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 #define REGISTER "0"
   9 #endif
  10
  11 static inline int source(void)
  12 {
  13   register int hardreg __asm__(REGISTER);
  14   asm("" : "=r"(hardreg));
  15   return hardreg;
  16 }
  17
  18 void test(void)
  19 {
  20   int t = source();
  21   foo(t);
  22   bar(t);
  23 }
  24
  25 /* Hardreg should appear exactly 3 times -- declaration, asm stmt,
  26    and copy out.  */
  27 /* { dg-final { scan-tree-dump-times "hardreg" 3 "optimized" } } */
  28
  29 /* In particular, hardreg should *not* appear in the call to bar.  */
  30 /* { dg-final { scan-tree-dump-times "bar \[(\]t\[)\]" 1 "optimized" } } */
  31
  32 /* { dg-final { cleanup-tree-dump "optimized" } } */