#include "regs.h"
#include "timevar.h"
#include "diagnostic.h"
-#include "ssa.h"
#include "params.h"
#include "reload.h"
#include "dwarf2asm.h"
#include "cgraph.h"
#include "opts.h"
#include "coverage.h"
+#include "value-prof.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
/* 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_jump_bypass (tree, rtx);
static void rest_of_handle_sibling_calls (rtx);
static void rest_of_handle_null_pointer (tree, rtx);
-static void rest_of_handle_addresof (tree, rtx);
+static void rest_of_handle_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_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 bool rest_of_handle_new_regalloc (tree, rtx);
+static bool rest_of_handle_old_regalloc (tree, rtx);
static void rest_of_handle_regrename (tree, rtx);
static void rest_of_handle_reorder_blocks (tree, rtx);
#ifdef STACK_REGS
/* Debug hooks - dependent upon command line options. */
-const struct gcc_debug_hooks *debug_hooks = &do_nothing_debug_hooks;
+const struct gcc_debug_hooks *debug_hooks;
/* Describes a dump file. */
DFI_sibling,
DFI_eh,
DFI_jump,
- DFI_ssa,
- DFI_ssa_ccp,
- DFI_ssa_dce,
- DFI_ussa,
DFI_null,
DFI_cse,
DFI_addressof,
DFI_bypass,
DFI_cfg,
DFI_bp,
+ DFI_vpt,
DFI_ce1,
DFI_tracer,
DFI_loop2,
+ DFI_web,
DFI_cse2,
DFI_life,
DFI_combine,
Remaining -d letters:
- " m q "
- " JK O Q V YZ"
+ " e m q "
+ " JK O Q WXY "
*/
static struct dump_file_info dump_file[DFI_MAX] =
{ "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 },
{ "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 },
{ "loop2", 'L', 1, 0, 0 },
+ { "web", 'Z', 0, 0, 0 },
{ "cse2", 't', 1, 0, 0 },
{ "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */
{ "combine", 'c', 1, 0, 0 },
const char *asm_file_name;
-/* Type(s) of debugging information we are producing (if any).
- See flags.h for the definitions of the different possible
- types of debugging information. */
-enum debug_info_type write_symbols = NO_DEBUG;
-
-/* Level of debugging information we are producing. See flags.h
- for the definitions of the different possible levels. */
-enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
-
-/* Nonzero means use GNU-only extensions in the generated symbolic
- debugging information. */
-/* Currently, this only has an effect when write_symbols is set to
- DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
-int use_gnu_debug_info_extensions = 0;
-
/* Nonzero means do optimizations. -O.
Particular numeric values stand for particular amounts of optimization;
thus, -O2 stores 2 here. However, the optimizations beyond the basic
int flag_profile_values = 0;
+/* Nonzero if value histograms should be used to optimize code. */
+int flag_value_profile_transformations = 0;
+
/* Nonzero if generating info for gcov to calculate line test coverage. */
int flag_test_coverage = 0;
be saved across function calls, if that produces overall better code.
Optional now, so people can test it. */
-#ifdef DEFAULT_CALLER_SAVES
-int flag_caller_saves = 1;
-#else
int flag_caller_saves = 0;
-#endif
/* Nonzero if structures and unions should be returned in memory.
int flag_trapping_math = 1;
+/* Nonzero means disable transformations that assume default floating
+ point rounding behavior. */
+
+int flag_rounding_math = 0;
+
/* Nonzero means disable transformations observable by signaling NaNs.
This option implies that any operation on an IEEE signaling NaN can
generate a (user-visible) trap. */
int flag_syntax_only = 0;
+/* Nonzero means performs web construction pass. */
+
+int flag_web;
+
/* Nonzero means perform loop optimizer. */
int flag_loop_optimize;
int flag_gcse_sm = 1;
+/* Nonzero if we want to perfrom redundant load after store elimination
+ in gcse. */
+
+int flag_gcse_las = 1;
+
/* Perform target register optimization before prologue / epilogue
threading. */
int flag_schedule_speculative_load = 0;
int flag_schedule_speculative_load_dangerous = 0;
+/* The following flags have an effect during scheduling after register
+ allocation:
+
+ flag_sched_stalled_insns means that insns can be moved prematurely from the queue
+ of stalled insns into the ready list.
