diff options
Diffstat (limited to 'src/devices/cpu/rsp/vmulh.h')
-rw-r--r-- | src/devices/cpu/rsp/vmulh.h | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/src/devices/cpu/rsp/vmulh.h b/src/devices/cpu/rsp/vmulh.h deleted file mode 100644 index 6265961f5a0..00000000000 --- a/src/devices/cpu/rsp/vmulh.h +++ /dev/null @@ -1,30 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Tyler J. Stachecki,Ryan Holtz - -inline rsp_vec_t vec_vmadh_vmudh(uint32_t iw, rsp_vec_t vs, rsp_vec_t vt, rsp_vec_t zero, rsp_vec_t *acc_lo, rsp_vec_t *acc_md, rsp_vec_t *acc_hi) -{ - rsp_vec_t lo = _mm_mullo_epi16(vs, vt); - rsp_vec_t hi = _mm_mulhi_epi16(vs, vt); - - if (iw & 0x8) // VMADH - { - // Tricky part: start accumulating everything. - // Get/keep the carry as we'll add it in later. - rsp_vec_t overflow_mask = _mm_adds_epu16(*acc_md, lo); - *acc_md = _mm_add_epi16(*acc_md, lo); - - overflow_mask = _mm_cmpeq_epi16(*acc_md, overflow_mask); - overflow_mask = _mm_cmpeq_epi16(overflow_mask, zero); - - hi = _mm_sub_epi16(hi, overflow_mask); - *acc_hi = _mm_add_epi16(*acc_hi, hi); - } - else // VMUDH - { - *acc_lo = zero; - *acc_md = lo; - *acc_hi = hi; - } - - return sclamp_acc_to_mid(*acc_md, *acc_hi); -} |