Land Ivan's change of 'Remove support for verified memory handling'

runtime/vm/scavenger.cc

Index: runtime/vm/scavenger.cc
diff --git a/runtime/vm/scavenger.cc b/runtime/vm/scavenger.cc
index ba36ac8fc14adc940060e890107eb839e990c50b..d1bfd3fa1819143ae07f27adf217dc8da04a7022 100644
--- a/runtime/vm/scavenger.cc
+++ b/runtime/vm/scavenger.cc
@@ -15,7 +15,6 @@
 #include "vm/store_buffer.h"
 #include "vm/thread_registry.h"
 #include "vm/timeline.h"
-#include "vm/verified_memory.h"
 #include "vm/verifier.h"
 #include "vm/visitor.h"
 #include "vm/weak_table.h"
@@ -161,7 +160,6 @@ class ScavengerVisitor : public ObjectPointerVisitor {
       memmove(reinterpret_cast<void*>(new_addr),
               reinterpret_cast<void*>(raw_addr),
               size);
-      VerifiedMemory::Accept(new_addr, size);
       // Remember forwarding address.
       ForwardTo(raw_addr, new_addr);
     }
@@ -170,7 +168,6 @@ class ScavengerVisitor : public ObjectPointerVisitor {
     *p = new_obj;
     // Update the store buffer as needed.
     if (visiting_old_object_ != NULL) {
-      VerifiedMemory::Accept(reinterpret_cast<uword>(p), sizeof(*p));
       UpdateStoreBuffer(p, new_obj);
     }
   }
@@ -289,7 +286,7 @@ SemiSpace* SemiSpace::New(intptr_t size_in_words) {
     return new SemiSpace(NULL);
   } else {
     intptr_t size_in_bytes = size_in_words << kWordSizeLog2;
-    VirtualMemory* reserved = VerifiedMemory::Reserve(size_in_bytes);
+    VirtualMemory* reserved = VirtualMemory::Reserve(size_in_bytes);
     if ((reserved == NULL) || !reserved->Commit(false)) {  // Not executable.
       // TODO(koda): If cache_ is not empty, we could try to delete it.
       delete reserved;
@@ -297,7 +294,6 @@ SemiSpace* SemiSpace::New(intptr_t size_in_words) {
     }
 #if defined(DEBUG)
     memset(reserved->address(), Heap::kZapByte, size_in_bytes);
-    VerifiedMemory::Accept(reserved->start(), size_in_bytes);
 #endif  // defined(DEBUG)
     return new SemiSpace(reserved);
   }
@@ -309,7 +305,6 @@ void SemiSpace::Delete() {
   if (reserved_ != NULL) {
     const intptr_t size_in_bytes = size_in_words() << kWordSizeLog2;
     memset(reserved_->address(), Heap::kZapByte, size_in_bytes);
-    VerifiedMemory::Accept(reserved_->start(), size_in_bytes);
   }
 #endif
   SemiSpace* old_cache = NULL;
@@ -429,7 +424,6 @@ void Scavenger::Epilogue(Isolate* isolate,
     // objects candidates for promotion next time.
     survivor_end_ = end_;
   }
-  VerifiedMemory::Accept(to_->start(), to_->end() - to_->start());
 #if defined(DEBUG)
   // We can only safely verify the store buffers from old space if there is no
   // concurrent old space task. At the same time we prevent new tasks from