+
+ flag_sched_stalled_insns_dep controls how many insn groups will be examined
+ for a dependency on a stalled insn that is candidate for premature removal
+ from the queue of stalled insns into the ready list (has an effect only if
+ the flag 'sched_stalled_insns' is set). */
+
+int flag_sched_stalled_insns = 0;
+int flag_sched_stalled_insns_dep = 1;
+
int flag_single_precision_constant;
/* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple
int flag_dump_rtl_in_asm = 0;
-/* -fgnu-linker specifies use of the GNU linker for initializations.
- (Or, more generally, a linker that handles initializations.)
- -fno-gnu-linker says that collect2 will be used. */
-#ifdef USE_COLLECT2
-int flag_gnu_linker = 0;
-#else
-int flag_gnu_linker = 1;
-#endif
-
/* Nonzero means put zero initialized data in the bss section. */
int flag_zero_initialized_in_bss = 1;
-/* Enable SSA. */
-int flag_ssa = 0;
-
-/* Enable ssa conditional constant propagation. */
-int flag_ssa_ccp = 0;
-
-/* Enable ssa aggressive dead code elimination. */
-int flag_ssa_dce = 0;
-
/* Tag all structures with __attribute__(packed). */
int flag_pack_struct = 0;
minimum function alignment. Zero means no alignment is forced. */
int force_align_functions_log;
-/* Table of supported debugging formats. */
-static const struct
-{
- const char *const arg;
- /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
- constant expression, we use NO_DEBUG in its place. */
- const enum debug_info_type debug_type;
- const int use_extensions_p;
- const char *const description;
-} *da,
-debug_args[] =
-{
- { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS,
- N_("Generate debugging info in default format") },
- { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") },
-#ifdef DBX_DEBUGGING_INFO
- { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") },
- { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") },
-#endif
-#ifdef DWARF_DEBUGGING_INFO
- { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") },
- { "dwarf+", DWARF_DEBUG, 1,
- N_("Generate extended DWARF-1 format debug info") },
-#endif
-#ifdef DWARF2_DEBUGGING_INFO
- { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") },
-#endif
-#ifdef XCOFF_DEBUGGING_INFO
- { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") },
- { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") },
-#endif
-#ifdef SDB_DEBUGGING_INFO
- { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") },
-#endif
-#ifdef VMS_DEBUGGING_INFO
- { "vms", VMS_DEBUG, 0, N_("Generate VMS format debug info") },
-#endif
- { 0, 0, 0, 0 }
-};
-
typedef struct
{
const char *const string;
/* 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;
{"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 },
{"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 },
{"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 },
{"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 },
{"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 },
{ "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 },
FILE *rtl_dump_file = NULL;
FILE *cgraph_dump_file = NULL;
+/* The current working directory of a translation. It's generally the
+ directory from which compilation was initiated, but a preprocessed
+ file may specify the original directory in which it was
+ created. */
+
+static const char *src_pwd;
+
+/* Initialize src_pwd with the given string, and return true. If it
+ was already initialized, return false. As a special case, it may
+ be called with a NULL argument to test whether src_pwd has NOT been
+ initialized yet. */
+
+bool
+set_src_pwd (const char *pwd)
+{
+ if (src_pwd)
+ return false;
+
+ src_pwd = xstrdup (pwd);
+ return true;
+}
+
+/* Return the directory from which the translation unit was initiated,
+ in case set_src_pwd() was not called before to assign it a
+ different value. */
+
+const char *
+get_src_pwd (void)
+{
+ if (! src_pwd)
+ src_pwd = getpwd ();
+
+ return src_pwd;
+}
+
+/* Called when the start of a function definition is parsed,
+ this function prints on stderr the name of the function. */
+void
+announce_function (tree decl)
+{
+ if (!quiet_flag)
+ {
