740e2e908c
We can implement a polynomial approximation of math.tan by decomposing to `math.sin` and `math.cos`. While it is not technically a polynomial approximation it should be the most straight forward approximation. Reviewed By: jpienaar Differential Revision: https://reviews.llvm.org/D144980
48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
//===- TestExpandMath.cpp - Test expand math op into exp form -------------===//
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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 contains test passes for expanding math operations.
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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/Dialect/Math/Transforms/Passes.h"
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#include "mlir/Dialect/SCF/IR/SCF.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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using namespace mlir;
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namespace {
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struct TestExpandMathPass
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: public PassWrapper<TestExpandMathPass, OperationPass<>> {
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MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestExpandMathPass)
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void runOnOperation() override;
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StringRef getArgument() const final { return "test-expand-math"; }
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void getDependentDialects(DialectRegistry ®istry) const override {
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registry.insert<arith::ArithDialect, scf::SCFDialect>();
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}
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StringRef getDescription() const final { return "Test expanding math"; }
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};
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} // namespace
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void TestExpandMathPass::runOnOperation() {
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RewritePatternSet patterns(&getContext());
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populateExpandCtlzPattern(patterns);
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populateExpandTanPattern(patterns);
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populateExpandTanhPattern(patterns);
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(void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns));
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}
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namespace mlir {
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namespace test {
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void registerTestExpandMathPass() { PassRegistration<TestExpandMathPass>(); }
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} // namespace test
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} // namespace mlir
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