[clang] [CIR][NFC] Upstream support for FP environments and RAII options (PR #179121)

[Ayokunle Amodu via cfe-commits]

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@@ -0,0 +1,64 @@
+//===-- 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 "clang/CIR/Dialect/IR/FPEnv.h"
+
+namespace cir {
+
+std::optional<llvm::StringRef>
+convertRoundingModeToStr(llvm::RoundingMode useRounding) {
+  std::optional<llvm::StringRef> roundingStr;
+  switch (useRounding) {
+  case llvm::RoundingMode::Dynamic:
+    roundingStr = "round.dynamic";
+    break;
+  case llvm::RoundingMode::NearestTiesToEven:
+    roundingStr = "round.tonearest";
+    break;
+  case llvm::RoundingMode::NearestTiesToAway:
+    roundingStr = "round.tonearestaway";
+    break;
+  case llvm::RoundingMode::TowardNegative:
+    roundingStr = "round.downward";
+    break;
+  case llvm::RoundingMode::TowardPositive:
+    roundingStr = "round.upward";
+    break;
+  case llvm::RoundingMode::TowardZero:
+    roundingStr = "round.towardZero";
+    break;
+  default:
+    break;
+  }
+  return roundingStr;
+}
+
+std::optional<llvm::StringRef>
+convertExceptionBehaviorToStr(fp::ExceptionBehavior useExcept) {
+  std::optional<llvm::StringRef> exceptStr;
+  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;
+}
+
+} // namespace cir
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ayokunle321 wrote:

Removed this file

https://github.com/llvm/llvm-project/pull/179121