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| author | The Android Open Source Project <initial-contribution@android.com> | 2010-04-22 12:44:36 -0700 |
|---|---|---|
| committer | The Android Open Source Project <initial-contribution@android.com> | 2010-04-22 12:44:36 -0700 |
| commit | 1beb43af9350d47016c0e3ec55c1b2d4230cae7e (patch) | |
| tree | 695b1d59838e1a210ef5de808df76e23f2e544de /dexdump | |
| parent | 1dd42bb9da388c55191449b848f9d82dc4673229 (diff) | |
| parent | e339343c9c698a887681771372ba6cc58a79c707 (diff) | |
| download | android_dalvik-1beb43af9350d47016c0e3ec55c1b2d4230cae7e.tar.gz android_dalvik-1beb43af9350d47016c0e3ec55c1b2d4230cae7e.tar.bz2 android_dalvik-1beb43af9350d47016c0e3ec55c1b2d4230cae7e.zip | |
merge from open-source master
Change-Id: Ia08d4f55f5cdced2878777e0812c8cbbf26bb0d6
Diffstat (limited to 'dexdump')
| -rw-r--r-- | dexdump/DexDump.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/dexdump/DexDump.c b/dexdump/DexDump.c index b3b0839f7..9d9b6be28 100644 --- a/dexdump/DexDump.c +++ b/dexdump/DexDump.c @@ -225,20 +225,14 @@ static const char* quotedVisibility(u4 accessFlags) /* * Count the number of '1' bits in a word. - * - * Having completed this, I'm ready for an interview at Google. - * - * TODO? there's a parallel version w/o loops. Performance not currently - * important. */ static int countOnes(u4 val) { int count = 0; - while (val != 0) { - val &= val-1; - count++; - } + val = val - ((val >> 1) & 0x55555555); + val = (val & 0x33333333) + ((val >> 2) & 0x33333333); + count = (((val + (val >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24; return count; } |