/* 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.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
# include <sys/times.h>
#endif
+#include "line-map.h"
#include "input.h"
#include "tree.h"
#include "rtl.h"
#include "regs.h"
#include "timevar.h"
#include "diagnostic.h"
-#include "ssa.h"
#include "params.h"
#include "reload.h"
#include "dwarf2asm.h"
#include "cgraph.h"
#include "opts.h"
#include "coverage.h"
+#include "value-prof.h"
+#include "alloc-pool.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
declarations for e.g. AIX 4.x. */
#endif
-/* 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 (void);
-
-static void general_init (char *);
+static void general_init (const char *);
static void do_compile (void);
static void process_options (void);
static void backend_init (void);
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;
const char *progname;
-/* Copy of arguments to toplev_main. */
-int save_argc;
-char **save_argv;
+/* 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.
location_t input_location;
+struct line_maps line_table;
+
/* Nonzero if it is unsafe to create any new pseudo registers. */
int no_new_pseudos;
const char *aux_base_name;
-/* Format to use to print dumpfile index value */
-#ifndef DUMPFILE_FORMAT
-#define DUMPFILE_FORMAT ".%02d."
-#endif
-
/* Bit flags that specify the machine subtype we are compiling for.
Bits are tested using macros TARGET_... defined in the tm.h file
and set by `-m...' switches. Must be defined in rtlanal.c. */
/* Debug hooks - dependent upon command line options. */
-const struct gcc_debug_hooks *debug_hooks = &do_nothing_debug_hooks;
-
-/* Describes a dump file. */
-
-struct dump_file_info
-{
- /* The unique extension to apply, e.g. ".jump". */
- const char *const extension;
-
- /* The -d<c> character that enables this dump file. */
- char const debug_switch;
-
- /* True if there is a corresponding graph dump file. */
- char const graph_dump_p;
-
- /* True if the user selected this dump. */
- char enabled;
-
- /* True if the files have been initialized (ie truncated). */
- char initialized;
-};
-
-/* Enumerate the extant dump files. */
-
-enum dump_file_index
-{
- DFI_rtl,
- DFI_sibling,
- DFI_eh,
- DFI_jump,
- DFI_ssa,
- DFI_ssa_ccp,
- DFI_ssa_dce,
- DFI_ussa,
- DFI_null,
- DFI_cse,
- DFI_addressof,
- DFI_gcse,
- DFI_loop,
- DFI_bypass,
- DFI_cfg,
- DFI_bp,
- DFI_ce1,
- DFI_tracer,
- DFI_loop2,
- DFI_cse2,
- DFI_life,
- DFI_combine,
- DFI_ce2,
- DFI_regmove,
- DFI_sched,
- DFI_lreg,
- DFI_greg,
- DFI_postreload,
- DFI_flow2,
- DFI_peephole2,
- DFI_rnreg,
- DFI_bbro,
- DFI_ce3,
- DFI_branch_target_load,
- DFI_sched2,
- DFI_stack,
- DFI_mach,
- DFI_dbr,
- DFI_MAX
-};
-
-/* Describes all the dump files. Should be kept in order of the
- pass and in sync with dump_file_index above.
-
- Remaining -d letters:
-
- " m q "
- " JK O Q UV YZ"
-*/
-
-static 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 },
- { "ssa", 'e', 1, 0, 0 },
- { "ssaccp", 'W', 1, 0, 0 },
- { "ssadce", 'X', 1, 0, 0 },
- { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "null", 'u', 0, 0, 0 },
- { "cse", 's', 0, 0, 0 },
- { "addressof", 'F', 0, 0, 0 },
- { "gcse", 'G', 1, 0, 0 },
- { "loop", 'L', 1, 0, 0 },
- { "bypass", 'G', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "cfg", 'f', 1, 0, 0 },
- { "bp", 'b', 1, 0, 0 },
- { "ce1", 'C', 1, 0, 0 },
- { "tracer", 'T', 1, 0, 0 },
- { "loop2", 'L', 1, 0, 0 },
- { "cse2", 't', 1, 0, 0 },
- { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */
- { "combine", 'c', 1, 0, 0 },
- { "ce2", 'C', 1, 0, 0 },
- { "regmove", 'N', 1, 0, 0 },
- { "sched", 'S', 1, 0, 0 },
- { "lreg", 'l', 1, 0, 0 },
- { "greg", 'g', 1, 0, 0 },
- { "postreload", 'o', 1, 0, 0 },
- { "flow2", 'w', 1, 0, 0 },
- { "peephole2", 'z', 1, 0, 0 },
- { "rnreg", 'n', 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 (enum dump_file_index, tree);
-static void close_dump_file (enum dump_file_index,
- void (*) (FILE *, rtx), rtx);
+const struct gcc_debug_hooks *debug_hooks;
/* Other flags saying which kinds of debugging dump have been requested. */
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
- types of debugging information. */
-enum debug_info_type write_symbols = NO_DEBUG;
-
-/* Level of debugging information we are producing. See flags.h
- for the definitions of the different possible levels. */
-enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
-
-/* Nonzero means use GNU-only extensions in the generated symbolic
- debugging information. */
-/* Currently, this only has an effect when write_symbols is set to
- DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
-int use_gnu_debug_info_extensions = 0;
-
/* Nonzero means do optimizations. -O.
Particular numeric values stand for particular amounts of optimization;
thus, -O2 stores 2 here. However, the optimizations beyond the basic
int flag_profile_values = 0;
+/* Nonzero if value histograms should be used to optimize code. */
+int flag_value_profile_transformations = 0;
+
/* Nonzero if generating info for gcov to calculate line test coverage. */
int flag_test_coverage = 0;
int flag_reorder_blocks = 0;
+/* Nonzero if blocks should be partitioned into hot and cold sections in
+ addition to being reordered. */
+
+int flag_reorder_blocks_and_partition = 0;
+
/* Nonzero if functions should be reordered. */
int flag_reorder_functions = 0;
and to print them when we are done. */
int flag_detailed_statistics = 0;
+/* A random sequence of characters, unless overridden by user. */
+const char *flag_random_seed;
+
+/* A local time stamp derived from the time of compilation. It will be
+ zero if the system cannot provide a time. It will be -1u, if the
+ user has specified a particular random seed. */
+unsigned local_tick;
+
/* -f flags. */
/* Nonzero means `char' should be signed. */
be saved across function calls, if that produces overall better code.
Optional now, so people can test it. */
-#ifdef DEFAULT_CALLER_SAVES
-int flag_caller_saves = 1;
-#else
int flag_caller_saves = 0;
-#endif
/* Nonzero if structures and unions should be returned in memory.
int flag_regmove = 0;
-/* Nonzero for -fwritable-strings:
- store string constants in data segment and don't uniquize them. */
-
-int flag_writable_strings = 0;
-
/* Nonzero means don't put addresses of constant functions in registers.
Used for compiling the Unix kernel, where strange substitutions are
done on the assembly output. */
int flag_trapping_math = 1;
+/* Nonzero means disable transformations that assume default floating
+ point rounding behavior. */
+
+int flag_rounding_math = 0;
+
/* Nonzero means disable transformations observable by signaling NaNs.
This option implies that any operation on an IEEE signaling NaN can
generate a (user-visible) trap. */
int flag_syntax_only = 0;
+/* Nonzero means performs web construction pass. */
+
+int flag_web;
+
/* Nonzero means perform loop optimizer. */
int flag_loop_optimize;
int flag_gcse_sm = 1;
+/* Nonzero if we want to perform redundant load after store elimination
+ in gcse. */
+
+int flag_gcse_las = 1;
+
+/* Nonzero means perform global cse after register allocation. */
+int flag_gcse_after_reload = 0;
+
/* Perform target register optimization before prologue / epilogue
threading. */
int flag_branch_target_load_optimize2 = 0;
+/* For the bt-load pass, nonzero means don't re-use branch target registers
+ in any basic block. */
+
+int flag_btr_bb_exclusive;
+
/* Nonzero means to rerun cse after loop optimization. This increases
compilation time about 20% and picks up a few more common expressions. */
int flag_schedule_speculative_load = 0;
int flag_schedule_speculative_load_dangerous = 0;
+/* The following flags have an effect during scheduling after register
+ allocation:
+
+ flag_sched_stalled_insns means that insns can be moved prematurely from the queue
+ of stalled insns into the ready list.
+
+ flag_sched_stalled_insns_dep controls how many insn groups will be examined
+ for a dependency on a stalled insn that is candidate for premature removal
+ from the queue of stalled insns into the ready list (has an effect only if
+ the flag 'sched_stalled_insns' is set). */
+
+int flag_sched_stalled_insns = 0;
+int flag_sched_stalled_insns_dep = 1;
+
int flag_single_precision_constant;
/* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple
int flag_dump_rtl_in_asm = 0;
-/* -fgnu-linker specifies use of the GNU linker for initializations.
- (Or, more generally, a linker that handles initializations.)
- -fno-gnu-linker says that collect2 will be used. */
-#ifdef USE_COLLECT2
-int flag_gnu_linker = 0;
-#else
-int flag_gnu_linker = 1;
-#endif
-
/* Nonzero means put zero initialized data in the bss section. */
int flag_zero_initialized_in_bss = 1;
-/* Enable SSA. */
-int flag_ssa = 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;
int flag_unit_at_a_time = 0;
+/* Nonzero if we should track variables. When
+ flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING it will be set according
+ to optimize, debug_info_level and debug_hooks in process_options (). */
+
+#define AUTODETECT_FLAG_VAR_TRACKING 2
+int flag_var_tracking = AUTODETECT_FLAG_VAR_TRACKING;
+
/* Values of the -falign-* flags: how much to align labels in code.
0 means `use default', 1 means `don't align'.
For each variable, there is an _log variant which is the power
minimum function alignment. Zero means no alignment is forced. */
int force_align_functions_log;
-/* Table of supported debugging formats. */
-static const struct
-{
- const char *const arg;
- /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
- constant expression, we use NO_DEBUG in its place. */
- const enum debug_info_type debug_type;
- const int use_extensions_p;
- const char *const description;
-} *da,
-debug_args[] =
-{
- { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS,
- 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, 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, N_("Generate DWARF-1 format debug info") },
- { "dwarf+", DWARF_DEBUG, 1,
- N_("Generate extended DWARF-1 format debug info") },
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") },
-#endif
-#ifdef XCOFF_DEBUGGING_INFO
- { "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, N_("Generate COFF format debug info") },
-#endif
-#ifdef VMS_DEBUGGING_INFO
- { "vms", VMS_DEBUG, 0, N_("Generate VMS format debug info") },
-#endif
- { 0, 0, 0, 0 }
-};
-
typedef struct
{
const char *const string;
int *const variable;
const int on_value;
- const char *const description;
}
lang_independent_options;
/* Nonzero if signed arithmetic overflow should wrap around. */
int flag_wrapv = 0;
+/* Nonzero if subexpressions must be evaluated from left-to-right. */
+int flag_evaluation_order = 0;
+
/* Add or remove a leading underscore from user symbols. */
int flag_leading_underscore = -1;
+/* The version of the C++ ABI in use. The following values are
+ allowed:
+
+ 0: The version of the ABI believed most conformant with the
+ C++ ABI specification. This ABI may change as bugs are
+ discovered and fixed. Therefore, 0 will not necessarily
+ indicate the same ABI in different versions of G++.
