Convert some compiler passes to preserve valid def-use chains.

runtime/vm/il_printer.cc

Index: runtime/vm/il_printer.cc
diff --git a/runtime/vm/il_printer.cc b/runtime/vm/il_printer.cc
index bd501ace930f669541eab7a06e23cbe37f1f9559..c7e0d43c1ad7560defec945877fb5d703c5c88ac 100644
--- a/runtime/vm/il_printer.cc
+++ b/runtime/vm/il_printer.cc
@@ -306,7 +306,7 @@ void ArgumentDefinitionTestInstr::PrintOperandsTo(BufferFormatter* f) const {
 void ClosureCallInstr::PrintOperandsTo(BufferFormatter* f) const {
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     if (i > 0) f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
 }
 
@@ -315,7 +315,7 @@ void InstanceCallInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", function_name().ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
   if (HasICData()) {
     PrintICData(f, *ic_data());
@@ -327,7 +327,7 @@ void PolymorphicInstanceCallInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", instance_call()->function_name().ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
   PrintICData(f, ic_data());
 }
@@ -355,7 +355,7 @@ void StaticCallInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s ", String::Handle(function().name()).ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     if (i > 0) f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
 }
 
@@ -427,7 +427,7 @@ void AllocateObjectInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", Class::Handle(constructor().Owner()).ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); i++) {
     f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
 }
 
@@ -445,7 +445,7 @@ void AllocateObjectWithBoundsCheckInstr::PrintOperandsTo(
 void CreateArrayInstr::PrintOperandsTo(BufferFormatter* f) const {
   for (int i = 0; i < ArgumentCount(); ++i) {
     if (i != 0) f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
   if (ArgumentCount() > 0) f->Print(", ");
   element_type()->PrintTo(f);
@@ -456,7 +456,7 @@ void CreateClosureInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", function().ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     if (i > 0) f->Print(", ");
-    ArgumentAt(i)->value()->PrintTo(f);
+    PushArgumentAt(i)->value()->PrintTo(f);
   }
 }