not store floats in registers") },
{"volatile", &flag_volatile, 1,
- "Consider all mem refs through pointers as volatile"},
+ N_("Consider all mem refs through pointers as volatile") },
{"volatile-global", &flag_volatile_global, 1,
- "Consider all mem refs to global data to be volatile" },
+ N_("Consider all mem refs to global data to be volatile") },
{"volatile-static", &flag_volatile_static, 1,
- "Consider all mem refs to static data to be volatile" },
+ N_("Consider all mem refs to static data to be volatile") },
{"defer-pop", &flag_defer_pop, 1,
- "Defer popping functions args from stack until later" },
+ N_("Defer popping functions args from stack until later") },
{"omit-frame-pointer", &flag_omit_frame_pointer, 1,
- "When possible do not generate stack frames"},
+ N_("When possible do not generate stack frames") },
{"optimize-sibling-calls", &flag_optimize_sibling_calls, 1,
- "Optimize sibling and tail recursive calls" },
+ N_("Optimize sibling and tail recursive calls") },
{"cse-follow-jumps", &flag_cse_follow_jumps, 1,
- "When running CSE, follow jumps to their targets" },
+ N_("When running CSE, follow jumps to their targets") },
{"cse-skip-blocks", &flag_cse_skip_blocks, 1,
- "When running CSE, follow conditional jumps" },
+ N_("When running CSE, follow conditional jumps") },
{"expensive-optimizations", &flag_expensive_optimizations, 1,
- "Perform a number of minor, expensive optimisations" },
+ N_("Perform a number of minor, expensive optimisations") },
{"thread-jumps", &flag_thread_jumps, 1,
- "Perform jump threading optimisations"},
+ N_("Perform jump threading optimisations") },
{"strength-reduce", &flag_strength_reduce, 1,
- "Perform strength reduction optimisations" },
+ N_("Perform strength reduction optimisations") },
{"unroll-loops", &flag_unroll_loops, 1,
- "Perform loop unrolling when iteration count is known" },
+ N_("Perform loop unrolling when iteration count is known") },
{"unroll-all-loops", &flag_unroll_all_loops, 1,
- "Perform loop unrolling for all loops" },
+ N_("Perform loop unrolling for all loops") },
{"move-all-movables", &flag_move_all_movables, 1,
- "Force all loop invariant computations out of loops" },
+ N_("Force all loop invariant computations out of loops") },
{"reduce-all-givs", &flag_reduce_all_givs, 1,
- "Strength reduce all loop general induction variables" },
+ N_("Strength reduce all loop general induction variables") },
{"writable-strings", &flag_writable_strings, 1,
- "Store strings in writable data section" },
+ N_("Store strings in writable data section") },
{"peephole", &flag_no_peephole, 0,
- "Enable machine specific peephole optimisations" },
+ N_("Enable machine specific peephole optimisations") },
{"force-mem", &flag_force_mem, 1,
- "Copy memory operands into registers before using" },
+ N_("Copy memory operands into registers before using") },
{"force-addr", &flag_force_addr, 1,
- "Copy memory address constants into regs before using" },
+ N_("Copy memory address constants into regs before using") },
{"function-cse", &flag_no_function_cse, 0,
- "Allow function addresses to be held in registers" },
+ N_("Allow function addresses to be held in registers") },
{"inline-functions", &flag_inline_functions, 1,
- "Integrate simple functions into their callers" },
+ N_("Integrate simple functions into their callers") },
{"keep-inline-functions", &flag_keep_inline_functions, 1,
- "Generate code for funcs even if they are fully inlined" },
+ N_("Generate code for funcs even if they are fully inlined") },
{"inline", &flag_no_inline, 0,
- "Pay attention to the 'inline' keyword"},
+ N_("Pay attention to the 'inline' keyword") },
{"keep-static-consts", &flag_keep_static_consts, 1,
- "Emit static const variables even if they are not used" },
+ N_("Emit static const variables even if they are not used") },
{"syntax-only", &flag_syntax_only, 1,
- "Check for syntax errors, then stop" },
+ N_("Check for syntax errors, then stop") },
{"shared-data", &flag_shared_data, 1,
- "Mark data as shared rather than private" },
+ N_("Mark data as shared rather than private") },
{"caller-saves", &flag_caller_saves, 1,
- "Enable saving registers around function calls" },
+ N_("Enable saving registers around function calls") },
{"pcc-struct-return", &flag_pcc_struct_return, 1,
- "Return 'short' aggregates in memory, not registers" },
+ N_("Return 'short' aggregates in memory, not registers") },
{"reg-struct-return", &flag_pcc_struct_return, 0,
- "Return 'short' aggregates in registers" },
+ N_("Return 'short' aggregates in registers") },
{"delayed-branch", &flag_delayed_branch, 1,
- "Attempt to fill delay slots of branch instructions" },
+ N_("Attempt to fill delay slots of branch instructions") },
{"gcse", &flag_gcse, 1,
- "Perform the global common subexpression elimination" },
+ N_("Perform the global common subexpression elimination") },
+ {"gcse-lm", &flag_gcse_lm, 1,
+ N_("Perform enhanced load motion during global subexpression elimination") },
+ {"gcse-sm", &flag_gcse_sm, 1,
+ N_("Perform store motion after global subexpression elimination") },
{"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1,
- "Run CSE pass after loop optimisations"},
+ N_("Run CSE pass after loop optimisations") },
{"rerun-loop-opt", &flag_rerun_loop_opt, 1,
- "Run the loop optimiser twice"},
+ N_("Run the loop optimiser twice") },
{"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1,
- "Delete useless null pointer checks" },
+ N_("Delete useless null pointer checks") },
{"pretend-float", &flag_pretend_float, 1,
- "Pretend that host and target use the same FP format"},
+ N_("Pretend that host and target use the same FP format") },
{"schedule-insns", &flag_schedule_insns, 1,
- "Reschedule instructions before register allocation"},
+ N_("Reschedule instructions before register allocation") },
{"schedule-insns2", &flag_schedule_insns_after_reload, 1,
- "Reschedule instructions after register allocation"},
+ N_("Reschedule instructions after register allocation") },
{"sched-interblock",&flag_schedule_interblock, 1,
- "Enable scheduling across basic blocks" },
+ N_("Enable scheduling across basic blocks") },
{"sched-spec",&flag_schedule_speculative, 1,
- "Allow speculative motion of non-loads" },
+ N_("Allow speculative motion of non-loads") },
{"sched-spec-load",&flag_schedule_speculative_load, 1,
- "Allow speculative motion of some loads" },
+ N_("Allow speculative motion of some loads") },
{"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1,
- "Allow speculative motion of more loads" },
+ N_("Allow speculative motion of more loads") },
{"branch-count-reg",&flag_branch_on_count_reg, 1,
- "Replace add,compare,branch with branch on count reg"},
+ N_("Replace add,compare,branch with branch on count reg") },
{"pic", &flag_pic, 1,
- "Generate position independent code, if possible"},
+ N_("Generate position independent code, if possible") },
{"PIC", &flag_pic, 2, ""},
{"exceptions", &flag_exceptions, 1,
- "Enable exception handling" },
- {"new-exceptions", &flag_new_exceptions, 1,
- "Use the new model for exception handling" },
+ N_("Enable exception handling") },
{"unwind-tables", &flag_unwind_tables, 1,
- "Just generate unwind tables for exception handling" },
- {"sjlj-exceptions", &exceptions_via_longjmp, 1,
- "Use setjmp/longjmp to handle exceptions" },
- {"asynchronous-exceptions", &asynchronous_exceptions, 1,
- "Support asynchronous exceptions" },
+ N_("Just generate unwind tables for exception handling") },
+ {"non-call-exceptions", &flag_non_call_exceptions, 1,
+ N_("Support synchronous non-call exceptions") },
{"profile-arcs", &profile_arc_flag, 1,
- "Insert arc based program profiling code" },
+ N_("Insert arc based program profiling code") },
{"test-coverage", &flag_test_coverage, 1,
- "Create data files needed by gcov" },
+ N_("Create data files needed by gcov") },
{"branch-probabilities", &flag_branch_probabilities, 1,
- "Use profiling information for branch probabilities" },
+ N_("Use profiling information for branch probabilities") },
{"reorder-blocks", &flag_reorder_blocks, 1,
- "Reorder basic blocks to improve code placement" },
+ N_("Reorder basic blocks to improve code placement") },
{"rename-registers", &flag_rename_registers, 1,
- "Do the register renaming optimization pass"},
- {"fast-math", &flag_fast_math, 1,
- "Improve FP speed by violating ANSI & IEEE rules" },
+ N_("Do the register renaming optimization pass") },
{"common", &flag_no_common, 0,
- "Do not put unitialised globals in the common section" },
+ N_("Do not put unitialised globals in the common section") },
{"inhibit-size-directive", &flag_inhibit_size_directive, 1,
- "Do not generate .size directives" },
+ N_("Do not generate .size directives") },
{"function-sections", &flag_function_sections, 1,
- "place each function into its own section" },
+ N_("place each function into its own section") },
{"data-sections", &flag_data_sections, 1,
- "place data items into their own section" },
+ N_("place data items into their own section") },
{"verbose-asm", &flag_verbose_asm, 1,
- "Add extra commentry to assembler output"},
+ N_("Add extra commentry to assembler output") },