+
+ 1: The version of the ABI first used in G++ 3.2.
+
+ 2: The version of the ABI first used in G++ 3.4.
+
+ Additional positive integers will be assigned as new versions of
+ the ABI become the default version of the ABI. */
+
+int flag_abi_version = 2;
+
/* The user symbol prefix after having resolved same. */
const char *user_label_prefix;
static const lang_independent_options f_options[] =
{
- {"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_("Do not store floats in registers") },
- {"defer-pop", &flag_defer_pop, 1,
- N_("Defer popping functions args from stack until later") },
- {"omit-frame-pointer", &flag_omit_frame_pointer, 1,
- N_("When possible do not generate stack frames") },
- {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1,
- N_("Optimize sibling and tail recursive calls") },
- {"tracer", &flag_tracer, 1,
- N_("Perform superblock formation via tail duplication") },
- {"unit-at-a-time", &flag_unit_at_a_time, 1,
- N_("Compile whole compilation unit at a time") },
- {"cse-follow-jumps", &flag_cse_follow_jumps, 1,
- N_("When running CSE, follow jumps to their targets") },
- {"cse-skip-blocks", &flag_cse_skip_blocks, 1,
- N_("When running CSE, follow conditional jumps") },
- {"expensive-optimizations", &flag_expensive_optimizations, 1,
- N_("Perform a number of minor, expensive optimizations") },
- {"thread-jumps", &flag_thread_jumps, 1,
- N_("Perform jump threading optimizations") },
- {"strength-reduce", &flag_strength_reduce, 1,
- N_("Perform strength reduction optimizations") },
- {"unroll-loops", &flag_unroll_loops, 1,
- N_("Perform loop unrolling when iteration count is known") },
- {"unroll-all-loops", &flag_unroll_all_loops, 1,
- N_("Perform loop unrolling for all loops") },
- {"old-unroll-loops", &flag_old_unroll_loops, 1,
- N_("Perform loop unrolling when iteration count is known") },
- {"old-unroll-all-loops", &flag_old_unroll_all_loops, 1,
- N_("Perform loop unrolling for all loops") },
- {"peel-loops", &flag_peel_loops, 1,
- N_("Perform loop peeling") },
- {"unswitch-loops", &flag_unswitch_loops, 1,
- N_("Perform loop unswitching") },
- {"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1,
- N_("Generate prefetch instructions, if available, for arrays in loops") },
- {"move-all-movables", &flag_move_all_movables, 1,
- N_("Force all loop invariant computations out of loops") },
- {"reduce-all-givs", &flag_reduce_all_givs, 1,
- N_("Strength reduce all loop general induction variables") },
- {"writable-strings", &flag_writable_strings, 1,
- N_("Store strings in writable data section") },
- {"peephole", &flag_no_peephole, 0,
- N_("Enable machine specific peephole optimizations") },
- {"force-mem", &flag_force_mem, 1,
- N_("Copy memory operands into registers before using") },
- {"force-addr", &flag_force_addr, 1,
- N_("Copy memory address constants into regs before using") },
- {"function-cse", &flag_no_function_cse, 0,
- N_("Allow function addresses to be held in registers") },
- {"inline-functions", &flag_inline_functions, 1,
- N_("Integrate simple functions into their callers") },
- {"keep-inline-functions", &flag_keep_inline_functions, 1,
- N_("Generate code for funcs even if they are fully inlined") },
- {"inline", &flag_no_inline, 0,
- N_("Pay attention to the 'inline' keyword") },
- {"keep-static-consts", &flag_keep_static_consts, 1,
- N_("Emit static const variables even if they are not used") },
- {"syntax-only", &flag_syntax_only, 1,
- N_("Check for syntax errors, then stop") },
- {"shared-data", &flag_shared_data, 1,
- N_("Mark data as shared rather than private") },
- {"caller-saves", &flag_caller_saves, 1,
- N_("Enable saving registers around function calls") },
- {"pcc-struct-return", &flag_pcc_struct_return, 1,
- N_("Return 'short' aggregates in memory, not registers") },
- {"reg-struct-return", &flag_pcc_struct_return, 0,
- N_("Return 'short' aggregates in registers") },
- {"delayed-branch", &flag_delayed_branch, 1,
- N_("Attempt to fill delay slots of branch instructions") },
- {"gcse", &flag_gcse, 1,
- 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") },
- {"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,
- N_("Perform cross-jumping optimization") },
- {"if-conversion", &flag_if_conversion, 1,
- N_("Perform conversion of conditional jumps to branchless equivalents") },
- {"if-conversion2", &flag_if_conversion2, 1,
- N_("Perform conversion of conditional jumps to conditional execution") },
- {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1,
- N_("Run CSE pass after loop optimizations") },
- {"rerun-loop-opt", &flag_rerun_loop_opt, 1,
- N_("Run the loop optimizer twice") },
- {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1,
- N_("Delete useless null pointer checks") },
- {"schedule-insns", &flag_schedule_insns, 1,
- N_("Reschedule instructions before register allocation") },
- {"schedule-insns2", &flag_schedule_insns_after_reload, 1,
- N_("Reschedule instructions after register allocation") },
- {"sched-interblock",&flag_schedule_interblock, 1,
- N_("Enable scheduling across basic blocks") },
- {"sched-spec",&flag_schedule_speculative, 1,
- N_("Allow speculative motion of non-loads") },
- {"sched-spec-load",&flag_schedule_speculative_load, 1,
- N_("Allow speculative motion of some loads") },
- {"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 scheduling") },
- {"sched2-use-traces", &flag_sched2_use_traces, 1,
- 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,
- N_("Just generate unwind tables for exception handling") },
- {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1,
- N_("Generate unwind tables exact at each instruction boundary") },
- {"non-call-exceptions", &flag_non_call_exceptions, 1,
- N_("Support synchronous non-call exceptions") },
- {"profile-arcs", &profile_arc_flag, 1,
- N_("Insert arc based program profiling code") },
- {"test-coverage", &flag_test_coverage, 1,
- N_("Create data files needed by gcov") },
- {"branch-probabilities", &flag_branch_probabilities, 1,
- N_("Use profiling information for branch probabilities") },
- {"profile", &profile_flag, 1,
- N_("Enable basic program profiling code") },
- {"reorder-blocks", &flag_reorder_blocks, 1,
- N_("Reorder basic blocks to improve code placement") },
- {"reorder-functions", &flag_reorder_functions, 1,
- N_("Reorder functions to improve code placement") },
- {"rename-registers", &flag_rename_registers, 1,
- N_("Do the register renaming optimization pass") },
- {"cprop-registers", &flag_cprop_registers, 1,
- N_("Do the register copy-propagation optimization pass") },
- {"common", &flag_no_common, 0,
- N_("Do not put uninitialized globals in the common section") },
- {"inhibit-size-directive", &flag_inhibit_size_directive, 1,
- N_("Do not generate .size directives") },
- {"function-sections", &flag_function_sections, 1,
- N_("place each function into its own section") },
- {"data-sections", &flag_data_sections, 1,
- N_("place data items into their own section") },
- {"verbose-asm", &flag_verbose_asm, 1,
- N_("Add extra commentary to assembler output") },
- {"gnu-linker", &flag_gnu_linker, 1,
- N_("Output GNU ld formatted global initializers") },
- {"regmove", &flag_regmove, 1,
- N_("Enables a register move optimization") },
- {"optimize-register-move", &flag_regmove, 1,
- N_("Do the full regmove optimization pass") },
- {"pack-struct", &flag_pack_struct, 1,
- N_("Pack structure members together without holes") },
- {"stack-check", &flag_stack_check, 1,
- N_("Insert stack checking code into the program") },
- {"argument-alias", &flag_argument_noalias, 0,
- N_("Specify that arguments may alias each other & globals") },
- {"argument-noalias", &flag_argument_noalias, 1,
- N_("Assume arguments may alias globals but not each other") },
- {"argument-noalias-global", &flag_argument_noalias, 2,
- N_("Assume arguments do not alias each other or globals") },
- {"strict-aliasing", &flag_strict_aliasing, 1,
- N_("Assume strict aliasing rules apply") },
- {"align-loops", &align_loops, 0,
- N_("Align the start of loops") },
- {"align-jumps", &align_jumps, 0,
- N_("Align labels which are only reached by jumping") },
- {"align-labels", &align_labels, 0,
- N_("Align all labels") },
- {"align-functions", &align_functions, 0,
- N_("Align the start of functions") },
- {"merge-constants", &flag_merge_constants, 1,
- 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_("Suppress output of instruction numbers and line number notes in debugging dumps") },
- {"instrument-functions", &flag_instrument_function_entry_exit, 1,
- N_("Instrument function entry/exit with profiling calls") },
- {"zero-initialized-in-bss", &flag_zero_initialized_in_bss, 1,
- N_("Put zero initialized data in the bss section") },
- {"ssa", &flag_ssa, 1,
- N_("Enable SSA optimizations") },
- {"ssa-ccp", &flag_ssa_ccp, 1,
- N_("Enable SSA conditional constant propagation") },
