gcc/testsuite/gcc.dg/signbit-2.c

   1 /* { dg-do assemble } */
   2 /* { dg-options "-O3 --save-temps -fdump-tree-optimized" } */
   3
   4 /* This test does not work when the truth type does not match vector type.  */
   5 /* { dg-additional-options "-mno-avx512f" { target { i?86-*-* x86_64-*-* } } } */
   6 /* { dg-additional-options "-march=armv8-a" { target aarch64_sve } } */
   7
   8 #include <stdint.h>
   9
  10 void fun1(int32_t *x, int n)
  11 {
  12     for (int i = 0; i < (n & -16); i++)
  13       x[i] = (-x[i]) >> 31;
  14 }
  15
  16 void fun2(int32_t *x, int n)
  17 {
  18     for (int i = 0; i < (n & -16); i++)
  19       x[i] = (-x[i]) >> 30;
  20 }
  21
  22 /* { dg-final { scan-tree-dump {\s+>\s+\{ 0(, 0)+ \}} optimized { target vect_int } } } */
  23 /* { dg-final { scan-tree-dump {\s+>\s+0} optimized { target { ! vect_int } } } } */
  24 /* { dg-final { scan-tree-dump-not {\s+>>\s+31} optimized } } */