1/*===------------- amxtf32intrin.h - AMX_TF32 intrinsics -*- C++ -*---------===
2 *
3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 * See https://llvm.org/LICENSE.txt for license information.
5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 *
7 *===------------------------------------------------------------------------===
8 */
9
10#ifndef __IMMINTRIN_H
11#error "Never use <amxtf32intrin.h> directly; include <immintrin.h> instead."
12#endif // __IMMINTRIN_H
13
14#ifndef __AMX_TF32INTRIN_H
15#define __AMX_TF32INTRIN_H
16#ifdef __x86_64__
17
18#define __DEFAULT_FN_ATTRS_TF32 \
19 __attribute__((__always_inline__, __nodebug__, __target__("amx-tf32")))
20
21/// Do Matrix Multiplication of \a a and \a b, and then do Matrix Plus
22/// with \a srcdst.
23/// All the calculation is base on float32 but with the lower 13-bit set to 0.
24///
25/// \headerfile <immintrin.h>
26///
27/// \code
28/// void _tile_mmultf32ps(constexpr int srcdst, constexpr int a, \
29/// constexpr int b);
30/// \endcode
31///
32/// This intrinsic corresponds to the <c> TMMULTF32PS </c> instruction.
33///
34/// \param srcdst
35/// The destination tile. Max size is 1024 Bytes.
36/// \param a
37/// The 1st source tile. Max size is 1024 Bytes.
38/// \param b
39/// The 2nd source tile. Max size is 1024 Bytes.
40///
41/// \code{.operation}
42/// DEFINE zero_lower_mantissa_bits_fp32(x[31:0]) {
43/// dword[12:0] := 0
44/// dword[31:13] := x[31:13]
45/// return dword
46/// }
47///
48/// DEFINE silence_snan_fp32(x[31:0]) {
49/// IF (x.exponent == 255 and x.fraction != 0 and x.fraction[22] == 0)
50/// x.fraction[22] := 1
51/// return x
52/// }
53///
54/// elements_a := a.colsb / 4
55/// elements_dest := srcdst.colsb / 4
56///
57/// FOR m = 0 TO (srcdst.rows-1)
58/// tmp[511:0] := 0
59/// FOR k = 0 TO (elements_a-1)
60/// FOR n = 0 TO (elements_dest-1)
61/// af := silence_snan_fp32(a.row[m].fp32[k])
62/// bf := silence_snan_fp32(b.row[k].fp32[n])
63/// tmp.fp32[n] += zero_lower_mantissa_bits_fp32(af)
64/// * zero_lower_mantissa_bits_fp32(bf)
65/// ENDFOR
66/// ENDFOR
67///
68/// FOR n = 0 TO (elements_dest-1)
69/// tmp.fp32[n] += srcdst.row[m].fp32[n]
70/// ENDFOR
71/// write_row_and_zero(srcdst, m, tmp, srcdst.colsb)
72///
73/// ENDFOR
74///
75/// zero_upper_rows(srcdst, srcdst.rows)
76/// zero_tileconfig_start()
77/// \endcode
78#define _tile_mmultf32ps(srcdst, a, b) \
79 __builtin_ia32_tmmultf32ps((srcdst), (a), (b))
80
81static __inline__ _tile1024i __DEFAULT_FN_ATTRS_TF32
82_tile_mmultf32ps_internal(unsigned short m, unsigned short n, unsigned short k,
83 _tile1024i dst, _tile1024i src1, _tile1024i src2) {
84 return __builtin_ia32_tmmultf32ps_internal(m, n, k, dst, src1, src2);
85}
86
87/// Do Matrix Multiplication of src0 and src1, and then do Matrix Plus with dst.
88/// All the calculation is base on float32 but with the lower 13-bit set to 0.
89///
90/// \headerfile <immintrin.h>
91///
92/// This intrinsic corresponds to the <c> TMMULTF32PS </c> instruction.
93///
94/// \param dst
95/// The destination tile. Max size is 1024 Bytes.
96/// \param src0
97/// The 1st source tile. Max size is 1024 Bytes.
98/// \param src1
99/// The 2nd source tile. Max size is 1024 Bytes.
100__DEFAULT_FN_ATTRS_TF32
101static void __tile_mmultf32ps(__tile1024i *dst, __tile1024i src0,
102 __tile1024i src1) {
103 dst->tile = _tile_mmultf32ps_internal(src0.row, src1.col, src0.col, dst->tile,
104 src0.tile, src1.tile);
105}
106
107#endif // __x86_64__
108#endif // __AMX_TF32INTRIN_H