- {"ssa-dce", &flag_ssa_dce, 1,
- N_("Enable aggressive SSA dead code elimination") },
- {"leading-underscore", &flag_leading_underscore, 1,
- N_("External symbols have a leading underscore") },
- {"ident", &flag_no_ident, 0,
- N_("Process #ident directives") },
- { "peephole2", &flag_peephole2, 1,
- N_("Enables an rtl peephole pass run before sched2") },
- {"finite-math-only", &flag_finite_math_only, 1,
- N_("Assume no NaNs or +-Infs are generated") },
- { "guess-branch-probability", &flag_guess_branch_prob, 1,
- N_("Enables guessing of branch probabilities") },
- {"math-errno", &flag_errno_math, 1,
- 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") },
- {"signaling-nans", &flag_signaling_nans, 1,
- N_("Disable optimizations observable by IEEE signaling NaNs") },
- {"bounds-check", &flag_bounds_check, 1,
- N_("Generate code to check bounds before indexing arrays") },
- {"single-precision-constant", &flag_single_precision_constant, 1,
- N_("Convert floating point constant to single precision constant") },
- {"time-report", &time_report, 1,
- N_("Report time taken by each compiler pass at end of run") },
- {"mem-report", &mem_report, 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.") },
-};
-
-/* Table of language-specific options. */
-
-static const struct lang_opt
-{
- const char *const option;
- const char *const description;
-}
-documented_lang_options[] =
-{
- /* In order not to overload the --help output, the convention
- used here is to only describe those options which are not
- enabled by default. */
-
- { "-ansi",
- N_("Compile just for ISO C90") },
- { "-std= ",
- N_("Determine language standard") },
-
- { "-fsigned-bitfields", "" },
- { "-funsigned-bitfields",
- N_("Make bit-fields by unsigned by default") },
- { "-fno-signed-bitfields", "" },
- { "-fno-unsigned-bitfields","" },
- { "-fsigned-char",
- N_("Make 'char' be signed by default") },
- { "-funsigned-char",
- N_("Make 'char' be unsigned by default") },
- { "-fno-signed-char", "" },
- { "-fno-unsigned-char", "" },
-
- { "-fasm", "" },
- { "-fno-asm",
- N_("Do not recognize the 'asm' keyword") },
- { "-fbuiltin", "" },
- { "-fno-builtin",
- N_("Do not recognize any built in functions") },
- { "-fhosted",
- N_("Assume normal C execution environment") },
- { "-fno-hosted", "" },
- { "-ffreestanding",
- N_("Assume that standard libraries & main might not exist") },
- { "-fno-freestanding", "" },
- { "-fcond-mismatch",
- N_("Allow different types as args of ? operator") },
- { "-fno-cond-mismatch", "" },
- { "-fdollars-in-identifiers",
- N_("Allow the use of $ inside identifiers") },
- { "-fno-dollars-in-identifiers", "" },
- { "-fpreprocessed", "" },
- { "-fno-preprocessed", "" },
- { "-fshort-double",
- N_("Use the same size for double as for float") },
- { "-fno-short-double", "" },
- { "-fshort-enums",
- N_("Use the smallest fitting integer to hold enums") },
- { "-fno-short-enums", "" },
- { "-fshort-wchar",
- N_("Override the underlying type for wchar_t to `unsigned short'") },
- { "-fno-short-wchar", "" },
-
- { "-Wall",
- N_("Enable most warning messages") },
- { "-Wbad-function-cast",
- N_("Warn about casting functions to incompatible types") },
- { "-Wno-bad-function-cast", "" },
- { "-Wmissing-format-attribute",
- N_("Warn about functions which might be candidates for format attributes") },
- { "-Wno-missing-format-attribute", "" },
- { "-Wcast-qual",
- N_("Warn about casts which discard qualifiers") },
- { "-Wno-cast-qual", "" },
- { "-Wchar-subscripts",
- N_("Warn about subscripts whose type is 'char'") },
- { "-Wno-char-subscripts", "" },
- { "-Wcomment",
- N_("Warn if nested comments are detected") },
- { "-Wno-comment", "" },
- { "-Wcomments",
- N_("Warn if nested comments are detected") },
- { "-Wno-comments", "" },
- { "-Wconversion",
- N_("Warn about possibly confusing type conversions") },
- { "-Wno-conversion", "" },
- { "-Wdiv-by-zero", "" },
- { "-Wno-div-by-zero",
- N_("Do not warn about compile-time integer division by zero") },
- { "-Wfloat-equal",
- N_("Warn about testing equality of floating point numbers") },
- { "-Wno-float-equal", "" },
- { "-Wformat",
- N_("Warn about printf/scanf/strftime/strfmon format anomalies") },
- { "-Wno-format", "" },
- { "-Wformat-extra-args", "" },
- { "-Wno-format-extra-args",
- 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",
- N_("Warn about possible security problems with format functions") },
- { "-Wno-format-security", "" },
- { "-Wformat-y2k", "" },
- { "-Wno-format-y2k",
- N_("Don't warn about strftime formats yielding 2 digit years") },
- { "-Wimplicit-function-declaration",
- N_("Warn about implicit function declarations") },
- { "-Wno-implicit-function-declaration", "" },
- { "-Werror-implicit-function-declaration", "" },
- { "-Wimplicit-int",
- N_("Warn when a declaration does not specify a type") },
- { "-Wno-implicit-int", "" },
- { "-Wimplicit", "" },
- { "-Wno-implicit", "" },
- { "-Wimport",
- N_("Warn about the use of the #import directive") },
- { "-Wno-import", "" },
- { "-Winvalid-pch",
- N_("Warn about PCH files that are found but not used") },
- { "-Wlong-long","" },
- { "-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",
- N_("Warn about possibly missing braces around initializers") },
- { "-Wno-missing-braces", "" },
- { "-Wmissing-declarations",
- N_("Warn about global funcs without previous declarations") },
- { "-Wno-missing-declarations", "" },
- { "-Wmissing-prototypes",
- N_("Warn about global funcs without prototypes") },
- { "-Wno-missing-prototypes", "" },
- { "-Wmultichar",
- N_("Warn about use of multicharacter literals") },
- { "-Wno-multichar", "" },
- { "-Wnested-externs",
- N_("Warn about externs not at file scope level") },
- { "-Wno-nested-externs", "" },
- { "-Wparentheses",
- N_("Warn about possible missing parentheses") },
- { "-Wno-parentheses", "" },
- { "-Wpointer-arith",
- N_("Warn about function pointer arithmetic") },
- { "-Wno-pointer-arith", "" },
- { "-Wredundant-decls",
- N_("Warn about multiple declarations of the same object") },
- { "-Wno-redundant-decls", "" },
- { "-Wreturn-type",
- N_("Warn whenever a function's return-type defaults to int") },
- { "-Wno-return-type", "" },
- { "-Wsequence-point",
- N_("Warn about possible violations of sequence point rules") },
- { "-Wno-sequence-point", "" },
- { "-Wsign-compare",
- N_("Warn about signed/unsigned comparisons") },
- { "-Wno-sign-compare", "" },
- { "-Wstrict-prototypes",
- N_("Warn about non-prototyped function decls") },
- { "-Wno-strict-prototypes", "" },
- { "-Wtraditional",
- N_("Warn about constructs whose meanings change in ISO C") },
- { "-Wno-traditional", "" },
- { "-Wtrigraphs",
- N_("Warn when trigraphs are encountered") },
- { "-Wno-trigraphs", "" },
- { "-Wundef", "" },
- { "-Wno-undef", "" },
- { "-Wunknown-pragmas",
- N_("Warn about unrecognized pragmas") },
- { "-Wno-unknown-pragmas", "" },
- { "-Wwrite-strings",
- N_("Mark strings as 'const char *'") },
- { "-Wno-write-strings", "" },
-
-#define DEFINE_LANG_NAME(NAME) { NULL, NAME },
-
-#include "options_.h"
-
+ {"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1 },
+ {"eliminate-unused-debug-symbols", &flag_debug_only_used_symbols, 1 },
+ {"eliminate-unused-debug-types", &flag_eliminate_unused_debug_types, 1 },
+ {"float-store", &flag_float_store, 1 },
+ {"defer-pop", &flag_defer_pop, 1 },
+ {"omit-frame-pointer", &flag_omit_frame_pointer, 1 },
+ {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1 },
+ {"tracer", &flag_tracer, 1 },
+ {"unit-at-a-time", &flag_unit_at_a_time, 1 },
+ {"cse-follow-jumps", &flag_cse_follow_jumps, 1 },
+ {"cse-skip-blocks", &flag_cse_skip_blocks, 1 },
+ {"expensive-optimizations", &flag_expensive_optimizations, 1 },
+ {"thread-jumps", &flag_thread_jumps, 1 },
+ {"strength-reduce", &flag_strength_reduce, 1 },
+ {"unroll-loops", &flag_unroll_loops, 1 },
+ {"unroll-all-loops", &flag_unroll_all_loops, 1 },
+ {"old-unroll-loops", &flag_old_unroll_loops, 1 },
+ {"old-unroll-all-loops", &flag_old_unroll_all_loops, 1 },
+ {"peel-loops", &flag_peel_loops, 1 },
+ {"unswitch-loops", &flag_unswitch_loops, 1 },
+ {"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1 },
+ {"move-all-movables", &flag_move_all_movables, 1 },
+ {"reduce-all-givs", &flag_reduce_all_givs, 1 },
+ {"peephole", &flag_no_peephole, 0 },
+ {"force-mem", &flag_force_mem, 1 },
+ {"force-addr", &flag_force_addr, 1 },
+ {"function-cse", &flag_no_function_cse, 0 },
+ {"inline-functions", &flag_inline_functions, 1 },
+ {"keep-inline-functions", &flag_keep_inline_functions, 1 },
+ {"inline", &flag_no_inline, 0 },
+ {"keep-static-consts", &flag_keep_static_consts, 1 },
+ {"syntax-only", &flag_syntax_only, 1 },
+ {"shared-data", &flag_shared_data, 1 },
+ {"caller-saves", &flag_caller_saves, 1 },
+ {"pcc-struct-return", &flag_pcc_struct_return, 1 },
+ {"reg-struct-return", &flag_pcc_struct_return, 0 },
