archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-22 03:54:33 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions

Browse source 
Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions.

Reviewed-by: never, rasbold
This commit is contained in:
Vladimir Kozlov 2008-05-21 13:46:23 -07:00
parent 757229db71
commit 76035424de
29 changed files with 428 additions and 128 deletions
Download patch file Download diff file Expand all files Collapse all files

1
hotspot/src/share/vm/opto/loopopts.cpp
View file

@ -464,6 +464,7 @@ Node *PhaseIdealLoop::conditional_move( Node *region ) {
case T_FLOAT:
case T_DOUBLE:
case T_ADDRESS: // (RawPtr)
case T_NARROWOOP:
cost++;
break;
case T_OBJECT: { // Base oops are OK, but not derived oops