actions/itgmania212121
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Apparently we want data1 before data2. (Tested.)

Browse Source
This commit is contained in:
Steve Checkoway
2006-06-19 03:21:25 +00:00
parent 7dbdc89b8c
commit 7ba8eefebf
1 changed files with 5 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
stepmania/src/archutils/Darwin/VectorHelper.cpp
+5 -11
View File
@@ -462,11 +462,8 @@ void Vector::FastSoundRead( int16_t *dest, const int32_t *src, unsigned size )
mask2 = _mm_and_si128( mask2, data2 ); // destructive logic
data1 = _mm_sub_epi32( _mm_sub_epi32(data1, mask1), mask1 );
data2 = _mm_sub_epi32( _mm_sub_epi32(data2, mask2), mask2 );
/* This is little-endian so data is stored in the register as
* { r0, r1, r2, r3, r4, r5, r6, r7 } an is stored in memory as
* { r7, r6, r5, r4, r3, r2, r1, r0 } so we want r0-r3 to come from data2. */
data2 = _mm_packs_epi32( data2, data1 );
_mm_store_si128( (__m128i *)dest, data2 );
data1 = _mm_packs_epi32( data1, data2 );
_mm_store_si128( (__m128i *)dest, data1 );
src += 8;
dest += 8;
size -= 8;
@@ -489,15 +486,12 @@ void Vector::FastSoundRead( int16_t *dest, const int32_t *src, unsigned size )
mask2 = _mm_and_si128( mask2, data2 ); // destructive logic
data1 = _mm_sub_epi32( _mm_sub_epi32(data1, mask1), mask1 );
data2 = _mm_sub_epi32( _mm_sub_epi32(data2, mask2), mask2 );
/* This is little-endian so data is stored in the register as
* { r0, r1, r2, r3, r4, r5, r6, r7 } an is stored in memory as
* { r7, r6, r5, r4, r3, r2, r1, r0 } so we want r0-r3 to come from data2. */
data2 = _mm_packs_epi32( data2, data1 );
data1 = _mm_packs_epi32( data1, data2 );
#define X(x) (-(size >= (x)))
data1 = _mm_set_epi8( 0, 0, X(7), X(7), X(6), X(6), X(5), X(5),
data2 = _mm_set_epi8( 0, 0, X(7), X(7), X(6), X(6), X(5), X(5),
X(4), X(4), X(3), X(3), X(2), X(2), -1, -1 );
#undef X
_mm_maskmoveu_si128( data2, data1, (char *)dest );
_mm_maskmoveu_si128( data1, data2, (char *)dest );
}
}