+ {"delayed-branch", &flag_delayed_branch, 1 },
+ {"web", &flag_web, 1},
+ {"gcse", &flag_gcse, 1 },
+ {"gcse-lm", &flag_gcse_lm, 1 },
+ {"gcse-sm", &flag_gcse_sm, 1 },
+ {"gcse-las", &flag_gcse_las, 1 },
+ {"gcse-after-reload", &flag_gcse_after_reload, 1},
+ {"branch-target-load-optimize", &flag_branch_target_load_optimize, 1 },
+ {"branch-target-load-optimize2", &flag_branch_target_load_optimize2, 1 },
+ {"btr-bb-exclusive", &flag_btr_bb_exclusive, 1 },
+ {"loop-optimize", &flag_loop_optimize, 1 },
+ {"crossjumping", &flag_crossjumping, 1 },
+ {"if-conversion", &flag_if_conversion, 1 },
+ {"if-conversion2", &flag_if_conversion2, 1 },
+ {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1 },
+ {"rerun-loop-opt", &flag_rerun_loop_opt, 1 },
+ {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1 },
+ {"schedule-insns", &flag_schedule_insns, 1 },
+ {"schedule-insns2", &flag_schedule_insns_after_reload, 1 },
+ {"sched-interblock",&flag_schedule_interblock, 1 },
+ {"sched-spec",&flag_schedule_speculative, 1 },
+ {"sched-spec-load",&flag_schedule_speculative_load, 1 },
+ {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1 },
+ {"sched-stalled-insns", &flag_sched_stalled_insns, 0 },
+ {"sched-stalled-insns-dep", &flag_sched_stalled_insns_dep, 1 },
+ {"sched2-use-superblocks", &flag_sched2_use_superblocks, 1 },
+ {"sched2-use-traces", &flag_sched2_use_traces, 1 },
+ {"branch-count-reg",&flag_branch_on_count_reg, 1 },
+ {"pic", &flag_pic, 1 },
+ {"PIC", &flag_pic, 2 },
+ {"pie", &flag_pie, 1 },
+ {"PIE", &flag_pie, 2 },
+ {"exceptions", &flag_exceptions, 1 },
+ {"unwind-tables", &flag_unwind_tables, 1 },
+ {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1 },
+ {"non-call-exceptions", &flag_non_call_exceptions, 1 },
+ {"profile-arcs", &profile_arc_flag, 1 },
+ {"profile-values", &flag_profile_values, 1 },
+ {"vpt", &flag_value_profile_transformations, 1 },
+ {"test-coverage", &flag_test_coverage, 1 },
+ {"branch-probabilities", &flag_branch_probabilities, 1 },
+ {"profile", &profile_flag, 1 },
+ {"reorder-blocks", &flag_reorder_blocks, 1 },
+ {"reorder-blocks-and-partition", &flag_reorder_blocks_and_partition, 1},
+ {"reorder-functions", &flag_reorder_functions, 1 },
+ {"rename-registers", &flag_rename_registers, 1 },
+ {"cprop-registers", &flag_cprop_registers, 1 },
+ {"common", &flag_no_common, 0 },
+ {"inhibit-size-directive", &flag_inhibit_size_directive, 1 },
+ {"function-sections", &flag_function_sections, 1 },
+ {"data-sections", &flag_data_sections, 1 },
+ {"verbose-asm", &flag_verbose_asm, 1 },
+ {"regmove", &flag_regmove, 1 },
+ {"optimize-register-move", &flag_regmove, 1 },
+ {"pack-struct", &flag_pack_struct, 1 },
+ {"stack-check", &flag_stack_check, 1 },
+ {"argument-alias", &flag_argument_noalias, 0 },
+ {"argument-noalias", &flag_argument_noalias, 1 },
+ {"argument-noalias-global", &flag_argument_noalias, 2 },
+ {"strict-aliasing", &flag_strict_aliasing, 1 },
+ {"align-loops", &align_loops, 0 },
+ {"align-jumps", &align_jumps, 0 },
+ {"align-labels", &align_labels, 0 },
+ {"align-functions", &align_functions, 0 },
+ {"merge-constants", &flag_merge_constants, 1 },
+ {"merge-all-constants", &flag_merge_constants, 2 },
+ {"dump-unnumbered", &flag_dump_unnumbered, 1 },
+ {"instrument-functions", &flag_instrument_function_entry_exit, 1 },
+ {"zero-initialized-in-bss", &flag_zero_initialized_in_bss, 1 },
+ {"leading-underscore", &flag_leading_underscore, 1 },
+ {"ident", &flag_no_ident, 0 },
+ { "peephole2", &flag_peephole2, 1 },
+ {"finite-math-only", &flag_finite_math_only, 1 },
+ { "guess-branch-probability", &flag_guess_branch_prob, 1 },
+ {"math-errno", &flag_errno_math, 1 },
+ {"trapping-math", &flag_trapping_math, 1 },
+ {"rounding-math", &flag_rounding_math, 1 },
+ {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1 },
+ {"signaling-nans", &flag_signaling_nans, 1 },
+ {"bounds-check", &flag_bounds_check, 1 },
+ {"single-precision-constant", &flag_single_precision_constant, 1 },
+ {"time-report", &time_report, 1 },
+ {"mem-report", &mem_report, 1 },
+ { "trapv", &flag_trapv, 1 },
+ { "wrapv", &flag_wrapv, 1 },
+ { "new-ra", &flag_new_regalloc, 1 },
+ { "var-tracking", &flag_var_tracking, 1}
};
/* Here is a table, controlled by the tm.h file, listing each -m switch
target_options[] = TARGET_OPTIONS;
#endif
-/* 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;
-/* 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_dummy, 1,
- N_("Warn when a function is unused") },
- {"unused-label", &warn_dummy, 1,
- N_("Warn when a label is unused") },
- {"unused-parameter", &warn_dummy, 1,
- N_("Warn when a function parameter is unused") },
- {"unused-variable", &warn_dummy, 1,
- N_("Warn when a variable is unused") },
- {"unused-value", &warn_dummy, 1,
- N_("Warn when an expression value is unused") },
- {"system-headers", &warn_dummy, 1,
- N_("Do not suppress warnings from system headers") },
- {"error", &warn_dummy, 1,
- N_("Treat all warnings as errors") },
- {"shadow", &warn_dummy, 1,
- N_("Warn when one local variable shadows another") },
- {"switch", &warn_dummy, 1,
- N_("Warn about enumerated switches, with no default, missing a case") },
- {"switch-default", &warn_dummy, 1,
- N_("Warn about enumerated switches missing a default case") },
- {"switch-enum", &warn_dummy, 1,
- N_("Warn about all enumerated switches missing a specific case") },
- {"aggregate-return", &warn_dummy, 1,
- N_("Warn about returning structures, unions or arrays") },
- {"cast-align", &warn_dummy, 1,
- N_("Warn about pointer casts which increase alignment") },
- {"unreachable-code", &warn_dummy, 1,
- N_("Warn about code that will never be executed") },
- {"uninitialized", &warn_dummy, 1,
- N_("Warn about uninitialized automatic variables") },
- {"inline", &warn_dummy, 1,
- N_("Warn when an inlined function cannot be inlined") },
- {"packed", &warn_dummy, 1,
- N_("Warn when the packed attribute has no effect on struct layout") },
- {"padded", &warn_dummy, 1,
- N_("Warn when padding is required to align struct members") },
- {"disabled-optimization", &warn_dummy, 1,
- N_("Warn when an optimization pass is disabled") },
- {"deprecated-declarations", &warn_dummy, 1,
- N_("Warn about uses of __attribute__((deprecated)) declarations") },
- {"missing-noreturn", &warn_dummy, 1,
- N_("Warn about functions which might be candidates for attribute noreturn") },
- {"strict-aliasing", &warn_dummy, 1,
- N_ ("Warn about code which might break the strict aliasing rules") }
-};
-
/* Output files for assembler code (real compiler output)
and debugging dumps. */
FILE *asm_out_file;
FILE *aux_info_file;
-FILE *rtl_dump_file = NULL;
+FILE *dump_file = NULL;
+FILE *cgraph_dump_file = NULL;
+
+/* The current working directory of a translation. It's generally the
+ directory from which compilation was initiated, but a preprocessed
+ file may specify the original directory in which it was
+ created. */
+
+static const char *src_pwd;
+
+/* Initialize src_pwd with the given string, and return true. If it
+ was already initialized, return false. As a special case, it may
+ be called with a NULL argument to test whether src_pwd has NOT been
+ initialized yet. */
+
+bool
+set_src_pwd (const char *pwd)
+{
+ if (src_pwd)
+ {
+ if (strcmp (src_pwd, pwd) == 0)
+ return true;
+ else
+ return false;
+ }
+
+ src_pwd = xstrdup (pwd);
+ return true;
+}
+
+/* Return the directory from which the translation unit was initiated,
+ in case set_src_pwd() was not called before to assign it a
+ different value. */
+
+const char *
+get_src_pwd (void)
+{
+ if (! src_pwd)
+ src_pwd = getpwd ();
+
+ return src_pwd;
+}
+
+/* Called when the start of a function definition is parsed,
+ this function prints on stderr the name of the function. */
+void
+announce_function (tree decl)
+{
+ if (!quiet_flag)
+ {
+ if (rtl_dump_and_exit)
+ verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
+ else
+ verbatim (" %s", lang_hooks.decl_printable_name (decl, 2));
+ fflush (stderr);
+ pp_needs_newline (global_dc->printer) = true;
+ diagnostic_set_last_function (global_dc);
+ }
+}
+
+/* Set up a default flag_random_seed and local_tick, unless the user
+ already specified one. */
+
+static void
+randomize (void)
+{
+ if (!flag_random_seed)
+ {
+ unsigned HOST_WIDE_INT value;
+ static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
+
+ /* Get some more or less random data. */
+#ifdef HAVE_GETTIMEOFDAY
+ {
+ struct timeval tv;
+
+ gettimeofday (&tv, NULL);
+ local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000;
+ }
+#else
+ {
+ time_t now = time (NULL);
+
+ if (now != (time_t)-1)
+ local_tick = (unsigned) now;
+ }
+#endif
+ value = local_tick ^ getpid ();
+
+ sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
+ flag_random_seed = random_seed;
+ }
+ else if (!local_tick)
+ local_tick = -1;
+}
+
/* Decode the string P as an integral parameter.
