commit 5c8fe3028655b2f1fcab77080272f071cc0d8bc4
author Jeff Hao <jeffhao@google.com> Wed May 06 17:41:32 2015 -0700
committer Jeff Hao <jeffhao@google.com> Wed May 06 18:16:27 2015 -0700
tree c526fad034772dfa3c56583ae6e4e3ecc7ad1cd9
parent f7083ed806da454ba6a50ddef34799559f863fd4

In quick compiler, force string init invoke to be fast path.

Was running into an issue where a secondary dex file was falling back on
the quick compiler, and IsFastInvoke returned 0 because the
referrer_class was nullptr, causing the string init to be slow path. The
string init technically does not have to be fast path, but there's no
reason to duplicate the logic to call off a thread pointer on the slow
path.

Bug: 20870917
Change-Id: I47e1524d939eb7e9b1da8186092fafc6e925009e

compiler/dex/mir_method_info.cc

diff --git a/compiler/dex/mir_method_info.cc b/compiler/dex/mir_method_info.cc
index 5654604..94be1fd 100644
--- a/compiler/dex/mir_method_info.cc
+++ b/compiler/dex/mir_method_info.cc
@@ -169,7 +169,8 @@
         ~(kFlagFastPath | kFlagIsIntrinsic | kFlagIsSpecial | kFlagClassIsInitialized |
             (kInvokeTypeMask << kBitSharpTypeBegin));
     it->flags_ = other_flags |
-        (fast_path_flags != 0 ? kFlagFastPath : 0u) |
+        // String init path is a special always-fast path.
+        (fast_path_flags != 0 || string_init ? kFlagFastPath : 0u) |
         ((is_intrinsic_or_special & kInlineIntrinsic) != 0 ? kFlagIsIntrinsic : 0u) |
         ((is_intrinsic_or_special & kInlineSpecial) != 0 ? kFlagIsSpecial : 0u) |
         (static_cast<uint16_t>(invoke_type) << kBitSharpTypeBegin) |