diff options
| author | Hiroshi Yamauchi <yamauchi@google.com> | 2013-08-21 11:54:09 -0700 |
|---|---|---|
| committer | Hiroshi Yamauchi <yamauchi@google.com> | 2013-08-23 11:46:35 -0700 |
| commit | 89502fc63d5d2ef3586e49b1ec38e1777ce7accf (patch) | |
| tree | bdd0ca91f0dac742b2814ae60c4a4e1d3322fb86 /runtime/interpreter/interpreter.cc | |
| parent | 2213ac60891aae4a05232663182bcb75137c7623 (diff) | |
| download | art-89502fc63d5d2ef3586e49b1ec38e1777ce7accf.zip art-89502fc63d5d2ef3586e49b1ec38e1777ce7accf.tar.gz art-89502fc63d5d2ef3586e49b1ec38e1777ce7accf.tar.bz2 | |
A char array copy optimization.
- Based on measurements, copy char by char for arrays of length <= 64.
- With this change, the Ritz MemAllocBench got ~25% faster on Nexus 4
and ~20% faster on host.
- This change only handles arraycopy calls in the core libraries and
char arrays with the rest future work.
Bug: 7103825
Change-Id: Ie88890eb65f011ca052b1f253f1b0e078ec24b6b
Diffstat (limited to 'runtime/interpreter/interpreter.cc')
| -rw-r--r-- | runtime/interpreter/interpreter.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/runtime/interpreter/interpreter.cc b/runtime/interpreter/interpreter.cc index 59f0ac2..1677e80 100644 --- a/runtime/interpreter/interpreter.cc +++ b/runtime/interpreter/interpreter.cc @@ -127,7 +127,8 @@ static void UnstartedRuntimeInvoke(Thread* self, MethodHelper& mh, args[0] = reinterpret_cast<uint32_t>(found); EnterInterpreterFromInvoke(self, c, field.get(), args, NULL); result->SetL(field.get()); - } else if (name == "void java.lang.System.arraycopy(java.lang.Object, int, java.lang.Object, int, int)") { + } else if (name == "void java.lang.System.arraycopy(java.lang.Object, int, java.lang.Object, int, int)" || + name == "void java.lang.System.arraycopy(char[], int, char[], int, int)") { // Special case array copying without initializing System. Class* ctype = shadow_frame->GetVRegReference(arg_offset)->GetClass()->GetComponentType(); jint srcPos = shadow_frame->GetVReg(arg_offset + 1); |