ART: Fix things for valgrind

Wire up valgrind gtests. Add valgrind-test-art-host, currently
only depending on valgrind-test-art-host-gtest32.

Fix an Alloc setting to allow running valgrind.

Refactor the fault handler to manage (and correctly release) the
handlers.

Fix minor failure-case leaks exposed by tests.

Failing tests:

The optimizing compiler is leaking non-arena-ed structures
(e.g., assembler buffers), as code generators are not destroyed.
The solution has been moved to a follow-up CL.

Note: All 64b tests are failing as we cannot allocate a heap.

Change-Id: I7f854cfd098d9f68107ce492363e7dba9a82b9fa

3 files changed, 9 insertions, 1 deletions

diff --git a/compiler/utils/assembler.cc b/compiler/utils/assembler.cc
index 68b784a..e3045e1 100644
--- a/compiler/utils/assembler.cc
+++ b/compiler/utils/assembler.cc
@@ -92,6 +92,7 @@ void AssemblerBuffer::ExtendCapacity() {
 
   // Compute the relocation delta and switch to the new contents area.
   ptrdiff_t delta = new_contents - contents_;
+  delete[] contents_;
   contents_ = new_contents;
 
   // Update the cursor and recompute the limit.
diff --git a/compiler/utils/x86_64/assembler_x86_64.h b/compiler/utils/x86_64/assembler_x86_64.h
index 3f9f007..763dafe 100644
--- a/compiler/utils/x86_64/assembler_x86_64.h
+++ b/compiler/utils/x86_64/assembler_x86_64.h
@@ -253,7 +253,7 @@ class Address : public Operand {
 
 class X86_64Assembler FINAL : public Assembler {
  public:
-  X86_64Assembler() {}
+  X86_64Assembler() : cfi_cfa_offset_(0), cfi_pc_(0) {}
   virtual ~X86_64Assembler() {}
 
   /*
diff --git a/compiler/utils/x86_64/assembler_x86_64_test.cc b/compiler/utils/x86_64/assembler_x86_64_test.cc
index 4ed7b20..7a48b63 100644
--- a/compiler/utils/x86_64/assembler_x86_64_test.cc
+++ b/compiler/utils/x86_64/assembler_x86_64_test.cc
@@ -16,6 +16,7 @@
 
 #include "assembler_x86_64.h"
 
+#include "base/stl_util.h"
 #include "utils/assembler_test.h"
 
 namespace art {
@@ -62,6 +63,11 @@ class AssemblerX86_64Test : public AssemblerTest<x86_64::X86_64Assembler, x86_64
     }
   }
 
+  void TearDown() OVERRIDE {
+    AssemblerTest::TearDown();
+    STLDeleteElements(&registers_);
+  }
+
   std::vector<x86_64::CpuRegister*> GetRegisters() OVERRIDE {
     return registers_;
   }
@@ -219,6 +225,7 @@ std::string setcc_test_fn(x86_64::X86_64Assembler* assembler) {
     }
   }
 
+  STLDeleteElements(&registers);
   return str.str();
 }