{"gnu-linker", &flag_gnu_linker, 1,
- "Output GNU ld formatted global initialisers"},
+ N_("Output GNU ld formatted global initialisers") },
{"regmove", &flag_regmove, 1,
- "Enables a register move optimisation"},
+ N_("Enables a register move optimisation") },
{"optimize-register-move", &flag_regmove, 1,
- "Do the full regmove optimization pass"},
+ N_("Do the full regmove optimization pass") },
{"pack-struct", &flag_pack_struct, 1,
- "Pack structure members together without holes" },
+ N_("Pack structure members together without holes") },
{"stack-check", &flag_stack_check, 1,
- "Insert stack checking code into the program" },
+ N_("Insert stack checking code into the program") },
{"argument-alias", &flag_argument_noalias, 0,
- "Specify that arguments may alias each other & globals"},
+ N_("Specify that arguments may alias each other & globals") },
{"argument-noalias", &flag_argument_noalias, 1,
- "Assume arguments may alias globals but not each other"},
+ N_("Assume arguments may alias globals but not each other") },
{"argument-noalias-global", &flag_argument_noalias, 2,
- "Assume arguments do not alias each other or globals" },
+ N_("Assume arguments do not alias each other or globals") },
{"strict-aliasing", &flag_strict_aliasing, 1,
- "Assume strict aliasing rules apply" },
+ N_("Assume strict aliasing rules apply") },
{"align-loops", &align_loops, 0,
- "Align the start of loops" },
+ N_("Align the start of loops") },
{"align-jumps", &align_jumps, 0,
- "Align labels which are only reached by jumping" },
+ N_("Align labels which are only reached by jumping") },
{"align-labels", &align_labels, 0,
- "Align all labels" },
+ N_("Align all labels") },
{"align-functions", &align_functions, 0,
- "Align the start of functions" },
+ N_("Align the start of functions") },
{"check-memory-usage", &flag_check_memory_usage, 1,
- "Generate code to check every memory access" },
+ N_("Generate code to check every memory access") },
{"prefix-function-name", &flag_prefix_function_name, 1,
- "Add a prefix to all function names" },
+ N_("Add a prefix to all function names") },
{"dump-unnumbered", &flag_dump_unnumbered, 1,
- "Suppress output of instruction numbers and line number notes in debugging dumps"},
+ N_("Suppress output of instruction numbers and line number notes in debugging dumps") },
{"instrument-functions", &flag_instrument_function_entry_exit, 1,
- "Instrument function entry/exit with profiling calls"},
+ N_("Instrument function entry/exit with profiling calls") },
{"ssa", &flag_ssa, 1,
- "Enable SSA optimizations" },
- {"dce", &flag_dce, 1,
- "Enable dead code elimination" },
+ N_("Enable SSA optimizations") },
+ {"ssa-ccp", &flag_ssa_ccp, 1,
+ N_("Enable SSA conditonal constant propagation") },
+ {"ssa-dce", &flag_ssa_dce, 1,
+ N_("Enable aggressive SSA dead code elimination") },
{"leading-underscore", &flag_leading_underscore, 1,
- "External symbols have a leading underscore" },
+ N_("External symbols have a leading underscore") },
{"ident", &flag_no_ident, 0,
- "Process #ident directives"},
+ N_("Process #ident directives") },
{ "peephole2", &flag_peephole2, 1,
- "Enables an rtl peephole pass run before sched2" },
+ N_("Enables an rtl peephole pass run before sched2") },
{ "guess-branch-probability", &flag_guess_branch_prob, 1,
- "Enables guessing of branch probabilities" },
+ N_("Enables guessing of branch probabilities") },
{"math-errno", &flag_errno_math, 1,
- "Set errno after built-in math functions"},
+ N_("Set errno after built-in math functions") },
+ {"trapping-math", &flag_trapping_math, 1,
+ N_("Floating-point operations can trap") },
+ {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1,
+ N_("Allow math optimizations that may violate IEEE or ANSI standards") },
{"bounded-pointers", &flag_bounded_pointers, 1,
- "Compile pointers as triples: value, base & end" },
+ N_("Compile pointers as triples: value, base & end") },
{"bounds-check", &flag_bounds_check, 1,
- "Generate code to check bounds before dereferencing pointers and arrays" },
+ N_("Generate code to check bounds before dereferencing pointers and arrays") },
{"single-precision-constant", &flag_single_precision_constant, 1,
- "Convert floating point constant to single precision constant"},
+ N_("Convert floating point constant to single precision constant") },
{"time-report", &time_report, 1,
- "Report time taken by each compiler pass at end of run"},
+ N_("Report time taken by each compiler pass at end of run") },
{"mem-report", &mem_report, 1,
- "Report on permanent memory allocation at end of run"},
+ N_("Report on permanent memory allocation at end of run") },
{ "trapv", &flag_trapv, 1,
- "Trap for signed overflow in addition / subtraction / multiplication." },
+ N_("Trap for signed overflow in addition / subtraction / multiplication.") },
};
/* Table of language-specific options. */
used here is to only describe those options which are not
enabled by default. */
- { "-ansi", "Compile just for ISO C89" },
+ { "-ansi",
+ N_("Compile just for ISO C89") },
{ "-fallow-single-precision",
- "Do not promote floats to double if using -traditional" },
- { "-std= ", "Determine language standard"},
+ N_("Do not promote floats to double if using -traditional") },
+ { "-std= ",
+ N_("Determine language standard") },
{ "-fsigned-bitfields", "" },
- { "-funsigned-bitfields","Make bitfields by unsigned by default" },
+ { "-funsigned-bitfields",
+ N_("Make bitfields by unsigned by default") },
{ "-fno-signed-bitfields", "" },
{ "-fno-unsigned-bitfields","" },
- { "-fsigned-char", "Make 'char' be signed by default"},
- { "-funsigned-char", "Make 'char' be unsigned by default"},
+ { "-fsigned-char",
+ N_("Make 'char' be signed by default") },
+ { "-funsigned-char",
+ N_("Make 'char' be unsigned by default") },
{ "-fno-signed-char", "" },
{ "-fno-unsigned-char", "" },
{ "-ftraditional", "" },
- { "-traditional", "Attempt to support traditional K&R style C"},
+ { "-traditional",
+ N_("Attempt to support traditional K&R style C") },
{ "-fnotraditional", "" },
{ "-fno-traditional", "" },
{ "-fasm", "" },
- { "-fno-asm", "Do not recognise the 'asm' keyword" },
+ { "-fno-asm",
+ N_("Do not recognise the 'asm' keyword") },
{ "-fbuiltin", "" },
- { "-fno-builtin", "Do not recognise any built in functions" },
- { "-fhosted", "Assume normal C execution environment" },
+ { "-fno-builtin",
+ N_("Do not recognise any built in functions") },
+ { "-fhosted",
+ N_("Assume normal C execution environment") },
{ "-fno-hosted", "" },
{ "-ffreestanding",
- "Assume that standard libraries & main might not exist" },
+ N_("Assume that standard libraries & main might not exist") },
{ "-fno-freestanding", "" },
- { "-fcond-mismatch", "Allow different types as args of ? operator"},
+ { "-fcond-mismatch",
+ N_("Allow different types as args of ? operator") },
{ "-fno-cond-mismatch", "" },
- { "-fdollars-in-identifiers", "Allow the use of $ inside identifiers" },
+ { "-fdollars-in-identifiers",
+ N_("Allow the use of $ inside identifiers") },
{ "-fno-dollars-in-identifiers", "" },
{ "-fpreprocessed", "" },
{ "-fno-preprocessed", "" },
- { "-fshort-double", "Use the same size for double as for float" },
+ { "-fshort-double",
+ N_("Use the same size for double as for float") },
{ "-fno-short-double", "" },
- { "-fshort-enums", "Use the smallest fitting integer to hold enums"},
+ { "-fshort-enums",
+ N_("Use the smallest fitting integer to hold enums") },
{ "-fno-short-enums", "" },
- { "-fshort-wchar", "Override the underlying type for wchar_t to `unsigned short'" },
+ { "-fshort-wchar",
+ N_("Override the underlying type for wchar_t to `unsigned short'") },
{ "-fno-short-wchar", "" },
- { "-Wall", "Enable most warning messages" },
+ { "-Wall",
+ N_("Enable most warning messages") },
{ "-Wbad-function-cast",
- "Warn about casting functions to incompatible types" },
+ N_("Warn about casting functions to incompatible types") },
{ "-Wno-bad-function-cast", "" },
{ "-Wno-missing-noreturn", "" },
{ "-Wmissing-format-attribute",
- "Warn about functions which might be candidates for format attributes" },
+ N_("Warn about functions which might be candidates for format attributes") },
{ "-Wno-missing-format-attribute", "" },
- { "-Wcast-qual", "Warn about casts which discard qualifiers"},
+ { "-Wcast-qual",
+ N_("Warn about casts which discard qualifiers") },
{ "-Wno-cast-qual", "" },
- { "-Wchar-subscripts", "Warn about subscripts whose type is 'char'"},
+ { "-Wchar-subscripts",
+ N_("Warn about subscripts whose type is 'char'") },
{ "-Wno-char-subscripts", "" },
- { "-Wcomment", "Warn if nested comments are detected" },
+ { "-Wcomment",
+ N_("Warn if nested comments are detected") },
{ "-Wno-comment", "" },
- { "-Wcomments", "Warn if nested comments are detected" },
+ { "-Wcomments",
+ N_("Warn if nested comments are detected") },
{ "-Wno-comments", "" },
- { "-Wconversion", "Warn about possibly confusing type conversions" },
+ { "-Wconversion",
+ N_("Warn about possibly confusing type conversions") },
{ "-Wno-conversion", "" },
- { "-Wformat", "Warn about printf/scanf/strftime/strfmon format anomalies" },
