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Date: Tue, 16 Nov 2021 09:47:58 +0100
From: Jan Hubicka <hubicka@kam.mff.cuni.cz>
To: "hubicka at kam dot mff.cuni.cz" <gcc-bugzilla@gcc.gnu.org>
Cc: gcc-bugs@gcc.gnu.org
Subject: Re: [Bug ipa/103267] Wrong code with ipa-sra
Message-ID: <20211116084758.GB72251@kam.mff.cuni.cz>
References: <bug-103267-4@http.gcc.gnu.org/bugzilla/>
 <bug-103267-4-Wr8Sbx3IRF@http.gcc.gnu.org/bugzilla/>
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Aha, but here is better example (reproduces same way).
In the former one I forgot const attribute which makes it invalid.
The testcase tests that ipa-sra is missing ECF_LOOPING_CONST_OR_PURE
check

static int
__attribute__ ((noinline))
infinite (int p)
{
  if (p)
    while (1);
  return p;
}
__attribute__ ((noinline))
static void
test(int p, int *a)
{
  int v = infinite (p);
  if (*a && v)
    __builtin_abort ();
}
test2(int *a)
{
  test(0,a);
}
main()
{
  test (1,0);
}