# HG changeset patch
# User shade
# Date 1584369746 -3600
#      Mon Mar 16 15:42:26 2020 +0100
# Node ID b4d336b958162e3cc654272880d67c8ae70ac470
# Parent  367b1f73904c7c2990c441accd026f813b54ee6f
8241070: Shenandoah: remove unused local variables in C2 support

diff --git a/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp b/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
@@ -525,7 +525,6 @@
     assert(((decorators & C2_TIGHTLY_COUPLED_ALLOC) != 0 || !ShenandoahSATBBarrier) && (decorators & C2_ARRAY_COPY) != 0, "unexpected caller of this code");
     C2OptAccess& opt_access = static_cast<C2OptAccess&>(access);
     PhaseGVN& gvn =  opt_access.gvn();
-    MergeMemNode* mm = opt_access.mem();
 
     if (ShenandoahStoreValEnqueueBarrier) {
       Node* enqueue = gvn.transform(new ShenandoahEnqueueBarrierNode(val.node()));
diff --git a/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp b/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
@@ -788,7 +788,6 @@
   Node* c = ctrl;
   do {
     if (c->is_Region()) {
-      Node* phi_bottom = NULL;
       for (DUIterator_Fast imax, i = c->fast_outs(imax); i < imax && mem == NULL; i++) {
         Node* u = c->fast_out(i);
         if (u->is_Phi() && u->bottom_type() == Type::MEMORY) {
@@ -1445,11 +1444,9 @@
     val_phi->init_req(_heap_stable, uncasted_val);
     raw_mem_phi->init_req(_heap_stable, raw_mem);
 
-    Node* reg2_ctrl = NULL;
     // Null case
     test_null(ctrl, val, null_ctrl, phase);
     if (null_ctrl != NULL) {
-      reg2_ctrl = null_ctrl->in(0);
       region->init_req(_null_path, null_ctrl);
       val_phi->init_req(_null_path, uncasted_val);
       raw_mem_phi->init_req(_null_path, raw_mem);
@@ -1464,7 +1461,6 @@
     Node* not_cset_ctrl = NULL;
     in_cset_fast_test(ctrl, not_cset_ctrl, uncasted_val, raw_mem, phase);
     if (not_cset_ctrl != NULL) {
-      if (reg2_ctrl == NULL) reg2_ctrl = not_cset_ctrl->in(0);
       region->init_req(_not_cset, not_cset_ctrl);
       val_phi->init_req(_not_cset, uncasted_val);
       raw_mem_phi->init_req(_not_cset, raw_mem);
@@ -1818,7 +1814,6 @@
     bol->set_req(1, cmp);
     phase->register_new_node(bol, entry_c);
 
-    Node* old_bol =iff->in(1);
     phase->igvn().replace_input_of(iff, 1, bol);
   }
 }
@@ -2398,7 +2393,7 @@
     iteration++;
     assert(iteration <= 2+max_depth || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root()), "");
     if (trace) { tty->print_cr("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); }
-    IdealLoopTree* last_updated_ilt = NULL;
+
     for (int i = rpo_list.size() - 1; i >= 0; i--) {
       Node* c = rpo_list.at(i);