+ { "-Wformat",
+ N_("Warn about printf/scanf/strftime/strfmon format anomalies") },
{ "-Wno-format", "" },
{ "-Wformat-y2k", "" },
{ "-Wno-format-y2k",
- "Don't warn about strftime formats yielding 2 digit years" },
+ N_("Don't warn about strftime formats yielding 2 digit years") },
{ "-Wformat-extra-args", "" },
{ "-Wno-format-extra-args",
- "Don't warn about too many arguments to format functions" },
- { "-Wformat-nonliteral", "Warn about non-string-literal format strings" },
+ N_("Don't warn about too many arguments to format functions") },
+ { "-Wformat-nonliteral",
+ N_("Warn about non-string-literal format strings") },
{ "-Wno-format-nonliteral", "" },
{ "-Wformat-security",
- "Warn about possible security problems with format functions" },
+ N_("Warn about possible security problems with format functions") },
{ "-Wno-format-security", "" },
{ "-Wimplicit-function-declaration",
- "Warn about implicit function declarations" },
+ N_("Warn about implicit function declarations") },
{ "-Wno-implicit-function-declaration", "" },
{ "-Werror-implicit-function-declaration", "" },
- { "-Wimplicit-int", "Warn when a declaration does not specify a type" },
+ { "-Wimplicit-int",
+ N_("Warn when a declaration does not specify a type") },
{ "-Wno-implicit-int", "" },
{ "-Wimplicit", "" },
{ "-Wno-implicit", "" },
- { "-Wimport", "Warn about the use of the #import directive" },
+ { "-Wimport",
+ N_("Warn about the use of the #import directive") },
{ "-Wno-import", "" },
{ "-Wlong-long","" },
- { "-Wno-long-long", "Do not warn about using 'long long' when -pedantic" },
- { "-Wmain", "Warn about suspicious declarations of main" },
+ { "-Wno-long-long",
+ N_("Do not warn about using 'long long' when -pedantic") },
+ { "-Wmain",
+ N_("Warn about suspicious declarations of main") },
{ "-Wno-main", "" },
{ "-Wmissing-braces",
- "Warn about possibly missing braces around initialisers" },
+ N_("Warn about possibly missing braces around initialisers") },
{ "-Wno-missing-braces", "" },
{ "-Wmissing-declarations",
- "Warn about global funcs without previous declarations"},
+ N_("Warn about global funcs without previous declarations") },
{ "-Wno-missing-declarations", "" },
- { "-Wmissing-prototypes", "Warn about global funcs without prototypes" },
+ { "-Wmissing-prototypes",
+ N_("Warn about global funcs without prototypes") },
{ "-Wno-missing-prototypes", "" },
- { "-Wmultichar", "Warn about use of multicharacter literals"},
+ { "-Wmultichar",
+ N_("Warn about use of multicharacter literals") },
{ "-Wno-multichar", "" },
- { "-Wnested-externs", "Warn about externs not at file scope level" },
+ { "-Wnested-externs",
+ N_("Warn about externs not at file scope level") },
{ "-Wno-nested-externs", "" },
- { "-Wparentheses", "Warn about possible missing parentheses" },
+ { "-Wparentheses",
+ N_("Warn about possible missing parentheses") },
{ "-Wno-parentheses", "" },
{ "-Wsequence-point",
- "Warn about possible violations of sequence point rules" },
+ N_("Warn about possible violations of sequence point rules") },
{ "-Wno-sequence-point", "" },
- { "-Wpointer-arith", "Warn about function pointer arithmetic" },
+ { "-Wpointer-arith",
+ N_("Warn about function pointer arithmetic") },
{ "-Wno-pointer-arith", "" },
{ "-Wredundant-decls",
- "Warn about multiple declarations of the same object" },
+ N_("Warn about multiple declarations of the same object") },
{ "-Wno-redundant-decls", "" },
- { "-Wsign-compare", "Warn about signed/unsigned comparisons" },
+ { "-Wsign-compare",
+ N_("Warn about signed/unsigned comparisons") },
{ "-Wno-sign-compare", "" },
- { "-Wfloat-equal", "Warn about testing equality of floating point numbers" },
+ { "-Wfloat-equal",
+ N_("Warn about testing equality of floating point numbers") },
{ "-Wno-float-equal", "" },
- { "-Wunknown-pragmas", "Warn about unrecognized pragmas" },
+ { "-Wunknown-pragmas",
+ N_("Warn about unrecognized pragmas") },
{ "-Wno-unknown-pragmas", "" },
- { "-Wstrict-prototypes", "Warn about non-prototyped function decls" },
+ { "-Wstrict-prototypes",
+ N_("Warn about non-prototyped function decls") },
{ "-Wno-strict-prototypes", "" },
- { "-Wtraditional", "Warn about constructs whose meaning change in ISO C"},
+ { "-Wtraditional",
+ N_("Warn about constructs whose meaning change in ISO C") },
{ "-Wno-traditional", "" },
- { "-Wtrigraphs", "Warn when trigraphs are encountered" },
+ { "-Wtrigraphs",
+ N_("Warn when trigraphs are encountered") },
{ "-Wno-trigraphs", "" },
{ "-Wundef", "" },
{ "-Wno-undef", "" },
- { "-Wwrite-strings", "Mark strings as 'const char *'"},
+ { "-Wwrite-strings",
+ N_("Mark strings as 'const char *'") },
{ "-Wno-write-strings", "" },
#define DEFINE_LANG_NAME(NAME) { NULL, NAME },
int warn_cast_align;
-/* Nonzero means warn about any identifiers that match in the first N
- characters. The value N is in `id_clash_len'. */
-
-int warn_id_clash;
-int id_clash_len;
-
/* 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'. */
lang_independent_options W_options[] =
{
- {"unused-function", &warn_unused_function, 1, "Warn when a function is unused" },
- {"unused-label", &warn_unused_label, 1, "Warn when a label is unused" },
- {"unused-parameter", &warn_unused_parameter, 1, "Warn when a function parameter is unused" },
- {"unused-variable", &warn_unused_variable, 1, "Warn when a variable is unused" },
- {"unused-value", &warn_unused_value, 1, "Warn when an expression value is unused" },
- {"system-headers", &warn_system_headers, 1, "Do not suppress warnings from system headers"},
- {"error", &warnings_are_errors, 1, ""},
- {"shadow", &warn_shadow, 1, "Warn when one local variable shadows another" },
+ {"unused-function", &warn_unused_function, 1,
+ N_("Warn when a function is unused") },
+ {"unused-label", &warn_unused_label, 1,
+ N_("Warn when a label is unused") },
+ {"unused-parameter", &warn_unused_parameter, 1,
+ N_("Warn when a function parameter is unused") },
+ {"unused-variable", &warn_unused_variable, 1,
+ N_("Warn when a variable is unused") },
+ {"unused-value", &warn_unused_value, 1,
+ N_("Warn when an expression value is unused") },
+ {"system-headers", &warn_system_headers, 1,
+ N_("Do not suppress warnings from system headers") },
+ {"error", &warnings_are_errors, 1,
+ N_("Treat all warnings as errors") },
+ {"shadow", &warn_shadow, 1,
+ N_("Warn when one local variable shadows another") },
{"switch", &warn_switch, 1,
- "Warn about enumerated switches missing a specific case" },
+ N_("Warn about enumerated switches missing a specific case") },
{"aggregate-return", &warn_aggregate_return, 1,
- "Warn about returning structures, unions or arrays" },
+ N_("Warn about returning structures, unions or arrays") },
{"cast-align", &warn_cast_align, 1,
- "Warn about pointer casts which increase alignment" },
+ N_("Warn about pointer casts which increase alignment") },
{"unreachable-code", &warn_notreached, 1,
- "Warn about code that will never be executed" },
+ N_("Warn about code that will never be executed") },
{"uninitialized", &warn_uninitialized, 1,
- "Warn about unitialized automatic variables"},
+ N_("Warn about unitialized automatic variables") },
{"inline", &warn_inline, 1,
- "Warn when an inlined function cannot be inlined"},
+ N_("Warn when an inlined function cannot be inlined") },
{"packed", &warn_packed, 1,
- "Warn when the packed attribute has no effect on struct layout"},
+ N_("Warn when the packed attribute has no effect on struct layout") },
{"padded", &warn_padded, 1,
- "Warn when padding is required to align struct members"},
+ N_("Warn when padding is required to align struct members") },
{"disabled-optimization", &warn_disabled_optimization, 1,
- "Warn when an optimization pass is disabled"},
+ N_("Warn when an optimization pass is disabled") },
{"missing-noreturn", &warn_missing_noreturn, 1,
- "Warn about functions which might be candidates for attribute noreturn"}
+ N_("Warn about functions which might be candidates for attribute noreturn") }
};
+
+/* The following routines are useful in setting all the flags that
+ -ffast-math and -fno-fast-math imply. */
+
+void
+set_fast_math_flags ()
+{
+ flag_trapping_math = 0;
+ flag_unsafe_math_optimizations = 1;
+ flag_errno_math = 0;
+}
+
+void
+set_no_fast_math_flags ()
+{
+ flag_trapping_math = 1;
+ flag_unsafe_math_optimizations = 0;
+ flag_errno_math = 1;
+}
+
\f
/* Output files for assembler code (real compiler output)
and debugging dumps. */
return log;
}
-/* Return the approximate positive square root of a number N. This is for
- statistical reports, not code generation. */
-double
-approx_sqrt (x)
- double x;
-{
- double s, d;
-
- if (x < 0)
- abort ();
- if (x == 0)
- return 0;
-
- s = x;
- do
- {
- d = (s * s - x) / (2 * s);
- s -= d;
- }
- while (d > .0001);
- return s;
-}
-
static int float_handler_set;
int float_handled;
jmp_buf float_handler;
{
if (float_handled == 0)
crash_signal (signo);
-#if defined (USG) || defined (hpux)
- /* Re-enable the signal catcher. */
- signal (SIGFPE, float_signal);
-#endif
float_handled = 0;
+
+ /* On System-V derived systems, we must reinstall the signal handler.
