target/hexagon: idef-parser fix leak of init_list

gen_inst_init_args() is called for instructions using a predicate as an
rvalue. Upon first call, the list of arguments which might need
initialization init_list is freed to indicate that they have been
processed. For instructions without an rvalue predicate,
gen_inst_init_args() isn't called and init_list will never be freed.

Free init_list from free_instruction() if it hasn't already been freed.
A comment in free_instruction is also updated.

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240523125901.27797-4-anjo@rev.ng>
Signed-off-by: Brian Cain <bcain@quicinc.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c
index 95f2b43076..c150c308be 100644
--- a/target/hexagon/idef-parser/parser-helpers.c
+++ b/target/hexagon/idef-parser/parser-helpers.c
@@ -2121,9 +2121,16 @@ void free_instruction(Context *c)
         g_string_free(g_array_index(c->inst.strings, GString*, i), TRUE);
     }
     g_array_free(c->inst.strings, TRUE);
+    /*
+     * Free list of arguments that might need initialization, if they haven't
+     * already been freed.
+     */
+    if (c->inst.init_list) {
+        g_array_free(c->inst.init_list, TRUE);
+    }
     /* Free INAME token value */
     g_string_free(c->inst.name, TRUE);
-    /* Free variables and registers */
+    /* Free declared TCGv variables */
     g_array_free(c->inst.allocated, TRUE);
     /* Initialize instruction-specific portion of the context */
     memset(&(c->inst), 0, sizeof(Inst));