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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/103676] [10/11/12 Regression] internal compiler error:
 in extract_constrain_insn, at recog.c:2671
Date: Tue, 14 Dec 2021 02:07:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103676

--- Comment #16 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is the most reduced testcase, I could make it:
typedef unsigned long long uint64_t;
struct timer {
 int active;
 uint64_t expire;
 void *arg;
};
int irq_disable();
void irq_restore(int);
static inline uint64_t h(const  uint64_t *p64)
{
 uint64_t tmp;
 asm(
  "ldrd %Q[r], %R[r], %[p]\n"
  : [r]"=3Dlh"(tmp)
  : [p]"m"(*p64)
  : "memory"
 );
 return tmp;
}
uint64_t monotonic;
void timer_callout(timer *tmr, uint64_t nsec, void *arg)
{
 const int s =3D irq_disable();
 if (tmr->active)
   tmr->arg =3D arg;
 tmr->expire =3D h(&monotonic) + 100000 + (nsec =3D=3D 1 ? 0 : nsec);
 irq_restore(s);
}=