profile_probability Class Reference

#include <profile-count.h>

Public Member Functions
	profile_probability ()
	profile_probability (uint32_t val, profile_quality quality)
bool	nonzero_p () const
bool	initialized_p () const
bool	reliable_p () const
profile_probability	adjusted () const
int	to_reg_br_prob_base () const
int	to_reg_br_prob_note () const
bool	operator== (const profile_probability &other) const
profile_probability	operator+ (const profile_probability &other) const
profile_probability &	operator+= (const profile_probability &other)
profile_probability	operator- (const profile_probability &other) const
profile_probability &	operator-= (const profile_probability &other)
profile_probability	operator* (const profile_probability &other) const
profile_probability &	operator*= (const profile_probability &other)
profile_probability	operator/ (const profile_probability &other) const
profile_probability &	operator/= (const profile_probability &other)
profile_probability	split (const profile_probability &cprob)
gcov_type	apply (gcov_type val) const
profile_probability	invert () const
profile_probability	guessed () const
profile_probability	afdo () const
profile_probability	apply_scale (int64_t num, int64_t den) const
profile_probability	apply_scale (profile_probability num, profile_probability den) const
bool	probably_reliable_p () const
bool	verify () const
bool	operator< (const profile_probability &other) const
bool	operator> (const profile_probability &other) const
bool	operator<= (const profile_probability &other) const
bool	operator>= (const profile_probability &other) const
profile_probability	operator* (int64_t num) const
profile_probability	operator*= (int64_t num)
profile_probability	operator/ (int64_t den) const
profile_probability	operator/= (int64_t den)
profile_probability	pow (int) const
profile_probability	sqrt () const
uint32_t	value () const
enum profile_quality	quality () const
void	dump (FILE *f) const
void	dump (char *buffer) const
void	debug () const
bool	differs_from_p (profile_probability other) const
bool	differs_lot_from_p (profile_probability other) const
profile_probability	combine_with_count (profile_count count1, profile_probability other, profile_count count2) const
sreal	to_sreal () const
void	stream_out (struct output_block *)
void	stream_out (struct lto_output_stream *)

Static Public Member Functions
static profile_probability	never ()
static profile_probability	guessed_never ()
static profile_probability	very_unlikely ()
static profile_probability	unlikely ()
static profile_probability	even ()
static profile_probability	very_likely ()
static profile_probability	likely ()
static profile_probability	guessed_always ()
static profile_probability	always ()
static profile_probability	uninitialized ()
static profile_probability	from_reg_br_prob_base (int v)
static profile_probability	from_reg_br_prob_note (int v)
static profile_probability	probability_in_gcov_type (gcov_type val1, gcov_type val2)
static profile_probability	stream_in (class lto_input_block *)

Private Member Functions
void	set_quality (profile_quality quality)

Private Attributes
uint32_t	m_val: 29
unsigned	m_adjusted_quality: 3

Static Private Attributes
static const int	n_bits = 29
static const uint32_t	max_probability = (uint32_t) 1 << (n_bits - 2)
static const uint32_t	uninitialized_probability = ((uint32_t) 1 << (n_bits - 1)) - 1
static const int	min_quality = GUESSED

Friends
struct	profile_count

Detailed Description

Data type to hold probabilities.  It implements fixed point arithmetics
  with capping so probability is always in range [0,1] and scaling requiring
  values greater than 1 needs to be represented otherwise.

  In addition to actual value the quality of profile is tracked and propagated
  through all operations.  Special value UNINITIALIZED_PROFILE is used for probabilities
  that has not been determined yet (for example because of
  -fno-guess-branch-probability)

  Typically probabilities are derived from profile feedback (via
  probability_in_gcov_type), autoFDO or guessed statically and then propagated
  thorough the compilation.

  Named probabilities are available:
    - never           (0 probability)
    - guessed_never
    - very_unlikely   (1/2000 probability)
    - unlikely        (1/5 probability)
    - even            (1/2 probability)
    - likely          (4/5 probability)
    - very_likely     (1999/2000 probability)
    - guessed_always
    - always

  Named probabilities except for never/always are assumed to be statically
  guessed and thus not necessarily accurate.  The difference between never
  and guessed_never is that the first one should be used only in case that
  well behaving program will very likely not execute the "never" path.
  For example if the path is going to abort () call or it exception handling.

  Always and guessed_always probabilities are symmetric.

