tcg: improve tcg_reg_alloc_movi()

Now that the liveness analysis might mark some output temps as dead, call
temp_dead() if needed.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

tcg/tcg.c

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 567ec87..6586385 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1705,6 +1705,9 @@
     if (NEED_SYNC_ARG(0)) {
         temp_sync(s, args[0], s->reserved_regs);
     }
+    if (IS_DEAD_ARG(0)) {
+        temp_dead(s, args[0]);
+    }
 }
 
 static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,