+ This is harmless on BSD-derived systems. */
signal (SIGFPE, float_signal);
longjmp (float_handler, 1);
}
/* Specify where to longjmp to when a floating arithmetic error happens.
If HANDLER is 0, it means don't handle the errors any more. */
-void
+static void
set_float_handler (handler)
jmp_buf handler;
{
float_handled = (handler != 0);
if (handler)
- bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
+ memcpy (float_handler, handler, sizeof (float_handler));
if (float_handled && ! float_handler_set)
{
}
}
-/* Given a file name X, return the nondirectory portion. */
-
-char *
-file_name_nondirectory (x)
- const char *x;
-{
- char *tmp = (char *) strrchr (x, '/');
- if (DIR_SEPARATOR != '/' && ! tmp)
- tmp = (char *) strrchr (x, DIR_SEPARATOR);
- if (tmp)
- return (char *) (tmp + 1);
- else
- return (char *) x;
-}
-
/* Output a quoted string. */
void
#endif
}
\f
-#ifdef ASM_IDENTIFY_LANGUAGE
-/* Routine to build language identifier for object file. */
-
-static void
-output_lang_identify (asm_out_file)
- FILE *asm_out_file;
-{
- int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
- char *s = (char *) alloca (len);
-
- sprintf (s, "__gnu_compiled_%s", lang_identify ());
- ASM_OUTPUT_LABEL (asm_out_file, s);
-}
-#endif
-
/* Routine to open a dump file. Return true if the dump file is enabled. */
static int
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
{
reconsider = 1;
- rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
+ rest_of_decl_compilation (decl, NULL, 1, 1);
}
if (TREE_CODE (decl) == FUNCTION_DECL
/* Cancel the RTL for this decl so that, if debugging info
output for global variables is still to come,
this one will be omitted. */
- DECL_RTL (decl) = NULL;
+ SET_DECL_RTL (decl, NULL_RTX);
/* Warn about any function
declared static but not defined.
warning_with_decl (decl, "`%s' defined but not used");
timevar_push (TV_SYMOUT);
-#ifdef SDB_DEBUGGING_INFO
- /* The COFF linker can move initialized global vars to the end.
- And that can screw up the symbol ordering.
- By putting the symbols in that order to begin with,
- we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
- if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
- && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
- && ! DECL_EXTERNAL (decl)
- && DECL_RTL (decl) != 0)
- sdbout_symbol (decl, 0);
-
- /* Output COFF information for non-global
- file-scope initialized variables. */
- if (write_symbols == SDB_DEBUG
- && TREE_CODE (decl) == VAR_DECL
- && DECL_INITIAL (decl)
- && ! DECL_EXTERNAL (decl)
- && DECL_RTL (decl) != 0
- && GET_CODE (DECL_RTL (decl)) == MEM)
- sdbout_toplevel_data (decl);
-#endif /* SDB_DEBUGGING_INFO */
-#ifdef DWARF_DEBUGGING_INFO
- /* Output DWARF information for file-scope tentative data object
- declarations, file-scope (extern) function declarations (which
- had no corresponding body) and file-scope tagged type declarations
- and definitions which have not yet been forced out. */
-
- if (write_symbols == DWARF_DEBUG
- && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
- dwarfout_file_scope_decl (decl, 1);
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- /* Output DWARF2 information for file-scope tentative data object
- declarations, file-scope (extern) function declarations (which
- had no corresponding body) and file-scope tagged type declarations
- and definitions which have not yet been forced out. */
-
- if (write_symbols == DWARF2_DEBUG
- && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
- dwarf2out_decl (decl);
-#endif
+ (*debug_hooks->global_decl) (decl);
timevar_pop (TV_SYMOUT);
}
}
init_timevar ();
timevar_start (TV_TOTAL);
+ /* Open assembler 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. */
+
+ if (! name_specified && asm_file_name == 0)
+ asm_out_file = stdout;
+ else
+ {
+ if (asm_file_name == 0)
+ {
+ int len = strlen (dump_base_name);
+ char *dumpname = (char *) xmalloc (len + 6);
+ memcpy (dumpname, dump_base_name, len + 1);
+ strip_off_ending (dumpname, len);
+ strcat (dumpname, ".s");
+ asm_file_name = dumpname;
+ }
+ if (!strcmp (asm_file_name, "-"))
+ asm_out_file = stdout;
+ else
+ 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);
+ }
+
/* Initialize data in various passes. */
init_obstacks ();
init_regs ();
init_alias_once ();
init_decl_processing ();
+ init_eh ();
init_optabs ();
init_stmt ();
- init_eh ();
init_loop ();
init_reload ();
init_function_once ();
init_stor_layout_once ();
init_varasm_once ();
+ init_EXPR_INSN_LIST_cache ();
/* The following initialization functions need to generate rtl, so
provide a dummy function context for them. */
fatal_io_error ("can't open %s", aux_info_file_name);
}
- /* Open assembler 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. */
-
- if (! name_specified && asm_file_name == 0)
- asm_out_file = stdout;
- else
- {
- if (asm_file_name == 0)
- {
- int len = strlen (dump_base_name);
- char *dumpname = (char *) xmalloc (len + 6);
- memcpy (dumpname, dump_base_name, len + 1);
- strip_off_ending (dumpname, len);
- strcat (dumpname, ".s");
- asm_file_name = dumpname;
- }
- if (!strcmp (asm_file_name, "-"))
- asm_out_file = stdout;
- else
- 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);
- }
-
#ifdef IO_BUFFER_SIZE
setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
_IOFBF, IO_BUFFER_SIZE);
}
else
{
+#ifdef ASM_FILE_START
ASM_FILE_START (asm_out_file);
+#endif
#ifdef ASM_COMMENT_START
if (flag_verbose_asm)
fprintf (asm_out_file, "\n");
}
#endif
+ } /* ! flag_syntax_only */
- /* Output something to inform GDB that this compilation was by GCC. */
-#ifndef ASM_IDENTIFY_GCC
- fprintf (asm_out_file, "gcc2_compiled.:\n");
-#else
- ASM_IDENTIFY_GCC (asm_out_file);
+ /* Set up the debug hooks based on write_symbols. Default to doing
+ nothing. */
+ debug_hooks = &do_nothing_debug_hooks;
+#if defined(DBX_DEBUGGING_INFO)
+ if (write_symbols == DBX_DEBUG)
+ debug_hooks = &dbx_debug_hooks;
#endif
-
- /* Output something to identify which front-end produced this file. */
-#ifdef ASM_IDENTIFY_LANGUAGE
- ASM_IDENTIFY_LANGUAGE (asm_out_file);
+#if defined(XCOFF_DEBUGGING_INFO)
+ if (write_symbols == XCOFF_DEBUG)
+ debug_hooks = &xcoff_debug_hooks;
+#endif
+#ifdef SDB_DEBUGGING_INFO
+ if (write_symbols == SDB_DEBUG)
+ debug_hooks = &sdb_debug_hooks;
+#endif
+#ifdef DWARF_DEBUGGING_INFO
+ if (write_symbols == DWARF_DEBUG)
+ debug_hooks = &dwarf_debug_hooks;
+#endif
+#ifdef DWARF2_DEBUGGING_INFO
+ if (write_symbols == DWARF2_DEBUG)
+ debug_hooks = &dwarf2_debug_hooks;
#endif
- } /* ! flag_syntax_only */
-#ifndef ASM_OUTPUT_SECTION_NAME
- if (flag_function_sections)
- {
- warning ("-ffunction-sections not supported for this target.");
- flag_function_sections = 0;
- }
- if (flag_data_sections)
+ if (! targetm.have_named_sections)
{
- warning ("-fdata-sections not supported for this target.");
- flag_data_sections = 0;
+ if (flag_function_sections)
+ {
+ warning ("-ffunction-sections not supported for this target.");
+ flag_function_sections = 0;
+ }
+ if (flag_data_sections)
+ {
+ warning ("-fdata-sections not supported for this target.");
+ flag_data_sections = 0;
+ }
}
-#endif
if (flag_function_sections
&& (profile_flag || profile_block_flag))
warning ("-ffunction-sections may affect debugging on some targets.");
#endif
- /* ??? Note: There used to be a conditional here
- to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
- This was to guarantee separation between gcc_compiled. and
- the first function, for the sake of dbx on Suns.