+ if (rtl_dump_and_exit)
+ verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
+ else
+ verbatim (" %s", (*lang_hooks.decl_printable_name) (decl, 2));
+ fflush (stderr);
+ pp_needs_newline (global_dc->printer) = true;
+ diagnostic_set_last_function (global_dc);
+ }
+}
+
/* Set up a default flag_random_seed and local_tick, unless the user
already specified one. */
void
output_file_directive (FILE *asm_file, const char *input_name)
{
- int len = strlen (input_name);
- const char *na = input_name + len;
+ int len;
+ const char *na;
+
+ if (input_name == NULL)
+ input_name = "<stdin>";
+
+ len = strlen (input_name);
+ na = input_name + len;
/* NA gets INPUT_NAME sans directory names. */
while (na > input_name)
if (flag_unit_at_a_time
&& cgraph_varpool_node (decl)->finalized)
needed = 0;
- else if (flag_unit_at_a_time
+ else if ((flag_unit_at_a_time && !cgraph_global_info_ready)
&& (TREE_USED (decl)
|| TREE_USED (DECL_ASSEMBLER_NAME (decl))))
/* needed */;
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_INITIAL (decl) != 0
&& DECL_SAVED_INSNS (decl) != 0
+ && DECL_SAVED_INSNS (decl)->saved_for_inline
&& (flag_keep_inline_functions
|| (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
&& ! TREE_PUBLIC (decl))
{
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- pedwarn_with_decl (decl,
- "`%s' used but never defined");
+ pedwarn ("%J'%F' used but never defined", decl, decl);
else
- warning_with_decl (decl,
- "`%s' declared `static' but never defined");
+ warning ("%J'%F' declared `static' but never defined", decl, decl);
/* This symbol is effectively an "extern" declaration now. */
TREE_PUBLIC (decl) = 1;
assemble_external (decl);
/* Warn about static fns or vars defined but not used. */
if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL)
- || (warn_unused_variable && TREE_CODE (decl) == VAR_DECL))
+ /* We don't warn about "static const" variables because the
+ "rcs_id" idiom uses that construction. */
+ || (warn_unused_variable
+ && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
+ && ! DECL_IN_SYSTEM_HEADER (decl)
&& ! TREE_USED (decl)
/* The TREE_USED bit for file-scope decls is kept in the identifier,
to handle multiple external decls in different scopes. */
&& ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
/* Otherwise, ask the language. */
&& (*lang_hooks.decls.warn_unused_global) (decl))
- warning_with_decl (decl, "`%s' defined but not used");
+ warning ("%J'%D' defined but not used", decl, decl);
/* Avoid confusing the debug information machinery when there are
errors. */
}
}
+/* Warn about a use of an identifier which was marked deprecated. */
+void
+warn_deprecated_use (tree node)
+{
+ if (node == 0 || !warn_deprecated_decl)
+ return;
+
+ if (DECL_P (node))
+ warning ("`%s' is deprecated (declared at %s:%d)",
+ IDENTIFIER_POINTER (DECL_NAME (node)),
+ DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
+ else if (TYPE_P (node))
+ {
+ const char *what = NULL;
+ tree decl = TYPE_STUB_DECL (node);
+
+ if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
+ what = IDENTIFIER_POINTER (TYPE_NAME (node));
+ else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
+ && DECL_NAME (TYPE_NAME (node)))
+ what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node)));
+
+ if (what)
+ {
+ if (decl)
+ warning ("`%s' is deprecated (declared at %s:%d)", what,
+ DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
+ else
+ warning ("`%s' is deprecated", what);
+ }
+ else if (decl)
+ warning ("type is deprecated (declared at %s:%d)",
+ DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
+ else
+ warning ("type is deprecated");
+ }
+}
+
/* Save the current INPUT_LOCATION on the top entry in the
INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the
INPUT_LOCATION accordingly. */
{
struct file_stack *fs;
- fs = (struct file_stack *) xmalloc (sizeof (struct file_stack));
+ fs = xmalloc (sizeof (struct file_stack));
fs->location = input_location;
fs->next = input_file_stack;
input_filename = file;
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))
+ is seen. But at end of compilation, do output code for them.
