[Bug tree-optimization/16803] PowerPC - invariant code motion could be removed from loop.

[nathan at gcc dot gnu dot org]

------- Additional Comments From nathan at gcc dot gnu dot org  2004-11-11 17:40 -------
FSF HEAD 2004-11-11 gives better code, with the invariants moved out of the loop,
.main:
        ld 9,.LC1@toc(2)
        lwz 11,0(9)
        addi 11,11,20
        extsw 11,11
        cmpwi 7,11,0
        blt 7,.L2
        ld 9,.LC2@toc(2)
        li 10,0
        li 7,0
        ld 8,0(9)
        .align 4
.L4:
        addi 0,10,1
        sldi 9,10,1
        extsw 10,0
        sthx 7,9,8
        cmpw 7,11,10
        bge 7,.L4
.L2:
        li 3,0
        blr

but this has 6 insns in the loop instead of 5.  Investigating ...

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |nathan at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16803