cdbc5f1e10
This uses an int64_t-based fastpath for the common case and falls back to SlowMPInt to handle the rare cases where larger numbers occur. It uses `__builtin_*` for performance through the support in LLVM MathExtras. Using this in the Presburger library results in a minor performance *improvement* over any commit hash before sequence of patches starting atd5e31cf38a. This was previously reverted in1e10d35ea9due to a build failure; relanding now with an attempted fix. Reviewed By: Groverkss, ftynse Differential Revision: https://reviews.llvm.org/D128811
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
//===- MPInt.cpp - MLIR MPInt Class ---------------------------------------===//
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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/Analysis/Presburger/MPInt.h"
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#include "llvm/Support/MathExtras.h"
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using namespace mlir;
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using namespace presburger;
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llvm::hash_code mlir::presburger::hash_value(const MPInt &x) {
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if (x.isSmall())
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return llvm::hash_value(x.getSmall());
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return detail::hash_value(x.getLarge());
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}
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/// ---------------------------------------------------------------------------
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/// Printing.
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/// ---------------------------------------------------------------------------
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llvm::raw_ostream &MPInt::print(llvm::raw_ostream &os) const {
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if (isSmall())
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return os << valSmall;
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return os << valLarge;
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}
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void MPInt::dump() const { print(llvm::errs()); }
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llvm::raw_ostream &mlir::presburger::operator<<(llvm::raw_ostream &os,
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const MPInt &x) {
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x.print(os);
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return os;
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}
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