# HG changeset patch
# User phh
# Date 1286550434 14400
# Node ID be2b508a60cbf27d3319c63919aec86087ff46f6
# Parent  22339bb3b2fdb551891375d1ab91ae2be1816d27
6981431: IdealKit should support I_O projections
Summary: add I_O projections support into IdealKit
Reviewed-by: never

diff -r 22339bb3b2fd -r be2b508a60cb src/share/vm/includeDB_compiler2
--- a/src/share/vm/includeDB_compiler2	Mon Aug 30 11:02:53 2010 -0700
+++ b/src/share/vm/includeDB_compiler2	Fri Oct 08 11:07:14 2010 -0400
@@ -522,6 +522,7 @@
 idealKit.hpp                            cfgnode.hpp
 idealKit.hpp                            connode.hpp
 idealKit.hpp                            divnode.hpp
+idealKit.hpp                            graphKit.hpp
 idealKit.hpp                            mulnode.hpp
 idealKit.hpp                            phaseX.hpp
 idealKit.hpp                            subnode.hpp
diff -r 22339bb3b2fd -r be2b508a60cb src/share/vm/opto/graphKit.cpp
--- a/src/share/vm/opto/graphKit.cpp	Mon Aug 30 11:02:53 2010 -0700
+++ b/src/share/vm/opto/graphKit.cpp	Fri Oct 08 11:07:14 2010 -0400
@@ -3254,6 +3254,7 @@
   // Final sync IdealKit and graphKit.
   __ drain_delay_transform();
   set_all_memory(__ merged_memory());
+  set_i_o(__ i_o());
   set_control(__ ctrl());
 }
 
@@ -3301,7 +3302,7 @@
   // (Else it's an array (or unknown), and we want more precise card marks.)
   assert(adr != NULL, "");
 
-  IdealKit ideal(gvn(), control(), merged_memory(), true);
+  IdealKit ideal(this, true);
 
   // Convert the pointer to an int prior to doing math on it
   Node* cast = __ CastPX(__ ctrl(), adr);
@@ -3337,7 +3338,7 @@
                                     Node* val,
                                     const TypeOopPtr* val_type,
                                     BasicType bt) {
-  IdealKit ideal(gvn(), control(), merged_memory(), true);
+  IdealKit ideal(this, true);
 
   Node* tls = __ thread(); // ThreadLocalStorage
 
@@ -3480,7 +3481,7 @@
   // (Else it's an array (or unknown), and we want more precise card marks.)
   assert(adr != NULL, "");
 
-  IdealKit ideal(gvn(), control(), merged_memory(), true);
+  IdealKit ideal(this, true);
 
   Node* tls = __ thread(); // ThreadLocalStorage
 
diff -r 22339bb3b2fd -r be2b508a60cb src/share/vm/opto/idealKit.cpp
--- a/src/share/vm/opto/idealKit.cpp	Mon Aug 30 11:02:53 2010 -0700
+++ b/src/share/vm/opto/idealKit.cpp	Fri Oct 08 11:07:14 2010 -0400
@@ -34,15 +34,16 @@
 const uint IdealKit::first_var = TypeFunc::Parms + 1;
 
 //----------------------------IdealKit-----------------------------------------
-IdealKit::IdealKit(PhaseGVN &gvn, Node* control, Node* mem, bool delay_all_transforms, bool has_declarations) :
-  _gvn(gvn), C(gvn.C) {
-  _initial_ctrl = control;
-  _initial_memory = mem;
+IdealKit::IdealKit(GraphKit* gkit, bool delay_all_transforms, bool has_declarations) :
+  _gvn(gkit->gvn()), C(gkit->C) {
+  _initial_ctrl = gkit->control();
+  _initial_memory = gkit->merged_memory();
+  _initial_i_o = gkit->i_o();
   _delay_all_transforms = delay_all_transforms;
   _var_ct = 0;
   _cvstate = NULL;
   // We can go memory state free or else we need the entire memory state
-  assert(mem == NULL || mem->Opcode() == Op_MergeMem, "memory must be pre-split");
+  assert(_initial_memory == NULL || _initial_memory->Opcode() == Op_MergeMem, "memory must be pre-split");
   int init_size = 5;
   _pending_cvstates = new (C->node_arena()) GrowableArray<Node*>(C->node_arena(), init_size, 0, 0);
   _delay_transform  = new (C->node_arena()) GrowableArray<Node*>(C->node_arena(), init_size, 0, 0);
@@ -266,6 +267,7 @@
   _cvstate = new_cvstate();   // initialize current cvstate
   set_ctrl(_initial_ctrl);    // initialize control in current cvstate
   set_all_memory(_initial_memory);// initialize memory in current cvstate
+  set_i_o(_initial_i_o);      // initialize i_o in current cvstate
   DEBUG_ONLY(_state->push(BlockS));
 }
 
