diff options
| author | Jens Arnold <amiconn@rockbox.org> | 2008-11-16 10:12:38 +0000 |
|---|---|---|
| committer | Jens Arnold <amiconn@rockbox.org> | 2008-11-16 10:12:38 +0000 |
| commit | 5ba11af85595ff5bfa84bfb45151e59ce02e6309 (patch) | |
| tree | 38c47204661a3d0bfefbeb9a4c0f05ddf5bed80d /apps | |
| parent | c41bd04722534a6122f6cd2249d4494ceab4c3a5 (diff) | |
Avoid unnecessary register copies on ARMv5.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19112 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps')
| -rw-r--r-- | apps/codecs/demac/libdemac/vector_math16_armv5te.h | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/apps/codecs/demac/libdemac/vector_math16_armv5te.h b/apps/codecs/demac/libdemac/vector_math16_armv5te.h index fef99d9061..a999c0333a 100644 --- a/apps/codecs/demac/libdemac/vector_math16_armv5te.h +++ b/apps/codecs/demac/libdemac/vector_math16_armv5te.h @@ -127,32 +127,30 @@ static inline int32_t scalarproduct(int16_t* v1, int16_t* v2) "beq 20f \n" "10: \n" - "ldrh r4, [%[v2]], #2 \n" - "mov r4, r4, lsl #16 \n" + "ldrh r7, [%[v2]], #2 \n" + "mov r7, r7, lsl #16 \n" "1: \n" "ldmia %[v1]!, {r0-r3} \n" - "ldmia %[v2]!, {r5-r8} \n" - "smlabt %[res], r0, r4, %[res] \n" - "smlatb %[res], r0, r5, %[res] \n" - "smlabt %[res], r1, r5, %[res] \n" - "smlatb %[res], r1, r6, %[res] \n" - "smlabt %[res], r2, r6, %[res] \n" - "smlatb %[res], r2, r7, %[res] \n" - "smlabt %[res], r3, r7, %[res] \n" - "smlatb %[res], r3, r8, %[res] \n" - "mov r4, r8 \n" + "smlabt %[res], r0, r7, %[res] \n" + "ldmia %[v2]!, {r4-r7} \n" + "smlatb %[res], r0, r4, %[res] \n" + "smlabt %[res], r1, r4, %[res] \n" + "smlatb %[res], r1, r5, %[res] \n" + "smlabt %[res], r2, r5, %[res] \n" + "smlatb %[res], r2, r6, %[res] \n" + "smlabt %[res], r3, r6, %[res] \n" + "smlatb %[res], r3, r7, %[res] \n" "ldmia %[v1]!, {r0-r3} \n" - "ldmia %[v2]!, {r5-r8} \n" - "smlabt %[res], r0, r4, %[res] \n" - "smlatb %[res], r0, r5, %[res] \n" - "smlabt %[res], r1, r5, %[res] \n" - "smlatb %[res], r1, r6, %[res] \n" - "smlabt %[res], r2, r6, %[res] \n" - "smlatb %[res], r2, r7, %[res] \n" - "smlabt %[res], r3, r7, %[res] \n" - "smlatb %[res], r3, r8, %[res] \n" + "smlabt %[res], r0, r7, %[res] \n" + "ldmia %[v2]!, {r4-r7} \n" + "smlatb %[res], r0, r4, %[res] \n" + "smlabt %[res], r1, r4, %[res] \n" + "smlatb %[res], r1, r5, %[res] \n" + "smlabt %[res], r2, r5, %[res] \n" + "smlatb %[res], r2, r6, %[res] \n" + "smlabt %[res], r3, r6, %[res] \n" + "smlatb %[res], r3, r7, %[res] \n" #if ORDER > 16 - "mov r4, r8 \n" "subs %[cnt], %[cnt], #1 \n" "bne 1b \n" #endif @@ -195,8 +193,8 @@ static inline int32_t scalarproduct(int16_t* v1, int16_t* v2) [res]"+r"(res) : /* inputs */ : /* clobbers */ - "r0", "r1", "r2", "r3", "r4", - "r5", "r6", "r7", "r8" + "r0", "r1", "r2", "r3", + "r4", "r5", "r6", "r7" ); return res; } |