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diff src/cpu/x86/vm/stubGenerator_x86_32.cpp @ 8883:b9a918201d47

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Merge with hsx25
author Gilles Duboscq <duboscq@ssw.jku.at>
date Sat, 06 Apr 2013 20:04:06 +0200
parents 989155e2d07a e961c11b85fe
children 836a62f43af9
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line diff
--- a/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Fri Apr 05 18:53:57 2013 +0200
+++ b/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Sat Apr 06 20:04:06 2013 +0200
@@ -835,6 +835,11 @@
   __ BIND(L_copy_64_bytes);
     __ subl(qword_count, 8);
     __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop);
+
+    if (UseUnalignedLoadStores && (UseAVX >= 2)) {
+      // clean upper bits of YMM registers
+      __ vzeroupper();
+    }
     __ addl(qword_count, 8);
     __ jccb(Assembler::zero, L_exit);
     //