/* 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 "version.h"
#include "rtl.h"
#include "tm_p.h"
#include "flags.h"
#include "intl.h"
#include "ggc.h"
#include "graph.h"
-#include "loop.h"
#include "regs.h"
#include "timevar.h"
#include "diagnostic.h"
-#include "ssa.h"
#include "params.h"
#include "reload.h"
#include "dwarf2asm.h"
#include "opts.h"
#include "coverage.h"
#include "value-prof.h"
+#include "alloc-pool.h"
+#include "tree-mudflap.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 (const char *);
static void do_compile (void);
static void process_options (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_addressof (tree, rtx);
-static void rest_of_handle_cfg (tree, rtx);
-static void rest_of_handle_branch_prob (tree, rtx);
-static void rest_of_handle_value_profile_transformations (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 *main_input_filename;
+#ifndef USE_MAPPED_LOCATION
+location_t unknown_location = { NULL, 0 };
+#endif
+
+/* Used to enable -fvar-tracking, -fweb and -frename-registers according
+ to optimize and default_debug_hooks in process_options (). */
+#define AUTODETECT_FLAG_VAR_TRACKING 2
+
/* Current position in real source file. */
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. */
const struct gcc_debug_hooks *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;
+/* Debug hooks - target default. */
- /* 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_cgraph,
- 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_vpt,
- DFI_ce1,
- DFI_tracer,
- DFI_web,
- 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 Y "
-*/
-
-static struct dump_file_info dump_file[DFI_MAX] =
-{
- { "cgraph", 'U', 0, 0, 0 },
- { "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 },
- { "vpt", 'V', 1, 0, 0 },
- { "ce1", 'C', 1, 0, 0 },
- { "tracer", 'T', 1, 0, 0 },
- { "web", 'Z', 0, 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);
+static const struct gcc_debug_hooks *default_debug_hooks;
/* Other flags saying which kinds of debugging dump have been requested. */
or 0 if between functions. */
tree current_function_decl;
-/* Set to the FUNC_BEGIN label of the current function, or NULL_TREE
+/* Set to the FUNC_BEGIN label of the current function, or NULL
if none. */
-tree current_function_func_begin_label;
-
-/* Nonzero if doing dwarf2 duplicate elimination. */
-
-int flag_eliminate_dwarf2_dups = 0;
-
-/* Nonzero if doing unused type elimination. */
-
-int flag_eliminate_unused_debug_types = 1;
-
-/* Nonzero means emit debugging information only for symbols which are used. */
-int flag_debug_only_used_symbols = 0;
-
-/* Nonzero if generating code to do profiling. */
-
-int profile_flag = 0;
-
-/* Nonzero if generating code to profile program flow graph arcs. */
-
-int profile_arc_flag = 0;
-
-/* Nonzero if value histograms should be measured. */
-
-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;
-
-/* Nonzero indicates that branch taken probabilities should be calculated. */
-
-int flag_branch_probabilities = 0;
-
-/* Nonzero if basic blocks should be reordered. */
-
-int flag_reorder_blocks = 0;
-
-/* Nonzero if functions should be reordered. */
-
-int flag_reorder_functions = 0;
-
-/* Nonzero if registers should be renamed. */
-
-int flag_rename_registers = 0;
-int flag_cprop_registers = 0;
-
-/* Nonzero for -pedantic switch: warn about anything
- that standard spec forbids. */
-
-int pedantic = 0;
+const char * current_function_func_begin_label;
/* Temporarily suppress certain warnings.
This is set while reading code from a system header file. */
int in_system_header = 0;
-/* Don't print functions as they are compiled. -quiet. */
-
-int quiet_flag = 0;
-
-/* Print times taken by the various passes. -ftime-report. */
-
-int time_report = 0;
-
-/* Print memory still in use at end of compilation (which may have little
- to do with peak memory consumption). -fmem-report. */
-
-int mem_report = 0;
-
/* Nonzero means to collect statistics which might be expensive
and to print them when we are done. */
int flag_detailed_statistics = 0;
int flag_signed_char;
-/* Nonzero means give an enum type only as many bytes as it needs. */
+/* Nonzero means give an enum type only as many bytes as it needs. A value
+ of 2 means it has not yet been initialized. */
int flag_short_enums;
-/* Nonzero for -fcaller-saves: allocate values in regs that need to
- 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.
This should only be defined if compatibility with another compiler or
int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
-/* Nonzero for -fforce-mem: load memory value into a register
- before arithmetic on it. This makes better cse but slower compilation. */
-
-int flag_force_mem = 0;
-
-/* Nonzero for -fforce-addr: load memory address into a register before
- reference to memory. This makes better cse but slower compilation. */
-
-int flag_force_addr = 0;
-
-/* Nonzero for -fdefer-pop: don't pop args after each function call;
- instead save them up to pop many calls' args with one insns. */
-
-int flag_defer_pop = 0;
-
-/* Nonzero for -ffloat-store: don't allocate floats and doubles
- in extended-precision registers. */
-
-int flag_float_store = 0;
-
-/* Nonzero for -fcse-follow-jumps:
- have cse follow jumps to do a more extensive job. */
-
-int flag_cse_follow_jumps;
-
-/* Nonzero for -fcse-skip-blocks:
- have cse follow a branch around a block. */
-int flag_cse_skip_blocks;
-
-/* Nonzero for -fexpensive-optimizations:
- perform miscellaneous relatively-expensive optimizations. */
-int flag_expensive_optimizations;
-
-/* Nonzero for -fthread-jumps:
- have jump optimize output of loop. */
-
-int flag_thread_jumps;
-
-/* Nonzero enables strength-reduction in loop.c. */
-
-int flag_strength_reduce = 0;
-
-/* Nonzero enables loop unrolling in unroll.c. Only loops for which the
- number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
- UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
- unrolled. */
-
-int flag_old_unroll_loops;
-
-/* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
- This is generally not a win. */
-
-int flag_old_unroll_all_loops;
-
-/* Enables unrolling of simple loops in loop-unroll.c. */
-int flag_unroll_loops;
-
-/* Enables unrolling of all loops in loop-unroll.c. */
-int flag_unroll_all_loops;
-
-/* Nonzero enables loop peeling. */
-int flag_peel_loops;
-
-/* Nonzero enables loop unswitching. */
-int flag_unswitch_loops;
-
-/* Nonzero enables prefetch optimizations for arrays in loops. */
-
-int flag_prefetch_loop_arrays;
-
-/* Nonzero forces all invariant computations in loops to be moved
- outside the loop. */
-
-int flag_move_all_movables = 0;
-
-/* Nonzero forces all general induction variables in loops to be
- strength reduced. */
-
-int flag_reduce_all_givs = 0;
-
-/* Nonzero to perform full register move optimization passes. This is the
- default for -O2. */
-
-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_no_function_cse = 0;
-
-/* Nonzero for -fomit-frame-pointer:
- don't make a frame pointer in simple functions that don't require one. */
-
-int flag_omit_frame_pointer = 0;
-
-/* Nonzero means place each function into its own section on those platforms
- which support arbitrary section names and unlimited numbers of sections. */
-
-int flag_function_sections = 0;
-
-/* ... and similar for data. */
-
-int flag_data_sections = 0;
-
-/* Nonzero to inhibit use of define_optimization peephole opts. */
-
-int flag_no_peephole = 0;
-
-/* Nonzero allows GCC to optimize sibling and tail recursive calls. */
-
-int flag_optimize_sibling_calls = 0;
-
-/* Nonzero means the front end generally wants `errno' maintained by math
- operations, like built-in SQRT. */
-
-int flag_errno_math = 1;
-
-/* Nonzero means that unsafe floating-point math optimizations are allowed
- for the sake of speed. IEEE compliance is not guaranteed, and operations
- are allowed to assume that their arguments and results are "normal"
- (e.g., nonnegative for SQRT). */
-
-int flag_unsafe_math_optimizations = 0;
-
-/* Nonzero means that no NaNs or +-Infs are expected. */
-
-int flag_finite_math_only = 0;
-
-/* Zero means that floating-point math operations cannot generate a
- (user-visible) trap. This is the case, for example, in nonstop
- IEEE 754 arithmetic. Trapping conditions include division by zero,
- overflow, underflow, invalid and inexact, but does not include
- operations on signaling NaNs (see below). */
-
-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_signaling_nans = 0;
-
/* 0 means straightforward implementation of complex divide acceptable.
