[11u] RFR: Fix non-Shenandoah builds

[Aleksey Shipilev]

Recent backports broke 11u builds that disable Shenandoah, like this:

/home/buildbot/worker/shenandoah-jdk11-linux/build/src/hotspot/share/opto/loopTransform.cpp: In
member function ‘void IdealLoopTree::adjust_loop_exit_prob(PhaseIdealLoop*)’:
/home/buildbot/worker/shenandoah-jdk11-linux/build/src/hotspot/share/opto/loopTransform.cpp:2807:14:
error: expected primary-expression before ‘)’ token
              ))

The reason is added INCLUDE_SHENANDOAHGC here:
  http://hg.openjdk.java.net/shenandoah/jdk11/file/tip/src/hotspot/share/opto/loopTransform.cpp#l2799

Note there is no #if in later releases:
  http://hg.openjdk.java.net/jdk/jdk/file/tip/src/hotspot/share/opto/loopTransform.cpp#l2976

I think we just need to remove the guard:

diff -r 04950e09d7f5 src/hotspot/share/opto/loopTransform.cpp
--- a/src/hotspot/share/opto/loopTransform.cpp  Thu May 23 17:01:38 2019 +0200
+++ b/src/hotspot/share/opto/loopTransform.cpp  Fri Jul 19 17:23:34 2019 +0200
@@ -2796,14 +2796,12 @@
              (bol->in(1)->Opcode() == Op_CompareAndSwapL ) ||
              (bol->in(1)->Opcode() == Op_CompareAndSwapP ) ||
              (bol->in(1)->Opcode() == Op_CompareAndSwapN ) ||
-#if INCLUDE_SHENANDOAHGC
              (bol->in(1)->Opcode() == Op_ShenandoahCompareAndExchangeP ) ||
              (bol->in(1)->Opcode() == Op_ShenandoahCompareAndExchangeN ) ||
              (bol->in(1)->Opcode() == Op_ShenandoahWeakCompareAndSwapP ) ||
              (bol->in(1)->Opcode() == Op_ShenandoahWeakCompareAndSwapN ) ||
              (bol->in(1)->Opcode() == Op_ShenandoahCompareAndSwapP ) ||
              (bol->in(1)->Opcode() == Op_ShenandoahCompareAndSwapN )
-#endif
              ))
           return;               // Allocation loops RARELY take backedge
         // Find the OTHER exit path from the IF

Testing: {x86_32, x86_64} builds

-- 
Thanks,
-Aleksey