I suppose there is no easy way to do that, but one can scan all places where
#ifdef _EM64T_ appears and change appropriate places to something like #ifdef _COMPRESSED_MODE. Plus scan such places like gc_types.h in gc_cc, there is object header: VT32 vt_raw; unsigned info; You need to have VT64 vt_raw; for 64 bit mode. p.s. In some of discussions I read that compressed mode (comparing to uncompressed one) improved performance on about 13% on em64t. On 2/2/07, Xiao-Feng Li <[EMAIL PROTECTED]> wrote:
Yes, that's exactly my question. I couldn't find an easy way to turn off this compressed-ptr optimization. It's a little bit surprising me. :-) Thanks, xiaofeng On 2/2/07, Aleksey Ignatenko <[EMAIL PROTECTED]> wrote: > Did you check that it works on 64 bit mode with uncomressed references. > I remember some time ago there were issues like hard coded compressed > references used in JIT (or probably somewhere else) in 64bit mode. > > Best regards, > Aleksey. > > On 2/2/07, Xiao-Feng Li <[EMAIL PROTECTED]> wrote: > > > > Hi, current 64bit support uses compressed reference pointer by > > default, i.e., a 64bit reference is stored as a 32bit value plus a > > (global) base address. This can reduce the footprint of working set > > and at the same time improve cache locality. But this has max heap > > size limitation. > > > > I wonder why not use non-compressed pointer as by default, and the > > compressed pointer is only an optimization that can be applied when > > desirable. Comments? > > > > Thanks, > > xiaofeng > > > >
