clang 18.0.0git
xtestintrin.h
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1/*===---- xtestintrin.h - XTEST intrinsic ----------------------------------===
2 *
3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 * See https://llvm.org/LICENSE.txt for license information.
5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 *
7 *===-----------------------------------------------------------------------===
8 */
9
10#ifndef __IMMINTRIN_H
11#error "Never use <xtestintrin.h> directly; include <immintrin.h> instead."
12#endif
13
14#ifndef __XTESTINTRIN_H
15#define __XTESTINTRIN_H
16
17/* xtest returns non-zero if the instruction is executed within an RTM or active
18 * HLE region. */
19/* FIXME: This can be an either or for RTM/HLE. Deal with this when HLE is
20 * supported. */
21static __inline__ int
22 __attribute__((__always_inline__, __nodebug__, __target__("rtm")))
23 _xtest(void) {
24 return __builtin_ia32_xtest();
25}
26
27#endif
_Float16 __2f16 __attribute__((ext_vector_type(2)))
Zeroes the upper 128 bits (bits 255:128) of all YMM registers.