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diff src/share/vm/opto/c2compiler.cpp @ 10278:6f3fd5150b67

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6934604: enable parts of EliminateAutoBox by default Summary: Resurrected autobox elimination code and enabled part of it by default. Reviewed-by: roland, twisti
author kvn
date Wed, 08 May 2013 15:08:01 -0700
parents 1d1603768966
children 469216acdb28 d2907f74462e
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line diff
--- a/src/share/vm/opto/c2compiler.cpp	Mon May 06 19:49:23 2013 -0700
+++ b/src/share/vm/opto/c2compiler.cpp	Wed May 08 15:08:01 2013 -0700
@@ -125,9 +125,10 @@
   bool subsume_loads = SubsumeLoads;
   bool do_escape_analysis = DoEscapeAnalysis &&
     !env->jvmti_can_access_local_variables();
+  bool eliminate_boxing = EliminateAutoBox;
   while (!env->failing()) {
     // Attempt to compile while subsuming loads into machine instructions.
-    Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis);
+    Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis, eliminate_boxing);
 
 
     // Check result and retry if appropriate.
@@ -142,6 +143,12 @@
         do_escape_analysis = false;
         continue;  // retry
       }
+      if (C.has_boxed_value()) {
+        // Recompile without boxing elimination regardless failure reason.
+        assert(eliminate_boxing, "must make progress");
+        eliminate_boxing = false;
+        continue;  // retry
+      }
       // Pass any other failure reason up to the ciEnv.
       // Note that serious, irreversible failures are already logged
       // on the ciEnv via env->record_method_not_compilable().