If the string is indeed an integer return its numeric value else
#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 *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 (FILE *asm_file, const char *input_name)
{
- int len = strlen (input_name);
- const char *na = input_name + len;
+ int len;
+ const char *na;
+
+ if (input_name == NULL)
+ input_name = "<stdin>";
+
+ len = strlen (input_name);
+ na = input_name + len;
/* NA gets INPUT_NAME sans directory names. */
while (na > input_name)
na--;
}
-#ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
- ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
-#else
#ifdef ASM_OUTPUT_SOURCE_FILENAME
ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
#else
output_quoted_string (asm_file, na);
fputc ('\n', asm_file);
#endif
-#endif
-}
-
-/* Routine to open a dump file. Return true if the dump file is enabled. */
-
-static int
-open_dump_file (enum dump_file_index index, tree decl)
-{
- char *dump_name;
- const char *open_arg;
- char seq[16];
-
- if (! dump_file[index].enabled)
- return 0;
-
- timevar_push (TV_DUMP);
- if (rtl_dump_file != NULL)
- fclose (rtl_dump_file);
-
- sprintf (seq, DUMPFILE_FORMAT, index);
-
- if (! dump_file[index].initialized)
- {
- /* If we've not initialized the files, do so now. */
- if (graph_dump_format != no_graph
- && dump_file[index].graph_dump_p)
- {
- dump_name = concat (seq, dump_file[index].extension, NULL);
- clean_graph_dump_file (dump_base_name, dump_name);
- free (dump_name);
- }
- dump_file[index].initialized = 1;
- open_arg = "w";
- }
- else
- open_arg = "a";
-
- dump_name = concat (dump_base_name, seq,
- dump_file[index].extension, NULL);
-
- rtl_dump_file = fopen (dump_name, open_arg);
- if (rtl_dump_file == NULL)
- fatal_error ("can't open %s: %m", dump_name);
-
- free (dump_name);
-
- if (decl)
- fprintf (rtl_dump_file, "\n;; Function %s%s\n\n",
- (*lang_hooks.decl_printable_name) (decl, 2),
- cfun->function_frequency == FUNCTION_FREQUENCY_HOT
- ? " (hot)"
- : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED
- ? " (unlikely executed)"
- : "");
-
- timevar_pop (TV_DUMP);
- return 1;
-}
-
-/* Routine to close a dump file. */
-
-static void
-close_dump_file (enum dump_file_index index,
- void (*func) (FILE *, rtx),
- rtx insns)
-{
- if (! rtl_dump_file)
- return;
-
- timevar_push (TV_DUMP);
- if (insns
- && graph_dump_format != no_graph
- && dump_file[index].graph_dump_p)
- {
- char seq[16];
- char *suffix;
-
- sprintf (seq, DUMPFILE_FORMAT, index);
- suffix = concat (seq, dump_file[index].extension, NULL);
- print_rtl_graph_with_bb (dump_base_name, suffix, insns);
- free (suffix);
- }
-
- if (func && insns)
- func (rtl_dump_file, insns);
-
- fflush (rtl_dump_file);
- fclose (rtl_dump_file);
-
- rtl_dump_file = NULL;
- timevar_pop (TV_DUMP);
}
/* Do any final processing required for the declarations in VEC, of
DECL_DEFER_OUTPUT (decl) = 0;
if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0)
- (*lang_hooks.finish_incomplete_decl) (decl);
+ lang_hooks.finish_incomplete_decl (decl);
}
/* Now emit any global variables or functions that we have been
if (flag_unit_at_a_time
&& cgraph_varpool_node (decl)->finalized)
needed = 0;
- else if (flag_unit_at_a_time
+ else if ((flag_unit_at_a_time && !cgraph_global_info_ready)
&& (TREE_USED (decl)
|| TREE_USED (DECL_ASSEMBLER_NAME (decl))))
/* needed */;
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_INITIAL (decl) != 0
- && DECL_SAVED_INSNS (decl) != 0
+ && DECL_STRUCT_FUNCTION (decl) != 0
+ && DECL_STRUCT_FUNCTION (decl)->saved_for_inline
&& (flag_keep_inline_functions
|| (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
&& ! TREE_PUBLIC (decl))
{
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- pedwarn_with_decl (decl,
- "`%s' used but never defined");
+ pedwarn ("%J'%F' used but never defined", decl, decl);
else
- warning_with_decl (decl,
- "`%s' declared `static' but never defined");
+ warning ("%J'%F' declared `static' but never defined", decl, decl);
/* This symbol is effectively an "extern" declaration now. */
TREE_PUBLIC (decl) = 1;
assemble_external (decl);
/* Warn about static fns or vars defined but not used. */
if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL)
- || (warn_unused_variable && TREE_CODE (decl) == VAR_DECL))
+ /* We don't warn about "static const" variables because the
+ "rcs_id" idiom uses that construction. */
+ || (warn_unused_variable
+ && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
+ && ! DECL_IN_SYSTEM_HEADER (decl)
&& ! TREE_USED (decl)
/* The TREE_USED bit for file-scope decls is kept in the identifier,
to handle multiple external decls in different scopes. */
/* Global register variables must be declared to reserve them. */
&& ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
/* Otherwise, ask the language. */
- && (*lang_hooks.decls.warn_unused_global) (decl))
- warning_with_decl (decl, "`%s' defined but not used");
+ && lang_hooks.decls.warn_unused_global (decl))
+ warning ("%J'%D' defined but not used", decl, decl);
/* Avoid confusing the debug information machinery when there are
errors. */
}
}
+/* Warn about a use of an identifier which was marked deprecated. */
+void
+warn_deprecated_use (tree node)
+{
+ if (node == 0 || !warn_deprecated_decl)
+ return;
+
+ if (DECL_P (node))
+ warning ("`%s' is deprecated (declared at %s:%d)",
+ IDENTIFIER_POINTER (DECL_NAME (node)),
+ DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
+ else if (TYPE_P (node))
+ {
+ const char *what = NULL;
+ tree decl = TYPE_STUB_DECL (node);
+
+ if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
+ what = IDENTIFIER_POINTER (TYPE_NAME (node));
+ else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
+ && DECL_NAME (TYPE_NAME (node)))
+ what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node)));
+
+ if (what)
+ {
+ if (decl)
+ warning ("`%s' is deprecated (declared at %s:%d)", what,
+ DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
+ else
+ warning ("`%s' is deprecated", what);
+ }
+ else if (decl)
+ warning ("type is deprecated (declared at %s:%d)",
+ DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
+ else
+ warning ("type is deprecated");
+ }
+}
+
/* Save the current INPUT_LOCATION on the top entry in the
INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the
INPUT_LOCATION accordingly. */
{
struct file_stack *fs;
- fs = (struct file_stack *) xmalloc (sizeof (struct file_stack));
+ fs = xmalloc (sizeof (struct file_stack));
fs->location = input_location;
fs->next = input_file_stack;
input_filename = file;
/* Call the parser, which parses the entire file (calling
rest_of_compilation for each function). */
- (*lang_hooks.parse_file) (set_yydebug);
+ lang_hooks.parse_file (set_yydebug);
/* In case there were missing block closers,
get us back to the global binding level. */
- (*lang_hooks.clear_binding_stack) ();
+ lang_hooks.clear_binding_stack ();
/* Compilation is now finished except for writing
what's left of the symbol table output. */
if (flag_syntax_only)
return;
- (*lang_hooks.decls.final_write_globals)();
+ lang_hooks.decls.final_write_globals ();
cgraph_varpool_assemble_pending_decls ();
dw2_output_indirect_constants ();
- if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- {
- timevar_push (TV_DUMP);
- open_dump_file (DFI_bp, NULL);
-
- end_branch_prob ();
-
- close_dump_file (DFI_bp, NULL, NULL_RTX);
- timevar_pop (TV_DUMP);
- }
-
targetm.asm_out.file_end ();
/* Attach a special .ident directive to the end of the file to identify
fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
IDENT_ASM_OP, version_string);
#endif
-
- if (optimize > 0 && open_dump_file (DFI_combine, NULL))
- {
- timevar_push (TV_DUMP);
- dump_combine_total_stats (rtl_dump_file);
- close_dump_file (DFI_combine, NULL, NULL_RTX);
- timevar_pop (TV_DUMP);
- }
}
-/* This is called from various places for FUNCTION_DECL, VAR_DECL,
- and TYPE_DECL nodes.
-
- 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 automatic, it sets up the RTL and
- outputs any assembler code (label definition, storage allocation
- and initialization).
-
- DECL is the declaration. If ASMSPEC is nonzero, it specifies
- the assembler symbol name to be used. TOP_LEVEL is nonzero
- if this declaration is not within a function. */
-
+/* Display help for target options. */
void
-rest_of_decl_compilation (tree decl,
- const char *asmspec,
- int top_level,
- int at_end)
+display_target_options (void)
{
- /* We deferred calling assemble_alias so that we could collect
- other attributes such as visibility. Emit the alias now. */
- {
- tree alias;
- alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl));
- if (alias)
- {
- alias = TREE_VALUE (TREE_VALUE (alias));
- alias = get_identifier (TREE_STRING_POINTER (alias));
- assemble_alias (decl, alias);
- }
- }
+ int undoc, i;
+ static bool displayed = false;
+
+ /* Avoid double printing for --help --target-help. */
+ if (displayed)
+ return;
+
+ displayed = true;
- /* Forward declarations for nested functions are not "external",
- but we need to treat them as if they were. */
- if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
- || TREE_CODE (decl) == FUNCTION_DECL)
+ if (ARRAY_SIZE (target_switches) > 1
+#ifdef TARGET_OPTIONS
+ || ARRAY_SIZE (target_options) > 1
+#endif
+ )
{
- timevar_push (TV_VARCONST);
+ int doc = 0;
+
+ undoc = 0;
- if (asmspec)
- make_decl_rtl (decl, asmspec);
+ printf (_("\nTarget specific options:\n"));
- /* 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))
+ for (i = ARRAY_SIZE (target_switches); i--;)
{
- 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);
- }
+ const char *option = target_switches[i].name;
+ const char *description = target_switches[i].description;
-#ifdef ASM_FINISH_DECLARE_OBJECT
- if (decl == last_assemble_variable_decl)
- {
- ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
- top_level, at_end);
+ if (option == NULL || *option == 0)
+ continue;
+ else if (description == NULL)
+ {
+ undoc = 1;
+
+ if (extra_warnings)
+ printf (_(" -m%-23s [undocumented]\n"), option);
+ }
+ else if (*description != 0)
+ doc += printf (" -m%-23s %s\n", option, _(description));
}
-#endif
- timevar_pop (TV_VARCONST);
- }
- else if (DECL_REGISTER (decl) && asmspec != 0)
- {
- if (decode_reg_name (asmspec) >= 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;
- if (!top_level)
- expand_decl (decl);
- }
- }
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- dbxout_symbol (decl, 0);
- timevar_pop (TV_SYMOUT);
- }
-#endif
-#ifdef SDB_DEBUGGING_INFO
- else if (write_symbols == SDB_DEBUG && top_level
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- sdbout_symbol (decl, 0);
- timevar_pop (TV_SYMOUT);
- }
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- else if ((write_symbols == DWARF2_DEBUG
- || write_symbols == VMS_AND_DWARF2_DEBUG)
- && top_level
- && TREE_CODE (decl) == TYPE_DECL)
- {
- timevar_push (TV_SYMOUT);
- dwarf2out_decl (decl);
- timevar_pop (TV_SYMOUT);
- }
-#endif
-}
-
-/* Called after finishing a record, union or enumeral type. */
-
-void
-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
-#else
- tree type ATTRIBUTE_UNUSED,
- int toplev ATTRIBUTE_UNUSED
-#endif
- )
-{
- /* Avoid confusing the debug information machinery when there are
- errors. */
- if (errorcount != 0 || sorrycount != 0)
- return;
-
- timevar_push (TV_SYMOUT);
-#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- dbxout_symbol (TYPE_STUB_DECL (type), !toplev);
-#endif
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_symbol (TYPE_STUB_DECL (type), !toplev);
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- if ((write_symbols == DWARF2_DEBUG
- || write_symbols == VMS_AND_DWARF2_DEBUG)
- && toplev)
- dwarf2out_decl (TYPE_STUB_DECL (type));
-#endif
- timevar_pop (TV_SYMOUT);
-}
-
-/* Turn the RTL into assembly. */
-static void
-rest_of_handle_final (tree decl, rtx insns)
-{
- 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 ();
-}
-
-#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);
-
- dbr_schedule (insns, rtl_dump_file);
-
- close_dump_file (DFI_dbr, print_rtl, insns);
- timevar_pop (TV_DBR_SCHED);
-
- ggc_collect ();
-}
-#endif
-
-#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);
-
- 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 ();
-}
-#endif
-
-
-/* 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 ();
-}
-
-
-/* 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;
-
- 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)
- return true;
-
- reload_completed = 1;
- *rebuild_notes = 0;
-
- return false;
-}
-
-/* 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;
-
- /* 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_notes = 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);
- }
-
- return failure;
-}
-
-/* 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);
-
- 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);
-}
-
-/* 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);
-}
-
-#ifdef INSN_SCHEDULING
-/* Run instruction scheduler. */
-static void
-rest_of_handle_sched (tree decl, rtx insns)
-{
- timevar_push (TV_SCHED);
-
- /* 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);
- }
- timevar_pop (TV_SCHED);
-
- ggc_collect ();
-}
-
-/* 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);
-
- /* Do control and data sched analysis again,
- and write some more of the results to dump file. */
-
- split_all_insns (1);
-
- 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_sched2, print_rtl_with_bb, insns);
- timevar_pop (TV_SCHED2);
-
- ggc_collect ();
-}
-#endif
-
-/* 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);
-
- regmove_optimize (insns, max_reg_num (), rtl_dump_file);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- close_dump_file (DFI_regmove, print_rtl_with_bb, insns);
- timevar_pop (TV_REGMOVE);
-
- ggc_collect ();
-}
-
-/* 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-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)
- {
- 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 ());
-}
-
-/* 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);
-
- no_new_pseudos = 0;
- if_convert (1);
- no_new_pseudos = 1;
-
- close_dump_file (DFI_ce2, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT);
-}
-
-/* Do branch profiling and static profile estimation passes. */
-static void
-rest_of_handle_branch_prob (tree decl, rtx insns)
-{
- struct loops loops;
-
- timevar_push (TV_BRANCH_PROB);
- open_dump_file (DFI_bp, decl);
- if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- branch_prob ();
-
- /* 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);
-
- if (rtl_dump_file)
- flow_loops_dump (&loops, rtl_dump_file, NULL, 0);
-
- /* 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);
- if (optimize)
- purge_all_dead_edges (0);
- reg_scan (insns, max_reg_num (), 1);
-
- close_dump_file (DFI_addressof, print_rtl, insns);
-}
-
-/* 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 ();
-
- /* 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);
-
- /* 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.
