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target/rx: Use cpu_psw_z as temp in flags computation 

Since PSW_Z = PSW_S, we can move that assignment to the end
and use PSW_Z as a temporary while computing PSW_O.
Use tcg_constant_i32 instead of tcg_const_i32.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-02-26 10:09:44 -10:00
parent 4b01ff2561
commit bb09b540c4
1 changed files with 13 additions and 15 deletions
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28
target/rx/translate.c
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@ -967,14 +967,13 @@ static bool trans_NEG_rr(DisasContext *ctx, arg_NEG_rr *a)
/* ret = arg1 + arg2 + psw_c */
static void rx_adc(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv z;
z = tcg_const_i32(0);
TCGv z = tcg_constant_i32(0);
tcg_gen_add2_i32(cpu_psw_s, cpu_psw_c, arg1, z, cpu_psw_c, z);
tcg_gen_add2_i32(cpu_psw_s, cpu_psw_c, cpu_psw_s, cpu_psw_c, arg2, z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_xor_i32(cpu_psw_o, cpu_psw_s, arg1);
tcg_gen_xor_i32(z, arg1, arg2);
tcg_gen_andc_i32(cpu_psw_o, cpu_psw_o, z);
tcg_gen_xor_i32(cpu_psw_z, arg1, arg2);
tcg_gen_andc_i32(cpu_psw_o, cpu_psw_o, cpu_psw_z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_mov_i32(ret, cpu_psw_s);
}
@ -1006,13 +1005,12 @@ static bool trans_ADC_mr(DisasContext *ctx, arg_ADC_mr *a)
/* ret = arg1 + arg2 */
static void rx_add(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv z;
z = tcg_const_i32(0);
TCGv z = tcg_constant_i32(0);
tcg_gen_add2_i32(cpu_psw_s, cpu_psw_c, arg1, z, arg2, z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_xor_i32(cpu_psw_o, cpu_psw_s, arg1);
tcg_gen_xor_i32(z, arg1, arg2);
tcg_gen_andc_i32(cpu_psw_o, cpu_psw_o, z);
tcg_gen_xor_i32(cpu_psw_z, arg1, arg2);
tcg_gen_andc_i32(cpu_psw_o, cpu_psw_o, cpu_psw_z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_mov_i32(ret, cpu_psw_s);
}
@ -1042,23 +1040,23 @@ static bool trans_ADD_rrr(DisasContext *ctx, arg_ADD_rrr *a)
/* ret = arg1 - arg2 */
static void rx_sub(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv temp;
tcg_gen_sub_i32(cpu_psw_s, arg1, arg2);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_setcond_i32(TCG_COND_GEU, cpu_psw_c, arg1, arg2);
tcg_gen_xor_i32(cpu_psw_o, cpu_psw_s, arg1);
temp = tcg_temp_new_i32();
tcg_gen_xor_i32(temp, arg1, arg2);
tcg_gen_and_i32(cpu_psw_o, cpu_psw_o, temp);
tcg_gen_xor_i32(cpu_psw_z, arg1, arg2);
tcg_gen_and_i32(cpu_psw_o, cpu_psw_o, cpu_psw_z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
/* CMP not required return */
if (ret) {
tcg_gen_mov_i32(ret, cpu_psw_s);
}
}
static void rx_cmp(TCGv dummy, TCGv arg1, TCGv arg2)
{
rx_sub(NULL, arg1, arg2);
}
/* ret = arg1 - arg2 - !psw_c */
/* -> ret = arg1 + ~arg2 + psw_c */
static void rx_sbb(TCGv ret, TCGv arg1, TCGv arg2)