gcc/testsuite/gcc.target/aarch64/sve/var_stride_2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ftree-vectorize" } */
   3
   4 #define TYPE int
   5 #define SIZE 257
   6
   7 void __attribute__ ((weak))
   8 f (TYPE *x, TYPE *y, unsigned short n, unsigned short m)
   9 {
  10   for (int i = 0; i < SIZE; ++i)
  11     x[i * n] += y[i * m];
  12 }
  13
  14 /* { dg-final { scan-assembler {\tld1w\tz[0-9]+} } } */
  15 /* { dg-final { scan-assembler {\tst1w\tz[0-9]+} } } */
  16 /* { dg-final { scan-assembler {\tldr\tw[0-9]+} } } */
  17 /* { dg-final { scan-assembler {\tstr\tw[0-9]+} } } */
  18 /* Should multiply by (257-1)*4 rather than (VF-1)*4.  */
  19 /* { dg-final { scan-assembler-times {\tadd\tx[0-9]+, x[0-9]+, x[0-9]+, lsl 10\n} 2 } } */
  20 /* { dg-final { scan-assembler-not {\tcmp\tx[0-9]+, 0} } } */
  21 /* { dg-final { scan-assembler-not {\tcmp\tw[0-9]+, 0} } } */
  22 /* { dg-final { scan-assembler-not {\tcsel\tx[0-9]+} } } */
  23 /* Two range checks and a check for n being zero.  (m being zero is OK.)  */
  24 /* { dg-final { scan-assembler-times {\tcmp\t} 1 } } */
  25 /* { dg-final { scan-assembler-times {\tccmp\t} 2 } } */