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diff src/share/vm/runtime/arguments.cpp @ 12966:b2ee5dc63353

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8024070: C2 needs some form of type speculation Summary: record unused type profile information with type system, propagate and use it. Reviewed-by: kvn, twisti
author roland
date Wed, 23 Oct 2013 12:40:23 +0200
parents 027006a47a6d
children 68f07c29521b
line wrap: on
line diff
--- a/src/share/vm/runtime/arguments.cpp	Wed Oct 23 10:00:39 2013 +0200
+++ b/src/share/vm/runtime/arguments.cpp	Wed Oct 23 12:40:23 2013 +0200
@@ -3721,6 +3721,14 @@
     // incremental inlining: bump MaxNodeLimit
     FLAG_SET_DEFAULT(MaxNodeLimit, (intx)75000);
   }
+  if (!UseTypeSpeculation && FLAG_IS_DEFAULT(TypeProfileLevel)) {
+    // nothing to use the profiling, turn if off
+    FLAG_SET_DEFAULT(TypeProfileLevel, 0);
+  }
+  if (UseTypeSpeculation && FLAG_IS_DEFAULT(ReplaceInParentMaps)) {
+    // Doing the replace in parent maps helps speculation
+    FLAG_SET_DEFAULT(ReplaceInParentMaps, true);
+  }
 #endif
 
   if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) {