  For legacy code we support conversion to/from REG_BR_PROB_BASE based fixpoint
  integer arithmetics. Once the code is converted to branch probabilities,
  these conversions will probably go away because they are lossy.

Constructor & Destructor Documentation

profile_probability() [1/2]

profile_probability::profile_probability ( )

inline

References GUESSED, m_val, set_quality(), and uninitialized_probability.

Referenced by adjusted(), afdo(), always(), apply_scale(), apply_scale(), combine_with_count(), differs_from_p(), differs_lot_from_p(), even(), from_reg_br_prob_base(), from_reg_br_prob_note(), guessed(), guessed_always(), guessed_never(), invert(), likely(), never(), operator*(), operator*(), operator*=(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/(), operator/=(), operator/=(), operator<(), operator<=(), operator==(), operator>(), operator>=(), pow(), probability_in_gcov_type(), split(), sqrt(), stream_in(), uninitialized(), unlikely(), very_likely(), and very_unlikely().

profile_probability() [2/2]

profile_probability::profile_probability ( uint32_t val, profile_quality quality )

inline

References m_val, quality(), and set_quality().

Member Function Documentation

adjusted()

profile_probability profile_probability::adjusted ( ) const

inline

References ADJUSTED, initialized_p(), profile_probability(), and set_quality().

Referenced by ipa_profile().

afdo()

profile_probability profile_probability::afdo ( ) const

inline

References AFDO, profile_probability(), and set_quality().

Referenced by autofdo::afdo_calculate_branch_prob().

always()

profile_probability profile_probability::always ( )

inlinestatic

References m_val, max_probability, PRECISE, profile_probability(), and set_quality().

Referenced by autofdo::afdo_calculate_branch_prob(), profile_count::apply_probability(), rt_bb_visited::check(), check_bb_profile(), cleanup_empty_eh_move_lp(), combine_predictions_for_bb(), combine_predictions_for_insn(), compute_outgoing_frequencies(), copy_cfg_body(), determine_unlikely_bbs(), do_split_loop_on_cond(), duplicate_loop_body_to_header_edge(), back_jt_path_registry::duplicate_thread_path(), eliminate_tail_call(), tree_switch_conversion::bit_test_cluster::emit(), tree_switch_conversion::jump_table_cluster::emit(), estimate_bb_frequencies(), execute_sm_if_changed(), expand_omp_taskloop_for_inner(), expand_omp_taskloop_for_outer(), expand_thunk(), expand_transaction(), fold_loop_internal_call(), force_edge_cold(), force_nonfallthru_and_redirect(), tree_switch_conversion::switch_conversion::gen_inbound_check(), get_cond_branch_to_split_loop(), gimple_divmod_fixed_value(), gimple_ic(), gimple_mod_pow2(), gimple_mod_subtract(), gimple_stringop_fixed_value(), hoist_guard(), init_lowered_empty_function(), insert_check_and_trap(), rt_bb_visited::insert_exit_check_on_edge(), invert(), likely(), lower_resx(), make_single_succ_edge(), pow(), profile_count::probability_in(), purge_dead_edges(), remove_ctrl_stmt_and_useless_edges(), remove_dead_stmt(), remove_exits_and_undefined_stmts(), replace_phi_edge_with_variable(), scale_loop_profile(), scale_profile_for_vect_loop(), select_best_block(), set_edge_probability_and_rescale_others(), set_even_probabilities(), shrink_wrap_one_built_in_call_with_conds(), split(), split_edge(), split_loop(), sqrt(), tree_transform_and_unroll_loop(), try_redirect_by_replacing_jump(), try_unroll_loop_completely(), unroll_loop_runtime_iterations(), update_profile(), update_profile_after_ch(), update_profile_after_ifcombine(), vect_do_peeling(), vect_loop_versioning(), version_loop_for_if_conversion(), and very_likely().

apply()

gcov_type profile_probability::apply ( gcov_type val ) const

inline

References m_val, max_probability, RDIV, and uninitialized().

apply_scale() [1/2]

profile_probability profile_probability::apply_scale ( int64_t num, int64_t den ) const

inline

References ADJUSTED, initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), safe_scale_64bit(), set_quality(), and uninitialized().

