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8224880: AArch64: java/javac error with AllocatePrefetchDistance
authoraph
Tue, 28 May 2019 09:13:11 -0400
changeset 55058 30094911fffd
parent 55055 755f1c66a891
child 55059 0422b4b5cb8e
8224880: AArch64: java/javac error with AllocatePrefetchDistance Reviewed-by: adinn
src/hotspot/cpu/aarch64/vm_version_aarch64.cpp file | annotate | diff | comparison | revisions 
--- a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp	Tue May 28 08:25:22 2019 -0400
+++ b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp	Tue May 28 09:13:11 2019 -0400
@@ -129,8 +129,11 @@
 
   int dcache_line = VM_Version::dcache_line_size();
 
+  // Limit AllocatePrefetchDistance so that it does not exceed the
+  // constraint in AllocatePrefetchDistanceConstraintFunc.
   if (FLAG_IS_DEFAULT(AllocatePrefetchDistance))
-    FLAG_SET_DEFAULT(AllocatePrefetchDistance, 3*dcache_line);
+    FLAG_SET_DEFAULT(AllocatePrefetchDistance, MIN2(512, 3*dcache_line));
+
   if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize))
     FLAG_SET_DEFAULT(AllocatePrefetchStepSize, dcache_line);
   if (FLAG_IS_DEFAULT(PrefetchScanIntervalInBytes))
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