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APE codec: Further optimised filtering yields 3..4% speedup for -c2000 (now 135% realtime), -c3000 (now 97% realtime) and higher modes. Single 32 bit stores are faster than movem/lea in IRAM.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15200 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2007-10-19 07:30:55 +00:00
parent 26b3a7405d
commit 2e9c77cc2a
1 changed files with 39 additions and 32 deletions
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63
apps/codecs/demac/libdemac/vector_math16_cf.h
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@ -38,31 +38,34 @@ static inline void vector_add(int16_t* v1, int16_t* v2)
"moveq.l %[cnt], %%d5 \n"
"1: \n"
#endif
"movem.l (%[v1]), %%d0-%%d3 \n"
"movem.l (%[v2]), %%a0-%%a3 \n"
ADDHALFREGS(%%a0, %%d0)
ADDHALFREGS(%%a1, %%d1)
ADDHALFREGS(%%a2, %%d2)
ADDHALFREGS(%%a3, %%d3)
"movem.l %%d0-%%d3, (%[v1]) \n"
"lea.l (16, %[v1]), %[v1] \n"
"movem.l (%[v1]), %%d0-%%d3 \n"
ADDHALFREGS(%%a0, %%d0)
"move.l %%d0, (%[v1])+ \n"
ADDHALFREGS(%%a1, %%d1)
"move.l %%d1, (%[v1])+ \n"
ADDHALFREGS(%%a2, %%d2)
"move.l %%d2, (%[v1])+ \n"
ADDHALFREGS(%%a3, %%d3)
"move.l %%d3, (%[v1])+ \n"
"lea.l (16, %[v2]), %[v2] \n"
"movem.l (%[v2]), %%a0-%%a3 \n"
"movem.l (%[v1]), %%d0-%%d3 \n"
ADDHALFREGS(%%a0, %%d0)
"move.l %%d0, (%[v1])+ \n"
ADDHALFREGS(%%a1, %%d1)
"move.l %%d1, (%[v1])+ \n"
ADDHALFREGS(%%a2, %%d2)
"move.l %%d2, (%[v1])+ \n"
ADDHALFREGS(%%a3, %%d3)
"movem.l %%d0-%%d3, (%[v1]) \n"
"move.l %%d3, (%[v1])+ \n"
#if ORDER > 16
"lea.l (16, %[v1]), %[v1] \n"
"lea.l (16, %[v2]), %[v2] \n"
"subq.l #1, %%d5 \n"
"bne.s 1b \n"
"bne.w 1b \n"
#endif
: /* outputs */
[v1]"+a"(v1),
@ -89,31 +92,34 @@ static inline void vector_sub(int16_t* v1, int16_t* v2)
"moveq.l %[cnt], %%d5 \n"
"1: \n"
#endif
"movem.l (%[v1]), %%a0-%%a3 \n"
"movem.l (%[v2]), %%d1-%%d4 \n"
SUBHALFREGS(%%a0, %%d1, %%d0)
SUBHALFREGS(%%a1, %%d2, %%d1)
SUBHALFREGS(%%a2, %%d3, %%d2)
SUBHALFREGS(%%a3, %%d4, %%d3)
"movem.l %%d0-%%d3, (%[v1]) \n"
"lea.l (16, %[v1]), %[v1] \n"
"movem.l (%[v1]), %%a0-%%a3 \n"
SUBHALFREGS(%%a0, %%d1, %%d0)
"move.l %%d0, (%[v1])+ \n"
SUBHALFREGS(%%a1, %%d2, %%d1)
"move.l %%d1, (%[v1])+ \n"
SUBHALFREGS(%%a2, %%d3, %%d2)
"move.l %%d2, (%[v1])+ \n"
SUBHALFREGS(%%a3, %%d4, %%d3)
"move.l %%d3, (%[v1])+ \n"
"lea.l (16, %[v2]), %[v2] \n"
"movem.l (%[v2]), %%d1-%%d4 \n"
"movem.l (%[v1]), %%a0-%%a3 \n"
SUBHALFREGS(%%a0, %%d1, %%d0)
"move.l %%d0, (%[v1])+ \n"
SUBHALFREGS(%%a1, %%d2, %%d1)
"move.l %%d1, (%[v1])+ \n"
SUBHALFREGS(%%a2, %%d3, %%d2)
"move.l %%d2, (%[v1])+ \n"
SUBHALFREGS(%%a3, %%d4, %%d3)
"movem.l %%d0-%%d3, (%[v1]) \n"
"move.l %%d3, (%[v1])+ \n"
#if ORDER > 16
"lea.l (16, %[v1]), %[v1] \n"
"lea.l (16, %[v2]), %[v2] \n"
"subq.l #1, %%d5 \n"
"bne.s 1b \n"
"bne.w 1b \n"
#endif
: /* outputs */
[v1]"+a"(v1),
@ -160,6 +166,7 @@ static inline int32_t scalarproduct(int16_t* v1, int16_t* v2)
#if ORDER > 32
"mac.w %%d2u, %%d3u, (%[v1])+, %%d0, %%acc0\n"
"mac.w %%d2l, %%d3l, (%[v2])+, %%d1, %%acc0\n"
"subq.l #1, %[res] \n"
"bne.w 1b \n"
#else