Referenced by do_compare_rtx_and_jump(), duplicate_loop_body_to_header_edge(), tree_switch_conversion::jump_table_cluster::emit(), execute_sm_if_changed(), expand_omp_for_generic(), expand_omp_for_static_nochunk(), expand_omp_simd(), extract_omp_for_update_vars(), operator*(), operator*=(), operator/(), operator/=(), tree_transform_and_unroll_loop(), update_bb_profile_for_threading(), vect_do_peeling(), and version_loop_by_alias_check().

apply_scale() [2/2]

profile_probability profile_probability::apply_scale ( profile_probability num, profile_probability den ) const

inline

References ADJUSTED, gcc_checking_assert, initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), safe_scale_64bit(), set_quality(), and uninitialized().

combine_with_count()

profile_probability profile_probability::combine_with_count	(	profile_count	count1,
		profile_probability	other,
		profile_count	count2 ) const

COUNT1 times event happens with *THIS probability, COUNT2 times OTHER
happens with COUNT2 probability.  Return probability that either *THIS or
OTHER happens.   

References even(), profile_count::nonzero_p(), profile_count::probability_in(), profile_count, profile_probability(), and profile_count::zero().

debug()

void profile_probability::debug

(

)

const

Dump THIS to stderr.   

References dump().

differs_from_p()

bool profile_probability::differs_from_p

(

profile_probability

other

)

const

Return true if THIS differs from OTHER; tolerate small differences.   

References initialized_p(), m_val, max_probability, and profile_probability().

Referenced by check_bb_profile().

differs_lot_from_p()

bool profile_probability::differs_lot_from_p

(

profile_probability

other

)

const

Return true if THIS differs significantly from OTHER.   

References initialized_p(), m_val, max_probability, and profile_probability().

dump() [1/2]

void profile_probability::dump

(

char *

buffer

)

const

Output THIS to BUFFER.   

References ADJUSTED, AFDO, GUESSED, initialized_p(), m_val, max_probability, and quality().

dump() [2/2]

void profile_probability::dump

(

FILE *

f

)

const

Dump THIS to F.   

References dump().

Referenced by check_bb_profile(), debug(), dump(), tree_switch_conversion::switch_decision_tree::dump_case_nodes(), outgoing_edges_match(), scale_loop_profile(), and update_bb_profile_for_threading().

even()

profile_probability profile_probability::even ( )

inlinestatic

References guessed_always(), and profile_probability().

Referenced by branch_fixup(), combine_with_count(), create_empty_loop_on_edge(), do_compare_rtx_and_jump(), do_jump_1(), tree_switch_conversion::switch_conversion::exp_index_transform(), expand_addsub_overflow(), expand_complex_div_wide(), expand_mul_overflow(), expand_oacc_for(), expand_transaction(), fixup_reorder_chain(), gimple_lower_bitint(), gimple_mod_subtract_transform(), cgraph_edge::redirect_call_stmt_to_callee(), try_store_by_multiple_pieces(), ubsan_expand_ptr_ifn(), update_profile_after_ifcombine(), and value_replacement().

from_reg_br_prob_base()

profile_probability profile_probability::from_reg_br_prob_base ( int v )

inlinestatic

References gcc_checking_assert, GUESSED, m_val, max_probability, profile_probability(), RDIV, REG_BR_PROB_BASE, and set_quality().

Referenced by combine_predictions_for_bb(), combine_predictions_for_insn(), ipa_profile(), and set_even_probabilities().

from_reg_br_prob_note()

profile_probability profile_probability::from_reg_br_prob_note ( int v )

inlinestatic

References m_adjusted_quality, m_val, and profile_probability().

Referenced by br_prob_note_reliable_p(), combine_predictions_for_insn(), compute_outgoing_frequencies(), cond_exec_process_if_block(), dead_or_predicable(), fixup_reorder_chain(), force_nonfallthru_and_redirect(), invert_br_probabilities(), mostly_true_jump(), purge_dead_edges(), to_reg_br_prob_note(), and try_split().

guessed()

profile_probability profile_probability::guessed ( ) const

inline

References GUESSED, profile_probability(), and set_quality().

Referenced by expand_oacc_for(), expand_omp_for_init_counts(), expand_omp_for_init_vars(), set_edge_probability_and_rescale_others(), simd_clone_adjust(), and update_bb_profile_for_threading().

guessed_always()

profile_probability profile_probability::guessed_always ( )

inlinestatic

References GUESSED, m_val, max_probability, profile_probability(), and set_quality().

