Code patching support and tests for new inline caches.

runtime/vm/code_patcher_ia32_test.cc

Index: runtime/vm/code_patcher_ia32_test.cc
===================================================================
--- runtime/vm/code_patcher_ia32_test.cc	(revision 655)
+++ runtime/vm/code_patcher_ia32_test.cc	(working copy)
@@ -6,8 +6,10 @@
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/assembler.h"
+#include "vm/code_generator.h"
 #include "vm/code_patcher.h"
 #include "vm/dart_entry.h"
+#include "vm/ic_data.h"
 #include "vm/instructions.h"
 #include "vm/native_entry.h"
 #include "vm/native_entry_test.h"
@@ -79,6 +81,38 @@
 }
 
 
+ASSEMBLER_TEST_GENERATE(IcDataAccess, assembler) {
+  const String& function_name = String::Handle(String::New("Vermicelles"));
+  ICData ic_data(function_name, 1);
+  EXPECT(!Array::Handle(ic_data.data()).IsNull());
+  __ LoadObject(ECX, Array::ZoneHandle(ic_data.data()));
+  __ LoadObject(EDX, CodeGenerator::ArgumentsDescriptor(1, Array::Handle()));
+  __ call(&StubCode::CallInstanceFunctionLabel());
+  __ ret();
+}
+
+
+ASSEMBLER_TEST_RUN(IcDataAccess, entry) {
+  uword return_address = entry + CodePatcher::InstanceCallSizeInBytes();
+  const Array& array = Array::Handle(
+      CodePatcher::GetInstanceCallIcDataAt(return_address));
+  EXPECT(!array.IsNull());
+  ICData ic_data(array);
+  EXPECT_STREQ("Vermicelles",
+      String::Handle(ic_data.FunctionName()).ToCString());
+  EXPECT_EQ(1, ic_data.NumberOfArgumentsChecked());
+  EXPECT_EQ(0, ic_data.NumberOfChecks());
+  const String& new_function_name = String::Handle(String::New("Rigi"));
+  ICData new_ic_data(new_function_name, 1);
+  EXPECT_STREQ("Rigi", String::Handle(new_ic_data.FunctionName()).ToCString());
+  CodePatcher::SetInstanceCallIcDataAt(return_address,
+                                       Array::ZoneHandle(new_ic_data.data()));
+  const Array& new_array = Array::Handle(
+      CodePatcher::GetInstanceCallIcDataAt(return_address));
+  ICData test_ic_data(new_array);
+  EXPECT_STREQ("Rigi", String::Handle(test_ic_data.FunctionName()).ToCString());
+}
+
 }  // namespace dart
 
 #endif  // TARGET_ARCH_IA32