-
- 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 ());
-}
-
-/* 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);
-
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- if (bypass_jumps (rtl_dump_file))
- {
- rebuild_jump_labels (insns);
- cleanup_cfg (CLEANUP_EXPENSIVE);
- delete_trivially_dead_insns (insns, max_reg_num ());
- }
-
- close_dump_file (DFI_bypass, print_rtl_with_bb, insns);
- timevar_pop (TV_BYPASS);
-
- ggc_collect ();
-
-#ifdef ENABLE_CHECKING
- 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;
- }
- }
-
- insns = get_insns ();
-
- /* Dump the rtl code if we are dumping rtl. */
-
- 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);
- }
-
- /* 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 (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;
-
- 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;
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
- }
-
- 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;
- }
-
- /* 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);
-}
-
-/* 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);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- convert_to_ssa ();
-
- close_dump_file (DFI_ssa, print_rtl_with_bb, insns);
- timevar_pop (TV_TO_SSA);
-
- /* Perform sparse conditional constant propagation, if requested. */
- if (flag_ssa_ccp)
- {
- timevar_push (TV_SSA_CCP);
- open_dump_file (DFI_ssa_ccp, decl);
-
- ssa_const_prop ();
-
- close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_SSA_CCP);
- }
-
- /* 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);
-
- close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
- timevar_pop (TV_FROM_SSA);
-
- ggc_collect ();
-
- return insns;
-}
-
-/* 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 (delete_null_pointer_checks (insns))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
-
- close_dump_file (DFI_null, print_rtl_with_bb, insns);
-}
-
-/* Try combining insns through substitution. */
-static void
-rest_of_handle_combine (tree decl, rtx insns)
-{
- int rebuild_jump_labels_after_combine = 0;
-
- timevar_push (TV_COMBINE);
- open_dump_file (DFI_combine, decl);
-
- 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_JUMP);
- rebuild_jump_labels (insns);
- timevar_pop (TV_JUMP);
-
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE);
- }
-
- 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 ();
-
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
- life_analysis (insns, rtl_dump_file, PROP_FINAL);
- if (optimize)
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_UPDATE_LIFE
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
- timevar_pop (TV_FLOW);
-
- if (warn_uninitialized)
- {
- uninitialized_vars_warning (DECL_INITIAL (decl));
- if (extra_warnings)
- setjmp_args_warning ();
- }
-
- if (optimize)
- {
- if (!flag_new_regalloc && initialize_uninitialized_subregs ())
- {
- /* Insns were inserted, and possibly pseudos created, so
- things might look a bit different. */
- insns = get_insns ();
- 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 ();
-}
-
-/* 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;
-
- 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)
- {
- timevar_push (TV_JUMP);
-
- if (delete_null_pointer_checks (insns))
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
- timevar_pop (TV_JUMP);
- }
-
- /* The second pass of jump optimization is likely to have
- removed a bunch more instructions. */
- renumber_insns (rtl_dump_file);
-
- timevar_pop (TV_CSE);
- close_dump_file (DFI_cse, print_rtl_with_bb, insns);
-}
-
-/* Run second CSE pass after loop optimizations. */
-static void
-rest_of_handle_cse2 (tree decl, rtx insns)
-{
- int tem;
-
- 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 ());
-
- 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);
-}
-
-/* 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_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;
- }
-
- /* 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 (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_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)
- {
- cleanup_barriers ();
-
- /* 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 ());
-
- /* 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 optimalizations. 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 optimalizations: */
- 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);
-
- 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. */
- split_all_insns (1);
-
-#ifdef OPTIMIZE_MODE_SWITCHING
- timevar_push (TV_MODE_SWITCH);
-
- no_new_pseudos = 0;
- optimize_mode_switching (NULL);
- no_new_pseudos = 1;
-
- timevar_pop (TV_MODE_SWITCH);
-#endif
-
- /* Any of the several passes since flow1 will have munged register
- lifetime data a bit. We need it to be up to date for scheduling
- (see handling of reg_known_equiv in init_alias_analysis). */
- recompute_reg_usage (insns, !optimize_size);
-
-#ifdef INSN_SCHEDULING
- rest_of_handle_sched (decl, insns);
-#endif
-
- /* Determine if the current function is a leaf before running reload
- since this can impact optimizations done by the prologue and
- epilogue thus changing register elimination offsets. */
- current_function_is_leaf = leaf_function_p ();
-
- timevar_push (TV_LOCAL_ALLOC);
- open_dump_file (DFI_lreg, decl);
-
- if (flag_new_regalloc)
- {
- if (rest_of_handle_new_regalloc (decl, insns,
- &rebuild_label_notes_after_reload))
- goto exit_rest_of_compilation;
- }
- else
- {
- if (rest_of_handle_old_regalloc (decl, insns,
- &rebuild_label_notes_after_reload))
- goto exit_rest_of_compilation;
- }
-
- ggc_collect ();
-
- open_dump_file (DFI_postreload, decl);
-
- /* Do a very simple CSE pass over just the hard registers. */
- if (optimize > 0)
- {
- timevar_push (TV_RELOAD_CSE_REGS);
- reload_cse_regs (insns);
- timevar_pop (TV_RELOAD_CSE_REGS);
- }
-
- /* 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. */
- if (rebuild_label_notes_after_reload)
- {
- timevar_push (TV_JUMP);
-
- rebuild_jump_labels (insns);
- purge_all_dead_edges (0);
-
- timevar_pop (TV_JUMP);
- }
-
- close_dump_file (DFI_postreload, print_rtl_with_bb, insns);
-
- /* Re-create the death notes which were deleted during reload. */
- timevar_push (TV_FLOW2);
- open_dump_file (DFI_flow2, decl);
-
-#ifdef ENABLE_CHECKING
- verify_flow_info ();
-#endif
-
- /* If optimizing, then go ahead and split insns now. */
-#ifndef STACK_REGS
- if (optimize > 0)
-#endif
- split_all_insns (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)
- {
- life_analysis (insns, rtl_dump_file, PROP_FINAL);
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE
- | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0));
-
- /* This is kind of a heuristic. We need to run combine_stack_adjustments
- even for machines with possibly nonzero RETURN_POPS_ARGS
- and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having
- push instructions will have popping returns. */
-#ifndef PUSH_ROUNDING
- if (!ACCUMULATE_OUTGOING_ARGS)
-#endif
- combine_stack_adjustments ();
-
- ggc_collect ();
- }
-
- flow2_completed = 1;
-
- close_dump_file (DFI_flow2, print_rtl_with_bb, insns);
- timevar_pop (TV_FLOW2);
-
-#ifdef HAVE_peephole2
- if (optimize > 0 && flag_peephole2)
- {
- timevar_push (TV_PEEPHOLE2);
- open_dump_file (DFI_peephole2, decl);
-
- peephole2_optimize (rtl_dump_file);
-
- close_dump_file (DFI_peephole2, print_rtl_with_bb, insns);
- timevar_pop (TV_PEEPHOLE2);
- }
-#endif
-
- if (optimize > 0)
- {
- if (flag_rename_registers || flag_cprop_registers)
- rest_of_handle_regrename (decl, insns);
-
- rest_of_handle_reorder_blocks (decl, insns);
- }
-
- if (flag_if_conversion2)
- {
- timevar_push (TV_IFCVT2);
- open_dump_file (DFI_ce3, decl);
-
- if_convert (1);
-
- close_dump_file (DFI_ce3, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT2);
- }
-
- 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");
-
- open_dump_file (DFI_branch_target_load, decl);
-
- branch_target_load_optimize (insns, true);
-
- close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns);
-
- ggc_collect ();
- }
-
-#ifdef INSN_SCHEDULING
- if (optimize > 0 && flag_schedule_insns_after_reload)
- rest_of_handle_sched2 (decl, insns);
-#endif
-
-#ifdef LEAF_REGISTERS
- current_function_uses_only_leaf_regs
- = optimize > 0 && only_leaf_regs_used () && leaf_function_p ();
-#endif
-
-#ifdef STACK_REGS
- rest_of_handle_stack_regs (decl, insns);
-#endif
-
- compute_alignments ();
-
- /* CFG is no longer maintained up-to-date. */
- free_bb_for_insn ();
-
- if (targetm.machine_dependent_reorg != 0)
- rest_of_handle_machine_reorg (decl, insns);
-
- purge_line_number_notes (insns);
- cleanup_barriers ();
-
-#ifdef DELAY_SLOTS
- if (optimize > 0 && flag_delayed_branch)
- rest_of_handle_delay_slots (decl, insns);
-#endif
-
-#if defined (HAVE_ATTR_length) && !defined (STACK_REGS)
- timevar_push (TV_SHORTEN_BRANCH);
- split_all_insns_noflow ();
- timevar_pop (TV_SHORTEN_BRANCH);
-#endif
-
- convert_to_eh_region_ranges ();
-
- /* Shorten branches. */
- timevar_push (TV_SHORTEN_BRANCH);
- shorten_branches (get_insns ());
- timevar_pop (TV_SHORTEN_BRANCH);
-
- 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;
-
- rest_of_handle_final (decl, insns);
-
- /* Write DBX symbols if requested. */
-
- /* Note that for those inline functions where we don't initially
- know for certain that we will be generating an out-of-line copy,
- the first invocation of this routine (rest_of_compilation) will
- skip over this code by doing a `goto exit_rest_of_compilation;'.