1 means wide ranges of inputs must work for complex divide.
2 means C99-like requirements for complex divide (not yet implemented). */
int flag_complex_divide_method = 0;
-/* Nonzero means just do syntax checking; don't output anything. */
-
-int flag_syntax_only = 0;
-
-/* Nonzero means performs web construction pass. */
-
-int flag_web;
-
-/* Nonzero means perform loop optimizer. */
-
-int flag_loop_optimize;
-
-/* Nonzero means perform crossjumping. */
-
-int flag_crossjumping;
-
-/* Nonzero means perform if conversion. */
-
-int flag_if_conversion;
-
-/* Nonzero means perform if conversion after reload. */
-
-int flag_if_conversion2;
-
-/* Nonzero means to use global dataflow analysis to eliminate
- useless null pointer tests. */
-
-int flag_delete_null_pointer_checks;
-
-/* Nonzero means perform global CSE. */
-
-int flag_gcse = 0;
-
-/* Nonzero means to do the enhanced load motion during gcse, which trys
- to hoist loads by not killing them when a store to the same location
- is seen. */
-
-int flag_gcse_lm = 1;
-
-/* Nonzero means to perform store motion after gcse, which will try to
- move stores closer to the exit block. Its not very effective without
- flag_gcse_lm. */
-
-int flag_gcse_sm = 1;
-
-/* Nonzero if we want to perfrom redundant load after store elimination
- in gcse. */
-
-int flag_gcse_las = 1;
-
-/* Perform target register optimization before prologue / epilogue
- threading. */
-
-int flag_branch_target_load_optimize = 0;
-
-/* Perform target register optimization after prologue / epilogue
- threading and jump2. */
-
-int flag_branch_target_load_optimize2 = 0;
-
-/* Nonzero means to rerun cse after loop optimization. This increases
- compilation time about 20% and picks up a few more common expressions. */
-
-int flag_rerun_cse_after_loop;
-
-/* Nonzero means to run loop optimizations twice. */
-
-int flag_rerun_loop_opt;
-
-/* Nonzero for -finline-functions: ok to inline functions that look like
- good inline candidates. */
-
-int flag_inline_functions;
-
-/* Nonzero for -fkeep-inline-functions: even if we make a function
- go inline everywhere, keep its definition around for debugging
- purposes. */
-
-int flag_keep_inline_functions;
-
-/* Nonzero means that functions will not be inlined. */
-
-int flag_no_inline = 2;
-
/* Nonzero means that we don't want inlining by virtue of -fno-inline,
not just because the tree inliner turned us off. */
int flag_really_no_inline = 2;
-/* Nonzero means that we should emit static const variables
- regardless of whether or not optimization is turned on. */
-
-int flag_keep_static_consts = 1;
-
/* Nonzero means we should be saving declaration info into a .X file. */
int flag_gen_aux_info = 0;
const char *aux_info_file_name;
-/* Nonzero means make the text shared if supported. */
-
-int flag_shared_data;
-
-/* Nonzero means schedule into delayed branch slots if supported. */
-
-int flag_delayed_branch;
-
-/* Nonzero if we are compiling pure (sharable) code.
- Value is 1 if we are doing "small" pic; value is 2 if we're doing
- "large" pic. */
-
-int flag_pic;
-
-/* Nonzero if we are compiling position independent code for executable.
- The value is 1 if we are doing "small" pic; value is 2 if we're doing
- "large" pic. */
-
-int flag_pie;
-
/* Nonzero if we are compiling code for a shared library, zero for
executable. */
enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
-/* Nonzero means generate extra code for exception handling and enable
- exception handling. */
-
-int flag_exceptions;
-
-/* Nonzero means generate frame unwind info table when supported. */
-
-int flag_unwind_tables = 0;
-
-/* Nonzero means generate frame unwind info table exact at each insn
- boundary. */
-
-int flag_asynchronous_unwind_tables = 0;
-
-/* Nonzero means don't place uninitialized global data in common storage
- by default. */
-
-int flag_no_common;
-
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */
int flag_pedantic_errors = 0;
-/* flag_schedule_insns means schedule insns within basic blocks (before
- local_alloc).
- flag_schedule_insns_after_reload means schedule insns after
- global_alloc. */
-
-int flag_schedule_insns = 0;
-int flag_schedule_insns_after_reload = 0;
-
-/* When flag_schedule_insns_after_reload is set, use EBB scheduler. */
-int flag_sched2_use_superblocks = 0;
-
-/* When flag_schedule_insns_after_reload is set, construct traces and EBB
- scheduler. */
-int flag_sched2_use_traces = 0;
-
-/* The following flags have effect only for scheduling before register
- allocation:
-
- flag_schedule_interblock means schedule insns across basic blocks.
- flag_schedule_speculative means allow speculative motion of non-load insns.
- flag_schedule_speculative_load means allow speculative motion of some
- load insns.
- flag_schedule_speculative_load_dangerous allows speculative motion of more
- load insns. */
-
-int flag_schedule_interblock = 1;
-int flag_schedule_speculative = 1;
-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
- by a cheaper branch on a count register. */
-int flag_branch_on_count_reg = 1;
-
-/* -finhibit-size-directive inhibits output of .size for ELF.
- This is used only for compiling crtstuff.c,
- and it may be extended to other effects
- needed for crtstuff.c on other systems. */
-int flag_inhibit_size_directive = 0;
-
-/* -fverbose-asm causes extra commentary information to be produced in
- the generated assembly code (to make it more readable). This option
- is generally only of use to those who actually need to read the
- generated assembly code (perhaps while debugging the compiler itself).