Referenced by asan_clear_shadow(), compute_branch_probabilities(), do_compare_rtx_and_jump(), emit_block_cmp_via_loop(), emit_block_move_via_loop(), emit_block_move_via_oriented_loop(), even(), execute_sm_if_changed(), expand_omp_atomic_pipeline(), expand_omp_for_generic(), expand_omp_for_ordered_loops(), expand_omp_for_static_nochunk(), expand_omp_ordered_sink(), expand_omp_simd(), expand_thunk(), extract_omp_for_update_vars(), tree_transform_and_unroll_loop(), unlikely(), vect_do_peeling(), version_loop_by_alias_check(), and very_unlikely().

guessed_never()

profile_probability profile_probability::guessed_never ( )

inlinestatic

References GUESSED, m_val, profile_probability(), and set_quality().

Referenced by add_test(), better_edge_p(), create_parallel_loop(), expand_compare_and_swap_loop(), expand_omp_atomic_pipeline(), gimple_flow_call_edges_add(), oacc_entry_exit_single_gang(), rtl_flow_call_edges_add(), simd_clone_adjust(), and split_bb_make_tm_edge().

initialized_p()

bool profile_probability::initialized_p ( ) const

inline

References m_val, and uninitialized_probability.

Referenced by adjusted(), profile_count::apply_probability(), apply_scale(), apply_scale(), tree_switch_conversion::switch_decision_tree::balance_case_nodes(), better_edge_p(), cheap_bb_rtx_cost_p(), compare_and_jump_seq(), cond_exec_process_insns(), differs_from_p(), differs_lot_from_p(), do_jump_1(), dump(), dump_probability(), tree_switch_conversion::bit_test_cluster::emit(), emit_cmp_and_jump_insn_1(), execute_sm_if_changed(), find_traces_1_round(), nonzero_p(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), operator<(), operator<=(), operator>(), operator>=(), pow(), probably_reliable_p(), cgraph_edge::redirect_call_stmt_to_callee(), sanitize_hot_paths(), split_loop(), sqrt(), profile_count::to_frequency(), to_reg_br_prob_base(), to_reg_br_prob_note(), to_sreal(), try_split(), update_profile(), and vect_do_peeling().

invert()

profile_probability profile_probability::invert ( ) const

inline

References always(), and profile_probability().

Referenced by add_test(), combine_predictions_for_insn(), cond_exec_process_if_block(), create_cond_insert_point(), dead_or_predicable(), do_compare_rtx_and_jump(), do_jump(), do_jump_1(), do_jump_by_parts_greater_rtx(), tree_switch_conversion::switch_decision_tree::do_jump_if_equal(), tree_switch_conversion::jump_table_cluster::emit(), tree_switch_conversion::switch_decision_tree::emit_cmp_and_jump_insns(), execute_sm_if_changed(), expand_omp_for_init_counts(), expand_omp_for_init_vars(), expand_omp_ordered_sink(), expand_omp_simd(), find_if_case_1(), find_if_case_2(), gimple_divmod_fixed_value(), gimple_ic(), gimple_mod_pow2(), gimple_mod_subtract(), gimple_stringop_fixed_value(), invert_br_probabilities(), jumpifnot(), jumpifnot_1(), outgoing_edges_match(), set_edge_probability_and_rescale_others(), set_even_probabilities(), slpeel_add_loop_guard(), split(), split_loop(), tree_transform_and_unroll_loop(), tree_unswitch_loop(), unroll_loop_runtime_iterations(), update_bb_profile_for_threading(), vect_do_peeling(), vect_loop_versioning(), and version_loop_by_alias_check().

likely()

profile_probability profile_probability::likely ( )

inlinestatic

References always(), profile_probability(), and unlikely().

Referenced by tree_switch_conversion::jump_table_cluster::emit(), expand_oacc_for(), expand_omp_for_init_counts(), expand_omp_for_init_vars(), expand_transaction(), gen_parallel_loop(), optimize_mask_stores(), simd_clone_adjust(), try_store_by_multiple_pieces(), vect_loop_versioning(), worker_single_copy(), and worker_single_simple().

never()

profile_probability profile_probability::never ( )

inlinestatic

References m_val, PRECISE, profile_probability(), and set_quality().

