[Bug rtl-optimization/120182] Incorrect code with -O3 and constant addresses

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120182

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
In fact it's the gid assignment:

**scanning insn=17
  mem: (const_int 2654208 [0x288000])

   after canon_rtx address: (const_int 2654208 [0x288000])
  gid=1 offset=0
 processing const base store gid=1[0..1)
mems_found = 1, cannot_delete = false

**scanning insn=19
  mem: (const_int 2654209 [0x288001])

   after canon_rtx address: (const_int 2654209 [0x288001])
  gid=2 offset=0
 processing const base store gid=2[0..1)

...

**scanning insn=33
  mem: (const_int 2654208 [0x288000])

   after canon_rtx address: (const_int 2654208 [0x288000])
  gid=1 offset=0
 processing const load gid=1[0..8)
removing from active insn=17 has store
mems_found = 0, cannot_delete = true