- -fno-verbose-asm, the default, causes the extra information
- to be omitted and is useful when comparing two assembler files. */
-
-int flag_verbose_asm = 0;
-
/* -dA causes debug commentary information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read the
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;
-
-/* Emit code to check for stack overflow; also may cause large objects
- to be allocated dynamically. */
-int flag_stack_check;
-
/* When non-NULL, indicates that whenever space is allocated on the
stack, the resulting stack pointer must not pass this
address---that is, for stacks that grow downward, the stack pointer
the support provided depends on the backend. */
rtx stack_limit_rtx;
-/* 0 if pointer arguments may alias each other. True in C.
- 1 if pointer arguments may not alias each other but may alias
- global variables.
- 2 if pointer arguments may not alias each other and may not
- alias global variables. True in Fortran.
- This defaults to 0 for C. */
-int flag_argument_noalias = 0;
-
-/* Nonzero if we should do (language-dependent) alias analysis.
- Typically, this analysis will assume that expressions of certain
- types do not alias expressions of certain other types. Only used
- if alias analysis (in general) is enabled. */
-int flag_strict_aliasing = 0;
-
-/* Instrument functions with calls at entry and exit, for profiling. */
-int flag_instrument_function_entry_exit = 0;
-
-/* Nonzero means ignore `#ident' directives. 0 means handle them.
- On SVR4 targets, it also controls whether or not to emit a
- string identifying the compiler. */
-
-int flag_no_ident = 0;
-
-/* This will perform a peephole pass before sched2. */
-int flag_peephole2 = 0;
-
-/* This will try to guess branch probabilities. */
-int flag_guess_branch_prob = 0;
-
-/* -fcheck-bounds causes gcc to generate array bounds checks.
- For C, C++, ObjC: defaults to off.
- For Java: defaults to on.
- For Fortran: defaults to off. */
-int flag_bounds_check = 0;
-
-/* This will attempt to merge constant section constants, if 1 only
- string constants and constants from constant pool, if 2 also constant
- variables. */
-int flag_merge_constants = 1;
-
/* If one, renumber instruction UIDs to reduce the number of
unused UIDs if there are a lot of instructions. If greater than
one, unconditionally renumber instruction UIDs. */
int flag_renumber_insns = 1;
-/* If nonzero, use the graph coloring register allocator. */
-int flag_new_regalloc = 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 (). */
+int flag_var_tracking = AUTODETECT_FLAG_VAR_TRACKING;
-/* Nonzero if we perform superblock formation. */
+/* True if the user has tagged the function with the 'section'
+ attribute. */
-int flag_tracer = 0;
-
-/* Nonzero if we perform whole unit at a time compilation. */
-
-int flag_unit_at_a_time = 0;
+bool user_defined_section_attribute = false;
/* 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
of two not less than the variable, for .align output. */
-int align_loops;
int align_loops_log;
int align_loops_max_skip;
-int align_jumps;
int align_jumps_log;
int align_jumps_max_skip;
-int align_labels;
int align_labels_log;
int align_labels_max_skip;
-int align_functions;
int align_functions_log;
/* Like align_functions_log above, but used by front-ends to force the
}
lang_independent_options;
-/* Nonzero if signed arithmetic overflow should trap. */
-int flag_trapv = 0;
-
-/* Nonzero if signed arithmetic overflow should wrap around. */
-int flag_wrapv = 0;
-
/* 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 user symbol prefix after having resolved same. */
const char *user_label_prefix;
{ NULL, 0, NULL }
};
-/* Table of language-independent -f options.
- STRING is the option name. VARIABLE is the address of the variable.
- ON_VALUE is the value to store in VARIABLE
- if `-fSTRING' is seen as an option.
- (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
-
-static const lang_independent_options f_options[] =
-{
- {"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 },
- {"writable-strings", &flag_writable_strings, 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 },
- {"branch-target-load-optimize", &flag_branch_target_load_optimize, 1 },
- {"branch-target-load-optimize2", &flag_branch_target_load_optimize2, 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-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 },
- {"gnu-linker", &flag_gnu_linker, 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 },
- {"ssa", &flag_ssa, 1 },
- {"ssa-ccp", &flag_ssa_ccp, 1 },
- {"ssa-dce", &flag_ssa_dce, 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 }
-};
-
/* Here is a table, controlled by the tm.h file, listing each -m switch
and which bits in `target_switches' it should set or clear.
If VALUE is positive, it is bits to set.
FILE *asm_out_file;
FILE *aux_info_file;
-FILE *rtl_dump_file = NULL;
-FILE *cgraph_dump_file = NULL;
+FILE *dump_file = NULL;
+char *dump_file_name;
/* The current working directory of a translation. It's generally the
directory from which compilation was initiated, but a preprocessed
set_src_pwd (const char *pwd)
{
if (src_pwd)
- return false;
+ {
+ if (strcmp (src_pwd, pwd) == 0)
+ return true;
+ else
+ return false;
+ }
src_pwd = xstrdup (pwd);
return true;
if (rtl_dump_and_exit)
verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
else
- verbatim (" %s", (*lang_hooks.decl_printable_name) (decl, 2));
+ verbatim (" %s", lang_hooks.decl_printable_name (decl, 2));
fflush (stderr);
pp_needs_newline (global_dc->printer) = true;
diagnostic_set_last_function (global_dc);
{
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;
}
}
#endif
value = local_tick ^ getpid ();
-
+
sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
flag_random_seed = random_seed;
}
if (*endp != 0)
{
if (pname != 0)
- error ("invalid option argument `%s'", pname);
+ error ("invalid option argument %qs", pname);
return defval;
}
return atoi (p);
}
-/* Return the logarithm of X, base 2, considering X unsigned,
- if X is a power of 2. Otherwise, returns -1.
+/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
+ If X is 0, return -1.
- This should be used via the `exact_log2' macro. */
+ This should be used via the floor_log2 macro. */
int
-exact_log2_wide (unsigned HOST_WIDE_INT x)
+floor_log2_wide (unsigned HOST_WIDE_INT x)
{
- int log = 0;
- /* Test for 0 or a power of 2. */
- if (x == 0 || x != (x & -x))
+ int t=0;
+ if (x == 0)
return -1;
- while ((x >>= 1) != 0)
- log++;
- return log;
+ if (sizeof (HOST_WIDE_INT) * 8 > 64)
+ if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64))
+ t += 64;
+ if (sizeof (HOST_WIDE_INT) * 8 > 32)
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32))
+ t += 32;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16))
+ t += 16;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8))
+ t += 8;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4))
+ t += 4;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2))
+ t += 2;
+ if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1))
+ t += 1;
+ return t;
}
-/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
- If X is 0, return -1.
+/* Return the logarithm of X, base 2, considering X unsigned,
+ if X is a power of 2. Otherwise, returns -1.