Referenced by autofdo::afdo_calculate_branch_prob(), profile_count::apply_probability(), apply_scale(), apply_scale(), tree_switch_conversion::switch_decision_tree::balance_case_nodes(), rt_bb_visited::check(), check_bb_profile(), combine_predictions_for_bb(), compute_branch_probabilities(), connect_infinite_loops_to_exit(), copy_edges_for_bb(), determine_unlikely_bbs(), tree_switch_conversion::bit_test_cluster::emit(), tree_switch_conversion::jump_table_cluster::emit(), emit_case_dispatch_table(), tree_switch_conversion::switch_decision_tree::emit_case_nodes(), expand_gimple_tailcall(), fold_loop_internal_call(), force_edge_cold(), get_outgoing_edge_probs(), gimple_divmod_fixed_value_transform(), gimple_mod_pow2_value_transform(), gimple_mod_subtract_transform(), gimple_stringops_transform(), tree_switch_conversion::group_cluster::group_cluster(), gsi_insert_finally_seq_after_call(), hoist_guard(), insert_check_and_trap(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), profile_count::probability_in(), sanitize_hot_paths(), set_edge_probability_and_rescale_others(), set_even_probabilities(), sqrt(), tree_transform_and_unroll_loop(), unlikely_executed_edge_p(), unloop_loops(), update_profile_after_ch(), and update_profile_after_ifcombine().

nonzero_p()

bool profile_probability::nonzero_p ( ) const

inline

References initialized_p(), and m_val.

Referenced by pow().

operator*() [1/2]

profile_probability profile_probability::operator* ( const profile_probability & other ) const

inline

References initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), RDIV, set_quality(), and uninitialized().

operator*() [2/2]

profile_probability profile_probability::operator* ( int64_t num ) const

inline

References apply_scale(), and profile_probability().

operator*=() [1/2]

profile_probability & profile_probability::operator*= ( const profile_probability & other )

inline

References ADJUSTED, initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), RDIV, set_quality(), and uninitialized().

operator*=() [2/2]

profile_probability profile_probability::operator*= ( int64_t num )

inline

References apply_scale(), and profile_probability().

operator+()

profile_probability profile_probability::operator+ ( const profile_probability & other ) const

inline

References initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), set_quality(), and uninitialized().

operator+=()

profile_probability & profile_probability::operator+= ( const profile_probability & other )

inline

References initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), set_quality(), and uninitialized().

operator-()

profile_probability profile_probability::operator- ( const profile_probability & other ) const

inline

References initialized_p(), m_val, MIN, never(), profile_probability(), quality(), set_quality(), and uninitialized().

operator-=()

profile_probability & profile_probability::operator-= ( const profile_probability & other )

inline

References initialized_p(), m_val, MIN, never(), profile_probability(), quality(), set_quality(), and uninitialized().

operator/() [1/2]

profile_probability profile_probability::operator/ ( const profile_probability & other ) const

inline

References ADJUSTED, gcc_checking_assert, GUESSED, initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), RDIV, set_quality(), and uninitialized().

operator/() [2/2]

profile_probability profile_probability::operator/ ( int64_t den ) const

inline

References apply_scale(), and profile_probability().

operator/=() [1/2]

profile_probability & profile_probability::operator/= ( const profile_probability & other )

inline

References ADJUSTED, gcc_checking_assert, GUESSED, initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), RDIV, set_quality(), and uninitialized().

operator/=() [2/2]

profile_probability profile_probability::operator/= ( int64_t den )

inline

References apply_scale(), and profile_probability().

operator<()

bool profile_probability::operator< ( const profile_probability & other ) const

inline

References initialized_p(), m_val, and profile_probability().

operator<=()

bool profile_probability::operator<= ( const profile_probability & other ) const

inline

References initialized_p(), m_val, and profile_probability().

operator==()

bool profile_probability::operator== ( const profile_probability & other ) const

inline

References m_val, profile_probability(), and quality().

operator>()

bool profile_probability::operator> ( const profile_probability & other ) const

inline

References initialized_p(), m_val, and profile_probability().

operator>=()

bool profile_probability::operator>= ( const profile_probability & other ) const

inline

References initialized_p(), m_val, and profile_probability().

pow()

profile_probability profile_probability::pow

(

int

n

)

const

Compute n-th power of THIS.   

References always(), initialized_p(), nonzero_p(), and profile_probability().

probability_in_gcov_type()

profile_probability profile_probability::probability_in_gcov_type ( gcov_type val1, gcov_type val2 )

inlinestatic

References gcc_checking_assert, m_val, max_probability, PRECISE, profile_probability(), safe_scale_64bit(), and set_quality().