- Later on, wrapup_global_declarations will (indirectly) call
- rest_of_compilation again for those inline functions that need
- to have out-of-line copies generated. During that call, we
- *will* be routed past here. */
-
- timevar_push (TV_SYMOUT);
- (*debug_hooks->function_decl) (decl);
- timevar_pop (TV_SYMOUT);
-
- 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. */
-#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_types (NULL_TREE);
-#endif
-
- reload_completed = 0;
- epilogue_completed = 0;
- flow2_completed = 0;
- no_new_pseudos = 0;
-
- timevar_push (TV_FINAL);
-
- /* Clear out the insn_length contents now that they are no
- longer valid. */
- init_insn_lengths ();
-
- /* Show no temporary slots allocated. */
- init_temp_slots ();
-
- free_basic_block_vars (0);
- free_bb_for_insn ();
-
- 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
- (from final.c), and the function context push/pop code does not
- save/restore volatile_ok.
-
- ??? Maybe it isn't necessary for expand_start_function to call this
- anymore if we do it here? */
-
- init_recog_no_volatile ();
-
- /* 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);
-
- /* Clear integrate.c's pointer to the cfun structure we just
- destroyed. */
- DECL_SAVED_INSNS (decl) = 0;
- }
- cfun = 0;
-
- ggc_collect ();
-
- timevar_pop (TV_REST_OF_COMPILATION);
-}
-
-/* Display help for generic options. */
-void
-display_help (void)
-{
- int undoc;
- unsigned long i;
- const char *lang;
-
- printf (_(" -ffixed-<register> Mark <register> as being unavailable to the compiler\n"));
- printf (_(" -fcall-used-<register> Mark <register> as being corrupted by function calls\n"));
- printf (_(" -fcall-saved-<register> Mark <register> as being preserved across functions\n"));
- printf (_(" -finline-limit=<number> Limits the size of inlined functions to <number>\n"));
- 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--;)
- {
- const char *description = f_options[i].description;
-
- if (description != NULL && *description != 0)
- printf (" -f%-21s %s\n",
- f_options[i].string, _(description));
- }
-
- printf (_(" -O[number] Set optimization level to [number]\n"));
- printf (_(" -Os Optimize for space rather than speed\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"));
-
- for (i = ARRAY_SIZE (W_options); i--;)
- {
- const char *description = W_options[i].description;
-
- if (description != NULL && *description != 0)
- printf (" -W%-21s %s\n",
- 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"));
- printf (_(" -o <file> Place output into <file> \n"));
- printf (_("\
- -G <number> Put global and static data smaller than <number>\n\
- bytes into a special section (on some targets)\n"));
-
- for (i = ARRAY_SIZE (debug_args); i--;)
- {
- if (debug_args[i].description != NULL)
- printf (" -g%-21s %s\n",
- debug_args[i].arg, _(debug_args[i].description));
- }
-
- 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"));
- printf (_(" -dumpbase <file> Base name to be used for dumps from specific passes\n"));
-#if defined INSN_SCHEDULING
- printf (_(" -fsched-verbose=<number> Set the verbosity level of the scheduler\n"));
-#endif
- printf (_(" --help Display this information\n"));
-
- undoc = 0;
- lang = "language";
-
- /* Display descriptions of language specific options.
- If there is no description, note that there is an undocumented option.
- If the description is empty, do not display anything. (This allows
- options to be deliberately undocumented, for whatever reason).
- If the option string is missing, then this is a marker, indicating
- that the description string is in fact the name of a language, whose
- language specific options are to follow. */
-
- if (ARRAY_SIZE (documented_lang_options) > 1)
- {
- printf (_("\nLanguage specific options:\n"));
-
- for (i = 0; i < ARRAY_SIZE (documented_lang_options); i++)
- {
- const char *description = documented_lang_options[i].description;
- const char *option = documented_lang_options[i].option;
-
- if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" %-23.23s [undocumented]\n"), option);
- }
- else if (*description == 0)
- continue;
- else if (option == NULL)
- {
- if (undoc)
- printf
- (_("\nThere are undocumented %s specific options as well.\n"),
- lang);
- undoc = 0;
-
- printf (_("\n Options for %s:\n"), description);
-
- lang = description;
- }
- else
- printf (" %-23.23s %s\n", option, _(description));
- }
- }
-
- if (undoc)
- printf (_("\nThere are undocumented %s specific options as well.\n"),
- lang);
-
- 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
-#ifdef TARGET_OPTIONS
- || ARRAY_SIZE (target_options) > 1
-#endif
- )
- {
- int doc = 0;
-
- undoc = 0;
-
- printf (_("\nTarget specific options:\n"));
-
- for (i = ARRAY_SIZE (target_switches); i--;)
- {
- const char *option = target_switches[i].name;
- const char *description = target_switches[i].description;
-
- if (option == NULL || *option == 0)
- continue;
- else if (description == NULL)
- {
- undoc = 1;
-
- if (extra_warnings)
- printf (_(" -m%-23.23s [undocumented]\n"), option);
- }
- else if (*description != 0)
- doc += printf (" -m%-23.23s %s\n", option, _(description));
- }
-
-#ifdef TARGET_OPTIONS
- for (i = ARRAY_SIZE (target_options); i--;)
+#ifdef TARGET_OPTIONS
+ for (i = ARRAY_SIZE (target_options); i--;)
{
const char *option = target_options[i].prefix;
const char *description = target_options[i].description;
undoc = 1;
if (extra_warnings)
- printf (_(" -m%-23.23s [undocumented]\n"), option);
+ printf (_(" -m%-23s [undocumented]\n"), option);
}
else if (*description != 0)
- doc += printf (" -m%-23.23s %s\n", option, _(description));
+ doc += printf (" -m%-23s %s\n", option, _(description));
}
#endif
if (undoc)
void
decode_d_option (const char *arg)
{
- int i, c, matched;
+ int c;
while (*arg)
switch (c = *arg++)
{
- case 'a':
- for (i = 0; i < (int) DFI_MAX; ++i)
- dump_file[i].enabled = 1;
- break;
case 'A':
flag_debug_asm = 1;
break;
setup_core_dumping();
break;
+ case 'a':
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)
+ if (!enable_rtl_dump_file (c))
warning ("unrecognized gcc debugging option: %c", c);
break;
}
"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. */
-
-void
-decode_g_option (const char *arg)
-{
- 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
- selected type. It is an error to specify more than one
- debugging type. */
- static enum debug_info_type selected_debug_type = NO_DEBUG;
- /* Nonzero if debugging format has been explicitly set.
- -g and -ggdb don't explicitly set the debugging format so
- -gdwarf -g3 is equivalent to -gdwarf3. */
- static int type_explicitly_set_p = 0;
-
- /* The maximum admissible debug level value. */
- static const unsigned max_debug_level = 3;
-
- /* Look up ARG in the table. */
- for (da = debug_args; da->arg; da++)
- {
- const int da_len = strlen (da->arg);
-
- if (da_len == 0 || ! strncmp (arg, da->arg, da_len))
- {
- enum debug_info_type type = da->debug_type;
- const char *p = arg + da_len;
-
- if (*p && ! ISDIGIT (*p))
- continue;
-
- /* A debug flag without a level defaults to level 2.
- Note we do not want to call read_integral_parameter
- for that case since it will call atoi which
- will return zero.
-
- ??? We may want to generalize the interface to
- read_integral_parameter to better handle this case
- if this case shows up often. */
- if (*p)
- level = read_integral_parameter (p, 0, max_debug_level + 1);
- else
- level = (level == 0) ? 2 : level;
-
- if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len))
- {
- error ("use -gdwarf -g%d for DWARF v1, level %d",
- level, level);
- if (level == 2)
- error ("use -gdwarf-2 for DWARF v2");
- }
-
- if (level > max_debug_level)
- {
- warning ("\
-ignoring option `%s' due to invalid debug level specification",
- arg - 2);
- level = debug_info_level;
- }
-
- if (type == NO_DEBUG)
- {
- type = PREFERRED_DEBUGGING_TYPE;
-
- if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0)
- {
-#ifdef DWARF2_DEBUGGING_INFO
- type = DWARF2_DEBUG;
-#else
-#ifdef DBX_DEBUGGING_INFO
- type = DBX_DEBUG;
-#endif
-#endif
- }
- }
-
- if (type == NO_DEBUG)
- warning ("`%s': unknown or unsupported -g option", arg - 2);
-
- /* Does it conflict with an already selected type? */
- if (type_explicitly_set_p
- /* -g/-ggdb don't conflict with anything. */
- && da->debug_type != NO_DEBUG
- && type != selected_debug_type)
- warning ("`%s' ignored, conflicts with `-g%s'",
- arg - 2, debug_type_names[(int) selected_debug_type]);
- else
- {
- /* If the format has already been set, -g/-ggdb
- only change the debug level. */
- if (type_explicitly_set_p && da->debug_type == NO_DEBUG)
- /* Don't change debugging type. */
- ;
- else
- {
- selected_debug_type = type;
- type_explicitly_set_p = da->debug_type != NO_DEBUG;
- }
-
- write_symbols = (level == 0
- ? NO_DEBUG
- : selected_debug_type);
- use_gnu_debug_info_extensions = da->use_extensions_p;
- debug_info_level = (enum debug_info_level) level;
- }
-
- break;
- }
- }
-
- if (! da->arg)
- warning ("`-g%s': unknown or unsupported -g option", arg);
-}
-
/* Decode -m switches. */
/* Decode the switch -mNAME. */
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 ();
+ that it can be printed below. This helps reproducibility. */
+ randomize ();
/* Print the options as passed. */
-
pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term,
_("options passed: "), "");
if (asm_file_name == 0)
{
int len = strlen (dump_base_name);
- char *dumpname = (char *) xmalloc (len + 6);
+ char *dumpname = xmalloc (len + 6);
memcpy (dumpname, dump_base_name, len + 1);
strip_off_ending (dumpname, len);
strcat (dumpname, ".s");
}
#ifdef IO_BUFFER_SIZE
- setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
+ setvbuf (asm_out_file, xmalloc (IO_BUFFER_SIZE),
_IOFBF, IO_BUFFER_SIZE);
#endif
}
}
+/* Default version of get_pch_validity.
