5230955af7
This patch adds `flang -fc1` option `-ffp-maxmin-behavior` and propagates it throughout Flang, so that semantics context, lowering and the pass pipeline builder can use it. MAX/MIN intrinsic and OpenACC max/min reduction lowering are now controlled by the option. I kept the `Legacy` mode, which is the default and matches the current behavior. I am going to test and merge a follow-up patch that replaces `Legacy` with `Portable`. RFC: https://discourse.llvm.org/t/flang-canonical-and-optimizable-representation-for-min-max/90037
24 lines
880 B
C++
24 lines
880 B
C++
//===--- Support/FPMaxminBehavior.cpp - Parse FP max/min behavior ---------===//
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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 "flang/Support/FPMaxminBehavior.h"
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#include "llvm/ADT/StringSwitch.h"
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namespace Fortran::common {
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FPMaxminBehavior parseFPMaxminBehavior(llvm::StringRef value) {
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return llvm::StringSwitch<FPMaxminBehavior>(value)
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.Case("legacy", FPMaxminBehavior::Legacy)
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.Case("portable", FPMaxminBehavior::Portable)
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.Case("extremum", FPMaxminBehavior::Extremum)
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.Case("extremenum", FPMaxminBehavior::ExtremeNum)
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.Default(FPMaxminBehavior::Legacy);
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}
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} // namespace Fortran::common
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