3f9cabae00
This PR adds `f8E8M0FNU` type to MLIR. `f8E8M0FNU` type is proposed in [OpenCompute MX Specification](https://www.opencompute.org/documents/ocp-microscaling-formats-mx-v1-0-spec-final-pdf). It defines a 8-bit floating point number with bit layout S0E8M0. Unlike IEEE-754 types, there are no infinity, denormals, zeros or negative values. ```c f8E8M0FNU - Exponent bias: 127 - Maximum stored exponent value: 254 (binary 1111'1110) - Maximum unbiased exponent value: 254 - 127 = 127 - Minimum stored exponent value: 0 (binary 0000'0000) - Minimum unbiased exponent value: 0 − 127 = -127 - Doesn't have zero - Doesn't have infinity - NaN is encoded as binary 1111'1111 Additional details: - Zeros cannot be represented - Negative values cannot be represented - Mantissa is always 1 ``` Related PRs: - [PR-107127](https://github.com/llvm/llvm-project/pull/107127) [APFloat] Add APFloat support for E8M0 type - [PR-105573](https://github.com/llvm/llvm-project/pull/105573) [MLIR] Add f6E3M2FN type - was used as a template for this PR - [PR-107999](https://github.com/llvm/llvm-project/pull/107999) [MLIR] Add f6E2M3FN type - [PR-108877](https://github.com/llvm/llvm-project/pull/108877) [MLIR] Add f4E2M1FN type
140 lines
3.5 KiB
C++
140 lines
3.5 KiB
C++
//===- TokenKinds.def - MLIR Token Description ------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is intended to be #include'd multiple times to extract information
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// about tokens for various clients in the lexer.
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//
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//===----------------------------------------------------------------------===//
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#if !defined(TOK_MARKER) && !defined(TOK_IDENTIFIER) && \
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!defined(TOK_LITERAL) && !defined(TOK_PUNCTUATION) && \
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!defined(TOK_KEYWORD)
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#error Must define one of the TOK_ macros.
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#endif
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#ifndef TOK_MARKER
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#define TOK_MARKER(X)
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#endif
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#ifndef TOK_IDENTIFIER
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#define TOK_IDENTIFIER(NAME)
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#endif
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#ifndef TOK_LITERAL
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#define TOK_LITERAL(NAME)
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#endif
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#ifndef TOK_PUNCTUATION
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#define TOK_PUNCTUATION(NAME, SPELLING)
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#endif
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#ifndef TOK_KEYWORD
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#define TOK_KEYWORD(SPELLING)
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#endif
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// Markers
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TOK_MARKER(eof)
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TOK_MARKER(error)
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TOK_MARKER(code_complete)
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// Identifiers.
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TOK_IDENTIFIER(bare_identifier) // foo
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TOK_IDENTIFIER(at_identifier) // @foo
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TOK_IDENTIFIER(hash_identifier) // #foo
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TOK_IDENTIFIER(percent_identifier) // %foo
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TOK_IDENTIFIER(caret_identifier) // ^foo
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TOK_IDENTIFIER(exclamation_identifier) // !foo
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// Literals
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TOK_LITERAL(floatliteral) // 2.0
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TOK_LITERAL(integer) // 42
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TOK_LITERAL(string) // "foo"
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TOK_LITERAL(inttype) // i4, si8, ui16
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// Punctuation.
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TOK_PUNCTUATION(arrow, "->")
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TOK_PUNCTUATION(at, "@")
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TOK_PUNCTUATION(colon, ":")
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TOK_PUNCTUATION(comma, ",")
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TOK_PUNCTUATION(ellipsis, "...")
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TOK_PUNCTUATION(equal, "=")
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TOK_PUNCTUATION(greater, ">")
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TOK_PUNCTUATION(l_brace, "{")
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TOK_PUNCTUATION(l_paren, "(")
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TOK_PUNCTUATION(l_square, "[")
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TOK_PUNCTUATION(less, "<")
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TOK_PUNCTUATION(minus, "-")
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TOK_PUNCTUATION(plus, "+")
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TOK_PUNCTUATION(question, "?")
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TOK_PUNCTUATION(r_brace, "}")
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TOK_PUNCTUATION(r_paren, ")")
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TOK_PUNCTUATION(r_square, "]")
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TOK_PUNCTUATION(star, "*")
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TOK_PUNCTUATION(vertical_bar, "|")
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TOK_PUNCTUATION(file_metadata_begin, "{-#")
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TOK_PUNCTUATION(file_metadata_end, "#-}")
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// Keywords. These turn "foo" into Token::kw_foo enums.
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// NOTE: Please key these alphabetized to make it easier to find something in
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// this list and to cater to OCD.
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TOK_KEYWORD(affine_map)
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TOK_KEYWORD(affine_set)
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TOK_KEYWORD(array)
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TOK_KEYWORD(attributes)
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TOK_KEYWORD(bf16)
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TOK_KEYWORD(ceildiv)
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TOK_KEYWORD(complex)
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TOK_KEYWORD(dense)
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TOK_KEYWORD(dense_resource)
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TOK_KEYWORD(distinct)
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TOK_KEYWORD(f16)
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TOK_KEYWORD(f32)
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TOK_KEYWORD(f64)
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TOK_KEYWORD(f80)
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TOK_KEYWORD(f8E5M2)
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TOK_KEYWORD(f8E4M3)
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TOK_KEYWORD(f8E4M3FN)
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TOK_KEYWORD(f8E5M2FNUZ)
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TOK_KEYWORD(f8E4M3FNUZ)
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TOK_KEYWORD(f8E4M3B11FNUZ)
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TOK_KEYWORD(f8E3M4)
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TOK_KEYWORD(f4E2M1FN)
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TOK_KEYWORD(f6E2M3FN)
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TOK_KEYWORD(f6E3M2FN)
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TOK_KEYWORD(f8E8M0FNU)
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TOK_KEYWORD(f128)
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TOK_KEYWORD(false)
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TOK_KEYWORD(floordiv)
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TOK_KEYWORD(for)
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TOK_KEYWORD(func)
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TOK_KEYWORD(index)
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TOK_KEYWORD(loc)
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TOK_KEYWORD(max)
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TOK_KEYWORD(memref)
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TOK_KEYWORD(min)
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TOK_KEYWORD(mod)
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TOK_KEYWORD(none)
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TOK_KEYWORD(offset)
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TOK_KEYWORD(size)
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TOK_KEYWORD(sparse)
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TOK_KEYWORD(step)
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TOK_KEYWORD(strided)
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TOK_KEYWORD(symbol)
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TOK_KEYWORD(tensor)
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TOK_KEYWORD(tf32)
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TOK_KEYWORD(to)
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TOK_KEYWORD(true)
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TOK_KEYWORD(tuple)
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TOK_KEYWORD(type)
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TOK_KEYWORD(unit)
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TOK_KEYWORD(vector)
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#undef TOK_MARKER
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#undef TOK_IDENTIFIER
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#undef TOK_LITERAL
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#undef TOK_PUNCTUATION
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#undef TOK_KEYWORD
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