diff -r 754cf4e432f4 -r df3cc194efc5 hotspot/src/share/vm/c1/c1_LIRAssembler.cpp
--- a/hotspot/src/share/vm/c1/c1_LIRAssembler.cpp	Tue Aug 30 00:54:09 2011 -0700
+++ b/hotspot/src/share/vm/c1/c1_LIRAssembler.cpp	Tue Aug 30 19:01:58 2011 -0700
@@ -121,7 +121,7 @@
 
 void LIR_Assembler::check_codespace() {
   CodeSection* cs = _masm->code_section();
-  if (cs->remaining() < (int)(1*K)) {
+  if (cs->remaining() < (int)(NOT_LP64(1*K)LP64_ONLY(2*K))) {
     BAILOUT("CodeBuffer overflow");
   }
 }