gcc/testsuite/gcc.target/i386/pr33524.c

   1 /* Test that the compiler properly optimizes vector SI->DI conversions.  This
   2    was a bug in the initial SSE5 code.  */
   3
   4 /* { dg-do compile } */
   5 /* { dg-require-effective-target lp64 } */
   6 /* { dg-options "-O2 -msse5 -ftree-vectorize" } */
   7
   8 typedef long long __m128i  __attribute__ ((__vector_size__ (16), __may_alias__));
   9
  10 #define SIZE 10240
  11 union {
  12   signed   int   si[SIZE];
  13   signed   long  sl[SIZE];
  14   __m128i        align;
  15 } a, b;
  16
  17 void conv_sign_int_sign_long (void)
  18 {
  19   int i;
  20
  21   for (i = 0; i < SIZE; i++)
  22     a.sl[i] = b.si[i];
  23 }
  24
  25 /* { dg-final { scan-assembler "pperm" } } */