+
+ We do output all variables when unit-at-a-time is active and rely on
+ callgraph code to defer them except for forward declarations
+ (see gcc.c-torture/compile/920624-1.c) */
+ if ((at_end
+ || !DECL_DEFER_OUTPUT (decl)
+ || (flag_unit_at_a_time && DECL_INITIAL (decl)))
+ && !DECL_EXTERNAL (decl))
{
if (flag_unit_at_a_time && !cgraph_global_info_ready
&& TREE_CODE (decl) != FUNCTION_DECL && top_level)
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);
/* 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)
+rest_of_handle_new_regalloc (tree decl, rtx insns)
{
int 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)
+rest_of_handle_old_regalloc (tree decl, rtx insns)
{
int failure;
+ int rebuild_notes;
/* Allocate the reg_renumber array. */
allocate_reg_info (max_regno, FALSE, TRUE);
/* And the reg_equiv_memory_loc array. */
- reg_equiv_memory_loc = (rtx *) xcalloc (max_regno, sizeof (rtx));
+ 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 ();
+ rebuild_notes = local_alloc ();
timevar_pop (TV_LOCAL_ALLOC);
+ /* Local allocation may have turned an indirect jump into a direct
+ jump. If so, we must rebuild the JUMP_LABEL fields of jumping
+ instructions. */
+ if (rebuild_notes)
+ {
+ timevar_push (TV_JUMP);
+
+ rebuild_jump_labels (insns);
+ purge_all_dead_edges (0);
+
+ timevar_pop (TV_JUMP);
+ }
+
if (dump_file[DFI_lreg].enabled)
{
timevar_push (TV_DUMP);
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
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
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);
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. */
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)
timevar_push (TV_BRANCH_PROB);
open_dump_file (DFI_bp, decl);
+
if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
branch_prob ();
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
/* Purge addressofs. */
static void
-rest_of_handle_addresof (tree decl, rtx insns)
+rest_of_handle_addressof (tree decl, rtx insns)
{
open_dump_file (DFI_addressof, decl);
purge_addressof (insns);
- if (optimize)
- purge_all_dead_edges (0);
+ 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);
open_dump_file (DFI_bypass, decl);
cleanup_cfg (CLEANUP_EXPENSIVE);
+ reg_scan (insns, max_reg_num (), 1);
if (bypass_jumps (rtl_dump_file))
{
/* If we are reconsidering an inline function at the end of
compilation, skip the stuff for making it inline. */
- if (DECL_SAVED_INSNS (decl) != 0)
+ 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,
timevar_pop (TV_INTEGRATION);
if (lose || ! optimize)
{
- if (warn_inline && DECL_INLINE (decl))
- warning_with_decl (decl, lose);
+ 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
return true;
}
}
- else {
- /* ??? Note that we used to just make it look like if
- the "inline" keyword was specified when we decide
- to inline it (because of -finline-functions).
- garloff@suse.de, 2002-04-24: Add another flag to
- actually record this piece of information. */
- if (!DECL_INLINE (decl))
- DID_INLINE_FUNC (decl) = 1;
+ else
inlinable = DECL_INLINE (decl) = 1;
- }
}
insns = get_insns ();
if (open_dump_file (DFI_rtl, decl))
{
- if (DECL_SAVED_INSNS (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);
}
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)
tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file);
if (tem)
rebuild_jump_labels (insns);
- purge_all_dead_edges (0);
+ if (purge_all_dead_edges (0))
+ delete_unreachable_blocks ();
delete_trivially_dead_insns (insns, max_reg_num ());
rest_of_compilation (tree decl)
{
rtx insns;
- int rebuild_label_notes_after_reload;
timevar_push (TV_REST_OF_COMPILATION);
/* 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))
+ if (cgraph_function_possibly_inlined_p (decl))
(*debug_hooks->outlining_inline_function) (decl);
/* Remove any notes we don't need. That will make iterating
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)
{
if (flag_optimize_sibling_calls)
rest_of_handle_sibling_calls (insns);
+ /* We have to issue these warnings now already, because CFG cleanups
+ further down may destroy the required information. However, this
+ must be done after the sibcall optimization pass because the barrier
+ emitted for noreturn calls that are candidate for the optimization
+ is folded into the CALL_PLACEHOLDER until after this pass, so the
+ CFG is inaccurate. */
+ check_function_return_warnings ();
+
timevar_pop (TV_JUMP);
insn_locators_initialize ();
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)
if (optimize > 0)
rest_of_handle_cse (decl, insns);
- rest_of_handle_addresof (decl, insns);
+ rest_of_handle_addressof (decl, insns);
ggc_collect ();
if (optimize > 0
|| profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
- rest_of_handle_branch_prob (decl, insns);
+ {
+ 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);
|| flag_unroll_loops))
rest_of_handle_loop2 (decl, insns);
+ if (flag_web)
+ rest_of_handle_web (decl, insns);
+
if (flag_rerun_cse_after_loop)
rest_of_handle_cse2 (decl, insns);
if (flag_new_regalloc)
{
- if (rest_of_handle_new_regalloc (decl, insns,
