diff mbox series

[PULL,17/25] target/nios2: add DISAS_NORETURN case for nothing more to generate

Message ID 20200713141104.5139-18-peter.maydell@linaro.org
State Accepted
Commit 42928f2c9cd6185e3bda5e214f5c8f3603125ba9
Headers show
Series target-arm queue | expand

Commit Message

Peter Maydell July 13, 2020, 2:10 p.m. UTC 
From: Wentong Wu <wentong.wu@intel.com>


Add DISAS_NORETURN case for nothing more to generate because at runtime
execution will never return from some helper call. And at the same time
replace DISAS_UPDATE in t_gen_helper_raise_exception and gen_exception
with the newly added DISAS_NORETURN.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>

Message-id: 20200710233433.19729-1-wentong.wu@intel.com
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

---
 target/nios2/translate.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

-- 
2.20.1
diff mbox series

Patch

diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index 6c34cd31937..00b591cc298 100644
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -149,7 +149,7 @@  static void t_gen_helper_raise_exception(DisasContext *dc,
     tcg_gen_movi_tl(dc->cpu_R[R_PC], dc->pc);
     gen_helper_raise_exception(dc->cpu_env, tmp);
     tcg_temp_free_i32(tmp);
-    dc->is_jmp = DISAS_UPDATE;
+    dc->is_jmp = DISAS_NORETURN;
 }
 
 static bool use_goto_tb(DisasContext *dc, uint32_t dest)
@@ -802,7 +802,7 @@  static void gen_exception(DisasContext *dc, uint32_t excp)
     tcg_gen_movi_tl(cpu_R[R_PC], dc->pc);
     gen_helper_raise_exception(cpu_env, tmp);
     tcg_temp_free_i32(tmp);
-    dc->is_jmp = DISAS_UPDATE;
+    dc->is_jmp = DISAS_NORETURN;
 }
 
 /* generate intermediate code for basic block 'tb'.  */
@@ -877,6 +877,7 @@  void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
         tcg_gen_exit_tb(NULL, 0);
         break;
 
+    case DISAS_NORETURN:
     case DISAS_TB_JUMP:
         /* nothing more to generate */
         break;