tcg: Save insn data and use it in cpu_restore_state_from_tb

We can now restore state without retranslation.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

include/exec/exec-all.h

@@ -199,6 +199,7 @@ struct TranslationBlock {
 #define CF_USE_ICOUNT  0x20000
 
     void *tc_ptr;    /* pointer to the translated code */
+    uint8_t *tc_search;  /* pointer to search data */
     /* next matching tb for physical address. */
     struct TranslationBlock *phys_hash_next;
     /* original tb when cflags has CF_NOCACHE */