- This should be used via the floor_log2 macro. */
+ This should be used via the `exact_log2' macro. */
int
-floor_log2_wide (unsigned HOST_WIDE_INT x)
+exact_log2_wide (unsigned HOST_WIDE_INT x)
{
- int log = -1;
- while (x != 0)
- log++,
- x >>= 1;
- return log;
+ /* Test for 0 or a power of 2. */
+ if (x == 0 || x != (x & -x))
+ return -1;
+ return floor_log2_wide (x);
}
/* Handler for fatal signals, such as SIGSEGV. These are transformed
crash_signal (int signo)
{
signal (signo, SIG_DFL);
+
+ /* If we crashed while processing an ASM statement, then be a little more
+ graceful. It's most likely the user's fault. */
+ if (this_is_asm_operands)
+ {
+ output_operand_lossage ("unrecoverable error");
+ exit (FATAL_EXIT_CODE);
+ }
+
internal_error ("%s", strsignal (signo));
}
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;
- /* NA gets INPUT_NAME sans directory names. */
+ 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)
{
if (IS_DIR_SEPARATOR (na[-1]))
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 (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
{
+ struct cgraph_varpool_node *node;
bool needed = 1;
+ node = cgraph_varpool_node (decl);
- if (flag_unit_at_a_time
- && cgraph_varpool_node (decl)->finalized)
+ if (flag_unit_at_a_time && node->finalized)
needed = 0;
else if ((flag_unit_at_a_time && !cgraph_global_info_ready)
&& (TREE_USED (decl)
|| TREE_USED (DECL_ASSEMBLER_NAME (decl))))
/* needed */;
- else if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
+ else if (node->needed)
/* needed */;
else if (DECL_COMDAT (decl))
needed = 0;
if (needed)
{
reconsider = 1;
- rest_of_decl_compilation (decl, NULL, 1, 1);
+ rest_of_decl_compilation (decl, 1, 1);
}
}
-
- if (TREE_CODE (decl) == FUNCTION_DECL
- && DECL_INITIAL (decl) != 0
- && DECL_SAVED_INSNS (decl) != 0
- && DECL_SAVED_INSNS (decl)->saved_for_inline
- && (flag_keep_inline_functions
- || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
- {
- reconsider = 1;
- output_inline_function (decl);
- }
}
if (reconsider)
because many programs have static variables
that exist only to get some text into the object file. */
if (TREE_CODE (decl) == FUNCTION_DECL
- && (warn_unused_function
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
&& DECL_INITIAL (decl) == 0
&& DECL_EXTERNAL (decl)
&& ! DECL_ARTIFICIAL (decl)
- && ! TREE_PUBLIC (decl))
+ && ! TREE_NO_WARNING (decl)
+ && ! TREE_PUBLIC (decl)
+ && (warn_unused_function
+ || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
{
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- pedwarn ("%J'%F' used but never defined", decl, decl);
+ pedwarn ("%J%qF used but never defined", decl, decl);
else
- warning ("%J'%F' declared `static' but never defined", decl, decl);
+ warning ("%J%qF 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. */
&& ! TREE_USED (DECL_NAME (decl))
&& ! DECL_EXTERNAL (decl)
- && ! TREE_PUBLIC (decl)
- /* A volatile variable might be used in some non-obvious way. */
- && ! TREE_THIS_VOLATILE (decl)
- /* Global register variables must be declared to reserve them. */
- && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
- /* Otherwise, ask the language. */
- && (*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. */
- if (errorcount == 0 && sorrycount == 0)
- {
- timevar_push (TV_SYMOUT);
- (*debug_hooks->global_decl) (decl);
- timevar_pop (TV_SYMOUT);
- }
- }
-}
-
-/* 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. */
-
-void
-push_srcloc (const char *file, int line)
-{
- struct file_stack *fs;
-
- fs = xmalloc (sizeof (struct file_stack));
- fs->location = input_location;
- fs->next = input_file_stack;
- input_filename = file;
- input_line = line;
- input_file_stack = fs;
- input_file_stack_tick++;
-}
-
-/* Pop the top entry off the stack of presently open source files.
- Restore the INPUT_LOCATION from the new topmost entry on the
- stack. */
-
-void
-pop_srcloc (void)
-{
- struct file_stack *fs;
-
- fs = input_file_stack;
- input_location = fs->location;
- input_file_stack = fs->next;
- free (fs);
- input_file_stack_tick++;
-}
-
-/* Compile an entire translation unit. Write a file of assembly
- output and various debugging dumps. */
-
-static void
-compile_file (void)
-{
- /* Initialize yet another pass. */
-
- init_final (main_input_filename);
- coverage_init (aux_base_name);
-
- timevar_push (TV_PARSE);
-
- /* Call the parser, which parses the entire file (calling
- rest_of_compilation for each function). */
- (*lang_hooks.parse_file) (set_yydebug);
-
- /* In case there were missing block closers,
- get us back to the global binding level. */
- (*lang_hooks.clear_binding_stack) ();
-
- /* Compilation is now finished except for writing
- what's left of the symbol table output. */
- timevar_pop (TV_PARSE);
-
- if (flag_syntax_only)
- return;
-
- (*lang_hooks.decls.final_write_globals)();
-
- cgraph_varpool_assemble_pending_decls ();
-
- /* This must occur after the loop to output deferred functions.
- Else the coverage initializer would not be emitted if all the
- functions in this compilation unit were deferred. */
- coverage_finish ();
-
- /* Write out any pending weak symbol declarations. */
-
- weak_finish ();
-
- /* Do dbx symbols. */
- timevar_push (TV_SYMOUT);
-
-#ifdef DWARF2_UNWIND_INFO
- if (dwarf2out_do_frame ())
- dwarf2out_frame_finish ();
-#endif
-
- (*debug_hooks->finish) (main_input_filename);
- timevar_pop (TV_SYMOUT);
-
- /* Output some stuff at end of file if nec. */
-
- dw2_output_indirect_constants ();
-
- 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
- the version of GCC which compiled this code. The format of the .ident
- string is patterned after the ones produced by native SVR4 compilers. */
-#ifdef IDENT_ASM_OP
- if (!flag_no_ident)
- fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
- IDENT_ASM_OP, version_string);
-#endif
-
- 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. */
-
-void
-rest_of_decl_compilation (tree decl,
- const char *asmspec,
- int top_level,
- int at_end)
-{
- /* We deferred calling assemble_alias so that we could collect
- other attributes such as visibility. Emit the alias now. */
- {
- 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);
- }
- }
-
- /* 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)
- {
- timevar_push (TV_VARCONST);
-
- if (asmspec)
- make_decl_rtl (decl, asmspec);
-
- /* Don't output anything when a tentative file-scope definition
- is seen. But at end of compilation, do output code for them. */
- if ((at_end || !DECL_DEFER_OUTPUT (decl)) && !DECL_EXTERNAL (decl))
- {
- if (flag_unit_at_a_time && !cgraph_global_info_ready
- && TREE_CODE (decl) != FUNCTION_DECL && top_level)
- cgraph_varpool_finalize_decl (decl);
- else
- assemble_variable (decl, top_level, at_end, 0);
- }
-
-#ifdef ASM_FINISH_DECLARE_OBJECT
- if (decl == last_assemble_variable_decl)
- {
- ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
- top_level, at_end);
- }
-#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)
-{
-#if defined (HAVE_ATTR_length)
- /* If flow2 creates new instructions which need splitting
- and scheduling after reload is not done, they might not be
- splitten until final which doesn't allow splitting
- if HAVE_ATTR_length. */
-#ifdef INSN_SCHEDULING
