perf parse-events: Avoid enum casts

Add term_type to union of values returned by the lexer to avoid casts
to and from an integer.
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230901233949.2930562-4-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/parse-events.l

@@ -120,7 +120,7 @@ static int term(yyscan_t scanner, enum parse_events__term_type type)
 {
 	YYSTYPE *yylval = parse_events_get_lval(scanner);
 
-	yylval->num = type;
+	yylval->term_type = type;
 	return PE_TERM;
 }
 

tools/perf/util/parse-events.y

@@ -70,7 +70,7 @@ static void free_list_evsel(struct list_head* list_evsel)
 %type <num> PE_VALUE_SYM_HW
 %type <num> PE_VALUE_SYM_SW
 %type <num> PE_VALUE_SYM_TOOL
-%type <num> PE_TERM
+%type <term_type> PE_TERM
 %type <num> value_sym
 %type <str> PE_RAW
 %type <str> PE_NAME
@@ -111,6 +111,7 @@ static void free_list_evsel(struct list_head* list_evsel)
 {
 	char *str;
 	u64 num;
+	enum parse_events__term_type term_type;
 	struct list_head *list_evsel;
 	struct list_head *list_terms;
 	struct parse_events_term *term;
@@ -778,8 +779,7 @@ PE_TERM_HW
 PE_TERM '=' name_or_legacy
 {
 	struct parse_events_term *term;
-	int err = parse_events_term__str(&term, (enum parse_events__term_type)$1,
-					/*config=*/NULL, $3, &@1, &@3);
+	int err = parse_events_term__str(&term, $1, /*config=*/NULL, $3, &@1, &@3);
 
 	if (err) {
 		free($3);
@@ -791,8 +791,7 @@ PE_TERM '=' name_or_legacy
 PE_TERM '=' PE_TERM_HW
 {
 	struct parse_events_term *term;
-	int err = parse_events_term__str(&term, (enum parse_events__term_type)$1,
-					 /*config=*/NULL, $3.str, &@1, &@3);
+	int err = parse_events_term__str(&term, $1, /*config=*/NULL, $3.str, &@1, &@3);
 
 	if (err) {
 		free($3.str);
@@ -804,10 +803,7 @@ PE_TERM '=' PE_TERM_HW
 PE_TERM '=' PE_TERM
 {
 	struct parse_events_term *term;
-	int err = parse_events_term__term(&term,
-					  (enum parse_events__term_type)$1,
-					  (enum parse_events__term_type)$3,
-					  &@1, &@3);
+	int err = parse_events_term__term(&term, $1, $3, &@1, &@3);
 
 	if (err)
 		PE_ABORT(err);
@@ -818,8 +814,9 @@ PE_TERM '=' PE_TERM
 PE_TERM '=' PE_VALUE
 {
 	struct parse_events_term *term;
-	int err = parse_events_term__num(&term, (enum parse_events__term_type)$1,
-					 /*config=*/NULL, $3, /*novalue=*/false, &@1, &@3);
+	int err = parse_events_term__num(&term, $1,
+					 /*config=*/NULL, $3, /*novalue=*/false,
+					 &@1, &@3);
 
 	if (err)
 		PE_ABORT(err);
@@ -830,9 +827,9 @@ PE_TERM '=' PE_VALUE
 PE_TERM
 {
 	struct parse_events_term *term;
-	int err = parse_events_term__num(&term, (enum parse_events__term_type)$1,
-					/*config=*/NULL, /*num=*/1, /*novalue=*/true,
-					&@1, /*loc_val=*/NULL);
+	int err = parse_events_term__num(&term, $1,
+					 /*config=*/NULL, /*num=*/1, /*novalue=*/true,
+					 &@1, /*loc_val=*/NULL);
 
 	if (err)
 		PE_ABORT(err);