164c7afaf5
Constant fold powf, given two constant operands and a compatible type Reviewed By: ftynse Differential Revision: https://reviews.llvm.org/D121845
110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
//===- MathOps.cpp - MLIR operations for math implementation --------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "mlir/Dialect/Arithmetic/IR/Arithmetic.h"
|
|
#include "mlir/Dialect/Math/IR/Math.h"
|
|
#include "mlir/IR/Builders.h"
|
|
|
|
using namespace mlir;
|
|
using namespace mlir::math;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// TableGen'd op method definitions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define GET_OP_CLASSES
|
|
#include "mlir/Dialect/Math/IR/MathOps.cpp.inc"
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// CeilOp folder
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
OpFoldResult math::CeilOp::fold(ArrayRef<Attribute> operands) {
|
|
auto constOperand = operands.front();
|
|
if (!constOperand)
|
|
return {};
|
|
|
|
auto attr = constOperand.dyn_cast<FloatAttr>();
|
|
if (!attr)
|
|
return {};
|
|
|
|
APFloat sourceVal = attr.getValue();
|
|
sourceVal.roundToIntegral(llvm::RoundingMode::TowardPositive);
|
|
|
|
return FloatAttr::get(getType(), sourceVal);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Log2Op folder
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
OpFoldResult math::Log2Op::fold(ArrayRef<Attribute> operands) {
|
|
auto constOperand = operands.front();
|
|
if (!constOperand)
|
|
return {};
|
|
|
|
auto attr = constOperand.dyn_cast<FloatAttr>();
|
|
if (!attr)
|
|
return {};
|
|
|
|
auto ft = getType().cast<FloatType>();
|
|
|
|
APFloat apf = attr.getValue();
|
|
|
|
if (apf.isNegative())
|
|
return {};
|
|
|
|
if (ft.getWidth() == 64)
|
|
return FloatAttr::get(getType(), log2(apf.convertToDouble()));
|
|
|
|
if (ft.getWidth() == 32)
|
|
return FloatAttr::get(getType(), log2f(apf.convertToFloat()));
|
|
|
|
return {};
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// PowFOp folder
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
OpFoldResult math::PowFOp::fold(ArrayRef<Attribute> operands) {
|
|
auto ft = getType().dyn_cast<FloatType>();
|
|
if (!ft)
|
|
return {};
|
|
|
|
APFloat vals[2]{APFloat(ft.getFloatSemantics()),
|
|
APFloat(ft.getFloatSemantics())};
|
|
for (int i = 0; i < 2; ++i) {
|
|
if (!operands[i])
|
|
return {};
|
|
|
|
auto attr = operands[i].dyn_cast<FloatAttr>();
|
|
if (!attr)
|
|
return {};
|
|
|
|
vals[i] = attr.getValue();
|
|
}
|
|
|
|
if (ft.getWidth() == 64)
|
|
return FloatAttr::get(
|
|
getType(), pow(vals[0].convertToDouble(), vals[1].convertToDouble()));
|
|
|
|
if (ft.getWidth() == 32)
|
|
return FloatAttr::get(
|
|
getType(), powf(vals[0].convertToFloat(), vals[1].convertToFloat()));
|
|
|
|
return {};
|
|
}
|
|
|
|
/// Materialize an integer or floating point constant.
|
|
Operation *math::MathDialect::materializeConstant(OpBuilder &builder,
|
|
Attribute value, Type type,
|
|
Location loc) {
|
|
return builder.create<arith::ConstantOp>(loc, value, type);
|
|
}
|