From: Richard Henderson <richard.henderson@linaro.org>
Date: Mon, 31 Aug 2020 17:42:04 +0000 (-0700)
Subject: target/microblaze: Use tcg_gen_lookup_and_goto_ptr
X-Git-Tag: v5.2.0-rc0~128^2~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4059bd90eb29fb837636db278d6907f4df0f6158;p=thirdparty%2Fqemu.git

target/microblaze: Use tcg_gen_lookup_and_goto_ptr

Normal indirect jumps, or page-crossing direct jumps, can use
tcg_gen_lookup_and_goto_ptr to avoid returning to the main loop
simply to find an existing TB for the next pc.

Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index da84fdb20b9..d98572fab9e 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -147,7 +147,7 @@ static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
         tcg_gen_exit_tb(dc->base.tb, n);
     } else {
         tcg_gen_movi_i32(cpu_pc, dest);
-        tcg_gen_exit_tb(NULL, 0);
+        tcg_gen_lookup_and_goto_ptr();
     }
     dc->base.is_jmp = DISAS_NORETURN;
 }
@@ -1803,7 +1803,7 @@ static void mb_tr_tb_stop(DisasContextBase *dcb, CPUState *cs)
         if (unlikely(cs->singlestep_enabled)) {
             gen_raise_exception(dc, EXCP_DEBUG);
         } else {
-            tcg_gen_exit_tb(NULL, 0);
+            tcg_gen_lookup_and_goto_ptr();
         }
         return;