accel/tcg: Hoist CF_MEMI_ONLY check outside translation loop
The condition checked is loop invariant; check it only once. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> (cherry picked from commit 5d97e94638100fd3e5b8d76ab30e1066cd4b1823) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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@ -158,7 +158,13 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
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ops->tb_start(db, cpu);
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ops->tb_start(db, cpu);
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tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */
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tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */
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plugin_enabled = plugin_gen_tb_start(cpu, db, cflags & CF_MEMI_ONLY);
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if (cflags & CF_MEMI_ONLY) {
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/* We should only see CF_MEMI_ONLY for io_recompile. */
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assert(cflags & CF_LAST_IO);
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plugin_enabled = plugin_gen_tb_start(cpu, db, true);
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} else {
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plugin_enabled = plugin_gen_tb_start(cpu, db, false);
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}
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while (true) {
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while (true) {
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*max_insns = ++db->num_insns;
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*max_insns = ++db->num_insns;
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@ -176,12 +182,8 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
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if (db->num_insns == db->max_insns && (cflags & CF_LAST_IO)) {
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if (db->num_insns == db->max_insns && (cflags & CF_LAST_IO)) {
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/* Accept I/O on the last instruction. */
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/* Accept I/O on the last instruction. */
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gen_io_start();
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gen_io_start();
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ops->translate_insn(db, cpu);
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} else {
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/* we should only see CF_MEMI_ONLY for io_recompile */
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tcg_debug_assert(!(cflags & CF_MEMI_ONLY));
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ops->translate_insn(db, cpu);
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}
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}
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ops->translate_insn(db, cpu);
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/*
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/*
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* We can't instrument after instructions that change control
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* We can't instrument after instructions that change control
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