[PATCH] [AArch64] MachO large code-model: Materialize FP constants in code.

[Juergen Ributzka]

Committed in r223941.

Thanks Tim

> On Dec 10, 2014, at 11:27 AM, Tim Northover <t.p.northover at gmail.com> wrote:
> 
> Hi Juergen,
> 
> On 10 December 2014 at 11:13, Juergen Ributzka <juergen at apple.com> wrote:
>> I attached an updated patch, which is now much simpler.
> 
> Excellent. Just one comment on the updated patch. It seems fine otherwise:
> 
> +    unsigned Opc2 = Is64Bit ? AArch64::FMOVXDr : AArch64::FMOVWSr;
> +    unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT));
> +    BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc2), ResultReg)
> +        .addReg(TmpReg, getKillRegState(true));
> 
> This bit of FastISel can just emit a generic COPY node, it'll be
> handled by copyPhysReg, and might even be elided in some slightly
> weird situations.
> 
> Cheers.
> 
> Tim.