tcg: Reference count labels

Increment when adding branches, and decrement when removing them.

Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/tcg/tcg.h b/tcg/tcg.h
index 492d8dcf10..db2d91867f 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -244,7 +244,8 @@ typedef struct TCGRelocation {
 
 typedef struct TCGLabel {
     unsigned has_value : 1;
-    unsigned id : 31;
+    unsigned id : 15;
+    unsigned refs : 16;
     union {
         uintptr_t value;
         tcg_insn_unit *value_ptr;