- However, having the extra zero here confused the Emacs
- code for unexec, and might confuse other programs too.
- Therefore, I took out that change.
- In future versions we should find another way to solve
- that dbx problem. -- rms, 23 May 93. */
-
- /* Don't let the first function fall at the same address
- as gcc_compiled., if profiling. */
- if (profile_flag || profile_block_flag)
- {
- /* It's best if we can write a nop here since some
- assemblers don't tolerate zeros in the text section. */
- output_asm_insn (get_insn_template (CODE_FOR_nop, NULL), NULL_PTR);
- }
-
/* If dbx symbol table desired, initialize writing it
and output the predefined types. */
timevar_push (TV_SYMOUT);
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- dbxout_init (asm_out_file, main_input_filename, getdecls ());
-#endif
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_init (asm_out_file, main_input_filename, getdecls ());
-#endif
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- dwarfout_init (asm_out_file, main_input_filename);
-#endif
#ifdef DWARF2_UNWIND_INFO
if (dwarf2out_do_frame ())
dwarf2out_frame_init ();
#endif
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_init (asm_out_file, main_input_filename);
-#endif
+
+ (*debug_hooks->init) (main_input_filename);
timevar_pop (TV_SYMOUT);
/* Initialize yet another pass. */
loop above. */
output_func_start_profiler ();
- /* Now that all possible functions have been output, we can dump
- the exception table. */
-
-#ifndef IA64_UNWIND_INFO
- output_exception_table ();
-#endif
- free_exception_table ();
-
check_global_declarations (vec, len);
/* Clean up. */
/* Do dbx symbols. */
timevar_push (TV_SYMOUT);
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- dbxout_finish (asm_out_file, main_input_filename);
-#endif
-
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- dwarfout_finish ();
-#endif
#ifdef DWARF2_UNWIND_INFO
if (dwarf2out_do_frame ())
dwarf2out_frame_finish ();
#endif
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_finish ();
-#endif
+ (*debug_hooks->finish) (main_input_filename);
timevar_pop (TV_SYMOUT);
/* Output some stuff at end of file if nec. */
+ dw2_output_indirect_constants ();
+
end_final (dump_base_name);
if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
ASM_FILE_END (asm_out_file);
#endif
+ /* Attach a special .ident directive to the end of the file to identify
+ the version of GCC which compiled this code. The format of the .ident
+ string is patterned after the ones produced by native SVR4 compilers. */
+#ifdef IDENT_ASM_OP
+ if (!flag_no_ident)
+ fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
+ IDENT_ASM_OP, version_string);
+#endif
+
/* Language-specific end of compilation actions. */
finish_syntax:
if (lang_hooks.finish)
{
int i;
- for (i = 0; i < DFI_MAX; ++i)
+ for (i = 0; i < (int) DFI_MAX; ++i)
if (dump_file[i].initialized && dump_file[i].graph_dump_p)
{
char seq[16];
This does nothing for local (non-static) variables, unless the
variable is a register variable with an ASMSPEC. In that case, or
- if the variable is not an automatice, it sets up the RTL and
+ if the variable is not an automatic, it sets up the RTL and
outputs any assembler code (label definition, storage allocation
and initialization).
|| TREE_CODE (decl) == FUNCTION_DECL)
{
timevar_push (TV_VARCONST);
- make_decl_rtl (decl, asmspec);
+ if (asmspec)
+ make_decl_rtl (decl, asmspec);
/* Don't output anything
when a tentative file-scope definition is seen.
But at end of compilation, do output code for them. */
{
if (decode_reg_name (asmspec) >= 0)
{
- DECL_RTL (decl) = 0;
+ SET_DECL_RTL (decl, NULL_RTX);
make_decl_rtl (decl, asmspec);
}
else
{
error ("invalid register name `%s' for register variable", asmspec);
DECL_REGISTER (decl) = 0;
- make_decl_rtl (decl, NULL);
+ if (!top_level)
+ expand_decl (decl);
}
}
#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
timevar_pop (TV_SYMOUT);
}
-/* DECL is an inline function, whose body is present, but which is not
- being output at this point. (We're putting that off until we need
- to do it.) If there are any actions that need to take place,
- including the emission of debugging information for the function,
- this is where they should go. This function may be called by
- language-dependent code for front-ends that do not even generate
- RTL for functions that don't need to be put out. */
-
-void
-note_deferral_of_defined_inline_function (decl)
- tree decl ATTRIBUTE_UNUSED;
-{
-#ifdef DWARF_DEBUGGING_INFO
- /* Generate the DWARF info for the "abstract" instance of a function
- which we may later generate inlined and/or out-of-line instances
- of. */
- if (write_symbols == DWARF_DEBUG
- && (DECL_INLINE (decl) || DECL_ABSTRACT (decl))
- && ! DECL_ABSTRACT_ORIGIN (decl))
- {
- /* The front-end may not have set CURRENT_FUNCTION_DECL, but the
- DWARF code expects it to be set in this case. Intuitively,
- DECL is the function we just finished defining, so setting
- CURRENT_FUNCTION_DECL is sensible. */
- tree saved_cfd = current_function_decl;
- int was_abstract = DECL_ABSTRACT (decl);
- current_function_decl = decl;
-
- /* Let the DWARF code do its work. */
- set_decl_abstract_flags (decl, 1);
- dwarfout_file_scope_decl (decl, 0);
- if (! was_abstract)
- set_decl_abstract_flags (decl, 0);
-
- /* Reset CURRENT_FUNCTION_DECL. */
- current_function_decl = saved_cfd;
- }
-#endif
-}
-
-/* FNDECL is an inline function which is about to be emitted out of line.
- Do any preparation, such as emitting abstract debug info for the inline
- before it gets mangled by optimization. */
-
-void
-note_outlining_of_inline_function (fndecl)
- tree fndecl ATTRIBUTE_UNUSED;
-{
-#ifdef DWARF2_DEBUGGING_INFO
- /* The DWARF 2 backend tries to reduce debugging bloat by not emitting
- the abstract description of inline functions until something tries to
- reference them. Force it out now, before optimizations mangle the
- block tree. */
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_abstract_function (fndecl);
-#endif
-}
-
/* This is called from finish_function (within yyparse)
after each top-level definition is parsed.
It is supposed to compile that function or variable
}
/* If requested, consider whether to make this function inline. */
- if (DECL_INLINE (decl) || flag_inline_functions)
+ if ((DECL_INLINE (decl) && !flag_no_inline)
+ || flag_inline_functions)
{
timevar_push (TV_INTEGRATION);
lose = function_cannot_inline_p (decl);
close_dump_file (DFI_rtl, print_rtl, insns);
}
+ /* 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.
finish_compilation will call rest_of_compilation again
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. */
- note_deferral_of_defined_inline_function (decl);
+ (*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 jump_optimize to figure out whether or not we can
+ 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. And, we set optimize to zero
- to keep jump_optimize from working too hard. */
+ work necessary to make that safe. */
if (warn_return_type)
{
int saved_optimize = optimize;
optimize = 0;
+ rebuild_jump_labels (insns);
find_exception_handler_labels ();
- jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
- !JUMP_AFTER_REGSCAN);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP);
optimize = saved_optimize;
}
goto exit_rest_of_compilation;
}
- init_EXPR_INSN_LIST_cache ();
-
ggc_collect ();
/* Initialize some variables used by the optimizers. */
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.*/
+ 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 ());
+ emit_initial_value_sets ();
- /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
+ /* Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */
if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
goto exit_rest_of_compilation;
- /* Emit code to get eh context, if needed. */
- emit_eh_context ();
-
/* We may have potential sibling or tail recursion sites. Select one
(of possibly multiple) methods of performing the call. */
if (flag_optimize_sibling_calls)
timevar_pop (TV_JUMP);
}
+ /* Complete generation of exception handling code. */
+ find_exception_handler_labels ();
+ 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);
+ }
+
#ifdef FINALIZE_PIC
/* If we are doing position-independent code generation, now
is the time to output special prologues and epilogues.
