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target-xtensa: Use mul*2 for mul*hi 

Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2013-02-19 23:52:25 -08:00 committed by Blue Swirl
parent d1f8cd8391
commit c9cda20bc5
1 changed files with 6 additions and 14 deletions
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20
target-xtensa/translate.c
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@ -1652,24 +1652,16 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc)
case 11: /*MULSHi*/
HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL_HIGH);
{
TCGv_i64 r = tcg_temp_new_i64();
TCGv_i64 s = tcg_temp_new_i64();
TCGv_i64 t = tcg_temp_new_i64();
TCGv lo = tcg_temp_new();
if (OP2 == 10) {
tcg_gen_extu_i32_i64(s, cpu_R[RRR_S]);
tcg_gen_extu_i32_i64(t, cpu_R[RRR_T]);
tcg_gen_mulu2_i32(lo, cpu_R[RRR_R],
cpu_R[RRR_S], cpu_R[RRR_T]);
} else {
tcg_gen_ext_i32_i64(s, cpu_R[RRR_S]);
tcg_gen_ext_i32_i64(t, cpu_R[RRR_T]);
tcg_gen_muls2_i32(lo, cpu_R[RRR_R],
cpu_R[RRR_S], cpu_R[RRR_T]);
}
tcg_gen_mul_i64(r, s, t);
tcg_gen_shri_i64(r, r, 32);
tcg_gen_trunc_i64_i32(cpu_R[RRR_R], r);
tcg_temp_free_i64(r);
tcg_temp_free_i64(s);
tcg_temp_free_i64(t);
tcg_temp_free(lo);
}
break;