- if (optimize && !flag_schedule_insns_after_reload)
-#else
- if (optimize)
-#endif
- {
- timevar_push (TV_SHORTEN_BRANCH);
- split_all_insns (1);
- timevar_pop (TV_SHORTEN_BRANCH);
- }
-#endif
-
- 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 = 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);
-}
-
-static void
-rest_of_handle_web (tree decl, rtx insns)
-{
- open_dump_file (DFI_web, decl);
- timevar_push (TV_WEB);
- web_main ();
- delete_trivially_dead_insns (insns, max_reg_num ());
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- timevar_pop (TV_WEB);
- close_dump_file (DFI_web, print_rtl_with_bb, insns);
- reg_scan (get_insns (), max_reg_num (), 0);
-}
-
-/* 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 optimizations based on expression value profiles. */
-static void
-rest_of_handle_value_profile_transformations (tree decl, rtx insns)
-{
- open_dump_file (DFI_vpt, decl);
- timevar_push (TV_VPT);
-
- if (value_profile_transformations ())
- cleanup_cfg (CLEANUP_EXPENSIVE);
-
- timevar_pop (TV_VPT);
- close_dump_file (DFI_vpt, print_rtl_with_bb, insns);
-}
-
-/* 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_addressof (tree decl, rtx insns)
-{
- open_dump_file (DFI_addressof, decl);
-
- purge_addressof (insns);
- if (optimize && purge_all_dead_edges (0))
- delete_unreachable_blocks ();
- 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 (cfun->rtl_inline_init)
- return 0;
- cfun->rtl_inline_init = 1;
-
- /* 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 && lose && DECL_INLINE (decl))
- {
- char *msg = concat ("%J", lose, NULL);
- warning (msg, decl);
- free (msg);
- }
- 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
- 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) && DECL_SAVED_INSNS (decl)->saved_for_inline)
- 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);
- if (purge_all_dead_edges (0))
- delete_unreachable_blocks ();
-
- 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 optimizations. It might be better to do them a bit
- sooner, but we want the profile feedback to work more
- efficiently. */
-static void
-rest_of_handle_loop2 (tree decl, rtx insns)
-{
- struct loops *loops;
- timevar_push (TV_LOOP);
- open_dump_file (DFI_loop2, decl);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
-
- loops = loop_optimizer_init (rtl_dump_file);
-
- if (loops)
- {
- /* The optimizations: */
- if (flag_unswitch_loops)
- unswitch_loops (loops);
-
- if (flag_peel_loops || flag_unroll_loops)
- unroll_and_peel_loops (loops,
- (flag_peel_loops ? UAP_PEEL : 0) |
- (flag_unroll_loops ? UAP_UNROLL : 0) |
- (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0));
-
- loop_optimizer_finalize (loops, rtl_dump_file);
- }
-
- cleanup_cfg (CLEANUP_EXPENSIVE);
- delete_trivially_dead_insns (insns, max_reg_num ());
- reg_scan (insns, max_reg_num (), 0);
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ());
- timevar_pop (TV_LOOP);
- ggc_collect ();
-}
-
-/* This is called from finish_function (within langhooks.parse_file)
- after each top-level definition is parsed.
- It is supposed to compile that function or variable
- and output the assembler code for it.
- After we return, the tree storage is freed. */
-
-void
-rest_of_compilation (tree decl)
-{
- rtx insns;
- int rebuild_label_notes_after_reload;
-
- timevar_push (TV_REST_OF_COMPILATION);
-
- /* Register rtl specific functions for cfg. */
- rtl_register_cfg_hooks ();
-
- /* Now that we're out of the frontend, we shouldn't have any more
- CONCATs anywhere. */
- generating_concat_p = 0;
-
- /* When processing delayed functions, prepare_function_start() won't
- have been run to re-initialize it. */
- cse_not_expected = ! optimize;
-
- /* First, make sure that NOTE_BLOCK is set correctly for each
- NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */
- if (!cfun->x_whole_function_mode_p)
- identify_blocks ();
-
- /* In function-at-a-time mode, we do not attempt to keep the BLOCK
- tree in sensible shape. So, we just recalculate it here. */
- if (cfun->x_whole_function_mode_p)
- reorder_blocks ();
-
- init_flow ();
-
- if (rest_of_handle_inlining (decl))
- goto exit_rest_of_compilation;
-
- /* If we're emitting a nested function, make sure its parent gets
- emitted as well. Doing otherwise confuses debug info. */
- {
- tree parent;
- for (parent = DECL_CONTEXT (current_function_decl);
- parent != NULL_TREE;
- parent = get_containing_scope (parent))
- if (TREE_CODE (parent) == FUNCTION_DECL)
- TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1;
- }
-
- /* We are now committed to emitting code for this function. Do any
- preparation, such as emitting abstract debug info for the inline
- before it gets mangled by optimization. */
- if (DECL_INLINE (decl))
- (*debug_hooks->outlining_inline_function) (decl);
-
- /* Remove any notes we don't need. That will make iterating
- over the instruction sequence faster, and allow the garbage
- collector to reclaim the memory used by the notes. */
- remove_unnecessary_notes ();
- reorder_blocks ();
-
- ggc_collect ();
-
- /* Initialize some variables used by the optimizers. */
- init_function_for_compilation ();
-
- if (! DECL_DEFER_OUTPUT (decl))
- TREE_ASM_WRITTEN (decl) = 1;
-
- /* Now that integrate will no longer see our rtl, we need not
- distinguish between the return value of this function and the
- return value of called functions. Also, we can remove all SETs
- of subregs of hard registers; they are only here because of
- integrate. Also, we can now initialize pseudos intended to
- carry magic hard reg data throughout the function. */
- rtx_equal_function_value_matters = 0;
- purge_hard_subreg_sets (get_insns ());
-
- /* Early return if there were errors. We can run afoul of our
- consistency checks, and there's not really much point in fixing them.
- Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */
- if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
- || errorcount || sorrycount)
- goto exit_rest_of_compilation;
-
- timevar_push (TV_JUMP);
- open_dump_file (DFI_sibling, decl);
- insns = get_insns ();
- rebuild_jump_labels (insns);
- find_exception_handler_labels ();
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
-
- delete_unreachable_blocks ();
-
- /* We have to issue these warnings now already, because CFG cleanups
- further down may destroy the required information. */
- check_function_return_warnings ();
-
- /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */
- if (flag_guess_branch_prob)
- {
- timevar_push (TV_BRANCH_PROB);
- note_prediction_to_br_prob ();
- timevar_pop (TV_BRANCH_PROB);
- }
-
- if (flag_optimize_sibling_calls)
- rest_of_handle_sibling_calls (insns);
-
- timevar_pop (TV_JUMP);
-
- insn_locators_initialize ();
- /* Complete generation of exception handling code. */
- if (doing_eh (0))
- {
- timevar_push (TV_JUMP);
- open_dump_file (DFI_eh, decl);
-
- finish_eh_generation ();
-
- close_dump_file (DFI_eh, print_rtl, get_insns ());
- timevar_pop (TV_JUMP);
- }
-
- /* Delay emitting hard_reg_initial_value sets until after EH landing pad
- generation, which might create new sets. */
- emit_initial_value_sets ();
-
-#ifdef FINALIZE_PIC
- /* If we are doing position-independent code generation, now
- is the time to output special prologues and epilogues.
