1/* Copyright (C) 2008-2020 Free Software Foundation, Inc. 2 3 This program is free software; you can redistribute it and/or modify 4 it under the terms of the GNU General Public License as published by 5 the Free Software Foundation; either version 3 of the License, or 6 (at your option) any later version. 7 8 This program is distributed in the hope that it will be useful, 9 but WITHOUT ANY WARRANTY; without even the implied warranty of 10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 GNU General Public License for more details. 12 13 You should have received a copy of the GNU General Public License 14 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 15 16/* This is only ever run if it is compiled with a new-enough GCC, but 17 we don't want the compilation to fail if compiled by some other 18 compiler. */ 19#ifdef __GNUC__ 20#define ATTR __attribute__((always_inline)) 21#else 22#define ATTR 23#endif 24 25int x, y; 26volatile int z = 0; 27volatile int result; 28volatile int *array_p; 29 30void bar(void); 31 32void 33init_array (int *array, int n) 34{ 35 int i; 36 for (i = 0; i < n; ++i) 37 array[i] = 0; 38} 39 40inline ATTR int func1(int arg1) 41{ 42 int array[64]; 43 init_array (array, 64); 44 array_p = array; 45 array[0] = result; 46 array[1] = arg1; 47 bar (); 48 return x * y + array_p[0] * arg1; 49} 50 51inline ATTR int func2(int arg2) 52{ 53 return x * func1 (arg2); 54} 55 56int main (void) 57{ 58 int val; 59 60 x = 7; 61 y = 8; 62 bar (); 63 64 val = func1 (result); 65 result = val; 66 67 val = func2 (result); 68 result = val; 69 70 return 0; 71} 72