- &rebuild_label_notes_after_reload))
+ if (rest_of_handle_new_regalloc (decl, insns))
goto exit_rest_of_compilation;
}
else
{
- if (rest_of_handle_old_regalloc (decl, insns,
- &rebuild_label_notes_after_reload))
+ if (rest_of_handle_old_regalloc (decl, insns))
goto exit_rest_of_compilation;
}
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. */
if (! DECL_DEFER_OUTPUT (decl))
{
free_after_compilation (cfun);
-
- /* Clear integrate.c's pointer to the cfun structure we just
- destroyed. */
DECL_SAVED_INSNS (decl) = 0;
}
cfun = 0;
timevar_pop (TV_REST_OF_COMPILATION);
}
-/* Display help for generic options. */
-void
-display_help (void)
-{
- unsigned long i;
-
- for (i = LAST_PARAM; i--;)
- {
- const char *description = compiler_params[i].help;
- const int length = 21 - strlen (compiler_params[i].option);
-
- if (description != NULL && *description != 0)
- printf (" --param %s=<value>%.*s%s\n",
- compiler_params[i].option,
- length > 0 ? length : 1, " ",
- _(description));
- }
-
- for (i = ARRAY_SIZE (debug_args); i--;)
- {
- if (debug_args[i].description != NULL)
- printf (" -g%-21s %s\n",
- debug_args[i].arg, _(debug_args[i].description));
- }
-
- display_target_options ();
-}
-
/* Display help for target options. */
void
display_target_options (void)
"none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms"
};
-/* Parse a -g... command line switch. ARG is the value after the -g.
- It is safe to access 'ARG - 2' to generate the full switch name.
- Return the number of strings consumed. */
-
-void
-decode_g_option (const char *arg)
-{
- static unsigned level = 0;
- /* A lot of code assumes write_symbols == NO_DEBUG if the
- debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
- of what debugging type has been selected). This records the
- selected type. It is an error to specify more than one
- debugging type. */
- static enum debug_info_type selected_debug_type = NO_DEBUG;
- /* Nonzero if debugging format has been explicitly set.
- -g and -ggdb don't explicitly set the debugging format so
- -gdwarf -g3 is equivalent to -gdwarf3. */
- static int type_explicitly_set_p = 0;
-
- /* The maximum admissible debug level value. */
- static const unsigned max_debug_level = 3;
-
- /* Look up ARG in the table. */
- for (da = debug_args; da->arg; da++)
- {
- const int da_len = strlen (da->arg);
-
- if (da_len == 0 || ! strncmp (arg, da->arg, da_len))
- {
- enum debug_info_type type = da->debug_type;
- const char *p = arg + da_len;
-
- if (*p && ! ISDIGIT (*p))
- continue;
-
- /* A debug flag without a level defaults to level 2.
- Note we do not want to call read_integral_parameter
- for that case since it will call atoi which
- will return zero.
-
- ??? We may want to generalize the interface to
- read_integral_parameter to better handle this case
- if this case shows up often. */
- if (*p)
- level = read_integral_parameter (p, 0, max_debug_level + 1);
- else
- level = (level == 0) ? 2 : level;
-
- if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len))
- {
- error ("use -gdwarf -g%d for DWARF v1, level %d",
- level, level);
- if (level == 2)
- error ("use -gdwarf-2 for DWARF v2");
- }
-
- if (level > max_debug_level)
- {
- warning ("\
-ignoring option `%s' due to invalid debug level specification",
- arg - 2);
- level = debug_info_level;
- }
-
- if (type == NO_DEBUG)
- {
- type = PREFERRED_DEBUGGING_TYPE;
-
- if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0)
- {
-#ifdef DWARF2_DEBUGGING_INFO
- type = DWARF2_DEBUG;
-#else
-#ifdef DBX_DEBUGGING_INFO
- type = DBX_DEBUG;
-#endif
-#endif
- }
- }
-
- if (type == NO_DEBUG)
- warning ("`%s': unknown or unsupported -g option", arg - 2);
-
- /* Does it conflict with an already selected type? */
- if (type_explicitly_set_p
- /* -g/-ggdb don't conflict with anything. */
- && da->debug_type != NO_DEBUG
- && type != selected_debug_type)
- warning ("`%s' ignored, conflicts with `-g%s'",
- arg - 2, debug_type_names[(int) selected_debug_type]);
- else
- {
- /* If the format has already been set, -g/-ggdb
- only change the debug level. */
- if (type_explicitly_set_p && da->debug_type == NO_DEBUG)
- /* Don't change debugging type. */
- ;
- else
- {
- selected_debug_type = type;
- type_explicitly_set_p = da->debug_type != NO_DEBUG;
- }
-
- write_symbols = (level == 0
- ? NO_DEBUG
- : selected_debug_type);
- use_gnu_debug_info_extensions = da->use_extensions_p;
- debug_info_level = (enum debug_info_level) level;
- }
-
- break;
- }
- }
-
- if (! da->arg)
- warning ("`-g%s': unknown or unsupported -g option", arg);
-}
-
/* Decode -m switches. */
/* Decode the switch -mNAME. */
if (asm_file_name == 0)
{
int len = strlen (dump_base_name);
- char *dumpname = (char *) xmalloc (len + 6);
+ char *dumpname = xmalloc (len + 6);
memcpy (dumpname, dump_base_name, len + 1);
strip_off_ending (dumpname, len);
strcat (dumpname, ".s");
}
#ifdef IO_BUFFER_SIZE
- setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
+ setvbuf (asm_out_file, xmalloc (IO_BUFFER_SIZE),
_IOFBF, IO_BUFFER_SIZE);
#endif
}
}
+/* Default version of get_pch_validity.
