gcc/testsuite/gcc.dg/vect/costmodel/riscv/rvv/dynamic-lmul4-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-march=rv32gcv -mabi=ilp32 -O3 -ftree-vectorize --param riscv-autovec-lmul=dynamic -fdump-tree-vect-details" } */
   3
   4 #include <stdint-gcc.h>
   5
   6 void foo2 (int16_t *__restrict a,
   7           int32_t *__restrict b,
   8           int32_t *__restrict c,
   9           int32_t *__restrict a2,
  10           int32_t *__restrict b2,
  11           int32_t *__restrict c2,
  12           int32_t *__restrict a3,
  13           int32_t *__restrict b3,
  14           int32_t *__restrict c3,
  15           int32_t *__restrict a4,
  16           int32_t *__restrict b4,
  17           int32_t *__restrict c4,
  18           int16_t *__restrict a5,
  19           int32_t *__restrict b5,
  20           int32_t *__restrict c5,
  21           int n)
  22 {
  23     for (int i = 0; i < n; i++){
  24       a[i] = b[i] + c[i];
  25       b5[i] = b[i] + c[i];
  26       a2[i] = b2[i] + c2[i];
  27       a3[i] = b3[i] + c3[i];
  28       a4[i] = b4[i] + c4[i];
  29       a5[i] = a[i] + a4[i];
  30       a[i] = a5[i] + b5[i]+ a[i];
  31
  32       a[i] = a[i] + c[i];
  33       b5[i] = a[i] + c[i];
  34       a2[i] = a[i] + c2[i];
  35       a3[i] = a[i] + c3[i];
  36       a4[i] = a[i] + c4[i];
  37       a5[i] = a[i] + a4[i];
  38       a[i] = a[i] + b5[i]+ a[i];
  39     }
  40 }
  41
  42 /* { dg-final { scan-assembler {e16,m2} } } */
  43 /* { dg-final { scan-assembler-not {csrr} } } */
  44 /* { dg-final { scan-tree-dump-times "Preferring smaller LMUL loop because it has unexpected spills" 1 "vect" } } */