Last cleanup int -> intptr_t. Also removed a hack.

runtime/vm/code_patcher_x64.cc

Index: runtime/vm/code_patcher_x64.cc
===================================================================
--- runtime/vm/code_patcher_x64.cc	(revision 28370)
+++ runtime/vm/code_patcher_x64.cc	(working copy)
@@ -43,17 +43,17 @@
   }
 
   RawObject* ic_data() const {
-    int index = InstructionPattern::IndexFromPPLoad(start_ + 3);
+    intptr_t index = InstructionPattern::IndexFromPPLoad(start_ + 3);
     return object_pool_.At(index);
   }
 
   uword target() const {
-    int index = InstructionPattern::IndexFromPPLoad(start_ + 10);
+    intptr_t index = InstructionPattern::IndexFromPPLoad(start_ + 10);
     return reinterpret_cast<uword>(object_pool_.At(index));
   }
 
   void set_target(uword target) const {
-    int index = InstructionPattern::IndexFromPPLoad(start_ + 10);
+    intptr_t index = InstructionPattern::IndexFromPPLoad(start_ + 10);
     const Smi& smi = Smi::Handle(reinterpret_cast<RawSmi*>(target));
     object_pool_.SetAt(index, smi);
     // No need to flush the instruction cache, since the code is not modified.
@@ -124,12 +124,12 @@
   }
 
   uword target() const {
-    int index = InstructionPattern::IndexFromPPLoad(start_ + 3);
+    intptr_t index = InstructionPattern::IndexFromPPLoad(start_ + 3);
     return reinterpret_cast<uword>(object_pool_.At(index));
   }
 
   void set_target(uword target) const {
-    int index = InstructionPattern::IndexFromPPLoad(start_ + 3);
+    intptr_t index = InstructionPattern::IndexFromPPLoad(start_ + 3);
     const Smi& smi = Smi::Handle(reinterpret_cast<RawSmi*>(target));
     object_pool_.SetAt(index, smi);
     // No need to flush the instruction cache, since the code is not modified.