b56e65d318
This diff adds initial (partial) support for "fastmath" attributes for floating point operations in the arithmetic dialect. The "fastmath" attributes are implemented using a default-valued bit enum. The defined flags currently mirror the fastmath flags in the LLVM dialect (and in LLVM itself). Extending the set of flags (if necessary) is left as a future task. In this diff: - Definition of FastMathAttr as a custom attribute in the Arithmetic dialect that inherits from the EnumAttr class. - Definition of ArithFastMathInterface, which is an interface that is implemented by operations that have an arith::fastmath attribute. - Declaration of a default-valued fastmath attribute for unary and (some) binary floating point operations in the Arithmetic dialect. - Conversion code to lower arithmetic fastmath flags to LLVM fastmath flags NOT in this diff (but planned or currently in progress): - Documentation of flag meanings - Addition of FastMathAttr attributes to other dialects that might lower to the Arithmetic dialect (e.g. Math and Complex) - Folding/rewrite implementations that are enabled by fastmath flags - Specification of fastmath values from Python bindings (pending other in- progress diffs) Reviewed By: mehdi_amini, vzakhari Differential Revision: https://reviews.llvm.org/D126305
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
//===- ArithDialect.cpp - MLIR Arith dialect implementation -----===//
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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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#include "mlir/Dialect/Arith/IR/Arith.h"
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#include "mlir/IR/Builders.h"
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#include "mlir/IR/DialectImplementation.h"
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#include "mlir/Transforms/InliningUtils.h"
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#include "llvm/ADT/TypeSwitch.h"
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using namespace mlir;
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using namespace mlir::arith;
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#include "mlir/Dialect/Arith/IR/ArithOpsDialect.cpp.inc"
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#include "mlir/Dialect/Arith/IR/ArithOpsInterfaces.cpp.inc"
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#define GET_ATTRDEF_CLASSES
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#include "mlir/Dialect/Arith/IR/ArithOpsAttributes.cpp.inc"
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namespace {
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/// This class defines the interface for handling inlining for arithmetic
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/// dialect operations.
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struct ArithInlinerInterface : public DialectInlinerInterface {
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using DialectInlinerInterface::DialectInlinerInterface;
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/// All arithmetic dialect ops can be inlined.
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bool isLegalToInline(Operation *, Region *, bool,
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BlockAndValueMapping &) const final {
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return true;
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}
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};
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} // namespace
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void arith::ArithDialect::initialize() {
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addOperations<
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#define GET_OP_LIST
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#include "mlir/Dialect/Arith/IR/ArithOps.cpp.inc"
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>();
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addAttributes<
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#define GET_ATTRDEF_LIST
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#include "mlir/Dialect/Arith/IR/ArithOpsAttributes.cpp.inc"
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>();
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addInterfaces<ArithInlinerInterface>();
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}
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/// Materialize an integer or floating point constant.
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Operation *arith::ArithDialect::materializeConstant(OpBuilder &builder,
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Attribute value, Type type,
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Location loc) {
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return builder.create<arith::ConstantOp>(loc, value, type);
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}
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