[Bug tree-optimization/65773] [5 Regression] GCC 5.1 miscompiles LLVM function AArch64InstrInfo::loadRegFromStackSlot()

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65773

--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> So, the source in question is:
>   const MachineInstrBuilder &MI = BuildMI(MBB, MBBI, DL, get(Opc))
>                                       .addReg(DestReg, getDefRegState(true))
>                                       .addFrameIndex(FI);
>  

The way to fix llvm' sources is do to:

const MachineInstrBuilder &MI = BuildMI(MBB, MBBI, DL, get(Opc));
MI.addReg(DestReg, getDefRegState(true)).addFrameIndex(FI);

Which allows for the return value of buildmi to expand its life time past the
end of the statement.