gcc/testsuite/gcc.target/i386/pr15184-2.c

   1 /* PR 15184 second two tests
   2 /* { dg-do compile { target ia32 } } */
   3 /* { dg-options "-O2 -march=pentiumpro" } */
   4
   5 #define regparm __attribute__((__regparm__(1)))
   6
   7 extern unsigned short y;
   8
   9 void regparm g0(unsigned char c)
  10 {
  11         y = (y & 0xFF00) | (unsigned short)c;
  12 }
  13
  14 void regparm g1(unsigned char c)
  15 {
  16         y = (y & 0x00FF) | ((unsigned short)c << 8);
  17 }
  18
  19 /* Each function should compile down to a byte move from
  20    the input register into y, possibly at an offset within y.  */
  21 /* { dg-final { scan-assembler-times "movb\[ \\t\]+%al" 2 } } */
  22