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| author | Jens Arnold <amiconn@rockbox.org> | 2008-11-12 09:18:36 +0000 |
|---|---|---|
| committer | Jens Arnold <amiconn@rockbox.org> | 2008-11-12 09:18:36 +0000 |
| commit | 1600e4918e45e4deb4e34dc1765c2d9ac28daf8c (patch) | |
| tree | f321088bb069c83aad121458120c209eeeeed6ce | |
| parent | f32336e4a5ba3fe70e0af24b5d815518dfb223ea (diff) | |
| download | rockbox-1600e4918e45e4deb4e34dc1765c2d9ac28daf8c.zip rockbox-1600e4918e45e4deb4e34dc1765c2d9ac28daf8c.tar.gz rockbox-1600e4918e45e4deb4e34dc1765c2d9ac28daf8c.tar.bz2 rockbox-1600e4918e45e4deb4e34dc1765c2d9ac28daf8c.tar.xz | |
Tiny performance improvement for the (not yet usable) compression levels >= -c2000 on ARM7TDMI, utilizing the multiplier's early termination.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19099 a1c6a512-1295-4272-9138-f99709370657
| -rw-r--r-- | apps/codecs/demac/libdemac/vector_math16_arm7.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/apps/codecs/demac/libdemac/vector_math16_arm7.h b/apps/codecs/demac/libdemac/vector_math16_arm7.h index 1565ca9..653bb1f 100644 --- a/apps/codecs/demac/libdemac/vector_math16_arm7.h +++ b/apps/codecs/demac/libdemac/vector_math16_arm7.h @@ -217,19 +217,19 @@ static inline int32_t scalarproduct(int16_t* v1, int16_t* v2) "mov r8, r8 , asr #16 \n" \ "mov r9, " #f2 ", lsl #16 \n" \ "mov r9, r9 , asr #16 \n" \ - "mla %[res], r8, r9, %[res] \n" \ + "mla %[res], r9, r8, %[res] \n" \ "mov r8, " #f1 ", asr #16 \n" \ "mov r9, " #f2 ", asr #16 \n" \ - "mla %[res], r8, r9, %[res] \n" - + "mla %[res], r9, r8, %[res] \n" + #define MLABLOCK2_U2(f1, f2) \ "mov r8, " #f1 ", lsl #16 \n" \ "mov r8, r8 , asr #16 \n" \ - "mla %[res], r8, r9, %[res] \n" \ + "mla %[res], r9, r8, %[res] \n" \ "mov r8, " #f1 ", asr #16 \n" \ "mov r9, " #f2 ", lsl #16 \n" \ "mov r9, r9 , asr #16 \n" \ - "mla %[res], r8, r9, %[res] \n" \ + "mla %[res], r9, r8, %[res] \n" \ "mov r9, " #f2 ", asr #16 \n" asm volatile ( |