| /* PR tree-optimization/108692 */ |
| /* { dg-do compile } */ |
| /* { dg-options "-O2 -ftree-vectorize" } */ |
| |
| __attribute__((noipa)) int |
| foo (signed char *x, signed char *y, int n) |
| { |
| int i, r = 0; |
| signed char a, b; |
| for (i = 0; i < n; i++) |
| { |
| a = x[i]; |
| b = y[i]; |
| int c = (unsigned char) a - (unsigned char) b; |
| r = r + (c < 0 ? -c : c); |
| } |
| return r; |
| } |
| |
| int |
| main () |
| { |
| signed char x[64] = {}, y[64] = {}; |
| if (__CHAR_BIT__ != 8 || __SIZEOF_INT__ != 4) |
| return 0; |
| x[32] = -128; |
| y[32] = 1; |
| if (foo (x, y, 64) != 127) |
| __builtin_abort (); |
| return 0; |
| } |