gcc/testsuite/gcc.target/i386/387-8.c

   1 /* Verify that 387 fptan instruction is generated. Also check that
   2    inherent load of 1.0 is used in further calculations.  */
   3
   4 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   5 /* { dg-require-effective-target ilp32 } */
   6 /* { dg-options "-O2 -ffast-math -march=i686" } */
   7 /* { dg-final { scan-assembler "fptan" } } */
   8 /* { dg-final { scan-assembler-not "fld1" } } */
   9
  10 extern double tan (double);
  11
  12 double f1(double x)
  13 {
  14   return 1.0 / tan(x);
  15 }
  16