1// { dg-do compile { target i?86-*-* x86_64-*-* } } 2// { dg-options "-std=gnu++11 -g0 -fno-exceptions -fno-asynchronous-unwind-tables" } 3// { dg-options "-std=gnu++11 -g0 -fno-exceptions -fno-asynchronous-unwind-tables -march=i486" { target ia32 } } 4// { dg-final { scan-assembler-times "xacquire\|\.byte\[^\n\r]*0xf2" 14 } } 5// { dg-final { scan-assembler-times "xrelease\|\.byte\[^\n\r]*0xf3" 14 } } 6 7// Copyright (C) 2008-2015 Free Software Foundation, Inc. 8// 9// This file is part of the GNU ISO C++ Library. This library is free 10// software; you can redistribute it and/or modify it under the 11// terms of the GNU General Public License as published by the 12// Free Software Foundation; either version 3, or (at your option) 13// any later version. 14 15// This library is distributed in the hope that it will be useful, 16// but WITHOUT ANY WARRANTY; without even the implied warranty of 17// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18// GNU General Public License for more details. 19 20// You should have received a copy of the GNU General Public License along 21// with this library; see the file COPYING3. If not see 22// <http://www.gnu.org/licenses/>. 23 24#include <atomic> 25 26#define ACQ memory_order_acquire | __memory_order_hle_acquire 27#define REL memory_order_release | __memory_order_hle_release 28 29int main() 30{ 31 unsigned zero, one; 32 using namespace std; 33 atomic_flag af = ATOMIC_FLAG_INIT; 34 35 if (!af.test_and_set(ACQ)) 36 af.clear(REL); 37 38 atomic_uint au = ATOMIC_VAR_INIT(0); 39 40 if (au.exchange(1, ACQ)) 41 au.store(0, REL); 42 43 if (au.exchange(1, ACQ)) 44 au.exchange(0, REL); 45 46 zero = 0; 47 one = 1; 48 if (au.compare_exchange_weak(zero, 1, ACQ, memory_order_consume)) 49 au.compare_exchange_weak(one, 0, REL, memory_order_consume); 50 51 zero = 0; 52 one = 1; 53 if (au.compare_exchange_strong(zero, 1, ACQ, memory_order_consume)) 54 au.compare_exchange_strong(one, 0, REL, memory_order_consume); 55 56 if (!au.fetch_add(1, ACQ)) 57 au.fetch_add(-1, REL); 58 59 if (!au.fetch_sub(1, ACQ)) 60 au.fetch_sub(-1, REL); 61 62#if 0 /* broken in underlying target */ 63 if (!au.fetch_and(1, ACQ)) 64 au.fetch_and(-1, REL); 65 66 if (!au.fetch_or(1, ACQ)) 67 au.fetch_or(-1, REL); 68 69 if (!au.fetch_xor(1, ACQ)) 70 au.fetch_xor(-1, REL); 71 72 if (!au.fetch_nand(1, ACQ)) 73 au.fetch_nand(-1, REL); 74#endif 75 76 volatile atomic_flag vaf = ATOMIC_FLAG_INIT; 77 78 if (!vaf.test_and_set(ACQ)) 79 vaf.clear(REL); 80 81 volatile atomic_uint vau = ATOMIC_VAR_INIT(0); 82 83 if (!vau.exchange(1, ACQ)) 84 vau.store(0, REL); 85 86 if (!vau.exchange(1, ACQ)) 87 vau.exchange(0, REL); 88 89 zero = 0; 90 one = 1; 91 if (vau.compare_exchange_weak(zero, 1, ACQ, memory_order_consume)) 92 vau.compare_exchange_weak(one, 0, REL, memory_order_consume); 93 94 zero = 0; 95 one = 1; 96 if (vau.compare_exchange_strong(zero, 1, ACQ, memory_order_consume)) 97 vau.compare_exchange_strong(one, 0, REL, memory_order_consume); 98 99 if (!vau.fetch_add(1, ACQ)) 100 vau.fetch_add(-1, REL); 101 102 if (!vau.fetch_sub(1, ACQ)) 103 vau.fetch_sub(-1, REL); 104 105#if 0 /* broken in underlying target */ 106 107 if (!vau.fetch_and(1, ACQ)) 108 vau.fetch_and(-1, REL); 109 110 if (!vau.fetch_or(1, ACQ)) 111 vau.fetch_or(-1, REL); 112 113 if (!vau.fetch_xor(1, ACQ)) 114 vau.fetch_xor(-1, REL); 115 116 if (!vau.fetch_nand(1, ACQ)) 117 vau.fetch_nand(-1, REL); 118#endif 119 120 return 0; 121} 122