gcc/testsuite/gcc.target/i386/funcspec-1.c

   1 /* Test whether using target specific options, we can generate SSE2 code on
   2    32-bit, which does not generate SSE2 by default, but still generate 387 code
   3    for a function that doesn't use attribute((option)).  */
   4 /* { dg-do compile } */
   5 /* { dg-require-effective-target ia32 } */
   6 /* { dg-options "-O3 -ftree-vectorize -mno-sse" } */
   7
   8 #ifndef SIZE
   9 #define SIZE 1024
  10 #endif
  11
  12 float a[SIZE] __attribute__((__aligned__(16)));
  13 float b[SIZE] __attribute__((__aligned__(16)));
  14 float c[SIZE] __attribute__((__aligned__(16)));
  15
  16 void sse_addnums (void) __attribute__ ((__target__ ("sse2")));
  17
  18 void
  19 sse_addnums (void)
  20 {
  21   int i = 0;
  22   for (; i < SIZE; ++i)
  23     a[i] = b[i] + c[i];
  24 }
  25
  26 void
  27 i387_subnums (void)
  28 {
  29   int i = 0;
  30   for (; i < SIZE; ++i)
  31     a[i] = b[i] - c[i];
  32 }
  33
  34 /* { dg-final { scan-assembler "addps\[ \t\]" } } */
  35 /* { dg-final { scan-assembler "fsubs\[ \t\]" } } */