accel/tcg: Avoid load of icount_decr if unused
With CF_NOIRQ and without !CF_USE_ICOUNT, the load isn't used. Avoid emitting it. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -49,12 +49,15 @@ bool translator_io_start(DisasContextBase *db)
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static TCGOp *gen_tb_start(uint32_t cflags)
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{
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TCGv_i32 count = tcg_temp_new_i32();
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TCGv_i32 count = NULL;
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TCGOp *icount_start_insn = NULL;
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tcg_gen_ld_i32(count, cpu_env,
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offsetof(ArchCPU, neg.icount_decr.u32) -
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offsetof(ArchCPU, env));
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if ((cflags & CF_USE_ICOUNT) || !(cflags & CF_NOIRQ)) {
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count = tcg_temp_new_i32();
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tcg_gen_ld_i32(count, cpu_env,
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offsetof(ArchCPU, neg.icount_decr.u32) -
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offsetof(ArchCPU, env));
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}
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if (cflags & CF_USE_ICOUNT) {
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/*
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