[Bug ipa/72657] New: [7 regression][CHKP] internal compiler error: in ix86_expand_builtin

[ienkovich at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72657

            Bug ID: 72657
           Summary: [7 regression][CHKP] internal compiler error: in
                    ix86_expand_builtin
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ienkovich at gcc dot gnu.org
  Target Milestone: ---

Here is a reproducer:

>cat small.i
int a;
int *b;

static void __attribute__((noinline))
fn2 (const char *c)
{
  if (!c)
    __builtin_abort ();
}

static int *
fn1 ()
{
  if (a)
    fn2(__PRETTY_FUNCTION__);
  return 0;
}

int
main ()
{
  b = fn1();
  return a;
}
>gcc -O3 -flto -fcheck-pointer-bounds -mmpx -march=haswell small.i
small.i: In function 'main.chkp':
small.i:20:1: internal compiler error: in ix86_expand_builtin, at
config/i386/i386.c:41299
 main ()
 ^
...


Regression is caused by r238709.  Dump shows we don't inline call to
fn1 properly.  As a result we get

__bound_tmp.2_5 = __builtin_ia32_bndret (0B);

Which is invalid IL because we always expect SSA_NAME as an argument
of bndret call.