|  | /* Copyright (C) 2008-2021 Free Software Foundation, Inc. | 
|  |  | 
|  | This program is free software; you can redistribute it and/or modify | 
|  | it under the terms of the GNU General Public License as published by | 
|  | the Free Software Foundation; either version 3 of the License, or | 
|  | (at your option) any later version. | 
|  |  | 
|  | This program is distributed in the hope that it will be useful, | 
|  | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
|  | GNU General Public License for more details. | 
|  |  | 
|  | You should have received a copy of the GNU General Public License | 
|  | along with this program.  If not, see <http://www.gnu.org/licenses/>.  */ | 
|  |  | 
|  | /* This is only ever run if it is compiled with a new-enough GCC, but | 
|  | we don't want the compilation to fail if compiled by some other | 
|  | compiler.  */ | 
|  | #ifdef __GNUC__ | 
|  | #define ATTR __attribute__((always_inline)) | 
|  | #else | 
|  | #define ATTR | 
|  | #endif | 
|  |  | 
|  | int x, y; | 
|  | volatile int z = 0; | 
|  | volatile int result; | 
|  | volatile int *array_p; | 
|  |  | 
|  | void bar(void); | 
|  |  | 
|  | void | 
|  | init_array (int *array, int n) | 
|  | { | 
|  | int i; | 
|  | for (i = 0; i < n; ++i) | 
|  | array[i] = 0; | 
|  | } | 
|  |  | 
|  | inline ATTR int func1(int arg1) | 
|  | { | 
|  | int array[64]; | 
|  | init_array (array, 64); | 
|  | array_p = array; | 
|  | array[0] = result; | 
|  | array[1] = arg1; | 
|  | bar (); | 
|  | return x * y + array_p[0] * arg1; | 
|  | } | 
|  |  | 
|  | inline ATTR int func2(int arg2) | 
|  | { | 
|  | return x * func1 (arg2); | 
|  | } | 
|  |  | 
|  | inline ATTR | 
|  | void | 
|  | scoped (int s) | 
|  | { | 
|  | int loc1 = 10; | 
|  | if (s > 0) | 
|  | { | 
|  | int loc2 = 20; | 
|  | s++; /* bp for locals 1 */ | 
|  | if (s > 1) | 
|  | { | 
|  | int loc3 = 30; | 
|  | s++; /* bp for locals 2 */ | 
|  | } | 
|  | } | 
|  | s++; /* bp for locals 3 */ | 
|  | } | 
|  |  | 
|  | int main (void) | 
|  | { | 
|  | int val; | 
|  |  | 
|  | x = 7; | 
|  | y = 8; | 
|  | bar (); | 
|  |  | 
|  | val = func1 (result); | 
|  | result = val; | 
|  |  | 
|  | val = func2 (result); | 
|  | result = val; | 
|  |  | 
|  | scoped (40); | 
|  |  | 
|  | return 0; | 
|  | } |