Avoid creating verification_results_ unnecessarily

For compiler filters that don't quicken or compile, avoid creating
the verification results. This avoids creating some arrays that
were using a few MB of RAM in some cases.

For a large app verify compile:
Maximum resident set size (kbytes): 258948 -> 254300

Bug: 63467744
Test: test-art-host

Change-Id: I1d0536b2a6a5c301396641371915394cf4c0e5f3

1 files changed, 6 insertions, 2 deletions

diff --git a/compiler/dex/quick_compiler_callbacks.cc b/compiler/dex/quick_compiler_callbacks.cc
index 932eb51aee..b1006b2f0b 100644
--- a/compiler/dex/quick_compiler_callbacks.cc
+++ b/compiler/dex/quick_compiler_callbacks.cc
@@ -22,11 +22,15 @@
 namespace art {
 
 void QuickCompilerCallbacks::MethodVerified(verifier::MethodVerifier* verifier) {
-  verification_results_->ProcessVerifiedMethod(verifier);
+  if (verification_results_ != nullptr) {
+    verification_results_->ProcessVerifiedMethod(verifier);
+  }
 }
 
 void QuickCompilerCallbacks::ClassRejected(ClassReference ref) {
-  verification_results_->AddRejectedClass(ref);
+  if (verification_results_ != nullptr) {
+    verification_results_->AddRejectedClass(ref);
+  }
 }
 
 }  // namespace art