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target/xtensa: drop gen_io_end call

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Since commit
ba3e792669 ("icount: clean up cpu_can_io at the entry to the block")
it has been unnecessary for target code to call gen_io_end() after an IO
instruction in icount mode; it is sufficient to call gen_io_start()
before it and to force the end of the TB.
Remaining call in xtensa target translator is for the opcodes that may
change IRQ state. All of them end current TB, so gen_io_end is not
needed. Drop gen_io_end call from the xtensa target translator.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Max Filippov 2020-06-21 22:26:50 -07:00
parent 62ed68e33d
commit 8a3a81478d
1 changed files with 0 additions and 3 deletions
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3
target/xtensa/translate.c
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@ -595,9 +595,6 @@ static int gen_postprocess(DisasContext *dc, int slot)
gen_io_start();
}
gen_helper_check_interrupts(cpu_env);
if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
gen_io_end();
}
}
#endif
if (op_flags & XTENSA_OP_SYNC_REGISTER_WINDOW) {