ART: Set methods to preverified in verify-none

Actually mark all methods to be verified, so that the interpreter
doesn't do access checks. Speedup is about 2x on a Nexus 6 when booting
in verify-none mode.

Bug: 22040916
Change-Id: I2d6c8df2a68eae6e358da2639d980cb8bfcc1560

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 4cdf75bba4..7890108f41 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -1971,7 +1971,13 @@ static void SetVerifiedClass(const ParallelCompilationManager* manager, size_t c
     if (klass->IsResolved()) {
       if (klass->GetStatus() < mirror::Class::kStatusVerified) {
         ObjectLock<mirror::Class> lock(soa.Self(), klass);
+        // Set class status to verified.
         mirror::Class::SetStatus(klass, mirror::Class::kStatusVerified, soa.Self());
+        // Mark methods as pre-verified. If we don't do this, the interpreter will run with
+        // access checks.
+        klass->SetPreverifiedFlagOnAllMethods(
+            GetInstructionSetPointerSize(manager->GetCompiler()->GetInstructionSet()));
+        klass->SetPreverified();
       }
       // Record the final class status if necessary.
       ClassReference ref(manager->GetDexFile(), class_def_index);