- We do not want to do this earlier, because it just clutters
- up inline functions with meaningless insns. */
- if (flag_pic)
- FINALIZE_PIC;
-#endif
-
- insns = get_insns ();
-
- /* Copy any shared structure that should not be shared. */
- unshare_all_rtl (current_function_decl, insns);
-
-#ifdef SETJMP_VIA_SAVE_AREA
- /* This must be performed before virtual register instantiation.
- Please be aware the everything in the compiler that can look
- at the RTL up to this point must understand that REG_SAVE_AREA
- is just like a use of the REG contained inside. */
- if (current_function_calls_alloca)
- optimize_save_area_alloca (insns);
-#endif
-
- /* Instantiate all virtual registers. */
- instantiate_virtual_regs (current_function_decl, insns);
-
- open_dump_file (DFI_jump, decl);
-
- /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
- are initialized and to compute whether control can drop off the end
- of the function. */
-
- timevar_push (TV_JUMP);
- /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this
- before jump optimization switches branch directions. */
- if (flag_guess_branch_prob)
- expected_value_to_br_prob ();
-
- reg_scan (insns, max_reg_num (), 0);
- rebuild_jump_labels (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- delete_trivially_dead_insns (insns, max_reg_num ());
- if (rtl_dump_file)
- dump_flow_info (rtl_dump_file);
- cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP
- | (flag_thread_jumps ? CLEANUP_THREADING : 0));
-
- if (optimize)
- {
- free_bb_for_insn ();
- copy_loop_headers (insns);
- find_basic_blocks (insns, max_reg_num (), rtl_dump_file);
- }
- purge_line_number_notes (insns);
-
- timevar_pop (TV_JUMP);
- close_dump_file (DFI_jump, print_rtl, insns);
-
- /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
- if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
- goto exit_rest_of_compilation;
-
- /* Long term, this should probably move before the jump optimizer too,
- but I didn't want to disturb the rtl_dump_and_exit and related
- stuff at this time. */
- if (optimize > 0 && flag_ssa)
- insns = rest_of_handle_ssa (decl, insns);
-
- timevar_push (TV_JUMP);
-
- if (optimize)
- cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP);
-
- if (flag_delete_null_pointer_checks)
- rest_of_handle_null_pointer (decl, insns);
-
- /* Jump optimization, and the removal of NULL pointer checks, may
- have reduced the number of instructions substantially. CSE, and
- future passes, allocate arrays whose dimensions involve the
- maximum instruction UID, so if we can reduce the maximum UID
- we'll save big on memory. */
- renumber_insns (rtl_dump_file);
- timevar_pop (TV_JUMP);
-
- close_dump_file (DFI_jump, print_rtl_with_bb, insns);
-
- ggc_collect ();
-
- if (optimize > 0)
- rest_of_handle_cse (decl, insns);
-
- rest_of_handle_addressof (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 (flag_web)
- rest_of_handle_web (decl, insns);
-
- if (optimize > 0
- || profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- {
- rest_of_handle_branch_prob (decl, insns);
-
- if (flag_branch_probabilities
- && flag_profile_values
- && flag_value_profile_transformations)
- rest_of_handle_value_profile_transformations (decl, insns);
-
- /* Remove the death notes created for vpt. */
- if (flag_profile_values)
- count_or_remove_death_notes (NULL, 1);
- }
-
- 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 ();
+ && ! TREE_PUBLIC (decl)
+ /* A volatile variable might be used in some non-obvious way. */
+ && ! TREE_THIS_VOLATILE (decl)
+ /* Global register variables must be declared to reserve them. */
+ && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
+ /* Otherwise, ask the language. */
+ && lang_hooks.decls.warn_unused_global (decl))
+ warning ("%J%qD defined but not used", decl, decl);
- ggc_collect ();
+ /* Avoid confusing the debug information machinery when there are
+ errors. */
+ if (errorcount == 0 && sorrycount == 0)
+ {
+ timevar_push (TV_SYMOUT);
+ (*debug_hooks->global_decl) (decl);
+ timevar_pop (TV_SYMOUT);
+ }
}
+}
- 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
+/* 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 (optimize > 0)
+ if (DECL_P (node))
{
- if (flag_rename_registers || flag_cprop_registers)
- rest_of_handle_regrename (decl, insns);
-
- rest_of_handle_reorder_blocks (decl, insns);
+ expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node));
+ warning ("%qs is deprecated (declared at %s:%d)",
+ IDENTIFIER_POINTER (DECL_NAME (node)),
+ xloc.file, xloc.line);
}
-
- if (flag_if_conversion2)
+ else if (TYPE_P (node))
{
- timevar_push (TV_IFCVT2);
- open_dump_file (DFI_ce3, decl);
+ const char *what = NULL;
+ tree decl = TYPE_STUB_DECL (node);
- if_convert (1);
+ if (TYPE_NAME (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)));
+ }
- close_dump_file (DFI_ce3, print_rtl_with_bb, insns);
- timevar_pop (TV_IFCVT2);
+ if (decl)
+ {
+ expanded_location xloc
+ = expand_location (DECL_SOURCE_LOCATION (decl));
+ if (what)
+ warning ("%qs is deprecated (declared at %s:%d)", what,
+ xloc.file, xloc.line);
+ else
+ warning ("type is deprecated (declared at %s:%d)",
+ xloc.file, xloc.line);
+ }
+ else
+ {
+ if (what)
+ warning ("%qs is deprecated", what);
+ else
+ warning ("type is deprecated");
+ }
}
+}
- 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
+/* 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. */
-#ifdef STACK_REGS
- rest_of_handle_stack_regs (decl, insns);
+void
+#ifdef USE_MAPPED_LOCATION
+push_srcloc (location_t fline)
+#else
+push_srcloc (const char *file, int line)
#endif
+{
+ struct file_stack *fs;
- 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);
+ fs = xmalloc (sizeof (struct file_stack));
+ fs->location = input_location;
+ fs->next = input_file_stack;
+#ifdef USE_MAPPED_LOCATION
+ input_location = fline;
+#else
+ input_filename = file;
+ input_line = line;
#endif
+ input_file_stack = fs;
+ input_file_stack_tick++;
+}
-#if defined (HAVE_ATTR_length) && !defined (STACK_REGS)
- timevar_push (TV_SHORTEN_BRANCH);
- split_all_insns_noflow ();
- timevar_pop (TV_SHORTEN_BRANCH);
-#endif
+/* Pop the top entry off the stack of presently open source files.
