| /* { dg-do compile } */ |
| /* { dg-options "-O2" } */ |
| |
| #include <stdbool.h> |
| |
| bool my_uadd_overflow (unsigned char a, unsigned char b, unsigned char *res) |
| { |
| return __builtin_add_overflow (a, b, res); |
| } |
| |
| bool my_usub_overflow (unsigned char a, unsigned char b, unsigned char *res) |
| { |
| return __builtin_sub_overflow (a, b, res); |
| } |
| |
| bool my_uneg_overflow (unsigned char a, unsigned char *res) |
| { |
| return __builtin_sub_overflow (0, a, res); |
| } |
| |
| bool my_add_overflow (signed char a, signed char b, signed char *res) |
| { |
| return __builtin_add_overflow (a, b, res); |
| } |
| |
| bool my_sub_overflow (signed char a, signed char b, signed char *res) |
| { |
| return __builtin_sub_overflow (a, b, res); |
| } |
| |
| bool my_neg_overflow (signed char a, signed char *res) |
| { |
| return __builtin_sub_overflow (0, a, res); |
| } |
| |
| /* { dg-final { scan-assembler-times "add.b" 2 } } */ |
| /* { dg-final { scan-assembler-times "sub.b" 4 } } */ |
| /* { dg-final { scan-assembler-not "cmp.b" } } */ |