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diff src/share/vm/opto/matcher.cpp @ 642:660978a2a31a

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6791178: Specialize for zero as the compressed oop vm heap base Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb. Reviewed-by: never, twisti, jcoomes, coleenp
author kvn
date Thu, 12 Mar 2009 10:37:46 -0700
parents 98cb887364d3
children bd441136a5ce
line wrap: on
line diff
--- a/src/share/vm/opto/matcher.cpp	Wed Mar 11 14:16:13 2009 -0700
+++ b/src/share/vm/opto/matcher.cpp	Thu Mar 12 10:37:46 2009 -0700
@@ -1481,8 +1481,13 @@
       const Type* mach_at = mach->adr_type();
       // DecodeN node consumed by an address may have different type
       // then its input. Don't compare types for such case.
-      if (m->adr_type() != mach_at && m->in(MemNode::Address)->is_AddP() &&
-          m->in(MemNode::Address)->in(AddPNode::Address)->is_DecodeN()) {
+      if (m->adr_type() != mach_at &&
+          (m->in(MemNode::Address)->is_DecodeN() ||
+           m->in(MemNode::Address)->is_AddP() &&
+           m->in(MemNode::Address)->in(AddPNode::Address)->is_DecodeN() ||
+           m->in(MemNode::Address)->is_AddP() &&
+           m->in(MemNode::Address)->in(AddPNode::Address)->is_AddP() &&
+           m->in(MemNode::Address)->in(AddPNode::Address)->in(AddPNode::Address)->is_DecodeN())) {
         mach_at = m->adr_type();
       }
       if (m->adr_type() != mach_at) {