Referenced by adjust_cfg_counts(), compute_branch_probabilities(), gimple_divmod_fixed_value_transform(), gimple_mod_pow2_value_transform(), gimple_mod_subtract_transform(), and gimple_stringops_transform().

probably_reliable_p()

bool profile_probability::probably_reliable_p ( ) const

inline

References ADJUSTED, initialized_p(), m_val, max_probability, and quality().

Referenced by br_prob_note_reliable_p().

quality()

enum profile_quality profile_probability::quality ( ) const

inline

References m_adjusted_quality, min_quality, and UNINITIALIZED_PROFILE.

Referenced by profile_count::apply_probability(), apply_scale(), apply_scale(), dump(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), operator==(), probably_reliable_p(), profile_probability(), reliable_p(), set_quality(), sqrt(), and verify().

reliable_p()

bool profile_probability::reliable_p ( ) const

inline

References ADJUSTED, and quality().

Referenced by get_cond_branch_to_split_loop().

set_quality()

void profile_probability::set_quality ( profile_quality quality )

inlineprivate

References gcc_checking_assert, m_adjusted_quality, min_quality, PRECISE, quality(), and UNINITIALIZED_PROFILE.

Referenced by adjusted(), afdo(), always(), apply_scale(), apply_scale(), from_reg_br_prob_base(), guessed(), guessed_always(), guessed_never(), never(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), profile_count::probability_in(), probability_in_gcov_type(), profile_probability(), profile_probability(), and sqrt().

split()

profile_probability profile_probability::split ( const profile_probability & cprob )

inline

References always(), invert(), and profile_probability().

Referenced by do_compare_rtx_and_jump(), and do_jump_1().

sqrt()

profile_probability profile_probability::sqrt

(

)

const

Compute square root.   

References ADJUSTED, always(), initialized_p(), m_val, max_probability, MIN, never(), profile_probability(), quality(), RDIV, and set_quality().

Referenced by vect_loop_versioning().

stream_in()

profile_probability profile_probability::stream_in ( class lto_input_block * ib )

static

Stream THIS from IB.   

References m_adjusted_quality, m_val, profile_probability(), and streamer_read_uhwi().

Referenced by input_cfg().

stream_out() [1/2]

void profile_probability::stream_out

(

struct lto_output_stream *

ob

)

Stream THIS to OB.   

References m_adjusted_quality, m_val, and streamer_write_uhwi_stream().

stream_out() [2/2]

void profile_probability::stream_out

(

struct output_block *

ob

)

Stream THIS to OB.   

References m_adjusted_quality, m_val, and streamer_write_uhwi().

to_reg_br_prob_base()

int profile_probability::to_reg_br_prob_base ( ) const

inline

References gcc_checking_assert, initialized_p(), m_val, max_probability, RDIV, and REG_BR_PROB_BASE.

Referenced by cheap_bb_rtx_cost_p(), dump_probability(), find_traces_1_round(), mostly_true_jump(), and profile_count::to_frequency().

to_reg_br_prob_note()

int profile_probability::to_reg_br_prob_note ( ) const

inline

References from_reg_br_prob_note(), gcc_checking_assert, initialized_p(), m_adjusted_quality, and m_val.

Referenced by add_reg_br_prob_note(), cond_exec_process_insns(), and invert_br_probabilities().

to_sreal()

sreal profile_probability::to_sreal

(

)

const

Return probability as sreal in range [0, 1].   

References gcc_checking_assert, initialized_p(), m_val, and n_bits.

Referenced by split_loop().

uninitialized()

profile_probability profile_probability::uninitialized ( )

inlinestatic

References GUESSED, profile_probability(), and uninitialized_probability.

Referenced by apply(), apply_scale(), apply_scale(), compare_and_jump_seq(), cond_exec_process_if_block(), dead_or_predicable(), do_cmp_and_jump(), do_jump(), do_jump_1(), emit_store_flag_force(), execute_sm_if_changed(), expand_abs(), expand_doubleword_shift(), expand_expr_real_1(), expand_expr_real_2(), expand_sjlj_dispatch_table(), find_traces_1_round(), compare_by_pieces_d::finish_mode(), compare_by_pieces_d::generate(), init_emit_regs(), if_chain::is_beneficial(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), profile_count::probability_in(), rtl_lv_add_condition_to_bb(), sanitize_hot_paths(), store_constructor(), store_expr(), try_split(), and unchecked_make_edge().

unlikely()

profile_probability profile_probability::unlikely ( )

inlinestatic

References guessed_always(), profile_probability(), and r.

