7085279: C1 overflows code buffer with VerifyOops and CompressedOops

Summary: Increase the limit of code emitted per LIR instruction, increase the max size of the nmethod generated by C1
Reviewed-by: never, kvn, johnc

src/share/vm/c1/c1_LIRAssembler.cpp

@@ -121,7 +121,7 @@ void LIR_Assembler::append_patching_stub(PatchingStub* stub) {
 
 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");
   }
 }

src/share/vm/c1/c1_globals.hpp

@@ -278,7 +278,7 @@
   product(intx, CompilationRepeat, 0,                                       \
           "Number of times to recompile method before returning result")    \
                                                                             \
-  develop(intx, NMethodSizeLimit, (32*K)*wordSize,                          \
+  develop(intx, NMethodSizeLimit, (64*K)*wordSize,                          \
           "Maximum size of a compiled method.")                             \
                                                                             \
   develop(bool, TraceFPUStack, false,                                       \