> Below is one patch, more in the spirit of
> https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00418.html
> where we refuse to add REG_EQUAL note in that case.
>
> Attached is another variant, which keeps it around just in case something
> would make use of it, but makes sure we don't fwprop into
Hi!
The following testcase is miscompiled on powerpc64le-linux.
As mentioned in the PR, the problem is with a REG_EQUAL note which
expand_mult_const attaches to:
(insn 17 16 18 2 (set (reg:SI 140)
(plus:SI (subreg:SI (reg:HI 138) 0)
(subreg:SI (reg:HI 136) 0)))