Referenced by expand_mul_overflow(), expand_oacc_for(), expand_omp_for_init_counts(), expand_omp_for_init_vars(), expand_transaction(), gen_parallel_loop(), gimple_gen_ic_func_profiler(), gimple_gen_time_profiler(), likely(), simd_clone_adjust(), sjlj_emit_function_enter(), and worker_single_copy().

value()

uint32_t profile_probability::value ( ) const

inline

References m_val.

verify()

bool profile_probability::verify ( ) const

inline

References gcc_checking_assert, GUESSED, m_val, max_probability, quality(), uninitialized_probability, and UNINITIALIZED_PROFILE.

very_likely()

profile_probability profile_probability::very_likely ( )

inlinestatic

References always(), profile_probability(), and very_unlikely().

Referenced by asan_emit_stack_protection(), connect_loops(), create_cond_insert_point(), emit_likely_jump_insn(), expand_addsub_overflow(), expand_arith_overflow_result_store(), expand_builtin_strub_leave(), expand_builtin_strub_update(), expand_mul_overflow(), expand_neg_overflow(), expand_omp_for_init_vars(), expand_omp_for_static_chunk(), expand_omp_for_static_nochunk(), expand_transaction(), expand_vector_ubsan_overflow(), gimple_gen_ic_func_profiler(), split_loop(), ubsan_expand_null_ifn(), and ubsan_expand_ptr_ifn().

very_unlikely()

profile_probability profile_probability::very_unlikely ( )

inlinestatic

References guessed_always(), profile_probability(), and r.

Referenced by asan_emit_stack_protection(), create_cond_insert_point(), emit_unlikely_jump_insn(), expand_addsub_overflow(), expand_complex_multiplication(), expand_mul_overflow(), expand_neg_overflow(), expand_omp_for_init_counts(), expand_omp_for_init_vars(), expand_omp_for_static_chunk(), expand_omp_for_static_nochunk(), expand_ubsan_result_store(), force_edge_cold(), set_even_probabilities(), shrink_wrap_one_built_in_call_with_conds(), single_likely_exit(), ubsan_expand_null_ifn(), ubsan_expand_ptr_ifn(), and very_likely().

Friends And Related Symbol Documentation

profile_count

friend struct profile_count

friend

References profile_count.

Referenced by combine_with_count(), and profile_count.

Field Documentation

m_adjusted_quality

unsigned profile_probability::m_adjusted_quality

private

Referenced by from_reg_br_prob_note(), quality(), set_quality(), stream_in(), stream_out(), stream_out(), and to_reg_br_prob_note().

m_val

uint32_t profile_probability::m_val

private

Referenced by always(), apply(), profile_count::apply_probability(), apply_scale(), apply_scale(), differs_from_p(), differs_lot_from_p(), dump(), from_reg_br_prob_base(), from_reg_br_prob_note(), guessed_always(), guessed_never(), initialized_p(), never(), nonzero_p(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), operator<(), operator<=(), operator==(), operator>(), operator>=(), profile_count::probability_in(), probability_in_gcov_type(), probably_reliable_p(), profile_probability(), profile_probability(), sqrt(), stream_in(), stream_out(), stream_out(), to_reg_br_prob_base(), to_reg_br_prob_note(), to_sreal(), value(), and verify().

max_probability

const uint32_t profile_probability::max_probability = (uint32_t) 1 << (n_bits - 2)

staticprivate

Referenced by always(), apply(), profile_count::apply_probability(), apply_scale(), apply_scale(), differs_from_p(), differs_lot_from_p(), dump(), from_reg_br_prob_base(), guessed_always(), operator*(), operator*=(), operator+(), operator+=(), operator/(), operator/=(), profile_count::probability_in(), probability_in_gcov_type(), probably_reliable_p(), sqrt(), to_reg_br_prob_base(), and verify().

min_quality

const int profile_probability::min_quality = GUESSED

staticprivate

Referenced by quality(), and set_quality().

n_bits

const int profile_probability::n_bits = 29

staticprivate

Referenced by to_sreal().

uninitialized_probability

const uint32_t profile_probability::uninitialized_probability = ((uint32_t) 1 << (n_bits - 1)) - 1

staticprivate

Referenced by initialized_p(), profile_probability(), uninitialized(), and verify().

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The documentation for this class was generated from the following files:

• profile-count.h
• profile-count.cc