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diff src/share/vm/opto/connode.cpp @ 1575:3657cb01ffc5

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6954029: Improve implicit null check generation with compressed oops Summary: Hoist DecodeN instruction above null check Reviewed-by: never, twisti
author kvn
date Wed, 02 Jun 2010 09:49:32 -0700
parents ddd6f1182ae3
children e9ff18c4ace7
line wrap: on
line diff
--- a/src/share/vm/opto/connode.cpp	Sat May 29 19:22:32 2010 -0700
+++ b/src/share/vm/opto/connode.cpp	Wed Jun 02 09:49:32 2010 -0700
@@ -437,7 +437,7 @@
 // If not converting int->oop, throw away cast after constant propagation
 Node *CastPPNode::Ideal_DU_postCCP( PhaseCCP *ccp ) {
   const Type *t = ccp->type(in(1));
-  if (!t->isa_oop_ptr() || (in(1)->is_DecodeN() && Universe::narrow_oop_use_implicit_null_checks())) {
+  if (!t->isa_oop_ptr() || (in(1)->is_DecodeN() && Matcher::gen_narrow_oop_implicit_null_checks())) {
     return NULL; // do not transform raw pointers or narrow oops
   }
   return ConstraintCastNode::Ideal_DU_postCCP(ccp);