commit 1c284f2abdfe1b0ed87d5216021e69146f10b116
author Andreas Gampe <agampe@google.com> Wed Jun 24 16:25:33 2015 -0700
committer Andreas Gampe <agampe@google.com> Thu Jun 25 17:23:41 2015 +0000
tree 2c23480970492c7d5771f83733d430256a2c8b39
parent 1f1d53ebfc7f955c28f8d5659b7811ad6cef8f19

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

compiler/driver/compiler_driver.cc

diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 4cdf75b..7890108 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -1971,7 +1971,13 @@
     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);