Yes, we should be able to work with the lower range.
 
----- Original message -----
From: Karen Kinnear <[email protected]>
To: Bjorn B Vardal <[email protected]>
Cc: [email protected]
Subject: Re: MVT change in new opcode numbers?
Date: Thu, Jul 27, 2017 3:10 PM
 
Sigh - it does matter to us where it starts - we do quickening internally using the higher ranges and our code knows about
ranges for “real” java byte codes vs internal byte codes.
 
If it is possible we would appreciate the lower numbers since the higher numbers would slow down our range checking.
 
thanks,
Karen
 
On Jul 27, 2017, at 2:09 PM, Bjorn B Vardal <[email protected]> wrote:
 
If you want to make it contiguous, does it matter to you (HotSpot) where it starts? If not, the most practical for us would be 217-225. If that doesn't work, I believe we'll be able to work with 203-211.
 
----- Original message -----
From: Karen Kinnear <[email protected]>
Sent by: "valhalla-spec-experts" <[email protected]>
To: [email protected]
Cc:
Subject: MVT change in new opcode numbers?
Date: Thu, Jul 27, 2017 1:38 PM
 
Dan Smith, Bjorn, Dan H, Remi -
 
Does it work for you if we change the JVMS to use the following value-type byte codes - i.e.
make them contiguous?
In the hotspot implementation, we ran out of internally-usable byte codes when we left holes here.
 
         _vload                = 203, // 0xcb
 248     _vstore               = 204, // 0xcc
 249     _vaload               = 205, // 0xcd
 250     _vastore              = 206, // 0xce
 251     _vreturn              = 207, // 0xcf
 252     _vdefault             = 208, // 0xd0
 253     _vwithfield           = 209, // 0xd1
 254     _vbox                 = 210, // 0xd2
 255     _vunbox               = 211, // 0xd3
(note: we removed vgetfield)
 
thanks,
Karen
 
 

Reply via email to