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diff src/share/vm/opto/superword.hpp @ 6183:6f8f439e247d

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7177923: SIGBUS on sparc in compiled code for java.util.Calendar.clear() Summary: disable vectorization of a memory access with more elements per vector than one which is used for alignment on sparc Reviewed-by: twisti
author kvn
date Tue, 19 Jun 2012 15:12:56 -0700
parents 8c92982cbbc4
children 8ae8f9dd7099
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line diff
--- a/src/share/vm/opto/superword.hpp	Mon Jun 18 15:17:30 2012 -0700
+++ b/src/share/vm/opto/superword.hpp	Tue Jun 19 15:12:56 2012 -0700
@@ -264,11 +264,14 @@
                                      _iv = lp->as_CountedLoop()->phi()->as_Phi(); }
   int      iv_stride()             { return lp()->as_CountedLoop()->stride_con(); }
 
-  int vector_width_in_bytes(BasicType bt) {
-    return MIN2(ABS(iv_stride())*type2aelembytes(bt),
-                Matcher::vector_width_in_bytes(bt));
+  int vector_width(Node* n) {
+    BasicType bt = velt_basic_type(n);
+    return MIN2(ABS(iv_stride()), Matcher::max_vector_size(bt));
   }
-
+  int vector_width_in_bytes(Node* n) {
+    BasicType bt = velt_basic_type(n);
+    return vector_width(n)*type2aelembytes(bt);
+  }
   MemNode* align_to_ref()            { return _align_to_ref; }
   void  set_align_to_ref(MemNode* m) { _align_to_ref = m; }