Re: Broken test gcc.target/i386/sibcall-2.c

[Alexander Monakov]

Ah.  I realize it's most likely for testing sibcall_[value]_pop_memory
peepholes, right?  In which case the testcase might look like this:

  /* { dg-do compile } */
  /* { dg-options "-O2" } */

  void foo (int a, void (**doo1) (void), void (**doo2) (void))
  {
    char s[16] = {0};
    do s[a] = 1; while (a &= a-1);
    (*(s[8] ? doo1 : doo2)) ();
  }

  /* { dg-final { scan-assembler-not "call" } } */

However on the above testcase memory-indirect jump is currently generated only
for 64-bit x86.  With -mx32 it's impossible, but with -m32 the peephole
doesn't match.  Is that expected?

Can you also tell me why ..._pop call and sibcall instructions are predicated
on !TARGET_64BIT?

Thanks.

Alexander