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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/106075] New: Wrong DSE with -fnon-call-exceptions
Date: Fri, 24 Jun 2022 09:34:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106075

            Bug ID: 106075
           Summary: Wrong DSE with -fnon-call-exceptions
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hubicka at gcc dot gnu.org
  Target Milestone: ---

In the following testcase:

int a =3D 1;
short *b;
void
test()
{
        a=3D12345;
        *b=3D0;
        a=3D1;
}

we should not optimize out a=3D12345 when compiling with -fnon-call-excepti=
ons.=20
The store to b may throw and thus the store is live.=