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| author | Richard Henderson <rth@twiddle.net> | 2013-02-19 23:52:26 -0800 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2013-02-23 17:25:31 +0000 |
| commit | d2123a079d983677ec8333940aa4bec803d98cde (patch) | |
| tree | 7859ee2dea223228d3b207c34b899484a37d108a /target-xtensa | |
| parent | c9cda20bc55e549d31e791bfa55eabe3642b73a7 (diff) | |
| download | qemu-d2123a079d983677ec8333940aa4bec803d98cde.zip qemu-d2123a079d983677ec8333940aa4bec803d98cde.tar.gz qemu-d2123a079d983677ec8333940aa4bec803d98cde.tar.bz2 | |
target-xtensa: Use add2/sub2 for mac
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-xtensa')
| -rw-r--r-- | target-xtensa/translate.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index b41d12c..11e06a3 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -2487,27 +2487,24 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) tcg_gen_sari_i32(cpu_SR[ACCHI], cpu_SR[ACCLO], 31); } } else { - TCGv_i32 res = tcg_temp_new_i32(); - TCGv_i64 res64 = tcg_temp_new_i64(); - TCGv_i64 tmp = tcg_temp_new_i64(); - - tcg_gen_mul_i32(res, m1, m2); - tcg_gen_ext_i32_i64(res64, res); - tcg_gen_concat_i32_i64(tmp, - cpu_SR[ACCLO], cpu_SR[ACCHI]); + TCGv_i32 lo = tcg_temp_new_i32(); + TCGv_i32 hi = tcg_temp_new_i32(); + + tcg_gen_mul_i32(lo, m1, m2); + tcg_gen_sari_i32(hi, lo, 31); if (op == MAC16_MULA) { - tcg_gen_add_i64(tmp, tmp, res64); + tcg_gen_add2_i32(cpu_SR[ACCLO], cpu_SR[ACCHI], + cpu_SR[ACCLO], cpu_SR[ACCHI], + lo, hi); } else { - tcg_gen_sub_i64(tmp, tmp, res64); + tcg_gen_sub2_i32(cpu_SR[ACCLO], cpu_SR[ACCHI], + cpu_SR[ACCLO], cpu_SR[ACCHI], + lo, hi); } - tcg_gen_trunc_i64_i32(cpu_SR[ACCLO], tmp); - tcg_gen_shri_i64(tmp, tmp, 32); - tcg_gen_trunc_i64_i32(cpu_SR[ACCHI], tmp); tcg_gen_ext8s_i32(cpu_SR[ACCHI], cpu_SR[ACCHI]); - tcg_temp_free(res); - tcg_temp_free_i64(res64); - tcg_temp_free_i64(tmp); + tcg_temp_free_i32(lo); + tcg_temp_free_i32(hi); } tcg_temp_free(m1); tcg_temp_free(m2); |