diff options
Diffstat (limited to 'src/devices/cpu/rsp/vcl.h')
-rw-r--r-- | src/devices/cpu/rsp/vcl.h | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/src/devices/cpu/rsp/vcl.h b/src/devices/cpu/rsp/vcl.h deleted file mode 100644 index e09a13d5a8e..00000000000 --- a/src/devices/cpu/rsp/vcl.h +++ /dev/null @@ -1,65 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Tyler J. Stachecki,Ryan Holtz - -inline rsp_vec_t vec_vcl(rsp_vec_t vs, rsp_vec_t vt, rsp_vec_t zero, rsp_vec_t *ge, rsp_vec_t *le, rsp_vec_t eq, rsp_vec_t sign, rsp_vec_t vce) -{ - // sign_negvt = sign ? -vt : vt - rsp_vec_t sign_negvt = _mm_xor_si128(vt, sign); - sign_negvt = _mm_sub_epi16(sign_negvt, sign); - - // Compute diff, diff_zero, ncarry, and nvce: - // Note: diff = sign ? (vs + vt) : (vs - vt). - rsp_vec_t diff = _mm_sub_epi16(vs, sign_negvt); - rsp_vec_t ncarry = _mm_adds_epu16(vs, vt); - ncarry = _mm_cmpeq_epi16(diff, ncarry); - rsp_vec_t nvce = _mm_cmpeq_epi16(vce, zero); - rsp_vec_t diff_zero = _mm_cmpeq_epi16(diff, zero); - - // Compute results for if (sign && ne): - rsp_vec_t le_case1 = _mm_and_si128(diff_zero, ncarry); - le_case1 = _mm_and_si128(nvce, le_case1); - rsp_vec_t le_case2 = _mm_or_si128(diff_zero, ncarry); - le_case2 = _mm_and_si128(vce, le_case2); - rsp_vec_t le_eq = _mm_or_si128(le_case1, le_case2); - - // Compute results for if (!sign && ne): - rsp_vec_t ge_eq = _mm_subs_epu16(vt, vs); - ge_eq = _mm_cmpeq_epi16(ge_eq, zero); - - // Blend everything together. Caveat: we don't update - // the results of ge/le if ne is false, so be careful. - rsp_vec_t do_le = _mm_andnot_si128(eq, sign); -#if (defined(__SSE4_1__) || defined(_MSC_VER)) - *le = _mm_blendv_epi8(*le, le_eq, do_le); -#else - le_eq = _mm_and_si128(do_le, le_eq); - *le = _mm_andnot_si128(do_le, *le); - *le = _mm_or_si128(le_eq, *le); -#endif - - rsp_vec_t do_ge = _mm_or_si128(sign, eq); -#if (defined(__SSE4_1__) || defined(_MSC_VER)) - *ge = _mm_blendv_epi8(ge_eq, *ge, do_ge); -#else - *ge = _mm_and_si128(do_ge, *ge); - ge_eq = _mm_andnot_si128(do_ge, ge_eq); - *ge = _mm_or_si128(ge_eq, *ge); -#endif - - // Mux the result based on the value of sign. -#if (defined(__SSE4_1__) || defined(_MSC_VER)) - rsp_vec_t mux_mask = _mm_blendv_epi8(*ge, *le, sign); -#else - do_le = _mm_and_si128(sign, *le); - do_ge = _mm_andnot_si128(sign, *ge); - rsp_vec_t mux_mask = _mm_or_si128(do_le, do_ge); -#endif - -#if (defined(__SSE4_1__) || defined(_MSC_VER)) - return _mm_blendv_epi8(vs, sign_negvt, mux_mask); -#else - sign_negvt = _mm_and_si128(mux_mask, sign_negvt); - vs = _mm_andnot_si128(mux_mask, vs); - return _mm_or_si128(sign_negvt, vs); -#endif -} |