Re: Status of LJ_GC64 on x64?

  • From: Peter Cawley <corsix@xxxxxxxxxx>
  • To: luajit@xxxxxxxxxxxxx
  • Date: Wed, 29 Jul 2015 14:37:05 +0100

On Wed, Jul 29, 2015 at 1:32 PM, Mike Pall <mike-1507@xxxxxxxxxx> wrote:

The IR needs to be revamped (storing 64 bit consts inline)

Possibly the least invasive revamp would be for 64-bit consts to be
represented with three IR nodes: one node for the low 32-bits, one
node for the high 32-bits, and one node to combine the other two (or,
if these constants are only ever going to be 48 bits in practice, then
you could get away with two IR nodes: one with 32-bits, one with the
remaining 16-bits and a reference to the low node).

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