diff options
| author | Nils Wallménius <nils@rockbox.org> | 2012-09-26 11:21:25 +0200 |
|---|---|---|
| committer | Nils Wallménius <nils@rockbox.org> | 2012-09-26 11:21:25 +0200 |
| commit | 425725edb087bc606bfe4ca4fe9e26008ef49b6a (patch) | |
| tree | 4e3d54d16c1d861ed6092fe3fe91016b4a398673 /lib | |
| parent | 5f60590e807dab79e46efa29b62a5d64e56f3451 (diff) | |
| download | rockbox-425725edb087bc606bfe4ca4fe9e26008ef49b6a.zip rockbox-425725edb087bc606bfe4ca4fe9e26008ef49b6a.tar.gz rockbox-425725edb087bc606bfe4ca4fe9e26008ef49b6a.tar.bz2 rockbox-425725edb087bc606bfe4ca4fe9e26008ef49b6a.tar.xz | |
opus: improve cf MULT16_32_Q15 by giving the compiler more freedom
saves about 3MHz when decoding a 64kbps test file
Change-Id: I10f47173ccb78e60e364662220d1db2f78dd5fdd
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/rbcodec/codecs/libopus/celt/fixed_generic.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/lib/rbcodec/codecs/libopus/celt/fixed_generic.h b/lib/rbcodec/codecs/libopus/celt/fixed_generic.h index d2271e7..bc6820f 100644 --- a/lib/rbcodec/codecs/libopus/celt/fixed_generic.h +++ b/lib/rbcodec/codecs/libopus/celt/fixed_generic.h @@ -45,14 +45,13 @@ #if defined(CPU_COLDFIRE) static inline int32_t MULT16_32_Q15(int32_t a, int32_t b) { - asm volatile ("lsl.l #8, %[a];" - "lsl.l #8, %[a];" - "mac.l %[a], %[b], %%acc0;" - "movclr.l %%acc0, %[a];" - : [a] "+d" (a) - : [b] "d" (b) + int32_t r; + asm volatile ("mac.l %[a], %[b], %%acc0;" + "movclr.l %%acc0, %[r];" + : [r] "=r" (r) + : [a] "r" (a<<16), [b] "r" (b) : "cc"); - return a; + return r; } #elif defined(CPU_ARM) |