1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  /* { dg-skip-if "" { *-*-* } { "-march=i[45]86" } { "-O[sz]" } } */
       4  /* { dg-skip-if "" { *-*-* } { "-march=pentium" } { "-O[sz]" } } */
       5  /* { dg-skip-if "" { *-*-* } { "-mtune=i[45]86" } { "-O[sz]" } } */
       6  /* { dg-skip-if "" { *-*-* } { "-mtune=pentium" } { "-O[sz]" } } */
       7  
       8  union Data { char a; short b; };
       9  
      10  char c;
      11  
      12  void val(void) {
      13    __asm__ __volatile__ ("" : : "r" ((union Data) { c } )); } 
      14  
      15  /* { dg-final { scan-assembler "movzbl" } } */
      16  /* { dg-final { scan-assembler-not "xorl" } } */
      17  /* { dg-final { scan-assembler-not "movb" } } */