[Bug ipa/120044] [12/13/14/15/16 Regression] wrong code at -O1 and above with "-fno-early-inlining -fno-tree-fre -fno-tree-pre -fno-code-hoisting" on x86_64-linux-gnu

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120044

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org,
                   |                            |jamborm at gcc dot gnu.org
           Priority|P3                          |P2

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks like IPA CP + SRA and the resulting replacements during inlining end up
writing to the const 'c' somehow:

int main ()
{
  struct a e;
  const int g$b;
  char _3;
  int _4;
  short unsigned int _5;
  int _6;

  <bb 2> [local count: 1073741824]:
  g$b_2 = 0;
  _3 = (char) g$b_2;
  _4 = (int) _3;
  c.b = g$b_2;
  e = c;