/* Instantiate all virtual registers. */
instantiate_virtual_regs (current_function_decl, insns);
- /* Find all the EH handlers. */
- find_exception_handler_labels ();
-
open_dump_file (DFI_jump, decl);
/* Always do one jump optimization pass to ensure that JUMP_LABEL fields
expected_value_to_br_prob ();
reg_scan (insns, max_reg_num (), 0);
- jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
- JUMP_AFTER_REGSCAN);
+ rebuild_jump_labels (insns);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP);
+ copy_loop_headers (insns);
+ purge_line_number_notes (insns);
timevar_pop (TV_JUMP);
goto exit_rest_of_compilation;
}
- timevar_push (TV_JUMP);
-
- if (optimize > 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)
{
+ /* Convert to SSA form. */
+
+ timevar_push (TV_TO_SSA);
+ open_dump_file (DFI_ssa, decl);
+
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+ convert_to_ssa ();
- /* ??? Run if-conversion before delete_null_pointer_checks,
- since the later does not preserve the CFG. This should
- be changed -- no since converting if's that are going to
- be deleted. */
- timevar_push (TV_IFCVT);
- if_convert (0);
- timevar_pop (TV_IFCVT);
+ close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
+ timevar_pop (TV_TO_SSA);
- /* Try to identify useless null pointer tests and delete them. */
- if (flag_delete_null_pointer_checks)
- delete_null_pointer_checks (insns);
- }
+ /* Perform sparse conditional constant propagation, if requested. */
+ if (flag_ssa_ccp)
+ {
+ timevar_push (TV_SSA_CCP);
+ open_dump_file (DFI_ssa_ccp, 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);
+ ssa_const_prop ();
- close_dump_file (DFI_jump, print_rtl, insns);
+ close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ());
+ timevar_pop (TV_SSA_CCP);
+ }
- ggc_collect ();
+ /* 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. */
+
+ /* 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. */
+
+ if (flag_ssa_dce)
+ {
+ /* Remove dead code. */
+
+ timevar_push (TV_SSA_DCE);
+ open_dump_file (DFI_ssa_dce, decl);
+
+ insns = get_insns ();
+ ssa_eliminate_dead_code();
+
+ close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns);
+ timevar_pop (TV_SSA_DCE);
+ }
+
+ /* Convert from SSA form. */
+
+ timevar_push (TV_FROM_SSA);
+ open_dump_file (DFI_ussa, decl);
+
+ convert_from_ssa ();
+ /* New registers have been created. Rescan their usage. */
+ reg_scan (insns, max_reg_num (), 1);
+ /* Life analysis used in SSA adds log_links but these
+ shouldn't be there until the flow stage, so clear
+ them away. */
+ clear_log_links (insns);
+
+ close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
+ timevar_pop (TV_FROM_SSA);
+
+ ggc_collect ();
+ }
+
+ timevar_push (TV_JUMP);
+
+ if (optimize > 0)
+ {
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
+
+ /* ??? Run if-conversion before delete_null_pointer_checks,
+ since the later does not preserve the CFG. This should
+ be changed -- no since converting if's that are going to
+ be deleted. */
+ timevar_push (TV_IFCVT);
+ if_convert (0);
+ timevar_pop (TV_IFCVT);
+
+ /* Try to identify useless null pointer tests and delete them. */
+ if (flag_delete_null_pointer_checks)
+ delete_null_pointer_checks (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, insns);
+
+ ggc_collect ();
/* Perform common subexpression elimination.
Nonzero value from `cse_main' means that jumps were simplified
if (tem || optimize > 1)
{
timevar_push (TV_JUMP);
- jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
- !JUMP_AFTER_REGSCAN);
+ rebuild_jump_labels (insns);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
timevar_pop (TV_JUMP);
}
/* Run this after jump optmizations remove all the unreachable code
so that unreachable code will not keep values live. */
- delete_trivially_dead_insns (insns, max_reg_num ());
+ delete_trivially_dead_insns (insns, max_reg_num (), 0);
/* Try to identify useless null pointer tests and delete them. */
if (flag_delete_null_pointer_checks)
timevar_push (TV_JUMP);
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
delete_null_pointer_checks (insns);
timevar_pop (TV_JUMP);
ggc_collect ();
- if (optimize > 0 && flag_ssa)
- {
- /* Convert to SSA form. */
-
- timevar_push (TV_TO_SSA);
- open_dump_file (DFI_ssa, decl);
-
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
- convert_to_ssa ();
-
- close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
- timevar_pop (TV_TO_SSA);
-
- /* 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. */
-
- if (flag_dce)
- {
- /* Remove dead code. */
-
- timevar_push (TV_DEAD_CODE_ELIM);
- open_dump_file (DFI_dce, decl);
-
- insns = get_insns ();
- eliminate_dead_code();
-
- close_dump_file (DFI_dce, print_rtl_with_bb, insns);
- timevar_pop (TV_DEAD_CODE_ELIM);
- }
-
- /* Convert from SSA form. */
-
- timevar_push (TV_FROM_SSA);
- open_dump_file (DFI_ussa, decl);
-
- convert_from_ssa ();
- /* New registers have been created. Rescan their usage. */
- reg_scan (insns, max_reg_num (), 1);
- /* Life analysis used in SSA adds log_links but these
- shouldn't be there until the flow stage, so clear
- them away. */
- clear_log_links (insns);
-
- close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
- timevar_pop (TV_FROM_SSA);
-
- ggc_collect ();
- }
-
/* Perform global cse. */
if (optimize > 0 && flag_gcse)
open_dump_file (DFI_gcse, decl);
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
tem = gcse_main (insns, rtl_dump_file);
save_csb = flag_cse_skip_blocks;
timevar_pop (TV_CSE);
cse_not_expected = !flag_rerun_cse_after_loop;
}
-
+
/* 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);
- jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
- !JUMP_AFTER_REGSCAN);
+ rebuild_jump_labels (insns);
+ delete_trivially_dead_insns (insns, max_reg_num (), 0);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
timevar_pop (TV_JUMP);
if (flag_expensive_optimizations)
if (flag_rerun_loop_opt)
{
+ cleanup_barriers ();
+
/* We only want to perform unrolling once. */
loop_optimize (insns, rtl_dump_file, 0);
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 ());
+ delete_trivially_dead_insns (insns, max_reg_num (), 0);
/* 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,
(flag_unroll_loops ? LOOP_UNROLL : 0) | LOOP_BCT);
??? Rework to not call reg_scan so often. */
timevar_push (TV_JUMP);
+ /* The previous 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 jump work
+ better and possibly speed up compilation. */
+ delete_trivially_dead_insns (insns, max_reg_num (), 0);
+
reg_scan (insns, max_reg_num (), 0);
- jump_optimize (insns, !JUMP_CROSS_JUMP,
- !JUMP_NOOP_MOVES, JUMP_AFTER_REGSCAN);
timevar_push (TV_IFCVT);
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
if_convert (0);
timevar_pop(TV_IFCVT);
if (tem)
{
timevar_push (TV_JUMP);
- jump_optimize (insns, !JUMP_CROSS_JUMP,
- !JUMP_NOOP_MOVES, !JUMP_AFTER_REGSCAN);
+ rebuild_jump_labels (insns);
+ find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
timevar_pop (TV_JUMP);
}
}
open_dump_file (DFI_cfg, decl);
find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
+ cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0);
check_function_return_warnings ();
+ /* It may make more sense to mark constant functions after dead code is
+ eliminated by life_analyzis, 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_analyzis rarely eliminates modification of external memory.
+ */
+ mark_constant_function ();
+
close_dump_file (DFI_cfg, print_rtl_with_bb, insns);
if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
flow_loops_free (&loops);
}
life_analysis (insns, rtl_dump_file, PROP_FINAL);
- mark_constant_function ();
timevar_pop (TV_FLOW);
- register_life_up_to_date = 1;
no_new_pseudos = 1;
if (warn_uninitialized || extra_warnings)
rebuild_jump_labels_after_combine
= combine_instructions (insns, max_reg_num ());
+ /* Always purge dead edges, as we may eliminate an insn throwing
+ exception. */
+ rebuild_jump_labels_after_combine |= purge_all_dead_edges ();
+
/* Combining insns may have turned an indirect jump into a
direct jump. Rebuid the JUMP_LABEL fields of jumping
instructions. */
timevar_pop (TV_JUMP);
timevar_push (TV_FLOW);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- cleanup_cfg (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE);
/* Blimey. We've got to have the CFG up to date for the call to
if_convert below. However, the random deletion of blocks
without updating life info can wind up with Wierd Stuff in
global_live_at_end. We then run sched1, which updates things
properly, discovers the wierdness and aborts. */
+ allocate_bb_life_data ();
update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES,
PROP_DEATH_NOTES | PROP_KILL_DEAD_CODE
| PROP_SCAN_DEAD_CODE);
ggc_collect ();
}
+ /* Do unconditional splitting before register allocation to allow machine
+ description to add extra information not needed previously. */
+ split_all_insns (1);
+
/* Any of the several passes since flow1 will have munged register
lifetime data a bit. */
- if (optimize > 0)
- register_life_up_to_date = 0;
+ register_life_up_to_date = 0;
#ifdef OPTIMIZE_MODE_SWITCHING
timevar_push (TV_GCSE);
- if (optimize_mode_switching (NULL_PTR))
+ no_new_pseudos = 0;
+ if (optimize_mode_switching (NULL))
{
/* We did work, and so had to regenerate global life information.
