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accel/tcg: Use more accurate max_insns for tb_overflow

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Write back the number of insns that we attempt to translate,
so that if we longjmp out we have a more accurate limit for
the next attempt.  This results in fewer restarts when some
limit is consumed by few instructions.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-01-28 19:11:20 -10:00
parent 597f9b2d30
commit 9b1890ad90
1 changed files with 1 additions and 1 deletions
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accel/tcg/translator.c
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@ -78,7 +78,7 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
plugin_enabled = plugin_gen_tb_start(cpu, db, cflags & CF_MEMI_ONLY);
while (true) {
db->num_insns++;
*max_insns = ++db->num_insns;
ops->insn_start(db, cpu);
tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */