/* { dg-do compile } */ /* { dg-options "-O2 -mavx2 -ftree-vectorize -fvect-cost-model=unlimited -fdump-tree-vect-details -mprefer-vector-width=256" } */ /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 6 "vect" } } */ #define N 10000 void __attribute__((noipa)) foo_shl (int* a, int b) { for (int i = 0; i != N; i++) { a[i] = b; b <<= 1; } } void __attribute__((noipa)) foo_ashr (int* a, int b) { for (int i = 0; i != N; i++) { a[i] = b; b >>= 1; } } void __attribute__((noipa)) foo_lshr (unsigned int* a, unsigned int b) { for (int i = 0; i != N; i++) { a[i] = b; b >>= 1U; } } void __attribute__((noipa)) foo_shl_peel (int* a, int b) { for (int i = 0; i != 39; i++) { a[i] = b; b <<= 1; } } void __attribute__((noipa)) foo_ashr_peel (int* a, int b) { for (int i = 0; i != 39; i++) { a[i] = b; b >>= 1; } } void __attribute__((noipa)) foo_lshr_peel (unsigned int* a, unsigned int b) { for (int i = 0; i != 39; i++) { a[i] = b; b >>= 1U; } }