diff options
| author | MITSUNARI Shigeo <[email protected]> | 2024-10-17 18:31:28 +0900 |
|---|---|---|
| committer | MITSUNARI Shigeo <[email protected]> | 2024-10-17 18:31:28 +0900 |
| commit | d7ed9fdefd39f0e3829758d8135f74aa4bd426e2 (patch) | |
| tree | 5537dbae608000942b7c73b37f89d5353688ea48 /doc | |
| parent | d79ad49523f3467f83c80e3f040bd8784541145d (diff) | |
| download | xbyak-d7ed9fdefd39f0e3829758d8135f74aa4bd426e2.tar.gz xbyak-d7ed9fdefd39f0e3829758d8135f74aa4bd426e2.zip | |
[skip ci] [doc] reorder the paragraph
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/usage.md | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/usage.md b/doc/usage.md index b8073ce..132020a 100644 --- a/doc/usage.md +++ b/doc/usage.md @@ -110,6 +110,15 @@ vfpclasspd k5{k3}, [rax+64]{1to2}, 5 --> vfpclasspd(k5|k3, xword_b [rax+64], vfpclassps k5{k3}, [rax+64]{1to4}, 5 --> vfpclassps(k5|k3, yword_b [rax+64], 5); // broadcast 64-bit to 256-bit ``` +### Remark +* `k1`, ..., `k7` are opmask registers. + - `k0` is dealt as no mask. + - e.g. `vmovaps(zmm0|k0, ptr[rax]);` and `vmovaps(zmm0|T_z, ptr[rax]);` are same to `vmovaps(zmm0, ptr[rax]);`. +* use `| T_z`, `| T_sae`, `| T_rn_sae`, `| T_rd_sae`, `| T_ru_sae`, `| T_rz_sae` instead of `,{z}`, `,{sae}`, `,{rn-sae}`, `,{rd-sae}`, `,{ru-sae}`, `,{rz-sae}` respectively. +* `k4 | k3` is different from `k3 | k4`. +* use `ptr_b` for broadcast `{1toX}`. X is automatically determined. +* specify `xword`/`yword`/`zword(_b)` for m128/m256/m512 if necessary. + ## Selecting AVX512-VNNI, AVX-VNNI, AVX-VNNI-INT8, AVX10.2. Some mnemonics have some types of encodings: VEX, EVEX, AVX10.2. The functions for these mnemonics include an optional parameter as the last argument to specify the encoding. @@ -151,15 +160,6 @@ feature|AVX-VNNI-INT8, AVX512-FP16|AVX10.2 At first, I attempted to use EvexEncoding (resp. VexEncoding) instead of AVX10v2Encoding (resp. EvexEncoding) for `setDefaultEncodingAVX10`. But I abandoned this idea when I found that `vmovd` and `vmovw` had different EVEX encodings in AVX512 and AVX10.2 -### Remark -* `k1`, ..., `k7` are opmask registers. - - `k0` is dealt as no mask. - - e.g. `vmovaps(zmm0|k0, ptr[rax]);` and `vmovaps(zmm0|T_z, ptr[rax]);` are same to `vmovaps(zmm0, ptr[rax]);`. -* use `| T_z`, `| T_sae`, `| T_rn_sae`, `| T_rd_sae`, `| T_ru_sae`, `| T_rz_sae` instead of `,{z}`, `,{sae}`, `,{rn-sae}`, `,{rd-sae}`, `,{ru-sae}`, `,{rz-sae}` respectively. -* `k4 | k3` is different from `k3 | k4`. -* use `ptr_b` for broadcast `{1toX}`. X is automatically determined. -* specify `xword`/`yword`/`zword(_b)` for m128/m256/m512 if necessary. - ## APX [Advanced Performance Extensions (APX) Architecture Specification](https://www.intel.com/content/www/us/en/content-details/786223/intel-advanced-performance-extensions-intel-apx-architecture-specification.html) - Support 64-bit 16 additional GPRs (general-purpose registers) r16, ..., r31 |