@@ -407,6 +409,9 @@
   // Get the region for the join state
   Node* join_region = join->in(TypeFunc::Control);
   assert(join_region != NULL, "join region must exist");
+  if (join->in(TypeFunc::I_O) == NULL ) {
+    join->set_req(TypeFunc::I_O,  merging->in(TypeFunc::I_O));
+  }
   if (join->in(TypeFunc::Memory) == NULL ) {
     join->set_req(TypeFunc::Memory,  merging->in(TypeFunc::Memory));
     return;
@@ -453,6 +458,20 @@
       mms.set_memory(phi);
     }
   }
+
+  Node* join_io    = join->in(TypeFunc::I_O);
+  Node* merging_io = merging->in(TypeFunc::I_O);
+  if (join_io != merging_io) {
+    PhiNode* phi;
+    if (join_io->is_Phi() && join_io->as_Phi()->region() == join_region) {
+      phi = join_io->as_Phi();
+    } else {
+      phi = PhiNode::make(join_region, join_io, Type::ABIO);
+      phi = (PhiNode*) delay_transform(phi);
+      join->set_req(TypeFunc::I_O, phi);
+    }
+    phi->set_req(slot, merging_io);
+  }
 }
 
 
diff -r 22339bb3b2fd -r be2b508a60cb src/share/vm/opto/idealKit.hpp
--- a/src/share/vm/opto/idealKit.hpp	Mon Aug 30 11:02:53 2010 -0700
+++ b/src/share/vm/opto/idealKit.hpp	Fri Oct 08 11:07:14 2010 -0400
@@ -95,6 +95,7 @@
   bool _delay_all_transforms;              // flag forcing all transforms to be delayed
   Node* _initial_ctrl;                     // saves initial control until variables declared
   Node* _initial_memory;                   // saves initial memory  until variables declared
+  Node* _initial_i_o;                      // saves initial i_o  until variables declared
 
   PhaseGVN& gvn() const { return _gvn; }
   // Create a new cvstate filled with nulls
@@ -129,7 +130,7 @@
   Node* memory(uint alias_idx);
 
  public:
-  IdealKit(PhaseGVN &gvn, Node* control, Node* memory, bool delay_all_transforms = false, bool has_declarations = false);
+  IdealKit(GraphKit* gkit, bool delay_all_transforms = false, bool has_declarations = false);
   ~IdealKit() {
     stop();
     drain_delay_transform();
@@ -140,6 +141,8 @@
   Node* top()                           { return C->top(); }
   MergeMemNode* merged_memory()         { return _cvstate->in(TypeFunc::Memory)->as_MergeMem(); }
   void set_all_memory(Node* mem)        { _cvstate->set_req(TypeFunc::Memory, mem); }
+  Node* i_o()                           { return _cvstate->in(TypeFunc::I_O); }
+  void set_i_o(Node* c)                 { _cvstate->set_req(TypeFunc::I_O, c); }
   void set(IdealVariable& v, Node* rhs) { _cvstate->set_req(first_var + v.id(), rhs); }
   Node* value(IdealVariable& v)         { return _cvstate->in(first_var + v.id()); }
   void dead(IdealVariable& v)           { set(v, (Node*)NULL); }
diff -r 22339bb3b2fd -r be2b508a60cb src/share/vm/opto/library_call.cpp
--- a/src/share/vm/opto/library_call.cpp	Mon Aug 30 11:02:53 2010 -0700
+++ b/src/share/vm/opto/library_call.cpp	Fri Oct 08 11:07:14 2010 -0400
@@ -1105,7 +1105,7 @@
   const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin));
   const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot);
 
-  IdealKit kit(gvn(), control(), merged_memory(), false, true);
+  IdealKit kit(this, false, true);
 #define __ kit.
   Node* zero             = __ ConI(0);
   Node* one              = __ ConI(1);
@@ -2292,7 +2292,7 @@
         // of it. So we need to emit code to conditionally do the proper type of
         // store.
 
-        IdealKit ideal(gvn(), control(),  merged_memory());
+        IdealKit ideal(this);
 #define __ ideal.
         // QQQ who knows what probability is here??
         __ if_then(heap_base_oop, BoolTest::ne, null(), PROB_UNLIKELY(0.999)); {