diff options
Diffstat (limited to 'gcc/genautomata.c')
| -rw-r--r-- | gcc/genautomata.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/gcc/genautomata.c b/gcc/genautomata.c index d5a7460..0fddf27 100644 --- a/gcc/genautomata.c +++ b/gcc/genautomata.c @@ -6872,7 +6872,7 @@ process_state_longest_path_length (state) max_dfa_issue_rate = value; } -/* The following nacro value is name of the corresponding global +/* The following macro value is name of the corresponding global variable in the automaton based pipeline interface. */ #define MAX_DFA_ISSUE_RATE_VAR_NAME "max_dfa_issue_rate" @@ -7960,13 +7960,32 @@ output_tables () } /* The function outputs definition and value of PHR interface variable - `max_insn_queue_index' */ + `max_insn_queue_index'. Its value is not less than maximal queue + length needed for the insn scheduler. */ static void output_max_insn_queue_index_def () { - int i; + int i, max, latency; + decl_t decl; - for (i = 0; (1 << i) <= description->max_insn_reserv_cycles; i++) + max = description->max_insn_reserv_cycles; + for (i = 0; i < description->decls_num; i++) + { + decl = description->decls [i]; + if (decl->mode == dm_insn_reserv && decl != advance_cycle_insn_decl) + { + latency = DECL_INSN_RESERV (decl)->default_latency; + if (latency > max) + max = latency; + } + else if (decl->mode == dm_bypass) + { + latency = DECL_BYPASS (decl)->latency; + if (latency > max) + max = latency; + } + } + for (i = 0; (1 << i) <= max; i++) ; if (i < 0) abort (); |