gcc/testsuite/gcc.target/s390/larl-1.c

   1 /* Check if load-address-relative instructions are created */
   2
   3 /* { dg-do compile { target { s390*-*-* } } } */
   4 /* { dg-options "-O2 -march=z10 -mzarch -fno-section-anchors" } */
   5
   6 /* An explicitely misaligned symbol.  This symbol is NOT aligned as
   7    mandated by our ABI.  However, the back-end needs to handle that in
   8    order to make things like __attribute__((packed)) work.  The symbol
   9    address is expected to be loaded from literal pool.  */
  10 /* { dg-final { scan-assembler "lgrl\t%r2," { target { lp64 } } } } */
  11 /* { dg-final { scan-assembler "lrl\t%r2," { target { ! lp64 } } } } */
  12 extern char align1 __attribute__((aligned(1)));
  13
  14 /* { dg-final { scan-assembler "larl\t%r2,align2" } } */
  15 extern char align2 __attribute__((aligned(2)));
  16
  17 /* { dg-final { scan-assembler "larl\t%r2,align4" } } */
  18 extern char align4 __attribute__((aligned(4)));
  19
  20 /* An external char symbol without explicit alignment has a DECL_ALIGN
  21    of just 8. In contrast to local definitions DATA_ABI_ALIGNMENT is
  22    NOT applied to DECL_ALIGN in that case.  Make sure the backend
  23    still assumes this symbol to be aligned according to ABI
  24    requirements.  */
  25 /* { dg-final { scan-assembler "larl\t%r2,align_default" } } */
  26 extern char align_default;
  27
  28 char * foo1 () { return &align1; }
  29 char * foo2 () { return &align2; }
  30 char * foo3 () { return &align4; }
  31 char * foo4 () { return &align_default; }
  32