7122939: TraceBytecodes broken with UseCompressedOops
Summary: Disable verify_heapbase on sparc if TraceBytecodes because the latter uses r12 as a temp register
Reviewed-by: coleenp, phh
Contributed-by: Volker Simonis <volker.simonis@gmail.com>
--- a/hotspot/src/cpu/x86/vm/assembler_x86.cpp Fri Dec 16 12:46:17 2011 -0800
+++ b/hotspot/src/cpu/x86/vm/assembler_x86.cpp Mon Dec 19 15:34:09 2011 -0500
@@ -5968,7 +5968,9 @@
assert(number_of_arguments >= 0 , "cannot have negative number of arguments");
LP64_ONLY(assert(java_thread == r15_thread, "unexpected register"));
#ifdef ASSERT
- LP64_ONLY(if (UseCompressedOops) verify_heapbase("call_VM_base");)
+ // TraceBytecodes does not use r12 but saves it over the call, so don't verify
+ // r12 is the heapbase.
+ LP64_ONLY(if (UseCompressedOops && !TraceBytecodes) verify_heapbase("call_VM_base");)
#endif // ASSERT
assert(java_thread != oop_result , "cannot use the same register for java_thread & oop_result");