+ By default, every flag difference is fatal; that will be mostly right for
+ most targets, but completely right for very few. */
+
+void *
+default_get_pch_validity (size_t *len)
+{
+#ifdef TARGET_OPTIONS
+ size_t i;
+#endif
+ char *result, *r;
+
+ *len = sizeof (target_flags) + 2;
+#ifdef TARGET_OPTIONS
+ for (i = 0; i < ARRAY_SIZE (target_options); i++)
+ {
+ *len += 1;
+ if (*target_options[i].variable)
+ *len += strlen (*target_options[i].variable);
+ }
+#endif
+
+ result = r = xmalloc (*len);
+ r[0] = flag_pic;
+ r[1] = flag_pie;
+ r += 2;
+ memcpy (r, &target_flags, sizeof (target_flags));
+ r += sizeof (target_flags);
+
+#ifdef TARGET_OPTIONS
+ for (i = 0; i < ARRAY_SIZE (target_options); i++)
+ {
+ const char *str = *target_options[i].variable;
+ size_t l;
+ if (! str)
+ str = "";
+ l = strlen (str) + 1;
+ memcpy (r, str, l);
+ r += l;
+ }
+#endif
+
+ return result;
+}
+
+/* Default version of pch_valid_p. */
+
+const char *
+default_pch_valid_p (const void *data_p, size_t len)
+{
+ const char *data = (const char *)data_p;
+ const char *flag_that_differs = NULL;
+ size_t i;
+
+ /* -fpic and -fpie also usually make a PCH invalid. */
+ if (data[0] != flag_pic)
+ return _("created and used with different settings of -fpic");
+ if (data[1] != flag_pie)
+ return _("created and used with different settings of -fpie");
+ data += 2;
+
+ /* Check target_flags. */
+ if (memcmp (data, &target_flags, sizeof (target_flags)) != 0)
+ {
+ for (i = 0; i < ARRAY_SIZE (target_switches); i++)
+ {
+ int bits;
+ int tf;
+
+ memcpy (&tf, data, sizeof (target_flags));
+
+ bits = target_switches[i].value;
+ if (bits < 0)
+ bits = -bits;
+ if ((target_flags & bits) != (tf & bits))
+ {
+ flag_that_differs = target_switches[i].name;
+ goto make_message;
+ }
+ }
+ abort ();
+ }
+ data += sizeof (target_flags);
+ len -= sizeof (target_flags);
+
+ /* Check string options. */
+#ifdef TARGET_OPTIONS
+ for (i = 0; i < ARRAY_SIZE (target_options); i++)
+ {
+ const char *str = *target_options[i].variable;
+ size_t l;
+ if (! str)
+ str = "";
+ l = strlen (str) + 1;
+ if (len < l || memcmp (data, str, l) != 0)
+ {
+ flag_that_differs = target_options[i].prefix;
+ goto make_message;
+ }
+ data += l;
+ len -= l;
+ }
+#endif
+
+ return NULL;
+
+ make_message:
+ {
+ char *r;
+ asprintf (&r, _("created and used with differing settings of `-m%s'"),
+ flag_that_differs);
+ if (r == NULL)
+ return _("out of memory");
+ return r;
+ }
+}
+
+/* Default tree printer. Handles declarations only. */
+static bool
+default_tree_printer (pretty_printer * pp, text_info *text)
+{
+ switch (*text->format_spec)
+ {
+ case 'D':
+ case 'F':
+ case 'T':
+ {
+ tree t = va_arg (*text->args_ptr, tree);
+ const char *n = DECL_NAME (t)
+ ? lang_hooks.decl_printable_name (t, 2)
+ : "<anonymous>";
+ pp_string (pp, n);
+ }
+ return true;
+
+ default:
+ return false;
+ }
+}
+
/* 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 (char *argv0)
+general_init (const char *argv0)
{
- char *p;
+ const char *p;
p = argv0 + strlen (argv0);
while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
gcc_init_libintl ();
+ /* Initialize the diagnostics reporting machinery, so option parsing
+ can give warnings and errors. */
+ diagnostic_initialize (global_dc);
+ /* Set a default printer. Language specific initializations will
+ override it later. */
+ pp_format_decoder (global_dc->printer) = &default_tree_printer;
+
/* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */
#ifdef SIGSEGV
signal (SIGSEGV, crash_signal);
/* Other host-specific signal setup. */
(*host_hooks.extra_signals)();
- /* Initialize the diagnostics reporting machinery, so option parsing
- can give warnings and errors. */
- diagnostic_initialize (global_dc);
-
/* Initialize the garbage-collector, string pools and tree type hash
table. */
init_ggc ();
init_stringpool ();
+ linemap_init (&line_table);
init_ttree ();
/* Initialize register usage now so switches may override. */
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);
+ no_backend = lang_hooks.post_options (&main_input_filename);
input_filename = main_input_filename;
#ifdef OVERRIDE_OPTIONS
if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function)
flag_unit_at_a_time = 0;
+ if (flag_value_profile_transformations)
+ flag_profile_values = 1;
+
/* Warn about options that are not supported on this machine. */
#ifndef INSN_SCHEDULING
if (flag_schedule_insns || flag_schedule_insns_after_reload)
profile_flag = 0;
}
+ /* A lot of code assumes write_symbols == NO_DEBUG if the debugging
+ level is 0. */
+ if (debug_info_level == DINFO_LEVEL_NONE)
+ write_symbols = NO_DEBUG;
+
/* Now we know write_symbols, set up the debug hooks based on it.
By default we do nothing for debug output. */
+ if (write_symbols == NO_DEBUG)
+ debug_hooks = &do_nothing_debug_hooks;
#if defined(DBX_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG)
+ else if (write_symbols == DBX_DEBUG)
debug_hooks = &dbx_debug_hooks;
#endif
#if defined(XCOFF_DEBUGGING_INFO)
- if (write_symbols == XCOFF_DEBUG)
+ else if (write_symbols == XCOFF_DEBUG)
debug_hooks = &xcoff_debug_hooks;
#endif
#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
+ else 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)
+ else if (write_symbols == DWARF2_DEBUG)
debug_hooks = &dwarf2_debug_hooks;
#endif
#ifdef VMS_DEBUGGING_INFO
- if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
+ else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
debug_hooks = &vmsdbg_debug_hooks;
#endif
+ else
+ error ("target system does not support the \"%s\" debug format",
+ debug_type_names[write_symbols]);
+
+ /* Now we know which debug output will be used so we can set
+ flag_var_tracking if user has not specified it. */
+ if (flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING)
+ {
+ /* User has not specified -f(no-)var-tracking so autodetect it. */
+ flag_var_tracking
+ = (optimize >= 1 && debug_info_level >= DINFO_LEVEL_NORMAL
+ && debug_hooks->var_location != do_nothing_debug_hooks.var_location);
+ }
/* If auxiliary info generation is desired, open the output file.
This goes in the same directory as the source file--unlike
static void
backend_init (void)
{
- /* init_emit_once uses reg_raw_mode and therefore must be called
- after init_regs which initialized reg_raw_mode. */
- init_regs ();
+ init_adjust_machine_modes ();
+
init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
|| debug_info_level == DINFO_LEVEL_VERBOSE
#ifdef VMS_DEBUGGING_INFO
#endif
|| flag_test_coverage
|| warn_notreached);
+
+ init_regs ();
init_fake_stack_mems ();
init_alias_once ();
init_loop ();
dump_base_name = name ? name : "gccdump";
/* Other front-end initialization. */
- if ((*lang_hooks.init) () == 0)
+ if (lang_hooks.init () == 0)
return 0;
init_asm_output (name);
front end is initialized. */
init_eh ();
init_optabs ();
+ init_optimization_passes ();
/* The following initialization functions need to generate rtl, so
provide a dummy function context for them. */
fatal_error ("error closing %s: %m", asm_file_name);
}
- /* Do whatever is necessary to finish printing the graphs. */
- if (graph_dump_format != no_graph)
- {
- int i;
-
- for (i = 0; i < (int) DFI_MAX; ++i)
- if (dump_file[i].initialized && dump_file[i].graph_dump_p)
- {
- char seq[16];
- char *suffix;
-
- sprintf (seq, DUMPFILE_FORMAT, i);
- suffix = concat (seq, dump_file[i].extension, NULL);
- finish_graph_dump_file (dump_base_name, suffix);
- free (suffix);
- }
- }
+ finish_optimization_passes ();
if (mem_report)
{
ggc_print_statistics ();
stringpool_statistics ();
dump_tree_statistics ();
+ dump_rtx_statistics ();
+ dump_varray_statistics ();
+ dump_alloc_pool_statistics ();
+ dump_ggc_loc_statistics ();
}
/* Free up memory for the benefit of leak detectors. */
free_reg_info ();
/* Language-specific end of compilation actions. */
- (*lang_hooks.finish) ();
+ lang_hooks.finish ();
}
/* Initialize the compiler, and compile the input file. */
}
/* 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.
It is not safe to call this function more than once. */
int
-toplev_main (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]);
enough to default flags appropriately. */
decode_options (argc, argv);
+ randomize ();
+
/* Exit early if we can (e.g. -help). */
if (!exit_after_options)
do_compile ();
OSDN Git Service
