gcc/testsuite/gcc.target/i386/xop-shift1-vector.c

   1 /* Test that the compiler properly optimizes vector shift instructions into
   2    psha/pshl on XOP systems.  */
   3
   4 /* { dg-do compile { target { ! { ia32 } } } } */
   5 /* { dg-options "-O2 -mxop -mno-avx2 -ftree-vectorize" } */
   6
   7 extern void exit (int);
   8
   9 typedef long __m128i  __attribute__ ((__vector_size__ (16), __may_alias__));
  10
  11 #define SIZE 10240
  12
  13 union {
  14   __m128i i_align;
  15   int i32[SIZE];
  16   unsigned u32[SIZE];
  17 } a, b, c;
  18
  19 void
  20 left_shift32 (void)
  21 {
  22   int i;
  23
  24   for (i = 0; i < SIZE; i++)
  25     a.i32[i] = b.i32[i] << c.i32[i];
  26 }
  27
  28 int main ()
  29 {
  30   left_shift32 ();
  31   exit (0);
  32 }
  33
  34 /* { dg-final { scan-assembler "vpshad" } } */