[Bug target/32826] Reduction into a global variable causes a Load Hit Store Hazard (for the Cell)

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32826

Segher Boessenkool <segher at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-03-29
                 CC|                            |segher at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
It generates different code now, but still a LHS:

        vxor 0,0,0
        li 10,16
        lis 9,e@ha
        vsldoi 13,1,0,8
        vadduwm 1,1,13
        vsldoi 0,1,0,4
        vadduwm 1,1,0
        stvx 1,1,10
        lwz 10,16(1)
        addi 1,1,32
        stw 10,e@l(9)

(-m32 -mcpu=cell, but similar with different cpus or -m64).