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| author | Ian Rogers <irogers@google.com> | 2014-08-12 02:30:58 -0700 |
|---|---|---|
| committer | Ian Rogers <irogers@google.com> | 2014-08-12 16:08:05 -0700 |
| commit | 1ff3c98775a4577cf053dba9a0c2d5c21c07b298 (patch) | |
| tree | 2d09c27c69678b53b4c9dc486024f3547efd4bca /runtime/utf.h | |
| parent | 99c251bbd225dd97d0deece29559a430b12a0b66 (diff) | |
| download | art-1ff3c98775a4577cf053dba9a0c2d5c21c07b298.zip art-1ff3c98775a4577cf053dba9a0c2d5c21c07b298.tar.gz art-1ff3c98775a4577cf053dba9a0c2d5c21c07b298.tar.bz2 | |
Avoid use of std::string where we have const char*.
Removing the ClassHelper caused std::string creation for all calls to
Class::GetDescriptor and a significant performance regression. Make the
std::string an out argument so the caller can maintain it and its life time
while allowing GetDescriptor to return the common const char* case.
Don't generate GC maps when compilation is disabled.
Remove other uses of std::string that are occuring on critical paths.
Use the cheaper SkipClass in CompileMethod in CompilerDriver.
Specialize the utf8 as utf16 comparison code for the common shorter byte
encoding.
Force a bit of inlining, remove some UNLIKELYs (they are prone to pessimizing
code), add some LIKELYs.
x86-64 host 1-thread interpret-only of 57 apks:
Before: 29.539s
After: 23.467s
Regular compile:
Before: 1m35.347s
After: 1m20.056s
Bug: 16853450
Change-Id: Ic705ea24784bee24ab80084d06174cbf87d557ad
Diffstat (limited to 'runtime/utf.h')
| -rw-r--r-- | runtime/utf.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/runtime/utf.h b/runtime/utf.h index 29f8499..63cdbdc 100644 --- a/runtime/utf.h +++ b/runtime/utf.h @@ -55,7 +55,8 @@ void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_out, const char* utf8_in); /* * Compare two modified UTF-8 strings as UTF-16 code point values in a non-locale sensitive manner */ -int CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(const char* utf8_1, const char* utf8_2); +ALWAYS_INLINE int CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(const char* utf8_1, + const char* utf8_2); /* * Compare a modified UTF-8 string with a UTF-16 string as code point values in a non-locale |