+ Restore the INPUT_LOCATION from the new topmost entry on the
+ stack. */
- convert_to_eh_region_ranges ();
+void
+pop_srcloc (void)
+{
+ struct file_stack *fs;
- /* Shorten branches. */
- timevar_push (TV_SHORTEN_BRANCH);
- shorten_branches (get_insns ());
- timevar_pop (TV_SHORTEN_BRANCH);
+ fs = input_file_stack;
+ input_location = fs->location;
+ input_file_stack = fs->next;
+ free (fs);
+ input_file_stack_tick++;
+}
- 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;
+/* Compile an entire translation unit. Write a file of assembly
+ output and various debugging dumps. */
- rest_of_handle_final (decl, insns);
+static void
+compile_file (void)
+{
+ /* Initialize yet another pass. */
- /* Write DBX symbols if requested. */
+ init_cgraph ();
+ init_final (main_input_filename);
+ coverage_init (aux_base_name);
- /* 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_PARSE);
- timevar_push (TV_SYMOUT);
- (*debug_hooks->function_decl) (decl);
- timevar_pop (TV_SYMOUT);
+ /* Call the parser, which parses the entire file (calling
+ rest_of_compilation for each function). */
+ lang_hooks.parse_file (set_yydebug);
- exit_rest_of_compilation:
+ /* In case there were missing block closers,
+ get us back to the global binding level. */
+ lang_hooks.clear_binding_stack ();
- coverage_end_function ();
+ /* Compilation is now finished except for writing
+ what's left of the symbol table output. */
+ timevar_pop (TV_PARSE);
- /* 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
+ if (flag_syntax_only)
+ return;
- reload_completed = 0;
- epilogue_completed = 0;
- flow2_completed = 0;
- no_new_pseudos = 0;
+ lang_hooks.decls.final_write_globals ();
- timevar_push (TV_FINAL);
+ cgraph_varpool_assemble_pending_decls ();
- /* Clear out the insn_length contents now that they are no
- longer valid. */
- init_insn_lengths ();
+ /* This must occur after the loop to output deferred functions.
+ Else the coverage initializer would not be emitted if all the
+ functions in this compilation unit were deferred. */
+ coverage_finish ();
- /* Show no temporary slots allocated. */
- init_temp_slots ();
+ /* Likewise for mudflap static object registrations. */
+ if (flag_mudflap)
+ mudflap_finish_file ();
- free_basic_block_vars (0);
- free_bb_for_insn ();
+ /* Write out any pending weak symbol declarations. */
- timevar_pop (TV_FINAL);
+ weak_finish ();
- 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;
- }
+ /* Do dbx symbols. */
+ timevar_push (TV_SYMOUT);
- /* 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.
+#ifdef DWARF2_UNWIND_INFO
+ if (dwarf2out_do_frame ())
+ dwarf2out_frame_finish ();
+#endif
- ??? Maybe it isn't necessary for expand_start_function to call this
- anymore if we do it here? */
+ (*debug_hooks->finish) (main_input_filename);
+ timevar_pop (TV_SYMOUT);
- init_recog_no_volatile ();
+ /* Output some stuff at end of file if nec. */
- /* 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);
- DECL_SAVED_INSNS (decl) = 0;
- }
- cfun = 0;
+ dw2_output_indirect_constants ();
- ggc_collect ();
+ /* Attach a special .ident directive to the end of the file to identify
+ the version of GCC which compiled this code. The format of the .ident
+ string is patterned after the ones produced by native SVR4 compilers. */
+#ifdef IDENT_ASM_OP
+ if (!flag_no_ident)
+ fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n",
+ IDENT_ASM_OP, version_string);
+#endif
- timevar_pop (TV_REST_OF_COMPILATION);
+ /* This must be at the end. Some target ports emit end of file directives
+ into the assembly file here, and hence we can not output anything to the
+ assembly file after this point. */
+ targetm.asm_out.file_end ();
}
/* Display help for target options. */
-void
+void
display_target_options (void)
{
int undoc, i;
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;
}
#endif
if (!valid_target_option)
- error ("invalid option `%s'", name);
+ error ("invalid option %qs", name);
}
/* Print version information to FILE.
pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term,
_("options enabled: "), "");
- for (j = 0; j < ARRAY_SIZE (f_options); j++)
- if (*f_options[j].variable == f_options[j].on_value)
+ for (j = 0; j < cl_options_count; j++)
+ {
+ if (!cl_options[j].flag_var
+ || !(cl_options[j].flags & CL_REPORT))
+ continue;
+
+ if (cl_options[j].has_set_value)
+ {
+ if (*cl_options[j].flag_var != cl_options[j].set_value)
+ continue;
+ }
+ else
+ {
+ if (!*cl_options[j].flag_var)
+ continue;
+ }
+
pos = print_single_switch (file, pos, max, indent, sep, term,
- "-f", f_options[j].string);
+ "", cl_options[j].opt_text);
+ }
/* Print target specific options. */
if (!strcmp (asm_file_name, "-"))
asm_out_file = stdout;
else
- asm_out_file = fopen (asm_file_name, "w+");
+ asm_out_file = fopen (asm_file_name, "w+b");
if (asm_out_file == 0)
- fatal_error ("can't open %s for writing: %m", asm_file_name);
+ fatal_error ("can%'t open %s for writing: %m", asm_file_name);
}
#ifdef IO_BUFFER_SIZE
}
}
+/* 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;
+ }
+ }
+ gcc_unreachable ();
+ }
+ 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)
{
tree t = va_arg (*text->args_ptr, tree);
const char *n = DECL_NAME (t)
- ? (*lang_hooks.decl_printable_name) (t, 2)
+ ? lang_hooks.decl_printable_name (t, 2)
: "<anonymous>";
pp_string (pp, n);
}
table. */
init_ggc ();
init_stringpool ();
+ linemap_init (&line_table);
init_ttree ();
/* Initialize register usage now so switches may override. */
/* This must be done after add_params but before argument processing. */
init_ggc_heuristics();
+ init_tree_optimization_passes ();
}
/* Process the options that have been parsed. */
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);
+#ifndef USE_MAPPED_LOCATION
input_filename = main_input_filename;
+#endif
#ifdef OVERRIDE_OPTIONS
/* Some machines may reject certain combinations of options. */
OVERRIDE_OPTIONS;
#endif
+ if (flag_short_enums == 2)
+ flag_short_enums = targetm.default_short_enums ();
+
/* Set aux_base_name if not already set. */
if (aux_base_name)
;
if (flag_unroll_all_loops)
flag_unroll_loops = 1;
- if (flag_unroll_loops)
- {
- flag_old_unroll_loops = 0;
- flag_old_unroll_all_loops = 0;
- }
-
- if (flag_old_unroll_all_loops)
- flag_old_unroll_loops = 1;
-
- /* Old loop unrolling requires that strength_reduction be on also. Silently
- turn on strength reduction here if it isn't already on. Also, the loop
- unrolling code assumes that cse will be run after loop, so that must
- be turned on also. */
- if (flag_old_unroll_loops)
- {
- flag_strength_reduce = 1;
- flag_rerun_cse_after_loop = 1;
- }
+ /* The loop unrolling code assumes that cse will be run after loop. */
if (flag_unroll_loops || flag_peel_loops)
flag_rerun_cse_after_loop = 1;
+ /* If explicitly asked to run new loop optimizer, switch off the old
+ one. */
+ if (flag_loop_optimize2)
+ flag_loop_optimize = 0;
+
+ /* Enable new loop optimizer pass if any of its optimizations is called. */
+ if (flag_move_loop_invariants
+ || flag_unswitch_loops
+ || flag_peel_loops
+ || flag_unroll_loops
+ || flag_branch_on_count_reg)
+ flag_loop_optimize2 = 1;
+
if (flag_non_call_exceptions)
flag_asynchronous_unwind_tables = 1;
if (flag_asynchronous_unwind_tables)
if (flag_value_profile_transformations)
flag_profile_values = 1;
+ /* Speculative prefetching implies the value profiling. We also switch off
+ the prefetching in the loop optimizer, so that we do not emit double
+ prefetches. TODO -- we should teach these two to cooperate; the loop
+ based prefetching may sometimes do a better job, especially in connection
+ with reuse analysis. */
+ if (flag_speculative_prefetching)
+ {
+ flag_profile_values = 1;
+ flag_prefetch_loop_arrays = 0;
+ }
+
/* Warn about options that are not supported on this machine. */
#ifndef INSN_SCHEDULING
if (flag_schedule_insns || flag_schedule_insns_after_reload)
warning ("this target machine does not have delayed branches");
#endif
+ if (flag_tree_based_profiling && flag_profile_values)
+ sorry ("value-based profiling not yet implemented in trees.");
+
user_label_prefix = USER_LABEL_PREFIX;
if (flag_leading_underscore != -1)
{
/* Now we know write_symbols, set up the debug hooks based on it.
