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 ilp32 } */
   6 /* { dg-skip-if "" { i?86-*-* x86_64-*-* } { "-march=*" } { "-march=i386" } } */
   7 /* { dg-options "-O3 -ftree-vectorize -march=i386" } */
   8 /* { dg-final { scan-assembler "addps\[ \t\]" } } */
   9 /* { dg-final { scan-assembler "fsubs\[ \t\]" } } */
  10
  11 #ifndef SIZE
  12 #define SIZE 1024
  13 #endif
  14
  15 float a[SIZE] __attribute__((__aligned__(16)));
  16 float b[SIZE] __attribute__((__aligned__(16)));
  17 float c[SIZE] __attribute__((__aligned__(16)));
  18
  19 void sse_addnums (void) __attribute__ ((__target__ ("sse2")));
  20
  21 void
  22 sse_addnums (void)
  23 {
  24   int i = 0;
  25   for (; i < SIZE; ++i)
  26     a[i] = b[i] + c[i];
  27 }
  28
  29 void
  30 i387_subnums (void)
  31 {
  32   int i = 0;
  33   for (; i < SIZE; ++i)
  34     a[i] = b[i] - c[i];
  35 }