gcc/testsuite/gcc.dg/tree-ssa/asm-3.c

   1 /* PR 17739 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4
   5 #ifdef __hppa__
   6 #define REGISTER "1"
   7 #else
   8 #ifdef __moxie__
   9 #define REGISTER "8"
  10 #else
  11 #define REGISTER "0"
  12 #endif
  13 #endif
  14
  15 static inline int source(void)
  16 {
  17   register int hardreg __asm__(REGISTER);
  18   asm("" : "=r"(hardreg));
  19   return hardreg;
  20 }
  21
  22 void test(void)
  23 {
  24   int t = source();
  25   foo(t);
  26   bar(t);
  27 }
  28
  29 /* Hardreg should appear exactly 3 times -- declaration, asm stmt,
  30    and copy out.  */
  31 /* { dg-final { scan-tree-dump-times "hardreg" 3 "optimized" } } */
  32
  33 /* In particular, hardreg should *not* appear in the call to bar.  */
  34 /* { dg-final { scan-tree-dump-times "bar \[(\]t_.\[)\]" 1 "optimized" } } */
  35
  36 /* { dg-final { cleanup-tree-dump "optimized" } } */