diff options
Diffstat (limited to 'gcc/gensupport.c')
| -rw-r--r-- | gcc/gensupport.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/gensupport.c b/gcc/gensupport.c index 94d27ac..bbac33a 100644 --- a/gcc/gensupport.c +++ b/gcc/gensupport.c @@ -118,6 +118,7 @@ static void process_define_cond_exec (void); static void process_include (rtx, int); static char *save_string (const char *, int); static void init_predicate_table (void); +static void record_insn_name (int, const char *); void message_with_line (int lineno, const char *msg, ...) @@ -1104,6 +1105,10 @@ read_md_rtx (int *lineno, int *seqnr) sequence_num++; else if (insn_elision) goto discard; + + /* *seqnr is used here so the name table will match caller's + idea of insn numbering, whether or not elision is active. */ + record_insn_name (*seqnr, XSTR (desc, 0)); break; case DEFINE_SPLIT: @@ -1373,3 +1378,50 @@ init_predicate_table (void) add_predicate (pred); } } + +/* These functions allow linkage with print-rtl.c. Also, some generators + like to annotate their output with insn names. */ + +/* Holds an array of names indexed by insn_code_number. */ +static char **insn_name_ptr = 0; +static int insn_name_ptr_size = 0; + +const char * +get_insn_name (int code) +{ + if (code < insn_name_ptr_size) + return insn_name_ptr[code]; + else + return NULL; +} + +static void +record_insn_name (int code, const char *name) +{ + static const char *last_real_name = "insn"; + static int last_real_code = 0; + char *new; + + if (insn_name_ptr_size <= code) + { + int new_size; + new_size = (insn_name_ptr_size ? insn_name_ptr_size * 2 : 512); + insn_name_ptr = xrealloc (insn_name_ptr, sizeof(char *) * new_size); + memset (insn_name_ptr + insn_name_ptr_size, 0, + sizeof(char *) * (new_size - insn_name_ptr_size)); + insn_name_ptr_size = new_size; + } + + if (!name || name[0] == '\0') + { + new = xmalloc (strlen (last_real_name) + 10); + sprintf (new, "%s+%d", last_real_name, code - last_real_code); + } + else + { + last_real_name = new = xstrdup (name); + last_real_code = code; + } + + insn_name_ptr[code] = new; +} |