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diff src/cpu/x86/vm/c1_LIRAssembler_x86.cpp @ 2112:55f868e91c3b

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7010618: C1: array length should be treated at int on 64bit during array allocation Summary: Sign-extend the length argument during array allocation Reviewed-by: never, kvn
author iveresov
date Thu, 06 Jan 2011 16:03:20 -0800
parents 037c727f35fb
children 1b4e6a5d98e0
line wrap: on
line diff
--- a/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Thu Dec 30 23:44:45 2010 -0800
+++ b/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp	Thu Jan 06 16:03:20 2011 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1641,12 +1641,14 @@
 }
 
 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) {
+  Register len =  op->len()->as_register();
+  LP64_ONLY( __ movslq(len, len); )
+
   if (UseSlowPath ||
       (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) ||
       (!UseFastNewTypeArray   && (op->type() != T_OBJECT && op->type() != T_ARRAY))) {
     __ jmp(*op->stub()->entry());
   } else {
-    Register len =  op->len()->as_register();
     Register tmp1 = op->tmp1()->as_register();
     Register tmp2 = op->tmp2()->as_register();
     Register tmp3 = op->tmp3()->as_register();