Mercurial > hg > CbC > CbC_llvm
view llvm/lib/IR/FPEnv.cpp @ 150:1d019706d866
LLVM10
author | anatofuz |
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date | Thu, 13 Feb 2020 15:10:13 +0900 |
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children | 0572611fdcc8 |
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//===-- FPEnv.cpp ---- FP Environment -------------------------------------===// // // 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 // //===----------------------------------------------------------------------===// // /// @file /// This file contains the implementations of entities that describe floating /// point environment. // //===----------------------------------------------------------------------===// #include "llvm/ADT/StringSwitch.h" #include "llvm/IR/FPEnv.h" namespace llvm { Optional<fp::RoundingMode> StrToRoundingMode(StringRef RoundingArg) { // For dynamic rounding mode, we use round to nearest but we will set the // 'exact' SDNodeFlag so that the value will not be rounded. return StringSwitch<Optional<fp::RoundingMode>>(RoundingArg) .Case("round.dynamic", fp::rmDynamic) .Case("round.tonearest", fp::rmToNearest) .Case("round.downward", fp::rmDownward) .Case("round.upward", fp::rmUpward) .Case("round.towardzero", fp::rmTowardZero) .Default(None); } Optional<StringRef> RoundingModeToStr(fp::RoundingMode UseRounding) { Optional<StringRef> RoundingStr = None; switch (UseRounding) { case fp::rmDynamic: RoundingStr = "round.dynamic"; break; case fp::rmToNearest: RoundingStr = "round.tonearest"; break; case fp::rmDownward: RoundingStr = "round.downward"; break; case fp::rmUpward: RoundingStr = "round.upward"; break; case fp::rmTowardZero: RoundingStr = "round.towardzero"; break; } return RoundingStr; } Optional<fp::ExceptionBehavior> StrToExceptionBehavior(StringRef ExceptionArg) { return StringSwitch<Optional<fp::ExceptionBehavior>>(ExceptionArg) .Case("fpexcept.ignore", fp::ebIgnore) .Case("fpexcept.maytrap", fp::ebMayTrap) .Case("fpexcept.strict", fp::ebStrict) .Default(None); } Optional<StringRef> ExceptionBehaviorToStr(fp::ExceptionBehavior UseExcept) { Optional<StringRef> ExceptStr = None; switch (UseExcept) { case fp::ebStrict: ExceptStr = "fpexcept.strict"; break; case fp::ebIgnore: ExceptStr = "fpexcept.ignore"; break; case fp::ebMayTrap: ExceptStr = "fpexcept.maytrap"; break; } return ExceptStr; } }