--- a/hotspot/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Mon Apr 14 09:04:36 2014 +0000
+++ b/hotspot/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Tue Apr 01 09:36:49 2014 +0200
@@ -3014,11 +3014,15 @@
   // restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved)
   __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset_in_bytes()));
 
-  // Stack bang to make sure there's enough room for these interpreter frames.
+#ifdef ASSERT
+  // Compilers generate code that bang the stack by as much as the
+  // interpreter would need. So this stack banging should never
+  // trigger a fault. Verify that it does not on non product builds.
   if (UseStackBanging) {
     __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes()));
     __ bang_stack_size(rbx, rcx);
   }
+#endif
 
   // Load array of frame pcs into ECX
   __ movptr(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes()));
@@ -3240,12 +3244,15 @@
   // restore rbp before stack bang because if stack overflow is thrown it needs to be pushed (and preserved)
   __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_info_offset_in_bytes()));
 
-  // Stack bang to make sure there's enough room for these interpreter frames.
+#ifdef ASSERT
+  // Compilers generate code that bang the stack by as much as the
+  // interpreter would need. So this stack banging should never
+  // trigger a fault. Verify that it does not on non product builds.
   if (UseStackBanging) {
     __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes()));
     __ bang_stack_size(rbx, rcx);
   }
-
+#endif
 
   // Load array of frame pcs into ECX
   __ movl(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes()));