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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/110422] New: asm goto vs SRA
Date: Tue, 27 Jun 2023 00:02:59 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110422

            Bug ID: 110422
           Summary: asm goto vs SRA
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Testcase from originally from PR 103979:

```
struct S { char a[64]; };

int
foo (void)
{
  struct S s, t;
  asm goto ("" : "=3Dg" (s) : : : l);
  t =3D s;
  asm goto ("" : "=3Dg" (s) : : : l);
  return s.a[0] + t.a[63];
l:
  return -1;
}
```

This is not related to asm goto not being volatile but rather SRA (just like
complex lowering, PR 105165) does not know how to handle `asm goto` with
outputs.=