+ By default, every flag difference is fatal; that will be mostly right for
+ most targets, but completely right for very few. */
+
+void *
+default_get_pch_validity (size_t *len)
+{
+#ifdef TARGET_OPTIONS
+ size_t i;
+#endif
+ char *result, *r;
+
+ *len = sizeof (target_flags) + 2;
+#ifdef TARGET_OPTIONS
+ for (i = 0; i < ARRAY_SIZE (target_options); i++)
+ {
+ *len += 1;
+ if (*target_options[i].variable)
+ *len += strlen (*target_options[i].variable);
+ }
+#endif
+
+ result = r = xmalloc (*len);
+ r[0] = flag_pic;
+ r[1] = flag_pie;
+ r += 2;
+ memcpy (r, &target_flags, sizeof (target_flags));
+ r += sizeof (target_flags);
+
+#ifdef TARGET_OPTIONS
+ for (i = 0; i < ARRAY_SIZE (target_options); i++)
+ {
+ const char *str = *target_options[i].variable;
+ size_t l;
+ if (! str)
+ str = "";
+ l = strlen (str) + 1;
+ memcpy (r, str, l);
+ r += l;
+ }
+#endif
+
+ return result;
+}
+
+/* Default version of pch_valid_p. */
+
+const char *
+default_pch_valid_p (const void *data_p, size_t len)
+{
+ const char *data = (const char *)data_p;
+ const char *flag_that_differs = NULL;
+ size_t i;
+
+ /* -fpic and -fpie also usually make a PCH invalid. */
+ if (data[0] != flag_pic)
+ return _("created and used with different settings of -fpic");
+ if (data[1] != flag_pie)
+ return _("created and used with different settings of -fpie");
+ data += 2;
+
+ /* Check target_flags. */
+ if (memcmp (data, &target_flags, sizeof (target_flags)) != 0)
+ {
+ for (i = 0; i < ARRAY_SIZE (target_switches); i++)
+ {
+ int bits;
+ int tf;
+
+ memcpy (&tf, data, sizeof (target_flags));
+
+ bits = target_switches[i].value;
+ if (bits < 0)
+ bits = -bits;
+ if ((target_flags & bits) != (tf & bits))
+ {
+ flag_that_differs = target_switches[i].name;
+ goto make_message;
+ }
+ }
+ abort ();
+ }
+ data += sizeof (target_flags);
+ len -= sizeof (target_flags);
+
+ /* Check string options. */
+#ifdef TARGET_OPTIONS
+ for (i = 0; i < ARRAY_SIZE (target_options); i++)
+ {
+ const char *str = *target_options[i].variable;
+ size_t l;
+ if (! str)
+ str = "";
+ l = strlen (str) + 1;
+ if (len < l || memcmp (data, str, l) != 0)
+ {
+ flag_that_differs = target_options[i].prefix;
+ goto make_message;
+ }
+ data += l;
+ len -= l;
+ }
+#endif
+
+ return NULL;
+
+ make_message:
+ {
+ char *r;
+ asprintf (&r, _("created and used with differing settings of `-m%s'"),
+ flag_that_differs);
+ if (r == NULL)
+ return _("out of memory");
+ return r;
+ }
+}
+
+/* Default tree printer. Handles declarations only. */
+static bool
+default_tree_printer (pretty_printer * pp, text_info *text)
+{
+ switch (*text->format_spec)
+ {
+ case 'D':
+ case 'F':
+ case 'T':
+ {
+ tree t = va_arg (*text->args_ptr, tree);
+ const char *n = DECL_NAME (t)
+ ? (*lang_hooks.decl_printable_name) (t, 2)
+ : "<anonymous>";
+ pp_string (pp, n);
+ }
+ return true;
+
+ default:
+ return false;
+ }
+}
+
/* Initialization of the front end environment, before command line
options are parsed. Signal handlers, internationalization etc.