By default we do nothing for debug output. */
+ if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG)
+ default_debug_hooks = &do_nothing_debug_hooks;
+#if defined(DBX_DEBUGGING_INFO)
+ else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG)
+ default_debug_hooks = &dbx_debug_hooks;
+#endif
+#if defined(XCOFF_DEBUGGING_INFO)
+ else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG)
+ default_debug_hooks = &xcoff_debug_hooks;
+#endif
+#ifdef SDB_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG)
+ default_debug_hooks = &sdb_debug_hooks;
+#endif
+#ifdef DWARF2_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG)
+ default_debug_hooks = &dwarf2_debug_hooks;
+#endif
+#ifdef VMS_DEBUGGING_INFO
+ else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG
+ || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG)
+ default_debug_hooks = &vmsdbg_debug_hooks;
+#endif
+
+ debug_hooks = &do_nothing_debug_hooks;
if (write_symbols == NO_DEBUG)
- debug_hooks = &do_nothing_debug_hooks;
+ ;
#if defined(DBX_DEBUGGING_INFO)
else if (write_symbols == DBX_DEBUG)
debug_hooks = &dbx_debug_hooks;
else if (write_symbols == SDB_DEBUG)
debug_hooks = &sdb_debug_hooks;
#endif
-#ifdef DWARF_DEBUGGING_INFO
- else if (write_symbols == DWARF_DEBUG)
- debug_hooks = &dwarf_debug_hooks;
-#endif
#ifdef DWARF2_DEBUGGING_INFO
else if (write_symbols == DWARF2_DEBUG)
debug_hooks = &dwarf2_debug_hooks;
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, flag_rename_registers if the user has
+ not specified them. */
+ if (debug_info_level < DINFO_LEVEL_NORMAL
+ || debug_hooks->var_location == do_nothing_debug_hooks.var_location)
+ {
+ if (flag_var_tracking == 1)
+ {
+ if (debug_info_level < DINFO_LEVEL_NORMAL)
+ warning ("variable tracking requested, but useless unless "
+ "producing debug info");
+ else
+ warning ("variable tracking requested, but not supported "
+ "by this debug format");
+ }
+ flag_var_tracking = 0;
+ }
+
+ if (flag_rename_registers == AUTODETECT_FLAG_VAR_TRACKING)
+ flag_rename_registers = default_debug_hooks->var_location
+ != do_nothing_debug_hooks.var_location;
+
+ if (flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING)
+ flag_var_tracking = optimize >= 1;
+
/* If auxiliary info generation is desired, open the output file.
This goes in the same directory as the source file--unlike
all the other output files. */
{
aux_info_file = fopen (aux_info_file_name, "w");
if (aux_info_file == 0)
- fatal_error ("can't open %s: %m", aux_info_file_name);
+ fatal_error ("can%'t open %s: %m", aux_info_file_name);
}
if (! targetm.have_named_sections)
warning ("-fprefetch-loop-arrays not supported for this target");
flag_prefetch_loop_arrays = 0;
}
+ if (flag_speculative_prefetching)
+ {
+ if (flag_speculative_prefetching_set)
+ warning ("-fspeculative-prefetching not supported for this target");
+ flag_speculative_prefetching = 0;
+ }
#else
if (flag_prefetch_loop_arrays && !HAVE_prefetch)
{
warning ("-fprefetch-loop-arrays not supported for this target (try -march switches)");
flag_prefetch_loop_arrays = 0;
}
+ if (flag_speculative_prefetching && !HAVE_prefetch)
+ {
+ if (flag_speculative_prefetching_set)
+ warning ("-fspeculative-prefetching not supported for this target (try -march switches)");
+ flag_speculative_prefetching = 0;
+ }
#endif
/* This combination of options isn't handled for i386 targets and doesn't
warning ("-ffunction-sections may affect debugging on some targets");
#endif
- /* The presence of IEEE signaling NaNs, implies all math can trap. */
- if (flag_signaling_nans)
- flag_trapping_math = 1;
+ /* The presence of IEEE signaling NaNs, implies all math can trap. */
+ if (flag_signaling_nans)
+ flag_trapping_math = 1;
}
/* Initialize the compiler back end. */
/* Enable line number info for traceback. */
|| debug_info_level > DINFO_LEVEL_NONE
#endif
- || flag_test_coverage
- || warn_notreached);
+ || flag_test_coverage);
init_regs ();
init_fake_stack_mems ();
static int
lang_dependent_init (const char *name)
{
+ location_t save_loc = input_location;
if (dump_base_name == 0)
- dump_base_name = name ? name : "gccdump";
+ dump_base_name = name && name[0] ? name : "gccdump";
/* Other front-end initialization. */
- if ((*lang_hooks.init) () == 0)
+#ifdef USE_MAPPED_LOCATION
+ input_location = BUILTINS_LOCATION;
+#else
+ input_filename = "<built-in>";
+ input_line = 0;
+#endif
+ if (lang_hooks.init () == 0)
return 0;
+ input_location = save_loc;
init_asm_output (name);
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. */
/* Language-dependent initialization. Returns true on success. */
if (lang_dependent_init (main_input_filename))
- {
- if (flag_unit_at_a_time)
- {
- open_dump_file (DFI_cgraph, NULL);
- cgraph_dump_file = rtl_dump_file;
- rtl_dump_file = NULL;
- }
-
- compile_file ();
-
- if (flag_unit_at_a_time)
- {
- rtl_dump_file = cgraph_dump_file;
- cgraph_dump_file = NULL;
- close_dump_file (DFI_cgraph, NULL, NULL_RTX);
- }
- }
+ compile_file ();
finalize ();
}
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