[Bug target/111231] [12/13/14 regression] armhf: Miscompilation with -O2/-fno-exceptions level (-fno-tree-vectorize is working)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111231

--- Comment #25 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think it's more interesting why

* 119: [r216:SI (2 MEM[(struct Vec128<short int, 8> *)_179]+0 S4 A64)] =
{r0:SI..r3:SI}

isn't considered as dependence?  Why does the earlier insn even come into
play?  What's the breaking transform?  I guess insn 119 and 120 are
exchanged?