ARGV0 is main's argv[0]. */
gcc_init_libintl ();
+ /* Initialize the diagnostics reporting machinery, so option parsing
+ can give warnings and errors. */
+ diagnostic_initialize (global_dc);
+ /* Set a default printer. Language specific initializations will
+ override it later. */
+ pp_format_decoder (global_dc->printer) = &default_tree_printer;
+
/* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */
#ifdef SIGSEGV
signal (SIGSEGV, crash_signal);
/* Other host-specific signal setup. */
(*host_hooks.extra_signals)();
- /* Initialize the diagnostics reporting machinery, so option parsing
- can give warnings and errors. */
- diagnostic_initialize (global_dc);
-
/* Initialize the garbage-collector, string pools and tree type hash
table. */
init_ggc ();
if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function)
flag_unit_at_a_time = 0;
+ if (flag_value_profile_transformations)
+ flag_profile_values = 1;
+
/* Warn about options that are not supported on this machine. */
#ifndef INSN_SCHEDULING
if (flag_schedule_insns || flag_schedule_insns_after_reload)
profile_flag = 0;
}
+ /* A lot of code assumes write_symbols == NO_DEBUG if the debugging
+ level is 0. */
+ if (debug_info_level == DINFO_LEVEL_NONE)
+ write_symbols = NO_DEBUG;
+
/* Now we know write_symbols, set up the debug hooks based on it.
By default we do nothing for debug output. */
+ if (write_symbols == NO_DEBUG)
+ debug_hooks = &do_nothing_debug_hooks;
#if defined(DBX_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG)
+ else if (write_symbols == DBX_DEBUG)
debug_hooks = &dbx_debug_hooks;
#endif
#if defined(XCOFF_DEBUGGING_INFO)
- if (write_symbols == XCOFF_DEBUG)
+ else if (write_symbols == XCOFF_DEBUG)
debug_hooks = &xcoff_debug_hooks;
#endif
#ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
+ else if (write_symbols == SDB_DEBUG)
debug_hooks = &sdb_debug_hooks;
#endif
-#ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- debug_hooks = &dwarf_debug_hooks;
-#endif
#ifdef DWARF2_DEBUGGING_INFO
- if (write_symbols == DWARF2_DEBUG)
+ else if (write_symbols == DWARF2_DEBUG)
debug_hooks = &dwarf2_debug_hooks;
#endif
#ifdef VMS_DEBUGGING_INFO
- if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
+ else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
debug_hooks = &vmsdbg_debug_hooks;
#endif
+ else
+ error ("target system does not support the \"%s\" debug format",
+ debug_type_names[write_symbols]);
/* If auxiliary info generation is desired, open the output file.
This goes in the same directory as the source file--unlike
static void
backend_init (void)
{
- /* init_emit_once uses reg_raw_mode and therefore must be called
- after init_regs which initialized reg_raw_mode. */
- init_regs ();
+ init_adjust_machine_modes ();
+
init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
|| debug_info_level == DINFO_LEVEL_VERBOSE
#ifdef VMS_DEBUGGING_INFO
#endif
|| flag_test_coverage
|| warn_notreached);
+
+ init_regs ();
init_fake_stack_mems ();
init_alias_once ();
init_loop ();
ggc_print_statistics ();
stringpool_statistics ();
dump_tree_statistics ();
+ dump_rtx_statistics ();
}
/* Free up memory for the benefit of leak detectors. */
}
/* Entry point of cc1, cc1plus, jc1, f771, etc.
- Decode command args, then call compile_file.
Exit code is FATAL_EXIT_CODE if can't open files or if there were
any errors, or SUCCESS_EXIT_CODE if compilation succeeded.
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