| //===-- x86_64 implementations of the fma function --------------*- C++ -*-===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIBC_UTILS_FPUTIL_X86_64_FMA_H |
| #define LLVM_LIBC_UTILS_FPUTIL_X86_64_FMA_H |
| |
| #include "utils/CPP/TypeTraits.h" |
| |
| namespace __llvm_libc { |
| namespace fputil { |
| |
| template <typename T> |
| static inline cpp::EnableIfType<cpp::IsSame<T, float>::Value, T> fma(T x, T y, |
| T z) { |
| float result = x; |
| __asm__ __volatile__("vfmadd213ss %x2, %x1, %x0" |
| : "+x"(result) |
| : "x"(y), "x"(z)); |
| return result; |
| } |
| |
| template <typename T> |
| static inline cpp::EnableIfType<cpp::IsSame<T, double>::Value, T> fma(T x, T y, |
| T z) { |
| double result = x; |
| __asm__ __volatile__("vfmadd213sd %x2, %x1, %x0" |
| : "+x"(result) |
| : "x"(y), "x"(z)); |
| return result; |
| } |
| |
| } // namespace fputil |
| } // namespace __llvm_libc |
| |
| #endif // LLVM_LIBC_UTILS_FPUTIL_X86_64_FMA_H |