Prototype: APFloat CPU runnerusers/matthias-springer/apfloat_runner

1 files changed, 40 insertions, 0 deletions

diff --git a/mlir/lib/ExecutionEngine/APFloatWrappers.cpp b/mlir/lib/ExecutionEngine/APFloatWrappers.cpp
new file mode 100644
index 000000000000..7879c7580335
--- /dev/null
+++ b/mlir/lib/ExecutionEngine/APFloatWrappers.cpp
@@ -0,0 +1,40 @@
+//===- ArmRunnerUtils.cpp - Utilities for configuring architecture properties //
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/APFloat.h"
+#include <iostream>
+
+#if (defined(_WIN32) || defined(__CYGWIN__))
+#define MLIR_APFLOAT_WRAPPERS_EXPORTED __declspec(dllexport)
+#else
+#define MLIR_APFLOAT_WRAPPERS_EXPORTED __attribute__((visibility("default")))
+#endif
+
+extern "C" {
+
+int64_t MLIR_APFLOAT_WRAPPERS_EXPORTED APFloat_add(int32_t semantics,
+                                                   uint64_t a, uint64_t b) {
+  const llvm::fltSemantics &sem = llvm::APFloatBase::EnumToSemantics(
+      static_cast<llvm::APFloatBase::Semantics>(semantics));
+  unsigned bitWidth = llvm::APFloatBase::semanticsSizeInBits(sem);
+  llvm::APFloat lhs(sem, llvm::APInt(bitWidth, a));
+  llvm::APFloat rhs(sem, llvm::APInt(bitWidth, b));
+  auto status = lhs.add(rhs, llvm::RoundingMode::NearestTiesToEven);
+  return lhs.bitcastToAPInt().getZExtValue();
+}
+
+void MLIR_APFLOAT_WRAPPERS_EXPORTED printApFloat(int32_t semantics,
+                                                 uint64_t a) {
+  const llvm::fltSemantics &sem = llvm::APFloatBase::EnumToSemantics(
+      static_cast<llvm::APFloatBase::Semantics>(semantics));
+  unsigned bitWidth = llvm::APFloatBase::semanticsSizeInBits(sem);
+  llvm::APFloat x(sem, llvm::APInt(bitWidth, a));
+  double d = x.convertToDouble();
+  std::cout << d << std::endl;
+}
+}