Take advantage of this and don't re-recompute register life
information below. */
register_life_up_to_date = 1;
}
+ no_new_pseudos = 1;
timevar_pop (TV_GCSE);
#endif
+ 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)
{
- timevar_push (TV_SCHED);
open_dump_file (DFI_sched, decl);
/* Do control and data sched analysis,
schedule_insns (rtl_dump_file);
close_dump_file (DFI_sched, print_rtl_with_bb, insns);
- timevar_pop (TV_SCHED);
-
- ggc_collect ();
/* Register lifetime information was updated as part of verifying
the schedule. */
register_life_up_to_date = 1;
}
#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_pop (TV_RELOAD_CSE_REGS);
}
- /* If optimizing, then go ahead and split insns now since we are about
- to recompute flow information anyway. Since we can't split insns after
- reload, do the splitting unconditionally here to avoid gcc from losing
- REG_DEAD notes. */
-#ifdef STACK_REGS
- if (1)
-#else
- if (optimize > 0)
-#endif
- {
- int old_labelnum = max_label_num ();
-
- split_all_insns (0);
- rebuild_label_notes_after_reload |= old_labelnum != max_label_num ();
- }
-
/* Register allocation and reloading may have turned an indirect jump into
a direct jump. If so, we must rebuild the JUMP_LABEL fields of
jumping instructions. */
timevar_push (TV_FLOW2);
open_dump_file (DFI_flow2, decl);
- jump_optimize (insns, !JUMP_CROSS_JUMP,
- JUMP_NOOP_MOVES, !JUMP_AFTER_REGSCAN);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
+#ifdef ENABLE_CHECKING
+ verify_flow_info ();
+#endif
+
+ compute_bb_for_insn (get_max_uid ());
+
+ /* If optimizing, then go ahead and split insns now. */
+ if (optimize > 0)
+ split_all_insns (0);
+
+ cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0);
/* On some machines, the prologue and epilogue code, or parts thereof,
can be represented as RTL. Doing so lets us schedule insns between
if (optimize)
{
- cleanup_cfg (insns);
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_CROSSJUMP);
life_analysis (insns, rtl_dump_file, PROP_FINAL);
/* This is kind of a heuristic. We need to run combine_stack_adjustments
close_dump_file (DFI_ce2, print_rtl_with_bb, insns);
timevar_pop (TV_IFCVT2);
}
+#ifdef STACK_REGS
+ if (optimize)
+ split_all_insns (1);
+#endif
#ifdef INSN_SCHEDULING
if (optimize > 0 && flag_schedule_insns_after_reload)
/* Do control and data sched analysis again,
and write some more of the results to dump file. */
+ split_all_insns (1);
+
schedule_insns (rtl_dump_file);
close_dump_file (DFI_sched2, print_rtl_with_bb, insns);
= optimize > 0 && only_leaf_regs_used () && leaf_function_p ();
#endif
- if (optimize > 0 && flag_reorder_blocks)
- {
- timevar_push (TV_REORDER_BLOCKS);
- open_dump_file (DFI_bbro, decl);
-
- reorder_basic_blocks ();
+#ifdef STACK_REGS
+ timevar_push (TV_REG_STACK);
+ open_dump_file (DFI_stack, decl);
- close_dump_file (DFI_bbro, print_rtl_with_bb, insns);
- timevar_pop (TV_REORDER_BLOCKS);
- }
+ reg_to_stack (insns, rtl_dump_file);
- /* One more attempt to remove jumps to .+1 left by dead-store elimination.
- Also do cross-jumping this time and delete no-op move insns. */
+ close_dump_file (DFI_stack, print_rtl, insns);
+ timevar_pop (TV_REG_STACK);
+ ggc_collect ();
+#endif
if (optimize > 0)
{
- timevar_push (TV_JUMP);
- open_dump_file (DFI_jump2, decl);
-
- jump_optimize (insns, JUMP_CROSS_JUMP, JUMP_NOOP_MOVES,
- !JUMP_AFTER_REGSCAN);
+ timevar_push (TV_REORDER_BLOCKS);
+ open_dump_file (DFI_bbro, decl);
- /* CFG no longer kept up to date. */
+ /* Last attempt to optimize CFG, as life analyzis possibly removed
+ some instructions. */
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK
+ | CLEANUP_CROSSJUMP);
+ if (flag_reorder_blocks)
+ {
+ reorder_basic_blocks ();
+ cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK);
+ }
- close_dump_file (DFI_jump2, print_rtl, insns);
- timevar_pop (TV_JUMP);
+ close_dump_file (DFI_bbro, print_rtl_with_bb, insns);
+ timevar_pop (TV_REORDER_BLOCKS);
}
+ compute_alignments ();
/* 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
+ /* CFG no longer kept up to date. */
+
+ purge_line_number_notes (insns);
+ cleanup_barriers ();
+
/* If a scheduling pass for delayed branches is to be done,
call the scheduling code. */
}
#endif
- /* Shorten branches.
-
- Note this must run before reg-stack because of death note (ab)use
- in the ia32 backend. */
+#if defined (HAVE_ATTR_length) && !defined (STACK_REGS)
timevar_push (TV_SHORTEN_BRANCH);
- shorten_branches (get_insns ());
+ split_all_insns_noflow ();
timevar_pop (TV_SHORTEN_BRANCH);
+#endif
-#ifdef STACK_REGS
- timevar_push (TV_REG_STACK);
- open_dump_file (DFI_stack, decl);
-
- reg_to_stack (insns, rtl_dump_file);
+ convert_to_eh_region_ranges ();
- close_dump_file (DFI_stack, print_rtl, insns);
- timevar_pop (TV_REG_STACK);
-
- ggc_collect ();
-#endif
+ /* Shorten branches. */
+ timevar_push (TV_SHORTEN_BRANCH);
+ shorten_branches (get_insns ());
+ timevar_pop (TV_SHORTEN_BRANCH);
current_function_nothrow = nothrow_function_p ();
if (current_function_nothrow)
assemble_start_function (decl, fnname);
final_start_function (insns, asm_out_file, optimize);
final (insns, asm_out_file, optimize, 0);
- final_end_function (insns, asm_out_file, optimize);
+ 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);
generated. During that call, we *will* be routed past here. */
timevar_push (TV_SYMOUT);
-#ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- dbxout_function (decl);
-#endif
-
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- dwarfout_file_scope_decl (decl, 0);
-#endif
-
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_decl (decl);
-#endif
+ (*debug_hooks->function_decl) (decl);
timevar_pop (TV_SYMOUT);
exit_rest_of_compilation:
/* We're done with this function. Free up memory if we can. */
free_after_parsing (cfun);
if (! DECL_DEFER_OUTPUT (decl))
- free_after_compilation (cfun);
+ {
+ free_after_compilation (cfun);
+
+ /* Clear integrate.c's pointer to the cfun structure we just
+ destroyed. */
+ DECL_SAVED_INSNS (decl) = 0;
+ }
cfun = 0;
ggc_collect ();
if (description != NULL && * description != 0)
printf (" -f%-21s %s\n",
- f_options[i].string, description);
+ f_options[i].string, _(description));
}
printf (_(" -O[number] Set optimisation level to [number]\n"));
printf (_(" -Os Optimise for space rather than speed\n"));
- printf (_(" --param <name>=<value> Set constant controlling optimization\n"));
+ for (i = LAST_PARAM; i--;)
+ {
+ const char *description = compiler_params[i].help;
+ const int length = 21-strlen(compiler_params[i].option);
+
+ if (description != NULL && * description != 0)
+ printf (" --param %s=<value>%.*s%s\n",
+ compiler_params[i].option,
+ length > 0 ? length : 1, " ",
+ _(description));
+ }
printf (_(" -pedantic Issue warnings needed by strict compliance to ISO C\n"));
printf (_(" -pedantic-errors Like -pedantic except that errors are produced\n"));
printf (_(" -w Suppress warnings\n"));
if (description != NULL && * description != 0)
printf (" -W%-21s %s\n",
- W_options[i].string, description);
+ W_options[i].string, _(description));
}
printf (_(" -Wunused Enable unused warnings\n"));
- printf (_(" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n"));
printf (_(" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n"));
printf (_(" -p Enable function profiling\n"));
#if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER)
{
if (debug_args[i].description != NULL)
printf (" -g%-21s %s\n",
- debug_args[i].arg, debug_args[i].description);
+ debug_args[i].arg, _(debug_args[i].description));
}
- printf (_(" -aux-info <file> Emit declaration info into <file>.X\n"));
+ printf (_(" -aux-info <file> Emit declaration info into <file>\n"));
printf (_(" -quiet Do not display functions compiled or elapsed time\n"));
printf (_(" -version Display the compiler's version\n"));
printf (_(" -d[letters] Enable dumps from specific passes of the compiler\n"));
lang = description;
}
else
- printf (" %-23.23s %s\n", option, description);
+ printf (" %-23.23s %s\n", option, _(description));
}
}
printf (_(" -m%-23.23s [undocumented]\n"), option);
}
else if (* description != 0)
- doc += printf (" -m%-23.23s %s\n", option, description);
+ doc += printf (" -m%-23.23s %s\n", option, _(description));
}
#ifdef TARGET_OPTIONS
printf (_(" -m%-23.23s [undocumented]\n"), option);
}
else if (* description != 0)
- doc += printf (" -m%-23.23s %s\n", option, description);
+ doc += printf (" -m%-23.23s %s\n", option, _(description));
}
#endif
if (undoc)
switch (c = *arg++)
{
case 'a':
- for (i = 0; i < DFI_MAX; ++i)
+ for (i = 0; i < (int) DFI_MAX; ++i)
dump_file[i].enabled = 1;
break;
case 'A':
flag_debug_asm = 1;
break;
- case 'm':
- flag_print_mem = 1;
- break;
case 'p':
flag_print_asm_name = 1;
break;
default:
matched = 0;
- for (i = 0; i < DFI_MAX; ++i)
+ for (i = 0; i < (int) DFI_MAX; ++i)
if (c == dump_file[i].debug_switch)
{
dump_file[i].enabled = 1;
}
}
- if ((option_value = skip_leading_substring (arg, "inline-limit-"))
- || (option_value = skip_leading_substring (arg, "inline-limit=")))
+ if (!strcmp (arg, "fast-math"))
+ set_fast_math_flags();
+ else if (!strcmp (arg, "no-fast-math"))
+ set_no_fast_math_flags();
+ else if ((option_value = skip_leading_substring (arg, "inline-limit-"))
+ || (option_value = skip_leading_substring (arg, "inline-limit=")))
{
- int val =
+ 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, "message-length=")))
- diagnostic_message_length_per_line =
- read_integral_parameter (option_value, arg - 2,
- diagnostic_message_length_per_line);
+ 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"))
- set_message_prefixing_rule (DIAGNOSTICS_SHOW_PREFIX_ONCE);
+ diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
else if (!strcmp (option_value, "every-line"))
- set_message_prefixing_rule (DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE);
+ diagnostic_prefixing_rule (global_dc)
+ = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE;
else
error ("Unrecognized option `%s'", arg - 2);
}
}
if ((option_value = skip_leading_substring (arg, "id-clash-")))
- {
- id_clash_len = read_integral_parameter (option_value, arg - 2, -1);
-
- if (id_clash_len != -1)
- warn_id_clash = 1;
- }
+ 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);
decode_g_option (arg)
const char *arg;
{
- unsigned level;
+ static unsigned level=0;
/* A lot of code assumes write_symbols == NO_DEBUG if the
debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
of what debugging type has been selected). This records the
if (*p)
level = read_integral_parameter (p, 0, max_debug_level + 1);
else
- level = 2;
+ level = (level == 0) ? 2 : level;
if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len))
{
arg = argv[1];
/* Look for the `='. */
equal = strchr (arg, '=');
- if (!equal)
+ if (!equal)
error ("invalid --param option: %s", arg);
- else
+ else
{
int val;
return 2;
}
-
+
if (*arg == 'Y')
arg++;
}
else if (!strncmp (arg, "aux-info", 8))
{
- flag_gen_aux_info = 1;
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
- aux_info_file_name = arg + 8;
+ return 0;
}
else
return 0;
return 1;
}
\f
-/* Entry point of cc1/c++. Decode command args, then call compile_file.
