[Bug tree-optimization/26258] [4.1 Regression] Wrong alias information for SRAed struct copy

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2006-02-13 15:31 -------
C testcase that fails (the PHI <&first, &last> is the important part):

typedef struct { int a; int b; } Foo;

Foo foo(Foo p, _Bool ret_first)
{
  Foo first = p;
  Foo last = p;
  Foo *q;
  q = ret_first ? &first : &last;
  return *q;
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26258