- Exit code is 35 if can't open files, 34 if fatal error,
- 33 if had nonfatal errors, else success. */
+/* 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
+ any errors, or SUCCESS_EXIT_CODE if compilation succeeded.
-extern int main PARAMS ((int, char **));
+ It is not safe to call this function more than once. */
int
-main (argc, argv)
+toplev_main (argc, argv)
int argc;
char **argv;
{
ggc_add_tree_root (¤t_function_func_begin_label, 1);
/* Initialize the diagnostics reporting machinery. */
- initialize_diagnostics ();
+ diagnostic_initialize (global_dc);
/* Register the language-independent parameters. */
add_params (lang_independent_params, LAST_PARAM);
/* Perform normal command line switch decoding. */
for (i = 1; i < argc;)
{
- unsigned int lang_processed;
- unsigned int indep_processed;
+ 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);
- /* 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);
+ 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);
if (exit_after_options)
exit (0);
- /* Reflect any language-specific diagnostic option setting. */
- reshape_diagnostic_buffer ();
-
/* Checker uses the frame pointer. */
if (flag_check_memory_usage)
flag_omit_frame_pointer = 0;
warning ("-Wuninitialized is not supported without -O");
}
+ /* We do not currently support sibling-call optimization in the
+ presence of exceptions. See PR2975 for a test-case that will
+ fail if we try to combine both of these features. */
+ if (flag_exceptions)
+ flag_optimize_sibling_calls = 0;
+
#ifdef OVERRIDE_OPTIONS
/* Some machines may reject certain combinations of options. */
OVERRIDE_OPTIONS;
#endif
- if (exceptions_via_longjmp == 2)
- {
-#ifdef DWARF2_UNWIND_INFO
- exceptions_via_longjmp = ! DWARF2_UNWIND_INFO;
-#else
-#ifdef IA64_UNWIND_INFO
- exceptions_via_longjmp = ! IA64_UNWIND_INFO;
-#else
- exceptions_via_longjmp = 1;
-#endif
-#endif
- }
-
- /* Since each function gets its own handler data, we can't support the
- new model currently, since it depend on a specific rethrow label
- which is declared at the front of the table, and we can only
- have one such symbol in a file. */
-#ifdef IA64_UNWIND_INFO
- flag_new_exceptions = 0;
-#endif
-
/* Set up the align_*_log variables, defaulting them to 1 if they
were still unset. */
if (align_loops <= 0) align_loops = 1;
warning ("this target machine does not have delayed branches");
#endif
+ /* Some operating systems do not allow profiling without a frame
+ pointer. */
+ if (!TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER
+ && profile_flag
+ && flag_omit_frame_pointer)
+ {
+ error ("profiling does not work without a frame pointer");
+ flag_omit_frame_pointer = 0;
+ }
+
user_label_prefix = USER_LABEL_PREFIX;
if (flag_leading_underscore != -1)
{
compile_file (filename);
-#if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) && !defined(__INTERIX)
- if (flag_print_mem)
- {
- char *lim = (char *) sbrk (0);
-
- fnotice (stderr, "Data size %ld.\n", (long) (lim - (char *) &environ));
- fflush (stderr);
-
-#ifndef __MSDOS__
-#ifdef USG
- system ("ps -l 1>&2");
-#else /* not USG */
- system ("ps v");
-#endif /* not USG */
-#endif
- }
-#endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) && ! __INTERIX */
-
if (errorcount)
return (FATAL_EXIT_CODE);
if (sorrycount)
fprintf (file, "%s", term);
}
-
-/* Record the beginning of a new source file, named FILENAME. */
-
-void
-debug_start_source_file (filename)
- register const char *filename ATTRIBUTE_UNUSED;
-{
-#ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- dbxout_start_new_source_file (filename);
-#endif
-#ifdef DWARF_DEBUGGING_INFO
- if (debug_info_level == DINFO_LEVEL_VERBOSE
- && write_symbols == DWARF_DEBUG)
- dwarfout_start_new_source_file (filename);
-#endif /* DWARF_DEBUGGING_INFO */
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_start_source_file (filename);
-#endif /* DWARF2_DEBUGGING_INFO */
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_start_new_source_file (filename);
-#endif
-}
-
-/* Record the resumption of a source file. LINENO is the line number in
- the source file we are returning to. */
-
-void
-debug_end_source_file (lineno)
- register unsigned lineno ATTRIBUTE_UNUSED;
-{
-#ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- dbxout_resume_previous_source_file ();
-#endif
-#ifdef DWARF_DEBUGGING_INFO
- if (debug_info_level == DINFO_LEVEL_VERBOSE
- && write_symbols == DWARF_DEBUG)
- dwarfout_resume_previous_source_file (lineno);
-#endif /* DWARF_DEBUGGING_INFO */
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_end_source_file ();
-#endif /* DWARF2_DEBUGGING_INFO */
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_resume_previous_source_file ();
-#endif
-}
-
-/* Called from cb_define in c-lex.c. The `buffer' parameter contains
- the tail part of the directive line, i.e. the part which is past the
- initial whitespace, #, whitespace, directive-name, whitespace part. */
-
-void
-debug_define (lineno, buffer)
- register unsigned lineno ATTRIBUTE_UNUSED;
- register const char *buffer ATTRIBUTE_UNUSED;
-{
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- dwarfout_define (lineno, buffer);
-#endif /* DWARF_DEBUGGING_INFO */
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_define (lineno, buffer);
-#endif /* DWARF2_DEBUGGING_INFO */
-}
-
-/* Called from cb_undef in c-lex.c. The `buffer' parameter contains
- the tail part of the directive line, i.e. the part which is past the
- initial whitespace, #, whitespace, directive-name, whitespace part. */
-
-void
-debug_undef (lineno, buffer)
- register unsigned lineno ATTRIBUTE_UNUSED;
- register const char *buffer ATTRIBUTE_UNUSED;
-{
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- dwarfout_undef (lineno, buffer);
-#endif /* DWARF_DEBUGGING_INFO */
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- dwarf2out_undef (lineno, buffer);
-#endif /* DWARF2_DEBUGGING_INFO */
-}
-
-/* Returns nonzero if it is appropriate not to emit any debugging
- information for BLOCK, because it doesn't contain any instructions.
- This may not be the case for blocks containing nested functions, since
- we may actually call such a function even though the BLOCK information
- is messed up. */
-
-int
-debug_ignore_block (block)
- tree block ATTRIBUTE_UNUSED;
-{
- /* Never delete the BLOCK for the outermost scope
- of the function; we can refer to names from
- that scope even if the block notes are messed up. */
- if (is_body_block (block))
- return 0;
-
-#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
- return dwarf2out_ignore_block (block);
-#endif
-
- return 1;
-}
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